1 //===-- X86InstrInfo.cpp - X86 Instruction Information --------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the X86 implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
14 #include "X86InstrInfo.h"
16 #include "X86InstrBuilder.h"
17 #include "X86MachineFunctionInfo.h"
18 #include "X86Subtarget.h"
19 #include "X86TargetMachine.h"
20 #include "llvm/DerivedTypes.h"
21 #include "llvm/LLVMContext.h"
22 #include "llvm/ADT/STLExtras.h"
23 #include "llvm/CodeGen/MachineConstantPool.h"
24 #include "llvm/CodeGen/MachineDominators.h"
25 #include "llvm/CodeGen/MachineFrameInfo.h"
26 #include "llvm/CodeGen/MachineInstrBuilder.h"
27 #include "llvm/CodeGen/MachineRegisterInfo.h"
28 #include "llvm/CodeGen/LiveVariables.h"
29 #include "llvm/MC/MCAsmInfo.h"
30 #include "llvm/MC/MCInst.h"
31 #include "llvm/Support/CommandLine.h"
32 #include "llvm/Support/Debug.h"
33 #include "llvm/Support/ErrorHandling.h"
34 #include "llvm/Support/raw_ostream.h"
35 #include "llvm/Target/TargetOptions.h"
38 #define GET_INSTRINFO_CTOR
39 #include "X86GenInstrInfo.inc"
44 NoFusing("disable-spill-fusing",
45 cl::desc("Disable fusing of spill code into instructions"));
47 PrintFailedFusing("print-failed-fuse-candidates",
48 cl::desc("Print instructions that the allocator wants to"
49 " fuse, but the X86 backend currently can't"),
52 ReMatPICStubLoad("remat-pic-stub-load",
53 cl::desc("Re-materialize load from stub in PIC mode"),
54 cl::init(false), cl::Hidden);
57 // Select which memory operand is being unfolded.
58 // (stored in bits 0 - 3)
65 // Do not insert the reverse map (MemOp -> RegOp) into the table.
66 // This may be needed because there is a many -> one mapping.
67 TB_NO_REVERSE = 1 << 4,
69 // Do not insert the forward map (RegOp -> MemOp) into the table.
70 // This is needed for Native Client, which prohibits branch
71 // instructions from using a memory operand.
72 TB_NO_FORWARD = 1 << 5,
74 TB_FOLDED_LOAD = 1 << 6,
75 TB_FOLDED_STORE = 1 << 7,
77 // Minimum alignment required for load/store.
78 // Used for RegOp->MemOp conversion.
79 // (stored in bits 8 - 15)
81 TB_ALIGN_NONE = 0 << TB_ALIGN_SHIFT,
82 TB_ALIGN_16 = 16 << TB_ALIGN_SHIFT,
83 TB_ALIGN_32 = 32 << TB_ALIGN_SHIFT,
84 TB_ALIGN_MASK = 0xff << TB_ALIGN_SHIFT
87 struct X86OpTblEntry {
93 X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
94 : X86GenInstrInfo((tm.getSubtarget<X86Subtarget>().is64Bit()
95 ? X86::ADJCALLSTACKDOWN64
96 : X86::ADJCALLSTACKDOWN32),
97 (tm.getSubtarget<X86Subtarget>().is64Bit()
98 ? X86::ADJCALLSTACKUP64
99 : X86::ADJCALLSTACKUP32)),
100 TM(tm), RI(tm, *this) {
102 static const X86OpTblEntry OpTbl2Addr[] = {
103 { X86::ADC32ri, X86::ADC32mi, 0 },
104 { X86::ADC32ri8, X86::ADC32mi8, 0 },
105 { X86::ADC32rr, X86::ADC32mr, 0 },
106 { X86::ADC64ri32, X86::ADC64mi32, 0 },
107 { X86::ADC64ri8, X86::ADC64mi8, 0 },
108 { X86::ADC64rr, X86::ADC64mr, 0 },
109 { X86::ADD16ri, X86::ADD16mi, 0 },
110 { X86::ADD16ri8, X86::ADD16mi8, 0 },
111 { X86::ADD16ri_DB, X86::ADD16mi, TB_NO_REVERSE },
112 { X86::ADD16ri8_DB, X86::ADD16mi8, TB_NO_REVERSE },
113 { X86::ADD16rr, X86::ADD16mr, 0 },
114 { X86::ADD16rr_DB, X86::ADD16mr, TB_NO_REVERSE },
115 { X86::ADD32ri, X86::ADD32mi, 0 },
116 { X86::ADD32ri8, X86::ADD32mi8, 0 },
117 { X86::ADD32ri_DB, X86::ADD32mi, TB_NO_REVERSE },
118 { X86::ADD32ri8_DB, X86::ADD32mi8, TB_NO_REVERSE },
119 { X86::ADD32rr, X86::ADD32mr, 0 },
120 { X86::ADD32rr_DB, X86::ADD32mr, TB_NO_REVERSE },
121 { X86::ADD64ri32, X86::ADD64mi32, 0 },
122 { X86::ADD64ri8, X86::ADD64mi8, 0 },
123 { X86::ADD64ri32_DB,X86::ADD64mi32, TB_NO_REVERSE },
124 { X86::ADD64ri8_DB, X86::ADD64mi8, TB_NO_REVERSE },
125 { X86::ADD64rr, X86::ADD64mr, 0 },
126 { X86::ADD64rr_DB, X86::ADD64mr, TB_NO_REVERSE },
127 { X86::ADD8ri, X86::ADD8mi, 0 },
128 { X86::ADD8rr, X86::ADD8mr, 0 },
129 { X86::AND16ri, X86::AND16mi, 0 },
130 { X86::AND16ri8, X86::AND16mi8, 0 },
131 { X86::AND16rr, X86::AND16mr, 0 },
132 { X86::AND32ri, X86::AND32mi, 0 },
133 { X86::AND32ri8, X86::AND32mi8, 0 },
134 { X86::AND32rr, X86::AND32mr, 0 },
135 { X86::AND64ri32, X86::AND64mi32, 0 },
136 { X86::AND64ri8, X86::AND64mi8, 0 },
137 { X86::AND64rr, X86::AND64mr, 0 },
138 { X86::AND8ri, X86::AND8mi, 0 },
139 { X86::AND8rr, X86::AND8mr, 0 },
140 { X86::DEC16r, X86::DEC16m, 0 },
141 { X86::DEC32r, X86::DEC32m, 0 },
142 { X86::DEC64_16r, X86::DEC64_16m, 0 },
143 { X86::DEC64_32r, X86::DEC64_32m, 0 },
144 { X86::DEC64r, X86::DEC64m, 0 },
145 { X86::DEC8r, X86::DEC8m, 0 },
146 { X86::INC16r, X86::INC16m, 0 },
147 { X86::INC32r, X86::INC32m, 0 },
148 { X86::INC64_16r, X86::INC64_16m, 0 },
149 { X86::INC64_32r, X86::INC64_32m, 0 },
150 { X86::INC64r, X86::INC64m, 0 },
151 { X86::INC8r, X86::INC8m, 0 },
152 { X86::NEG16r, X86::NEG16m, 0 },
153 { X86::NEG32r, X86::NEG32m, 0 },
154 { X86::NEG64r, X86::NEG64m, 0 },
155 { X86::NEG8r, X86::NEG8m, 0 },
156 { X86::NOT16r, X86::NOT16m, 0 },
157 { X86::NOT32r, X86::NOT32m, 0 },
158 { X86::NOT64r, X86::NOT64m, 0 },
159 { X86::NOT8r, X86::NOT8m, 0 },
160 { X86::OR16ri, X86::OR16mi, 0 },
161 { X86::OR16ri8, X86::OR16mi8, 0 },
162 { X86::OR16rr, X86::OR16mr, 0 },
163 { X86::OR32ri, X86::OR32mi, 0 },
164 { X86::OR32ri8, X86::OR32mi8, 0 },
165 { X86::OR32rr, X86::OR32mr, 0 },
166 { X86::OR64ri32, X86::OR64mi32, 0 },
167 { X86::OR64ri8, X86::OR64mi8, 0 },
168 { X86::OR64rr, X86::OR64mr, 0 },
169 { X86::OR8ri, X86::OR8mi, 0 },
170 { X86::OR8rr, X86::OR8mr, 0 },
171 { X86::ROL16r1, X86::ROL16m1, 0 },
172 { X86::ROL16rCL, X86::ROL16mCL, 0 },
173 { X86::ROL16ri, X86::ROL16mi, 0 },
174 { X86::ROL32r1, X86::ROL32m1, 0 },
175 { X86::ROL32rCL, X86::ROL32mCL, 0 },
176 { X86::ROL32ri, X86::ROL32mi, 0 },
177 { X86::ROL64r1, X86::ROL64m1, 0 },
178 { X86::ROL64rCL, X86::ROL64mCL, 0 },
179 { X86::ROL64ri, X86::ROL64mi, 0 },
180 { X86::ROL8r1, X86::ROL8m1, 0 },
181 { X86::ROL8rCL, X86::ROL8mCL, 0 },
182 { X86::ROL8ri, X86::ROL8mi, 0 },
183 { X86::ROR16r1, X86::ROR16m1, 0 },
184 { X86::ROR16rCL, X86::ROR16mCL, 0 },
185 { X86::ROR16ri, X86::ROR16mi, 0 },
186 { X86::ROR32r1, X86::ROR32m1, 0 },
187 { X86::ROR32rCL, X86::ROR32mCL, 0 },
188 { X86::ROR32ri, X86::ROR32mi, 0 },
189 { X86::ROR64r1, X86::ROR64m1, 0 },
190 { X86::ROR64rCL, X86::ROR64mCL, 0 },
191 { X86::ROR64ri, X86::ROR64mi, 0 },
192 { X86::ROR8r1, X86::ROR8m1, 0 },
193 { X86::ROR8rCL, X86::ROR8mCL, 0 },
194 { X86::ROR8ri, X86::ROR8mi, 0 },
195 { X86::SAR16r1, X86::SAR16m1, 0 },
196 { X86::SAR16rCL, X86::SAR16mCL, 0 },
197 { X86::SAR16ri, X86::SAR16mi, 0 },
198 { X86::SAR32r1, X86::SAR32m1, 0 },
199 { X86::SAR32rCL, X86::SAR32mCL, 0 },
200 { X86::SAR32ri, X86::SAR32mi, 0 },
201 { X86::SAR64r1, X86::SAR64m1, 0 },
202 { X86::SAR64rCL, X86::SAR64mCL, 0 },
203 { X86::SAR64ri, X86::SAR64mi, 0 },
204 { X86::SAR8r1, X86::SAR8m1, 0 },
205 { X86::SAR8rCL, X86::SAR8mCL, 0 },
206 { X86::SAR8ri, X86::SAR8mi, 0 },
207 { X86::SBB32ri, X86::SBB32mi, 0 },
208 { X86::SBB32ri8, X86::SBB32mi8, 0 },
209 { X86::SBB32rr, X86::SBB32mr, 0 },
210 { X86::SBB64ri32, X86::SBB64mi32, 0 },
211 { X86::SBB64ri8, X86::SBB64mi8, 0 },
212 { X86::SBB64rr, X86::SBB64mr, 0 },
213 { X86::SHL16rCL, X86::SHL16mCL, 0 },
214 { X86::SHL16ri, X86::SHL16mi, 0 },
215 { X86::SHL32rCL, X86::SHL32mCL, 0 },
216 { X86::SHL32ri, X86::SHL32mi, 0 },
217 { X86::SHL64rCL, X86::SHL64mCL, 0 },
218 { X86::SHL64ri, X86::SHL64mi, 0 },
219 { X86::SHL8rCL, X86::SHL8mCL, 0 },
220 { X86::SHL8ri, X86::SHL8mi, 0 },
221 { X86::SHLD16rrCL, X86::SHLD16mrCL, 0 },
222 { X86::SHLD16rri8, X86::SHLD16mri8, 0 },
223 { X86::SHLD32rrCL, X86::SHLD32mrCL, 0 },
224 { X86::SHLD32rri8, X86::SHLD32mri8, 0 },
225 { X86::SHLD64rrCL, X86::SHLD64mrCL, 0 },
226 { X86::SHLD64rri8, X86::SHLD64mri8, 0 },
227 { X86::SHR16r1, X86::SHR16m1, 0 },
228 { X86::SHR16rCL, X86::SHR16mCL, 0 },
229 { X86::SHR16ri, X86::SHR16mi, 0 },
230 { X86::SHR32r1, X86::SHR32m1, 0 },
231 { X86::SHR32rCL, X86::SHR32mCL, 0 },
232 { X86::SHR32ri, X86::SHR32mi, 0 },
233 { X86::SHR64r1, X86::SHR64m1, 0 },
234 { X86::SHR64rCL, X86::SHR64mCL, 0 },
235 { X86::SHR64ri, X86::SHR64mi, 0 },
236 { X86::SHR8r1, X86::SHR8m1, 0 },
237 { X86::SHR8rCL, X86::SHR8mCL, 0 },
238 { X86::SHR8ri, X86::SHR8mi, 0 },
239 { X86::SHRD16rrCL, X86::SHRD16mrCL, 0 },
240 { X86::SHRD16rri8, X86::SHRD16mri8, 0 },
241 { X86::SHRD32rrCL, X86::SHRD32mrCL, 0 },
242 { X86::SHRD32rri8, X86::SHRD32mri8, 0 },
243 { X86::SHRD64rrCL, X86::SHRD64mrCL, 0 },
244 { X86::SHRD64rri8, X86::SHRD64mri8, 0 },
245 { X86::SUB16ri, X86::SUB16mi, 0 },
246 { X86::SUB16ri8, X86::SUB16mi8, 0 },
247 { X86::SUB16rr, X86::SUB16mr, 0 },
248 { X86::SUB32ri, X86::SUB32mi, 0 },
249 { X86::SUB32ri8, X86::SUB32mi8, 0 },
250 { X86::SUB32rr, X86::SUB32mr, 0 },
251 { X86::SUB64ri32, X86::SUB64mi32, 0 },
252 { X86::SUB64ri8, X86::SUB64mi8, 0 },
253 { X86::SUB64rr, X86::SUB64mr, 0 },
254 { X86::SUB8ri, X86::SUB8mi, 0 },
255 { X86::SUB8rr, X86::SUB8mr, 0 },
256 { X86::XOR16ri, X86::XOR16mi, 0 },
257 { X86::XOR16ri8, X86::XOR16mi8, 0 },
258 { X86::XOR16rr, X86::XOR16mr, 0 },
259 { X86::XOR32ri, X86::XOR32mi, 0 },
260 { X86::XOR32ri8, X86::XOR32mi8, 0 },
261 { X86::XOR32rr, X86::XOR32mr, 0 },
262 { X86::XOR64ri32, X86::XOR64mi32, 0 },
263 { X86::XOR64ri8, X86::XOR64mi8, 0 },
264 { X86::XOR64rr, X86::XOR64mr, 0 },
265 { X86::XOR8ri, X86::XOR8mi, 0 },
266 { X86::XOR8rr, X86::XOR8mr, 0 }
269 for (unsigned i = 0, e = array_lengthof(OpTbl2Addr); i != e; ++i) {
270 unsigned RegOp = OpTbl2Addr[i].RegOp;
271 unsigned MemOp = OpTbl2Addr[i].MemOp;
272 unsigned Flags = OpTbl2Addr[i].Flags;
273 AddTableEntry(RegOp2MemOpTable2Addr, MemOp2RegOpTable,
275 // Index 0, folded load and store, no alignment requirement.
276 Flags | TB_INDEX_0 | TB_FOLDED_LOAD | TB_FOLDED_STORE);
279 static const X86OpTblEntry OpTbl0[] = {
280 { X86::BT16ri8, X86::BT16mi8, TB_FOLDED_LOAD },
281 { X86::BT32ri8, X86::BT32mi8, TB_FOLDED_LOAD },
282 { X86::BT64ri8, X86::BT64mi8, TB_FOLDED_LOAD },
283 { X86::CALL32r, X86::CALL32m, TB_FOLDED_LOAD },
284 { X86::CALL64r, X86::CALL64m, TB_FOLDED_LOAD },
285 { X86::CMP16ri, X86::CMP16mi, TB_FOLDED_LOAD },
286 { X86::CMP16ri8, X86::CMP16mi8, TB_FOLDED_LOAD },
287 { X86::CMP16rr, X86::CMP16mr, TB_FOLDED_LOAD },
288 { X86::CMP32ri, X86::CMP32mi, TB_FOLDED_LOAD },
289 { X86::CMP32ri8, X86::CMP32mi8, TB_FOLDED_LOAD },
290 { X86::CMP32rr, X86::CMP32mr, TB_FOLDED_LOAD },
291 { X86::CMP64ri32, X86::CMP64mi32, TB_FOLDED_LOAD },
292 { X86::CMP64ri8, X86::CMP64mi8, TB_FOLDED_LOAD },
293 { X86::CMP64rr, X86::CMP64mr, TB_FOLDED_LOAD },
294 { X86::CMP8ri, X86::CMP8mi, TB_FOLDED_LOAD },
295 { X86::CMP8rr, X86::CMP8mr, TB_FOLDED_LOAD },
296 { X86::DIV16r, X86::DIV16m, TB_FOLDED_LOAD },
297 { X86::DIV32r, X86::DIV32m, TB_FOLDED_LOAD },
298 { X86::DIV64r, X86::DIV64m, TB_FOLDED_LOAD },
299 { X86::DIV8r, X86::DIV8m, TB_FOLDED_LOAD },
300 { X86::EXTRACTPSrr, X86::EXTRACTPSmr, TB_FOLDED_STORE | TB_ALIGN_16 },
301 { X86::FsMOVAPDrr, X86::MOVSDmr, TB_FOLDED_STORE | TB_NO_REVERSE },
302 { X86::FsMOVAPSrr, X86::MOVSSmr, TB_FOLDED_STORE | TB_NO_REVERSE },
303 { X86::IDIV16r, X86::IDIV16m, TB_FOLDED_LOAD },
304 { X86::IDIV32r, X86::IDIV32m, TB_FOLDED_LOAD },
305 { X86::IDIV64r, X86::IDIV64m, TB_FOLDED_LOAD },
306 { X86::IDIV8r, X86::IDIV8m, TB_FOLDED_LOAD },
307 { X86::IMUL16r, X86::IMUL16m, TB_FOLDED_LOAD },
308 { X86::IMUL32r, X86::IMUL32m, TB_FOLDED_LOAD },
309 { X86::IMUL64r, X86::IMUL64m, TB_FOLDED_LOAD },
310 { X86::IMUL8r, X86::IMUL8m, TB_FOLDED_LOAD },
311 { X86::JMP32r, X86::JMP32m, TB_FOLDED_LOAD },
312 { X86::JMP64r, X86::JMP64m, TB_FOLDED_LOAD },
313 { X86::MOV16ri, X86::MOV16mi, TB_FOLDED_STORE },
314 { X86::MOV16rr, X86::MOV16mr, TB_FOLDED_STORE },
315 { X86::MOV32ri, X86::MOV32mi, TB_FOLDED_STORE },
316 { X86::MOV32rr, X86::MOV32mr, TB_FOLDED_STORE },
317 { X86::MOV64ri32, X86::MOV64mi32, TB_FOLDED_STORE },
318 { X86::MOV64rr, X86::MOV64mr, TB_FOLDED_STORE },
319 { X86::MOV8ri, X86::MOV8mi, TB_FOLDED_STORE },
320 { X86::MOV8rr, X86::MOV8mr, TB_FOLDED_STORE },
321 { X86::MOV8rr_NOREX, X86::MOV8mr_NOREX, TB_FOLDED_STORE },
322 { X86::MOVAPDrr, X86::MOVAPDmr, TB_FOLDED_STORE | TB_ALIGN_16 },
323 { X86::MOVAPSrr, X86::MOVAPSmr, TB_FOLDED_STORE | TB_ALIGN_16 },
324 { X86::MOVDQArr, X86::MOVDQAmr, TB_FOLDED_STORE | TB_ALIGN_16 },
325 { X86::MOVPDI2DIrr, X86::MOVPDI2DImr, TB_FOLDED_STORE },
326 { X86::MOVPQIto64rr,X86::MOVPQI2QImr, TB_FOLDED_STORE },
327 { X86::MOVSDto64rr, X86::MOVSDto64mr, TB_FOLDED_STORE },
328 { X86::MOVSS2DIrr, X86::MOVSS2DImr, TB_FOLDED_STORE },
329 { X86::MOVUPDrr, X86::MOVUPDmr, TB_FOLDED_STORE },
330 { X86::MOVUPSrr, X86::MOVUPSmr, TB_FOLDED_STORE },
331 { X86::MUL16r, X86::MUL16m, TB_FOLDED_LOAD },
332 { X86::MUL32r, X86::MUL32m, TB_FOLDED_LOAD },
333 { X86::MUL64r, X86::MUL64m, TB_FOLDED_LOAD },
334 { X86::MUL8r, X86::MUL8m, TB_FOLDED_LOAD },
335 { X86::SETAEr, X86::SETAEm, TB_FOLDED_STORE },
336 { X86::SETAr, X86::SETAm, TB_FOLDED_STORE },
337 { X86::SETBEr, X86::SETBEm, TB_FOLDED_STORE },
338 { X86::SETBr, X86::SETBm, TB_FOLDED_STORE },
339 { X86::SETEr, X86::SETEm, TB_FOLDED_STORE },
340 { X86::SETGEr, X86::SETGEm, TB_FOLDED_STORE },
341 { X86::SETGr, X86::SETGm, TB_FOLDED_STORE },
342 { X86::SETLEr, X86::SETLEm, TB_FOLDED_STORE },
343 { X86::SETLr, X86::SETLm, TB_FOLDED_STORE },
344 { X86::SETNEr, X86::SETNEm, TB_FOLDED_STORE },
345 { X86::SETNOr, X86::SETNOm, TB_FOLDED_STORE },
346 { X86::SETNPr, X86::SETNPm, TB_FOLDED_STORE },
347 { X86::SETNSr, X86::SETNSm, TB_FOLDED_STORE },
348 { X86::SETOr, X86::SETOm, TB_FOLDED_STORE },
349 { X86::SETPr, X86::SETPm, TB_FOLDED_STORE },
350 { X86::SETSr, X86::SETSm, TB_FOLDED_STORE },
351 { X86::TAILJMPr, X86::TAILJMPm, TB_FOLDED_LOAD },
352 { X86::TAILJMPr64, X86::TAILJMPm64, TB_FOLDED_LOAD },
353 { X86::TEST16ri, X86::TEST16mi, TB_FOLDED_LOAD },
354 { X86::TEST32ri, X86::TEST32mi, TB_FOLDED_LOAD },
355 { X86::TEST64ri32, X86::TEST64mi32, TB_FOLDED_LOAD },
356 { X86::TEST8ri, X86::TEST8mi, TB_FOLDED_LOAD },
357 // AVX 128-bit versions of foldable instructions
358 { X86::VEXTRACTPSrr,X86::VEXTRACTPSmr, TB_FOLDED_STORE | TB_ALIGN_16 },
359 { X86::FsVMOVAPDrr, X86::VMOVSDmr, TB_FOLDED_STORE | TB_NO_REVERSE },
360 { X86::FsVMOVAPSrr, X86::VMOVSSmr, TB_FOLDED_STORE | TB_NO_REVERSE },
361 { X86::VEXTRACTF128rr, X86::VEXTRACTF128mr, TB_FOLDED_STORE | TB_ALIGN_16 },
362 { X86::VMOVAPDrr, X86::VMOVAPDmr, TB_FOLDED_STORE | TB_ALIGN_16 },
363 { X86::VMOVAPSrr, X86::VMOVAPSmr, TB_FOLDED_STORE | TB_ALIGN_16 },
364 { X86::VMOVDQArr, X86::VMOVDQAmr, TB_FOLDED_STORE | TB_ALIGN_16 },
365 { X86::VMOVPDI2DIrr,X86::VMOVPDI2DImr, TB_FOLDED_STORE },
366 { X86::VMOVPQIto64rr, X86::VMOVPQI2QImr,TB_FOLDED_STORE },
367 { X86::VMOVSDto64rr,X86::VMOVSDto64mr, TB_FOLDED_STORE },
368 { X86::VMOVSS2DIrr, X86::VMOVSS2DImr, TB_FOLDED_STORE },
369 { X86::VMOVUPDrr, X86::VMOVUPDmr, TB_FOLDED_STORE },
370 { X86::VMOVUPSrr, X86::VMOVUPSmr, TB_FOLDED_STORE },
371 // AVX 256-bit foldable instructions
372 { X86::VEXTRACTI128rr, X86::VEXTRACTI128mr, TB_FOLDED_STORE | TB_ALIGN_16 },
373 { X86::VMOVAPDYrr, X86::VMOVAPDYmr, TB_FOLDED_STORE | TB_ALIGN_32 },
374 { X86::VMOVAPSYrr, X86::VMOVAPSYmr, TB_FOLDED_STORE | TB_ALIGN_32 },
375 { X86::VMOVDQAYrr, X86::VMOVDQAYmr, TB_FOLDED_STORE | TB_ALIGN_32 },
376 { X86::VMOVUPDYrr, X86::VMOVUPDYmr, TB_FOLDED_STORE },
377 { X86::VMOVUPSYrr, X86::VMOVUPSYmr, TB_FOLDED_STORE }
380 for (unsigned i = 0, e = array_lengthof(OpTbl0); i != e; ++i) {
381 unsigned RegOp = OpTbl0[i].RegOp;
382 unsigned MemOp = OpTbl0[i].MemOp;
383 unsigned Flags = OpTbl0[i].Flags;
384 AddTableEntry(RegOp2MemOpTable0, MemOp2RegOpTable,
385 RegOp, MemOp, TB_INDEX_0 | Flags);
388 static const X86OpTblEntry OpTbl1[] = {
389 { X86::CMP16rr, X86::CMP16rm, 0 },
390 { X86::CMP32rr, X86::CMP32rm, 0 },
391 { X86::CMP64rr, X86::CMP64rm, 0 },
392 { X86::CMP8rr, X86::CMP8rm, 0 },
393 { X86::CVTSD2SSrr, X86::CVTSD2SSrm, 0 },
394 { X86::CVTSI2SD64rr, X86::CVTSI2SD64rm, 0 },
395 { X86::CVTSI2SDrr, X86::CVTSI2SDrm, 0 },
396 { X86::CVTSI2SS64rr, X86::CVTSI2SS64rm, 0 },
397 { X86::CVTSI2SSrr, X86::CVTSI2SSrm, 0 },
398 { X86::CVTSS2SDrr, X86::CVTSS2SDrm, 0 },
399 { X86::CVTTSD2SI64rr, X86::CVTTSD2SI64rm, 0 },
400 { X86::CVTTSD2SIrr, X86::CVTTSD2SIrm, 0 },
401 { X86::CVTTSS2SI64rr, X86::CVTTSS2SI64rm, 0 },
402 { X86::CVTTSS2SIrr, X86::CVTTSS2SIrm, 0 },
403 { X86::FsMOVAPDrr, X86::MOVSDrm, TB_NO_REVERSE },
404 { X86::FsMOVAPSrr, X86::MOVSSrm, TB_NO_REVERSE },
405 { X86::IMUL16rri, X86::IMUL16rmi, 0 },
406 { X86::IMUL16rri8, X86::IMUL16rmi8, 0 },
407 { X86::IMUL32rri, X86::IMUL32rmi, 0 },
408 { X86::IMUL32rri8, X86::IMUL32rmi8, 0 },
409 { X86::IMUL64rri32, X86::IMUL64rmi32, 0 },
410 { X86::IMUL64rri8, X86::IMUL64rmi8, 0 },
411 { X86::Int_COMISDrr, X86::Int_COMISDrm, 0 },
412 { X86::Int_COMISSrr, X86::Int_COMISSrm, 0 },
413 { X86::CVTSD2SI64rr, X86::CVTSD2SI64rm, 0 },
414 { X86::CVTSD2SIrr, X86::CVTSD2SIrm, 0 },
415 { X86::CVTSS2SI64rr, X86::CVTSS2SI64rm, 0 },
416 { X86::CVTSS2SIrr, X86::CVTSS2SIrm, 0 },
417 { X86::CVTTPD2DQrr, X86::CVTTPD2DQrm, TB_ALIGN_16 },
418 { X86::CVTTPS2DQrr, X86::CVTTPS2DQrm, TB_ALIGN_16 },
419 { X86::Int_CVTTSD2SI64rr,X86::Int_CVTTSD2SI64rm, 0 },
420 { X86::Int_CVTTSD2SIrr, X86::Int_CVTTSD2SIrm, 0 },
421 { X86::Int_CVTTSS2SI64rr,X86::Int_CVTTSS2SI64rm, 0 },
422 { X86::Int_CVTTSS2SIrr, X86::Int_CVTTSS2SIrm, 0 },
423 { X86::Int_UCOMISDrr, X86::Int_UCOMISDrm, 0 },
424 { X86::Int_UCOMISSrr, X86::Int_UCOMISSrm, 0 },
425 { X86::MOV16rr, X86::MOV16rm, 0 },
426 { X86::MOV32rr, X86::MOV32rm, 0 },
427 { X86::MOV64rr, X86::MOV64rm, 0 },
428 { X86::MOV64toPQIrr, X86::MOVQI2PQIrm, 0 },
429 { X86::MOV64toSDrr, X86::MOV64toSDrm, 0 },
430 { X86::MOV8rr, X86::MOV8rm, 0 },
431 { X86::MOVAPDrr, X86::MOVAPDrm, TB_ALIGN_16 },
432 { X86::MOVAPSrr, X86::MOVAPSrm, TB_ALIGN_16 },
433 { X86::MOVDDUPrr, X86::MOVDDUPrm, 0 },
434 { X86::MOVDI2PDIrr, X86::MOVDI2PDIrm, 0 },
435 { X86::MOVDI2SSrr, X86::MOVDI2SSrm, 0 },
436 { X86::MOVDQArr, X86::MOVDQArm, TB_ALIGN_16 },
437 { X86::MOVSHDUPrr, X86::MOVSHDUPrm, TB_ALIGN_16 },
438 { X86::MOVSLDUPrr, X86::MOVSLDUPrm, TB_ALIGN_16 },
439 { X86::MOVSX16rr8, X86::MOVSX16rm8, 0 },
440 { X86::MOVSX32rr16, X86::MOVSX32rm16, 0 },
441 { X86::MOVSX32rr8, X86::MOVSX32rm8, 0 },
442 { X86::MOVSX64rr16, X86::MOVSX64rm16, 0 },
443 { X86::MOVSX64rr32, X86::MOVSX64rm32, 0 },
444 { X86::MOVSX64rr8, X86::MOVSX64rm8, 0 },
445 { X86::MOVUPDrr, X86::MOVUPDrm, TB_ALIGN_16 },
446 { X86::MOVUPSrr, X86::MOVUPSrm, 0 },
447 { X86::MOVZDI2PDIrr, X86::MOVZDI2PDIrm, 0 },
448 { X86::MOVZQI2PQIrr, X86::MOVZQI2PQIrm, 0 },
449 { X86::MOVZPQILo2PQIrr, X86::MOVZPQILo2PQIrm, TB_ALIGN_16 },
450 { X86::MOVZX16rr8, X86::MOVZX16rm8, 0 },
451 { X86::MOVZX32rr16, X86::MOVZX32rm16, 0 },
452 { X86::MOVZX32_NOREXrr8, X86::MOVZX32_NOREXrm8, 0 },
453 { X86::MOVZX32rr8, X86::MOVZX32rm8, 0 },
454 { X86::MOVZX64rr16, X86::MOVZX64rm16, 0 },
455 { X86::MOVZX64rr32, X86::MOVZX64rm32, 0 },
456 { X86::MOVZX64rr8, X86::MOVZX64rm8, 0 },
457 { X86::PABSBrr128, X86::PABSBrm128, TB_ALIGN_16 },
458 { X86::PABSDrr128, X86::PABSDrm128, TB_ALIGN_16 },
459 { X86::PABSWrr128, X86::PABSWrm128, TB_ALIGN_16 },
460 { X86::PSHUFDri, X86::PSHUFDmi, TB_ALIGN_16 },
461 { X86::PSHUFHWri, X86::PSHUFHWmi, TB_ALIGN_16 },
462 { X86::PSHUFLWri, X86::PSHUFLWmi, TB_ALIGN_16 },
463 { X86::RCPPSr, X86::RCPPSm, TB_ALIGN_16 },
464 { X86::RCPPSr_Int, X86::RCPPSm_Int, TB_ALIGN_16 },
465 { X86::RSQRTPSr, X86::RSQRTPSm, TB_ALIGN_16 },
466 { X86::RSQRTPSr_Int, X86::RSQRTPSm_Int, TB_ALIGN_16 },
467 { X86::RSQRTSSr, X86::RSQRTSSm, 0 },
468 { X86::RSQRTSSr_Int, X86::RSQRTSSm_Int, 0 },
469 { X86::SQRTPDr, X86::SQRTPDm, TB_ALIGN_16 },
470 { X86::SQRTPDr_Int, X86::SQRTPDm_Int, TB_ALIGN_16 },
471 { X86::SQRTPSr, X86::SQRTPSm, TB_ALIGN_16 },
472 { X86::SQRTPSr_Int, X86::SQRTPSm_Int, TB_ALIGN_16 },
473 { X86::SQRTSDr, X86::SQRTSDm, 0 },
474 { X86::SQRTSDr_Int, X86::SQRTSDm_Int, 0 },
475 { X86::SQRTSSr, X86::SQRTSSm, 0 },
476 { X86::SQRTSSr_Int, X86::SQRTSSm_Int, 0 },
477 { X86::TEST16rr, X86::TEST16rm, 0 },
478 { X86::TEST32rr, X86::TEST32rm, 0 },
479 { X86::TEST64rr, X86::TEST64rm, 0 },
480 { X86::TEST8rr, X86::TEST8rm, 0 },
481 // FIXME: TEST*rr EAX,EAX ---> CMP [mem], 0
482 { X86::UCOMISDrr, X86::UCOMISDrm, 0 },
483 { X86::UCOMISSrr, X86::UCOMISSrm, 0 },
484 // AVX 128-bit versions of foldable instructions
485 { X86::Int_VCOMISDrr, X86::Int_VCOMISDrm, 0 },
486 { X86::Int_VCOMISSrr, X86::Int_VCOMISSrm, 0 },
487 { X86::Int_VUCOMISDrr, X86::Int_VUCOMISDrm, 0 },
488 { X86::Int_VUCOMISSrr, X86::Int_VUCOMISSrm, 0 },
489 { X86::VCVTTSD2SI64rr, X86::VCVTTSD2SI64rm, 0 },
490 { X86::Int_VCVTTSD2SI64rr,X86::Int_VCVTTSD2SI64rm,0 },
491 { X86::VCVTTSD2SIrr, X86::VCVTTSD2SIrm, 0 },
492 { X86::Int_VCVTTSD2SIrr,X86::Int_VCVTTSD2SIrm, 0 },
493 { X86::VCVTTSS2SI64rr, X86::VCVTTSS2SI64rm, 0 },
494 { X86::Int_VCVTTSS2SI64rr,X86::Int_VCVTTSS2SI64rm,0 },
495 { X86::VCVTTSS2SIrr, X86::VCVTTSS2SIrm, 0 },
496 { X86::Int_VCVTTSS2SIrr,X86::Int_VCVTTSS2SIrm, 0 },
497 { X86::VCVTSD2SI64rr, X86::VCVTSD2SI64rm, 0 },
498 { X86::VCVTSD2SIrr, X86::VCVTSD2SIrm, 0 },
499 { X86::VCVTSS2SI64rr, X86::VCVTSS2SI64rm, 0 },
500 { X86::VCVTSS2SIrr, X86::VCVTSS2SIrm, 0 },
501 { X86::FsVMOVAPDrr, X86::VMOVSDrm, TB_NO_REVERSE },
502 { X86::FsVMOVAPSrr, X86::VMOVSSrm, TB_NO_REVERSE },
503 { X86::VMOV64toPQIrr, X86::VMOVQI2PQIrm, 0 },
504 { X86::VMOV64toSDrr, X86::VMOV64toSDrm, 0 },
505 { X86::VMOVAPDrr, X86::VMOVAPDrm, TB_ALIGN_16 },
506 { X86::VMOVAPSrr, X86::VMOVAPSrm, TB_ALIGN_16 },
507 { X86::VMOVDDUPrr, X86::VMOVDDUPrm, 0 },
508 { X86::VMOVDI2PDIrr, X86::VMOVDI2PDIrm, 0 },
509 { X86::VMOVDI2SSrr, X86::VMOVDI2SSrm, 0 },
510 { X86::VMOVDQArr, X86::VMOVDQArm, TB_ALIGN_16 },
511 { X86::VMOVSLDUPrr, X86::VMOVSLDUPrm, TB_ALIGN_16 },
512 { X86::VMOVSHDUPrr, X86::VMOVSHDUPrm, TB_ALIGN_16 },
513 { X86::VMOVUPDrr, X86::VMOVUPDrm, TB_ALIGN_16 },
514 { X86::VMOVUPSrr, X86::VMOVUPSrm, 0 },
515 { X86::VMOVZDI2PDIrr, X86::VMOVZDI2PDIrm, 0 },
516 { X86::VMOVZQI2PQIrr, X86::VMOVZQI2PQIrm, 0 },
517 { X86::VMOVZPQILo2PQIrr,X86::VMOVZPQILo2PQIrm, TB_ALIGN_16 },
518 { X86::VPABSBrr128, X86::VPABSBrm128, TB_ALIGN_16 },
519 { X86::VPABSDrr128, X86::VPABSDrm128, TB_ALIGN_16 },
520 { X86::VPABSWrr128, X86::VPABSWrm128, TB_ALIGN_16 },
521 { X86::VPERMILPDri, X86::VPERMILPDmi, TB_ALIGN_16 },
522 { X86::VPERMILPSri, X86::VPERMILPSmi, TB_ALIGN_16 },
523 { X86::VPSHUFDri, X86::VPSHUFDmi, TB_ALIGN_16 },
524 { X86::VPSHUFHWri, X86::VPSHUFHWmi, TB_ALIGN_16 },
525 { X86::VPSHUFLWri, X86::VPSHUFLWmi, TB_ALIGN_16 },
526 { X86::VRCPPSr, X86::VRCPPSm, TB_ALIGN_16 },
527 { X86::VRCPPSr_Int, X86::VRCPPSm_Int, TB_ALIGN_16 },
528 { X86::VRSQRTPSr, X86::VRSQRTPSm, TB_ALIGN_16 },
529 { X86::VRSQRTPSr_Int, X86::VRSQRTPSm_Int, TB_ALIGN_16 },
530 { X86::VSQRTPDr, X86::VSQRTPDm, TB_ALIGN_16 },
531 { X86::VSQRTPDr_Int, X86::VSQRTPDm_Int, TB_ALIGN_16 },
532 { X86::VSQRTPSr, X86::VSQRTPSm, TB_ALIGN_16 },
533 { X86::VSQRTPSr_Int, X86::VSQRTPSm_Int, TB_ALIGN_16 },
534 { X86::VUCOMISDrr, X86::VUCOMISDrm, 0 },
535 { X86::VUCOMISSrr, X86::VUCOMISSrm, 0 },
536 { X86::VBROADCASTSSrr, X86::VBROADCASTSSrm, TB_NO_REVERSE },
538 // AVX 256-bit foldable instructions
539 { X86::VMOVAPDYrr, X86::VMOVAPDYrm, TB_ALIGN_32 },
540 { X86::VMOVAPSYrr, X86::VMOVAPSYrm, TB_ALIGN_32 },
541 { X86::VMOVDQAYrr, X86::VMOVDQAYrm, TB_ALIGN_32 },
542 { X86::VMOVUPDYrr, X86::VMOVUPDYrm, 0 },
543 { X86::VMOVUPSYrr, X86::VMOVUPSYrm, 0 },
544 { X86::VPERMILPDYri, X86::VPERMILPDYmi, TB_ALIGN_32 },
545 { X86::VPERMILPSYri, X86::VPERMILPSYmi, TB_ALIGN_32 },
547 // AVX2 foldable instructions
548 { X86::VPABSBrr256, X86::VPABSBrm256, TB_ALIGN_32 },
549 { X86::VPABSDrr256, X86::VPABSDrm256, TB_ALIGN_32 },
550 { X86::VPABSWrr256, X86::VPABSWrm256, TB_ALIGN_32 },
551 { X86::VPSHUFDYri, X86::VPSHUFDYmi, TB_ALIGN_32 },
552 { X86::VPSHUFHWYri, X86::VPSHUFHWYmi, TB_ALIGN_32 },
553 { X86::VPSHUFLWYri, X86::VPSHUFLWYmi, TB_ALIGN_32 },
554 { X86::VRCPPSYr, X86::VRCPPSYm, TB_ALIGN_32 },
555 { X86::VRCPPSYr_Int, X86::VRCPPSYm_Int, TB_ALIGN_32 },
556 { X86::VRSQRTPSYr, X86::VRSQRTPSYm, TB_ALIGN_32 },
557 { X86::VRSQRTPSYr_Int, X86::VRSQRTPSYm_Int, TB_ALIGN_32 },
558 { X86::VSQRTPDYr, X86::VSQRTPDYm, TB_ALIGN_32 },
559 { X86::VSQRTPDYr_Int, X86::VSQRTPDYm_Int, TB_ALIGN_32 },
560 { X86::VSQRTPSYr, X86::VSQRTPSYm, TB_ALIGN_32 },
561 { X86::VSQRTPSYr_Int, X86::VSQRTPSYm_Int, TB_ALIGN_32 },
562 { X86::VBROADCASTSSYrr, X86::VBROADCASTSSYrm, TB_NO_REVERSE },
563 { X86::VBROADCASTSDYrr, X86::VBROADCASTSDYrm, TB_NO_REVERSE },
565 // BMI/BMI2 foldable instructions
566 { X86::RORX32ri, X86::RORX32mi, 0 },
567 { X86::RORX64ri, X86::RORX64mi, 0 },
568 { X86::SARX32rr, X86::SARX32rm, 0 },
569 { X86::SARX64rr, X86::SARX64rm, 0 },
570 { X86::SHRX32rr, X86::SHRX32rm, 0 },
571 { X86::SHRX64rr, X86::SHRX64rm, 0 },
572 { X86::SHLX32rr, X86::SHLX32rm, 0 },
573 { X86::SHLX64rr, X86::SHLX64rm, 0 },
576 for (unsigned i = 0, e = array_lengthof(OpTbl1); i != e; ++i) {
577 unsigned RegOp = OpTbl1[i].RegOp;
578 unsigned MemOp = OpTbl1[i].MemOp;
579 unsigned Flags = OpTbl1[i].Flags;
580 AddTableEntry(RegOp2MemOpTable1, MemOp2RegOpTable,
582 // Index 1, folded load
583 Flags | TB_INDEX_1 | TB_FOLDED_LOAD);
586 static const X86OpTblEntry OpTbl2[] = {
587 { X86::ADC32rr, X86::ADC32rm, 0 },
588 { X86::ADC64rr, X86::ADC64rm, 0 },
589 { X86::ADD16rr, X86::ADD16rm, 0 },
590 { X86::ADD16rr_DB, X86::ADD16rm, TB_NO_REVERSE },
591 { X86::ADD32rr, X86::ADD32rm, 0 },
592 { X86::ADD32rr_DB, X86::ADD32rm, TB_NO_REVERSE },
593 { X86::ADD64rr, X86::ADD64rm, 0 },
594 { X86::ADD64rr_DB, X86::ADD64rm, TB_NO_REVERSE },
595 { X86::ADD8rr, X86::ADD8rm, 0 },
596 { X86::ADDPDrr, X86::ADDPDrm, TB_ALIGN_16 },
597 { X86::ADDPSrr, X86::ADDPSrm, TB_ALIGN_16 },
598 { X86::ADDSDrr, X86::ADDSDrm, 0 },
599 { X86::ADDSSrr, X86::ADDSSrm, 0 },
600 { X86::ADDSUBPDrr, X86::ADDSUBPDrm, TB_ALIGN_16 },
601 { X86::ADDSUBPSrr, X86::ADDSUBPSrm, TB_ALIGN_16 },
602 { X86::AND16rr, X86::AND16rm, 0 },
603 { X86::AND32rr, X86::AND32rm, 0 },
604 { X86::AND64rr, X86::AND64rm, 0 },
605 { X86::AND8rr, X86::AND8rm, 0 },
606 { X86::ANDNPDrr, X86::ANDNPDrm, TB_ALIGN_16 },
607 { X86::ANDNPSrr, X86::ANDNPSrm, TB_ALIGN_16 },
608 { X86::ANDPDrr, X86::ANDPDrm, TB_ALIGN_16 },
609 { X86::ANDPSrr, X86::ANDPSrm, TB_ALIGN_16 },
610 { X86::BLENDPDrri, X86::BLENDPDrmi, TB_ALIGN_16 },
611 { X86::BLENDPSrri, X86::BLENDPSrmi, TB_ALIGN_16 },
612 { X86::BLENDVPDrr0, X86::BLENDVPDrm0, TB_ALIGN_16 },
613 { X86::BLENDVPSrr0, X86::BLENDVPSrm0, TB_ALIGN_16 },
614 { X86::CMOVA16rr, X86::CMOVA16rm, 0 },
615 { X86::CMOVA32rr, X86::CMOVA32rm, 0 },
616 { X86::CMOVA64rr, X86::CMOVA64rm, 0 },
617 { X86::CMOVAE16rr, X86::CMOVAE16rm, 0 },
618 { X86::CMOVAE32rr, X86::CMOVAE32rm, 0 },
619 { X86::CMOVAE64rr, X86::CMOVAE64rm, 0 },
620 { X86::CMOVB16rr, X86::CMOVB16rm, 0 },
621 { X86::CMOVB32rr, X86::CMOVB32rm, 0 },
622 { X86::CMOVB64rr, X86::CMOVB64rm, 0 },
623 { X86::CMOVBE16rr, X86::CMOVBE16rm, 0 },
624 { X86::CMOVBE32rr, X86::CMOVBE32rm, 0 },
625 { X86::CMOVBE64rr, X86::CMOVBE64rm, 0 },
626 { X86::CMOVE16rr, X86::CMOVE16rm, 0 },
627 { X86::CMOVE32rr, X86::CMOVE32rm, 0 },
628 { X86::CMOVE64rr, X86::CMOVE64rm, 0 },
629 { X86::CMOVG16rr, X86::CMOVG16rm, 0 },
630 { X86::CMOVG32rr, X86::CMOVG32rm, 0 },
631 { X86::CMOVG64rr, X86::CMOVG64rm, 0 },
632 { X86::CMOVGE16rr, X86::CMOVGE16rm, 0 },
633 { X86::CMOVGE32rr, X86::CMOVGE32rm, 0 },
634 { X86::CMOVGE64rr, X86::CMOVGE64rm, 0 },
635 { X86::CMOVL16rr, X86::CMOVL16rm, 0 },
636 { X86::CMOVL32rr, X86::CMOVL32rm, 0 },
637 { X86::CMOVL64rr, X86::CMOVL64rm, 0 },
638 { X86::CMOVLE16rr, X86::CMOVLE16rm, 0 },
639 { X86::CMOVLE32rr, X86::CMOVLE32rm, 0 },
640 { X86::CMOVLE64rr, X86::CMOVLE64rm, 0 },
641 { X86::CMOVNE16rr, X86::CMOVNE16rm, 0 },
642 { X86::CMOVNE32rr, X86::CMOVNE32rm, 0 },
643 { X86::CMOVNE64rr, X86::CMOVNE64rm, 0 },
644 { X86::CMOVNO16rr, X86::CMOVNO16rm, 0 },
645 { X86::CMOVNO32rr, X86::CMOVNO32rm, 0 },
646 { X86::CMOVNO64rr, X86::CMOVNO64rm, 0 },
647 { X86::CMOVNP16rr, X86::CMOVNP16rm, 0 },
648 { X86::CMOVNP32rr, X86::CMOVNP32rm, 0 },
649 { X86::CMOVNP64rr, X86::CMOVNP64rm, 0 },
650 { X86::CMOVNS16rr, X86::CMOVNS16rm, 0 },
651 { X86::CMOVNS32rr, X86::CMOVNS32rm, 0 },
652 { X86::CMOVNS64rr, X86::CMOVNS64rm, 0 },
653 { X86::CMOVO16rr, X86::CMOVO16rm, 0 },
654 { X86::CMOVO32rr, X86::CMOVO32rm, 0 },
655 { X86::CMOVO64rr, X86::CMOVO64rm, 0 },
656 { X86::CMOVP16rr, X86::CMOVP16rm, 0 },
657 { X86::CMOVP32rr, X86::CMOVP32rm, 0 },
658 { X86::CMOVP64rr, X86::CMOVP64rm, 0 },
659 { X86::CMOVS16rr, X86::CMOVS16rm, 0 },
660 { X86::CMOVS32rr, X86::CMOVS32rm, 0 },
661 { X86::CMOVS64rr, X86::CMOVS64rm, 0 },
662 { X86::CMPPDrri, X86::CMPPDrmi, TB_ALIGN_16 },
663 { X86::CMPPSrri, X86::CMPPSrmi, TB_ALIGN_16 },
664 { X86::CMPSDrr, X86::CMPSDrm, 0 },
665 { X86::CMPSSrr, X86::CMPSSrm, 0 },
666 { X86::DIVPDrr, X86::DIVPDrm, TB_ALIGN_16 },
667 { X86::DIVPSrr, X86::DIVPSrm, TB_ALIGN_16 },
668 { X86::DIVSDrr, X86::DIVSDrm, 0 },
669 { X86::DIVSSrr, X86::DIVSSrm, 0 },
670 { X86::FsANDNPDrr, X86::FsANDNPDrm, TB_ALIGN_16 },
671 { X86::FsANDNPSrr, X86::FsANDNPSrm, TB_ALIGN_16 },
672 { X86::FsANDPDrr, X86::FsANDPDrm, TB_ALIGN_16 },
673 { X86::FsANDPSrr, X86::FsANDPSrm, TB_ALIGN_16 },
674 { X86::FsORPDrr, X86::FsORPDrm, TB_ALIGN_16 },
675 { X86::FsORPSrr, X86::FsORPSrm, TB_ALIGN_16 },
676 { X86::FsXORPDrr, X86::FsXORPDrm, TB_ALIGN_16 },
677 { X86::FsXORPSrr, X86::FsXORPSrm, TB_ALIGN_16 },
678 { X86::HADDPDrr, X86::HADDPDrm, TB_ALIGN_16 },
679 { X86::HADDPSrr, X86::HADDPSrm, TB_ALIGN_16 },
680 { X86::HSUBPDrr, X86::HSUBPDrm, TB_ALIGN_16 },
681 { X86::HSUBPSrr, X86::HSUBPSrm, TB_ALIGN_16 },
682 { X86::IMUL16rr, X86::IMUL16rm, 0 },
683 { X86::IMUL32rr, X86::IMUL32rm, 0 },
684 { X86::IMUL64rr, X86::IMUL64rm, 0 },
685 { X86::Int_CMPSDrr, X86::Int_CMPSDrm, 0 },
686 { X86::Int_CMPSSrr, X86::Int_CMPSSrm, 0 },
687 { X86::Int_CVTSD2SSrr, X86::Int_CVTSD2SSrm, 0 },
688 { X86::Int_CVTSI2SD64rr,X86::Int_CVTSI2SD64rm, 0 },
689 { X86::Int_CVTSI2SDrr, X86::Int_CVTSI2SDrm, 0 },
690 { X86::Int_CVTSI2SS64rr,X86::Int_CVTSI2SS64rm, 0 },
691 { X86::Int_CVTSI2SSrr, X86::Int_CVTSI2SSrm, 0 },
692 { X86::Int_CVTSS2SDrr, X86::Int_CVTSS2SDrm, 0 },
693 { X86::MAXPDrr, X86::MAXPDrm, TB_ALIGN_16 },
694 { X86::MAXPDrr_Int, X86::MAXPDrm_Int, TB_ALIGN_16 },
695 { X86::MAXPSrr, X86::MAXPSrm, TB_ALIGN_16 },
696 { X86::MAXPSrr_Int, X86::MAXPSrm_Int, TB_ALIGN_16 },
697 { X86::MAXSDrr, X86::MAXSDrm, 0 },
698 { X86::MAXSDrr_Int, X86::MAXSDrm_Int, 0 },
699 { X86::MAXSSrr, X86::MAXSSrm, 0 },
700 { X86::MAXSSrr_Int, X86::MAXSSrm_Int, 0 },
701 { X86::MINPDrr, X86::MINPDrm, TB_ALIGN_16 },
702 { X86::MINPDrr_Int, X86::MINPDrm_Int, TB_ALIGN_16 },
703 { X86::MINPSrr, X86::MINPSrm, TB_ALIGN_16 },
704 { X86::MINPSrr_Int, X86::MINPSrm_Int, TB_ALIGN_16 },
705 { X86::MINSDrr, X86::MINSDrm, 0 },
706 { X86::MINSDrr_Int, X86::MINSDrm_Int, 0 },
707 { X86::MINSSrr, X86::MINSSrm, 0 },
708 { X86::MINSSrr_Int, X86::MINSSrm_Int, 0 },
709 { X86::MPSADBWrri, X86::MPSADBWrmi, TB_ALIGN_16 },
710 { X86::MULPDrr, X86::MULPDrm, TB_ALIGN_16 },
711 { X86::MULPSrr, X86::MULPSrm, TB_ALIGN_16 },
712 { X86::MULSDrr, X86::MULSDrm, 0 },
713 { X86::MULSSrr, X86::MULSSrm, 0 },
714 { X86::OR16rr, X86::OR16rm, 0 },
715 { X86::OR32rr, X86::OR32rm, 0 },
716 { X86::OR64rr, X86::OR64rm, 0 },
717 { X86::OR8rr, X86::OR8rm, 0 },
718 { X86::ORPDrr, X86::ORPDrm, TB_ALIGN_16 },
719 { X86::ORPSrr, X86::ORPSrm, TB_ALIGN_16 },
720 { X86::PACKSSDWrr, X86::PACKSSDWrm, TB_ALIGN_16 },
721 { X86::PACKSSWBrr, X86::PACKSSWBrm, TB_ALIGN_16 },
722 { X86::PACKUSDWrr, X86::PACKUSDWrm, TB_ALIGN_16 },
723 { X86::PACKUSWBrr, X86::PACKUSWBrm, TB_ALIGN_16 },
724 { X86::PADDBrr, X86::PADDBrm, TB_ALIGN_16 },
725 { X86::PADDDrr, X86::PADDDrm, TB_ALIGN_16 },
726 { X86::PADDQrr, X86::PADDQrm, TB_ALIGN_16 },
727 { X86::PADDSBrr, X86::PADDSBrm, TB_ALIGN_16 },
728 { X86::PADDSWrr, X86::PADDSWrm, TB_ALIGN_16 },
729 { X86::PADDUSBrr, X86::PADDUSBrm, TB_ALIGN_16 },
730 { X86::PADDUSWrr, X86::PADDUSWrm, TB_ALIGN_16 },
731 { X86::PADDWrr, X86::PADDWrm, TB_ALIGN_16 },
732 { X86::PALIGNR128rr, X86::PALIGNR128rm, TB_ALIGN_16 },
733 { X86::PANDNrr, X86::PANDNrm, TB_ALIGN_16 },
734 { X86::PANDrr, X86::PANDrm, TB_ALIGN_16 },
735 { X86::PAVGBrr, X86::PAVGBrm, TB_ALIGN_16 },
736 { X86::PAVGWrr, X86::PAVGWrm, TB_ALIGN_16 },
737 { X86::PBLENDWrri, X86::PBLENDWrmi, TB_ALIGN_16 },
738 { X86::PCMPEQBrr, X86::PCMPEQBrm, TB_ALIGN_16 },
739 { X86::PCMPEQDrr, X86::PCMPEQDrm, TB_ALIGN_16 },
740 { X86::PCMPEQQrr, X86::PCMPEQQrm, TB_ALIGN_16 },
741 { X86::PCMPEQWrr, X86::PCMPEQWrm, TB_ALIGN_16 },
742 { X86::PCMPGTBrr, X86::PCMPGTBrm, TB_ALIGN_16 },
743 { X86::PCMPGTDrr, X86::PCMPGTDrm, TB_ALIGN_16 },
744 { X86::PCMPGTQrr, X86::PCMPGTQrm, TB_ALIGN_16 },
745 { X86::PCMPGTWrr, X86::PCMPGTWrm, TB_ALIGN_16 },
746 { X86::PHADDDrr, X86::PHADDDrm, TB_ALIGN_16 },
747 { X86::PHADDWrr, X86::PHADDWrm, TB_ALIGN_16 },
748 { X86::PHADDSWrr128, X86::PHADDSWrm128, TB_ALIGN_16 },
749 { X86::PHSUBDrr, X86::PHSUBDrm, TB_ALIGN_16 },
750 { X86::PHSUBSWrr128, X86::PHSUBSWrm128, TB_ALIGN_16 },
751 { X86::PHSUBWrr, X86::PHSUBWrm, TB_ALIGN_16 },
752 { X86::PINSRWrri, X86::PINSRWrmi, TB_ALIGN_16 },
753 { X86::PMADDUBSWrr128, X86::PMADDUBSWrm128, TB_ALIGN_16 },
754 { X86::PMADDWDrr, X86::PMADDWDrm, TB_ALIGN_16 },
755 { X86::PMAXSWrr, X86::PMAXSWrm, TB_ALIGN_16 },
756 { X86::PMAXUBrr, X86::PMAXUBrm, TB_ALIGN_16 },
757 { X86::PMINSWrr, X86::PMINSWrm, TB_ALIGN_16 },
758 { X86::PMINUBrr, X86::PMINUBrm, TB_ALIGN_16 },
759 { X86::PMULDQrr, X86::PMULDQrm, TB_ALIGN_16 },
760 { X86::PMULHRSWrr128, X86::PMULHRSWrm128, TB_ALIGN_16 },
761 { X86::PMULHUWrr, X86::PMULHUWrm, TB_ALIGN_16 },
762 { X86::PMULHWrr, X86::PMULHWrm, TB_ALIGN_16 },
763 { X86::PMULLDrr, X86::PMULLDrm, TB_ALIGN_16 },
764 { X86::PMULLWrr, X86::PMULLWrm, TB_ALIGN_16 },
765 { X86::PMULUDQrr, X86::PMULUDQrm, TB_ALIGN_16 },
766 { X86::PORrr, X86::PORrm, TB_ALIGN_16 },
767 { X86::PSADBWrr, X86::PSADBWrm, TB_ALIGN_16 },
768 { X86::PSHUFBrr, X86::PSHUFBrm, TB_ALIGN_16 },
769 { X86::PSIGNBrr, X86::PSIGNBrm, TB_ALIGN_16 },
770 { X86::PSIGNWrr, X86::PSIGNWrm, TB_ALIGN_16 },
771 { X86::PSIGNDrr, X86::PSIGNDrm, TB_ALIGN_16 },
772 { X86::PSLLDrr, X86::PSLLDrm, TB_ALIGN_16 },
773 { X86::PSLLQrr, X86::PSLLQrm, TB_ALIGN_16 },
774 { X86::PSLLWrr, X86::PSLLWrm, TB_ALIGN_16 },
775 { X86::PSRADrr, X86::PSRADrm, TB_ALIGN_16 },
776 { X86::PSRAWrr, X86::PSRAWrm, TB_ALIGN_16 },
777 { X86::PSRLDrr, X86::PSRLDrm, TB_ALIGN_16 },
778 { X86::PSRLQrr, X86::PSRLQrm, TB_ALIGN_16 },
779 { X86::PSRLWrr, X86::PSRLWrm, TB_ALIGN_16 },
780 { X86::PSUBBrr, X86::PSUBBrm, TB_ALIGN_16 },
781 { X86::PSUBDrr, X86::PSUBDrm, TB_ALIGN_16 },
782 { X86::PSUBSBrr, X86::PSUBSBrm, TB_ALIGN_16 },
783 { X86::PSUBSWrr, X86::PSUBSWrm, TB_ALIGN_16 },
784 { X86::PSUBWrr, X86::PSUBWrm, TB_ALIGN_16 },
785 { X86::PUNPCKHBWrr, X86::PUNPCKHBWrm, TB_ALIGN_16 },
786 { X86::PUNPCKHDQrr, X86::PUNPCKHDQrm, TB_ALIGN_16 },
787 { X86::PUNPCKHQDQrr, X86::PUNPCKHQDQrm, TB_ALIGN_16 },
788 { X86::PUNPCKHWDrr, X86::PUNPCKHWDrm, TB_ALIGN_16 },
789 { X86::PUNPCKLBWrr, X86::PUNPCKLBWrm, TB_ALIGN_16 },
790 { X86::PUNPCKLDQrr, X86::PUNPCKLDQrm, TB_ALIGN_16 },
791 { X86::PUNPCKLQDQrr, X86::PUNPCKLQDQrm, TB_ALIGN_16 },
792 { X86::PUNPCKLWDrr, X86::PUNPCKLWDrm, TB_ALIGN_16 },
793 { X86::PXORrr, X86::PXORrm, TB_ALIGN_16 },
794 { X86::SBB32rr, X86::SBB32rm, 0 },
795 { X86::SBB64rr, X86::SBB64rm, 0 },
796 { X86::SHUFPDrri, X86::SHUFPDrmi, TB_ALIGN_16 },
797 { X86::SHUFPSrri, X86::SHUFPSrmi, TB_ALIGN_16 },
798 { X86::SUB16rr, X86::SUB16rm, 0 },
799 { X86::SUB32rr, X86::SUB32rm, 0 },
800 { X86::SUB64rr, X86::SUB64rm, 0 },
801 { X86::SUB8rr, X86::SUB8rm, 0 },
802 { X86::SUBPDrr, X86::SUBPDrm, TB_ALIGN_16 },
803 { X86::SUBPSrr, X86::SUBPSrm, TB_ALIGN_16 },
804 { X86::SUBSDrr, X86::SUBSDrm, 0 },
805 { X86::SUBSSrr, X86::SUBSSrm, 0 },
806 // FIXME: TEST*rr -> swapped operand of TEST*mr.
807 { X86::UNPCKHPDrr, X86::UNPCKHPDrm, TB_ALIGN_16 },
808 { X86::UNPCKHPSrr, X86::UNPCKHPSrm, TB_ALIGN_16 },
809 { X86::UNPCKLPDrr, X86::UNPCKLPDrm, TB_ALIGN_16 },
810 { X86::UNPCKLPSrr, X86::UNPCKLPSrm, TB_ALIGN_16 },
811 { X86::XOR16rr, X86::XOR16rm, 0 },
812 { X86::XOR32rr, X86::XOR32rm, 0 },
813 { X86::XOR64rr, X86::XOR64rm, 0 },
814 { X86::XOR8rr, X86::XOR8rm, 0 },
815 { X86::XORPDrr, X86::XORPDrm, TB_ALIGN_16 },
816 { X86::XORPSrr, X86::XORPSrm, TB_ALIGN_16 },
817 // AVX 128-bit versions of foldable instructions
818 { X86::VCVTSD2SSrr, X86::VCVTSD2SSrm, 0 },
819 { X86::Int_VCVTSD2SSrr, X86::Int_VCVTSD2SSrm, 0 },
820 { X86::VCVTSI2SD64rr, X86::VCVTSI2SD64rm, 0 },
821 { X86::Int_VCVTSI2SD64rr, X86::Int_VCVTSI2SD64rm, 0 },
822 { X86::VCVTSI2SDrr, X86::VCVTSI2SDrm, 0 },
823 { X86::Int_VCVTSI2SDrr, X86::Int_VCVTSI2SDrm, 0 },
824 { X86::VCVTSI2SS64rr, X86::VCVTSI2SS64rm, 0 },
825 { X86::Int_VCVTSI2SS64rr, X86::Int_VCVTSI2SS64rm, 0 },
826 { X86::VCVTSI2SSrr, X86::VCVTSI2SSrm, 0 },
827 { X86::Int_VCVTSI2SSrr, X86::Int_VCVTSI2SSrm, 0 },
828 { X86::VCVTSS2SDrr, X86::VCVTSS2SDrm, 0 },
829 { X86::Int_VCVTSS2SDrr, X86::Int_VCVTSS2SDrm, 0 },
830 { X86::VCVTTPD2DQrr, X86::VCVTTPD2DQXrm, TB_ALIGN_16 },
831 { X86::VCVTTPS2DQrr, X86::VCVTTPS2DQrm, TB_ALIGN_16 },
832 { X86::VRSQRTSSr, X86::VRSQRTSSm, 0 },
833 { X86::VSQRTSDr, X86::VSQRTSDm, 0 },
834 { X86::VSQRTSSr, X86::VSQRTSSm, 0 },
835 { X86::VADDPDrr, X86::VADDPDrm, TB_ALIGN_16 },
836 { X86::VADDPSrr, X86::VADDPSrm, TB_ALIGN_16 },
837 { X86::VADDSDrr, X86::VADDSDrm, 0 },
838 { X86::VADDSSrr, X86::VADDSSrm, 0 },
839 { X86::VADDSUBPDrr, X86::VADDSUBPDrm, TB_ALIGN_16 },
840 { X86::VADDSUBPSrr, X86::VADDSUBPSrm, TB_ALIGN_16 },
841 { X86::VANDNPDrr, X86::VANDNPDrm, TB_ALIGN_16 },
842 { X86::VANDNPSrr, X86::VANDNPSrm, TB_ALIGN_16 },
843 { X86::VANDPDrr, X86::VANDPDrm, TB_ALIGN_16 },
844 { X86::VANDPSrr, X86::VANDPSrm, TB_ALIGN_16 },
845 { X86::VBLENDPDrri, X86::VBLENDPDrmi, TB_ALIGN_16 },
846 { X86::VBLENDPSrri, X86::VBLENDPSrmi, TB_ALIGN_16 },
847 { X86::VBLENDVPDrr, X86::VBLENDVPDrm, TB_ALIGN_16 },
848 { X86::VBLENDVPSrr, X86::VBLENDVPSrm, TB_ALIGN_16 },
849 { X86::VCMPPDrri, X86::VCMPPDrmi, TB_ALIGN_16 },
850 { X86::VCMPPSrri, X86::VCMPPSrmi, TB_ALIGN_16 },
851 { X86::VCMPSDrr, X86::VCMPSDrm, 0 },
852 { X86::VCMPSSrr, X86::VCMPSSrm, 0 },
853 { X86::VDIVPDrr, X86::VDIVPDrm, TB_ALIGN_16 },
854 { X86::VDIVPSrr, X86::VDIVPSrm, TB_ALIGN_16 },
855 { X86::VDIVSDrr, X86::VDIVSDrm, 0 },
856 { X86::VDIVSSrr, X86::VDIVSSrm, 0 },
857 { X86::VFsANDNPDrr, X86::VFsANDNPDrm, TB_ALIGN_16 },
858 { X86::VFsANDNPSrr, X86::VFsANDNPSrm, TB_ALIGN_16 },
859 { X86::VFsANDPDrr, X86::VFsANDPDrm, TB_ALIGN_16 },
860 { X86::VFsANDPSrr, X86::VFsANDPSrm, TB_ALIGN_16 },
861 { X86::VFsORPDrr, X86::VFsORPDrm, TB_ALIGN_16 },
862 { X86::VFsORPSrr, X86::VFsORPSrm, TB_ALIGN_16 },
863 { X86::VFsXORPDrr, X86::VFsXORPDrm, TB_ALIGN_16 },
864 { X86::VFsXORPSrr, X86::VFsXORPSrm, TB_ALIGN_16 },
865 { X86::VHADDPDrr, X86::VHADDPDrm, TB_ALIGN_16 },
866 { X86::VHADDPSrr, X86::VHADDPSrm, TB_ALIGN_16 },
867 { X86::VHSUBPDrr, X86::VHSUBPDrm, TB_ALIGN_16 },
868 { X86::VHSUBPSrr, X86::VHSUBPSrm, TB_ALIGN_16 },
869 { X86::Int_VCMPSDrr, X86::Int_VCMPSDrm, 0 },
870 { X86::Int_VCMPSSrr, X86::Int_VCMPSSrm, 0 },
871 { X86::VMAXPDrr, X86::VMAXPDrm, TB_ALIGN_16 },
872 { X86::VMAXPDrr_Int, X86::VMAXPDrm_Int, TB_ALIGN_16 },
873 { X86::VMAXPSrr, X86::VMAXPSrm, TB_ALIGN_16 },
874 { X86::VMAXPSrr_Int, X86::VMAXPSrm_Int, TB_ALIGN_16 },
875 { X86::VMAXSDrr, X86::VMAXSDrm, 0 },
876 { X86::VMAXSDrr_Int, X86::VMAXSDrm_Int, 0 },
877 { X86::VMAXSSrr, X86::VMAXSSrm, 0 },
878 { X86::VMAXSSrr_Int, X86::VMAXSSrm_Int, 0 },
879 { X86::VMINPDrr, X86::VMINPDrm, TB_ALIGN_16 },
880 { X86::VMINPDrr_Int, X86::VMINPDrm_Int, TB_ALIGN_16 },
881 { X86::VMINPSrr, X86::VMINPSrm, TB_ALIGN_16 },
882 { X86::VMINPSrr_Int, X86::VMINPSrm_Int, TB_ALIGN_16 },
883 { X86::VMINSDrr, X86::VMINSDrm, 0 },
884 { X86::VMINSDrr_Int, X86::VMINSDrm_Int, 0 },
885 { X86::VMINSSrr, X86::VMINSSrm, 0 },
886 { X86::VMINSSrr_Int, X86::VMINSSrm_Int, 0 },
887 { X86::VMPSADBWrri, X86::VMPSADBWrmi, TB_ALIGN_16 },
888 { X86::VMULPDrr, X86::VMULPDrm, TB_ALIGN_16 },
889 { X86::VMULPSrr, X86::VMULPSrm, TB_ALIGN_16 },
890 { X86::VMULSDrr, X86::VMULSDrm, 0 },
891 { X86::VMULSSrr, X86::VMULSSrm, 0 },
892 { X86::VORPDrr, X86::VORPDrm, TB_ALIGN_16 },
893 { X86::VORPSrr, X86::VORPSrm, TB_ALIGN_16 },
894 { X86::VPACKSSDWrr, X86::VPACKSSDWrm, TB_ALIGN_16 },
895 { X86::VPACKSSWBrr, X86::VPACKSSWBrm, TB_ALIGN_16 },
896 { X86::VPACKUSDWrr, X86::VPACKUSDWrm, TB_ALIGN_16 },
897 { X86::VPACKUSWBrr, X86::VPACKUSWBrm, TB_ALIGN_16 },
898 { X86::VPADDBrr, X86::VPADDBrm, TB_ALIGN_16 },
899 { X86::VPADDDrr, X86::VPADDDrm, TB_ALIGN_16 },
900 { X86::VPADDQrr, X86::VPADDQrm, TB_ALIGN_16 },
901 { X86::VPADDSBrr, X86::VPADDSBrm, TB_ALIGN_16 },
902 { X86::VPADDSWrr, X86::VPADDSWrm, TB_ALIGN_16 },
903 { X86::VPADDUSBrr, X86::VPADDUSBrm, TB_ALIGN_16 },
904 { X86::VPADDUSWrr, X86::VPADDUSWrm, TB_ALIGN_16 },
905 { X86::VPADDWrr, X86::VPADDWrm, TB_ALIGN_16 },
906 { X86::VPALIGNR128rr, X86::VPALIGNR128rm, TB_ALIGN_16 },
907 { X86::VPANDNrr, X86::VPANDNrm, TB_ALIGN_16 },
908 { X86::VPANDrr, X86::VPANDrm, TB_ALIGN_16 },
909 { X86::VPAVGBrr, X86::VPAVGBrm, TB_ALIGN_16 },
910 { X86::VPAVGWrr, X86::VPAVGWrm, TB_ALIGN_16 },
911 { X86::VPBLENDWrri, X86::VPBLENDWrmi, TB_ALIGN_16 },
912 { X86::VPCMPEQBrr, X86::VPCMPEQBrm, TB_ALIGN_16 },
913 { X86::VPCMPEQDrr, X86::VPCMPEQDrm, TB_ALIGN_16 },
914 { X86::VPCMPEQQrr, X86::VPCMPEQQrm, TB_ALIGN_16 },
915 { X86::VPCMPEQWrr, X86::VPCMPEQWrm, TB_ALIGN_16 },
916 { X86::VPCMPGTBrr, X86::VPCMPGTBrm, TB_ALIGN_16 },
917 { X86::VPCMPGTDrr, X86::VPCMPGTDrm, TB_ALIGN_16 },
918 { X86::VPCMPGTQrr, X86::VPCMPGTQrm, TB_ALIGN_16 },
919 { X86::VPCMPGTWrr, X86::VPCMPGTWrm, TB_ALIGN_16 },
920 { X86::VPHADDDrr, X86::VPHADDDrm, TB_ALIGN_16 },
921 { X86::VPHADDSWrr128, X86::VPHADDSWrm128, TB_ALIGN_16 },
922 { X86::VPHADDWrr, X86::VPHADDWrm, TB_ALIGN_16 },
923 { X86::VPHSUBDrr, X86::VPHSUBDrm, TB_ALIGN_16 },
924 { X86::VPHSUBSWrr128, X86::VPHSUBSWrm128, TB_ALIGN_16 },
925 { X86::VPHSUBWrr, X86::VPHSUBWrm, TB_ALIGN_16 },
926 { X86::VPERMILPDrr, X86::VPERMILPDrm, TB_ALIGN_16 },
927 { X86::VPERMILPSrr, X86::VPERMILPSrm, TB_ALIGN_16 },
928 { X86::VPINSRWrri, X86::VPINSRWrmi, TB_ALIGN_16 },
929 { X86::VPMADDUBSWrr128, X86::VPMADDUBSWrm128, TB_ALIGN_16 },
930 { X86::VPMADDWDrr, X86::VPMADDWDrm, TB_ALIGN_16 },
931 { X86::VPMAXSWrr, X86::VPMAXSWrm, TB_ALIGN_16 },
932 { X86::VPMAXUBrr, X86::VPMAXUBrm, TB_ALIGN_16 },
933 { X86::VPMINSWrr, X86::VPMINSWrm, TB_ALIGN_16 },
934 { X86::VPMINUBrr, X86::VPMINUBrm, TB_ALIGN_16 },
935 { X86::VPMULDQrr, X86::VPMULDQrm, TB_ALIGN_16 },
936 { X86::VPMULHRSWrr128, X86::VPMULHRSWrm128, TB_ALIGN_16 },
937 { X86::VPMULHUWrr, X86::VPMULHUWrm, TB_ALIGN_16 },
938 { X86::VPMULHWrr, X86::VPMULHWrm, TB_ALIGN_16 },
939 { X86::VPMULLDrr, X86::VPMULLDrm, TB_ALIGN_16 },
940 { X86::VPMULLWrr, X86::VPMULLWrm, TB_ALIGN_16 },
941 { X86::VPMULUDQrr, X86::VPMULUDQrm, TB_ALIGN_16 },
942 { X86::VPORrr, X86::VPORrm, TB_ALIGN_16 },
943 { X86::VPSADBWrr, X86::VPSADBWrm, TB_ALIGN_16 },
944 { X86::VPSHUFBrr, X86::VPSHUFBrm, TB_ALIGN_16 },
945 { X86::VPSIGNBrr, X86::VPSIGNBrm, TB_ALIGN_16 },
946 { X86::VPSIGNWrr, X86::VPSIGNWrm, TB_ALIGN_16 },
947 { X86::VPSIGNDrr, X86::VPSIGNDrm, TB_ALIGN_16 },
948 { X86::VPSLLDrr, X86::VPSLLDrm, TB_ALIGN_16 },
949 { X86::VPSLLQrr, X86::VPSLLQrm, TB_ALIGN_16 },
950 { X86::VPSLLWrr, X86::VPSLLWrm, TB_ALIGN_16 },
951 { X86::VPSRADrr, X86::VPSRADrm, TB_ALIGN_16 },
952 { X86::VPSRAWrr, X86::VPSRAWrm, TB_ALIGN_16 },
953 { X86::VPSRLDrr, X86::VPSRLDrm, TB_ALIGN_16 },
954 { X86::VPSRLQrr, X86::VPSRLQrm, TB_ALIGN_16 },
955 { X86::VPSRLWrr, X86::VPSRLWrm, TB_ALIGN_16 },
956 { X86::VPSUBBrr, X86::VPSUBBrm, TB_ALIGN_16 },
957 { X86::VPSUBDrr, X86::VPSUBDrm, TB_ALIGN_16 },
958 { X86::VPSUBSBrr, X86::VPSUBSBrm, TB_ALIGN_16 },
959 { X86::VPSUBSWrr, X86::VPSUBSWrm, TB_ALIGN_16 },
960 { X86::VPSUBWrr, X86::VPSUBWrm, TB_ALIGN_16 },
961 { X86::VPUNPCKHBWrr, X86::VPUNPCKHBWrm, TB_ALIGN_16 },
962 { X86::VPUNPCKHDQrr, X86::VPUNPCKHDQrm, TB_ALIGN_16 },
963 { X86::VPUNPCKHQDQrr, X86::VPUNPCKHQDQrm, TB_ALIGN_16 },
964 { X86::VPUNPCKHWDrr, X86::VPUNPCKHWDrm, TB_ALIGN_16 },
965 { X86::VPUNPCKLBWrr, X86::VPUNPCKLBWrm, TB_ALIGN_16 },
966 { X86::VPUNPCKLDQrr, X86::VPUNPCKLDQrm, TB_ALIGN_16 },
967 { X86::VPUNPCKLQDQrr, X86::VPUNPCKLQDQrm, TB_ALIGN_16 },
968 { X86::VPUNPCKLWDrr, X86::VPUNPCKLWDrm, TB_ALIGN_16 },
969 { X86::VPXORrr, X86::VPXORrm, TB_ALIGN_16 },
970 { X86::VSHUFPDrri, X86::VSHUFPDrmi, TB_ALIGN_16 },
971 { X86::VSHUFPSrri, X86::VSHUFPSrmi, TB_ALIGN_16 },
972 { X86::VSUBPDrr, X86::VSUBPDrm, TB_ALIGN_16 },
973 { X86::VSUBPSrr, X86::VSUBPSrm, TB_ALIGN_16 },
974 { X86::VSUBSDrr, X86::VSUBSDrm, 0 },
975 { X86::VSUBSSrr, X86::VSUBSSrm, 0 },
976 { X86::VUNPCKHPDrr, X86::VUNPCKHPDrm, TB_ALIGN_16 },
977 { X86::VUNPCKHPSrr, X86::VUNPCKHPSrm, TB_ALIGN_16 },
978 { X86::VUNPCKLPDrr, X86::VUNPCKLPDrm, TB_ALIGN_16 },
979 { X86::VUNPCKLPSrr, X86::VUNPCKLPSrm, TB_ALIGN_16 },
980 { X86::VXORPDrr, X86::VXORPDrm, TB_ALIGN_16 },
981 { X86::VXORPSrr, X86::VXORPSrm, TB_ALIGN_16 },
982 // AVX 256-bit foldable instructions
983 { X86::VADDPDYrr, X86::VADDPDYrm, TB_ALIGN_32 },
984 { X86::VADDPSYrr, X86::VADDPSYrm, TB_ALIGN_32 },
985 { X86::VADDSUBPDYrr, X86::VADDSUBPDYrm, TB_ALIGN_32 },
986 { X86::VADDSUBPSYrr, X86::VADDSUBPSYrm, TB_ALIGN_32 },
987 { X86::VANDNPDYrr, X86::VANDNPDYrm, TB_ALIGN_32 },
988 { X86::VANDNPSYrr, X86::VANDNPSYrm, TB_ALIGN_32 },
989 { X86::VANDPDYrr, X86::VANDPDYrm, TB_ALIGN_32 },
990 { X86::VANDPSYrr, X86::VANDPSYrm, TB_ALIGN_32 },
991 { X86::VBLENDPDYrri, X86::VBLENDPDYrmi, TB_ALIGN_32 },
992 { X86::VBLENDPSYrri, X86::VBLENDPSYrmi, TB_ALIGN_32 },
993 { X86::VBLENDVPDYrr, X86::VBLENDVPDYrm, TB_ALIGN_32 },
994 { X86::VBLENDVPSYrr, X86::VBLENDVPSYrm, TB_ALIGN_32 },
995 { X86::VCMPPDYrri, X86::VCMPPDYrmi, TB_ALIGN_32 },
996 { X86::VCMPPSYrri, X86::VCMPPSYrmi, TB_ALIGN_32 },
997 { X86::VDIVPDYrr, X86::VDIVPDYrm, TB_ALIGN_32 },
998 { X86::VDIVPSYrr, X86::VDIVPSYrm, TB_ALIGN_32 },
999 { X86::VHADDPDYrr, X86::VHADDPDYrm, TB_ALIGN_32 },
1000 { X86::VHADDPSYrr, X86::VHADDPSYrm, TB_ALIGN_32 },
1001 { X86::VHSUBPDYrr, X86::VHSUBPDYrm, TB_ALIGN_32 },
1002 { X86::VHSUBPSYrr, X86::VHSUBPSYrm, TB_ALIGN_32 },
1003 { X86::VINSERTF128rr, X86::VINSERTF128rm, TB_ALIGN_32 },
1004 { X86::VMAXPDYrr, X86::VMAXPDYrm, TB_ALIGN_32 },
1005 { X86::VMAXPDYrr_Int, X86::VMAXPDYrm_Int, TB_ALIGN_32 },
1006 { X86::VMAXPSYrr, X86::VMAXPSYrm, TB_ALIGN_32 },
1007 { X86::VMAXPSYrr_Int, X86::VMAXPSYrm_Int, TB_ALIGN_32 },
1008 { X86::VMINPDYrr, X86::VMINPDYrm, TB_ALIGN_32 },
1009 { X86::VMINPDYrr_Int, X86::VMINPDYrm_Int, TB_ALIGN_32 },
1010 { X86::VMINPSYrr, X86::VMINPSYrm, TB_ALIGN_32 },
1011 { X86::VMINPSYrr_Int, X86::VMINPSYrm_Int, TB_ALIGN_32 },
1012 { X86::VMULPDYrr, X86::VMULPDYrm, TB_ALIGN_32 },
1013 { X86::VMULPSYrr, X86::VMULPSYrm, TB_ALIGN_32 },
1014 { X86::VORPDYrr, X86::VORPDYrm, TB_ALIGN_32 },
1015 { X86::VORPSYrr, X86::VORPSYrm, TB_ALIGN_32 },
1016 { X86::VPERM2F128rr, X86::VPERM2F128rm, TB_ALIGN_32 },
1017 { X86::VPERMILPDYrr, X86::VPERMILPDYrm, TB_ALIGN_32 },
1018 { X86::VPERMILPSYrr, X86::VPERMILPSYrm, TB_ALIGN_32 },
1019 { X86::VSHUFPDYrri, X86::VSHUFPDYrmi, TB_ALIGN_32 },
1020 { X86::VSHUFPSYrri, X86::VSHUFPSYrmi, TB_ALIGN_32 },
1021 { X86::VSUBPDYrr, X86::VSUBPDYrm, TB_ALIGN_32 },
1022 { X86::VSUBPSYrr, X86::VSUBPSYrm, TB_ALIGN_32 },
1023 { X86::VUNPCKHPDYrr, X86::VUNPCKHPDYrm, TB_ALIGN_32 },
1024 { X86::VUNPCKHPSYrr, X86::VUNPCKHPSYrm, TB_ALIGN_32 },
1025 { X86::VUNPCKLPDYrr, X86::VUNPCKLPDYrm, TB_ALIGN_32 },
1026 { X86::VUNPCKLPSYrr, X86::VUNPCKLPSYrm, TB_ALIGN_32 },
1027 { X86::VXORPDYrr, X86::VXORPDYrm, TB_ALIGN_32 },
1028 { X86::VXORPSYrr, X86::VXORPSYrm, TB_ALIGN_32 },
1029 // AVX2 foldable instructions
1030 { X86::VINSERTI128rr, X86::VINSERTI128rm, TB_ALIGN_16 },
1031 { X86::VPACKSSDWYrr, X86::VPACKSSDWYrm, TB_ALIGN_32 },
1032 { X86::VPACKSSWBYrr, X86::VPACKSSWBYrm, TB_ALIGN_32 },
1033 { X86::VPACKUSDWYrr, X86::VPACKUSDWYrm, TB_ALIGN_32 },
1034 { X86::VPACKUSWBYrr, X86::VPACKUSWBYrm, TB_ALIGN_32 },
1035 { X86::VPADDBYrr, X86::VPADDBYrm, TB_ALIGN_32 },
1036 { X86::VPADDDYrr, X86::VPADDDYrm, TB_ALIGN_32 },
1037 { X86::VPADDQYrr, X86::VPADDQYrm, TB_ALIGN_32 },
1038 { X86::VPADDSBYrr, X86::VPADDSBYrm, TB_ALIGN_32 },
1039 { X86::VPADDSWYrr, X86::VPADDSWYrm, TB_ALIGN_32 },
1040 { X86::VPADDUSBYrr, X86::VPADDUSBYrm, TB_ALIGN_32 },
1041 { X86::VPADDUSWYrr, X86::VPADDUSWYrm, TB_ALIGN_32 },
1042 { X86::VPADDWYrr, X86::VPADDWYrm, TB_ALIGN_32 },
1043 { X86::VPALIGNR256rr, X86::VPALIGNR256rm, TB_ALIGN_32 },
1044 { X86::VPANDNYrr, X86::VPANDNYrm, TB_ALIGN_32 },
1045 { X86::VPANDYrr, X86::VPANDYrm, TB_ALIGN_32 },
1046 { X86::VPAVGBYrr, X86::VPAVGBYrm, TB_ALIGN_32 },
1047 { X86::VPAVGWYrr, X86::VPAVGWYrm, TB_ALIGN_32 },
1048 { X86::VPBLENDDrri, X86::VPBLENDDrmi, TB_ALIGN_32 },
1049 { X86::VPBLENDDYrri, X86::VPBLENDDYrmi, TB_ALIGN_32 },
1050 { X86::VPBLENDWYrri, X86::VPBLENDWYrmi, TB_ALIGN_32 },
1051 { X86::VPCMPEQBYrr, X86::VPCMPEQBYrm, TB_ALIGN_32 },
1052 { X86::VPCMPEQDYrr, X86::VPCMPEQDYrm, TB_ALIGN_32 },
1053 { X86::VPCMPEQQYrr, X86::VPCMPEQQYrm, TB_ALIGN_32 },
1054 { X86::VPCMPEQWYrr, X86::VPCMPEQWYrm, TB_ALIGN_32 },
1055 { X86::VPCMPGTBYrr, X86::VPCMPGTBYrm, TB_ALIGN_32 },
1056 { X86::VPCMPGTDYrr, X86::VPCMPGTDYrm, TB_ALIGN_32 },
1057 { X86::VPCMPGTQYrr, X86::VPCMPGTQYrm, TB_ALIGN_32 },
1058 { X86::VPCMPGTWYrr, X86::VPCMPGTWYrm, TB_ALIGN_32 },
1059 { X86::VPERM2I128rr, X86::VPERM2I128rm, TB_ALIGN_32 },
1060 { X86::VPERMDYrr, X86::VPERMDYrm, TB_ALIGN_32 },
1061 { X86::VPERMPDYri, X86::VPERMPDYmi, TB_ALIGN_32 },
1062 { X86::VPERMPSYrr, X86::VPERMPSYrm, TB_ALIGN_32 },
1063 { X86::VPERMQYri, X86::VPERMQYmi, TB_ALIGN_32 },
1064 { X86::VPHADDDYrr, X86::VPHADDDYrm, TB_ALIGN_32 },
1065 { X86::VPHADDSWrr256, X86::VPHADDSWrm256, TB_ALIGN_32 },
1066 { X86::VPHADDWYrr, X86::VPHADDWYrm, TB_ALIGN_32 },
1067 { X86::VPHSUBDYrr, X86::VPHSUBDYrm, TB_ALIGN_32 },
1068 { X86::VPHSUBSWrr256, X86::VPHSUBSWrm256, TB_ALIGN_32 },
1069 { X86::VPHSUBWYrr, X86::VPHSUBWYrm, TB_ALIGN_32 },
1070 { X86::VPMADDUBSWrr256, X86::VPMADDUBSWrm256, TB_ALIGN_32 },
1071 { X86::VPMADDWDYrr, X86::VPMADDWDYrm, TB_ALIGN_32 },
1072 { X86::VPMAXSWYrr, X86::VPMAXSWYrm, TB_ALIGN_32 },
1073 { X86::VPMAXUBYrr, X86::VPMAXUBYrm, TB_ALIGN_32 },
1074 { X86::VPMINSWYrr, X86::VPMINSWYrm, TB_ALIGN_32 },
1075 { X86::VPMINUBYrr, X86::VPMINUBYrm, TB_ALIGN_32 },
1076 { X86::VMPSADBWYrri, X86::VMPSADBWYrmi, TB_ALIGN_32 },
1077 { X86::VPMULDQYrr, X86::VPMULDQYrm, TB_ALIGN_32 },
1078 { X86::VPMULHRSWrr256, X86::VPMULHRSWrm256, TB_ALIGN_32 },
1079 { X86::VPMULHUWYrr, X86::VPMULHUWYrm, TB_ALIGN_32 },
1080 { X86::VPMULHWYrr, X86::VPMULHWYrm, TB_ALIGN_32 },
1081 { X86::VPMULLDYrr, X86::VPMULLDYrm, TB_ALIGN_32 },
1082 { X86::VPMULLWYrr, X86::VPMULLWYrm, TB_ALIGN_32 },
1083 { X86::VPMULUDQYrr, X86::VPMULUDQYrm, TB_ALIGN_32 },
1084 { X86::VPORYrr, X86::VPORYrm, TB_ALIGN_32 },
1085 { X86::VPSADBWYrr, X86::VPSADBWYrm, TB_ALIGN_32 },
1086 { X86::VPSHUFBYrr, X86::VPSHUFBYrm, TB_ALIGN_32 },
1087 { X86::VPSIGNBYrr, X86::VPSIGNBYrm, TB_ALIGN_32 },
1088 { X86::VPSIGNWYrr, X86::VPSIGNWYrm, TB_ALIGN_32 },
1089 { X86::VPSIGNDYrr, X86::VPSIGNDYrm, TB_ALIGN_32 },
1090 { X86::VPSLLDYrr, X86::VPSLLDYrm, TB_ALIGN_16 },
1091 { X86::VPSLLQYrr, X86::VPSLLQYrm, TB_ALIGN_16 },
1092 { X86::VPSLLWYrr, X86::VPSLLWYrm, TB_ALIGN_16 },
1093 { X86::VPSLLVDrr, X86::VPSLLVDrm, TB_ALIGN_16 },
1094 { X86::VPSLLVDYrr, X86::VPSLLVDYrm, TB_ALIGN_32 },
1095 { X86::VPSLLVQrr, X86::VPSLLVQrm, TB_ALIGN_16 },
1096 { X86::VPSLLVQYrr, X86::VPSLLVQYrm, TB_ALIGN_32 },
1097 { X86::VPSRADYrr, X86::VPSRADYrm, TB_ALIGN_16 },
1098 { X86::VPSRAWYrr, X86::VPSRAWYrm, TB_ALIGN_16 },
1099 { X86::VPSRAVDrr, X86::VPSRAVDrm, TB_ALIGN_16 },
1100 { X86::VPSRAVDYrr, X86::VPSRAVDYrm, TB_ALIGN_32 },
1101 { X86::VPSRLDYrr, X86::VPSRLDYrm, TB_ALIGN_16 },
1102 { X86::VPSRLQYrr, X86::VPSRLQYrm, TB_ALIGN_16 },
1103 { X86::VPSRLWYrr, X86::VPSRLWYrm, TB_ALIGN_16 },
1104 { X86::VPSRLVDrr, X86::VPSRLVDrm, TB_ALIGN_16 },
1105 { X86::VPSRLVDYrr, X86::VPSRLVDYrm, TB_ALIGN_32 },
1106 { X86::VPSRLVQrr, X86::VPSRLVQrm, TB_ALIGN_16 },
1107 { X86::VPSRLVQYrr, X86::VPSRLVQYrm, TB_ALIGN_32 },
1108 { X86::VPSUBBYrr, X86::VPSUBBYrm, TB_ALIGN_32 },
1109 { X86::VPSUBDYrr, X86::VPSUBDYrm, TB_ALIGN_32 },
1110 { X86::VPSUBSBYrr, X86::VPSUBSBYrm, TB_ALIGN_32 },
1111 { X86::VPSUBSWYrr, X86::VPSUBSWYrm, TB_ALIGN_32 },
1112 { X86::VPSUBWYrr, X86::VPSUBWYrm, TB_ALIGN_32 },
1113 { X86::VPUNPCKHBWYrr, X86::VPUNPCKHBWYrm, TB_ALIGN_32 },
1114 { X86::VPUNPCKHDQYrr, X86::VPUNPCKHDQYrm, TB_ALIGN_32 },
1115 { X86::VPUNPCKHQDQYrr, X86::VPUNPCKHQDQYrm, TB_ALIGN_16 },
1116 { X86::VPUNPCKHWDYrr, X86::VPUNPCKHWDYrm, TB_ALIGN_32 },
1117 { X86::VPUNPCKLBWYrr, X86::VPUNPCKLBWYrm, TB_ALIGN_32 },
1118 { X86::VPUNPCKLDQYrr, X86::VPUNPCKLDQYrm, TB_ALIGN_32 },
1119 { X86::VPUNPCKLQDQYrr, X86::VPUNPCKLQDQYrm, TB_ALIGN_32 },
1120 { X86::VPUNPCKLWDYrr, X86::VPUNPCKLWDYrm, TB_ALIGN_32 },
1121 { X86::VPXORYrr, X86::VPXORYrm, TB_ALIGN_32 },
1122 // FIXME: add AVX 256-bit foldable instructions
1124 // FMA4 foldable patterns
1125 { X86::VFMADDSS4rr, X86::VFMADDSS4mr, TB_ALIGN_16 },
1126 { X86::VFMADDSD4rr, X86::VFMADDSD4mr, TB_ALIGN_16 },
1127 { X86::VFMADDPS4rr, X86::VFMADDPS4mr, TB_ALIGN_16 },
1128 { X86::VFMADDPD4rr, X86::VFMADDPD4mr, TB_ALIGN_16 },
1129 { X86::VFMADDPS4rrY, X86::VFMADDPS4mrY, TB_ALIGN_32 },
1130 { X86::VFMADDPD4rrY, X86::VFMADDPD4mrY, TB_ALIGN_32 },
1131 { X86::VFNMADDPS4rr, X86::VFNMADDPS4mr, TB_ALIGN_16 },
1132 { X86::VFNMADDPD4rr, X86::VFNMADDPD4mr, TB_ALIGN_16 },
1133 { X86::VFNMADDPS4rrY, X86::VFNMADDPS4mrY, TB_ALIGN_32 },
1134 { X86::VFNMADDPD4rrY, X86::VFNMADDPD4mrY, TB_ALIGN_32 },
1135 { X86::VFMSUBSS4rr, X86::VFMSUBSS4mr, TB_ALIGN_16 },
1136 { X86::VFMSUBSD4rr, X86::VFMSUBSD4mr, TB_ALIGN_16 },
1137 { X86::VFMSUBPS4rr, X86::VFMSUBPS4mr, TB_ALIGN_16 },
1138 { X86::VFMSUBPD4rr, X86::VFMSUBPD4mr, TB_ALIGN_16 },
1139 { X86::VFMSUBPS4rrY, X86::VFMSUBPS4mrY, TB_ALIGN_32 },
1140 { X86::VFMSUBPD4rrY, X86::VFMSUBPD4mrY, TB_ALIGN_32 },
1141 { X86::VFNMSUBPS4rr, X86::VFNMSUBPS4mr, TB_ALIGN_16 },
1142 { X86::VFNMSUBPD4rr, X86::VFNMSUBPD4mr, TB_ALIGN_16 },
1143 { X86::VFNMSUBPS4rrY, X86::VFNMSUBPS4mrY, TB_ALIGN_32 },
1144 { X86::VFNMSUBPD4rrY, X86::VFNMSUBPD4mrY, TB_ALIGN_32 },
1145 { X86::VFMADDSUBPS4rr, X86::VFMADDSUBPS4mr, TB_ALIGN_16 },
1146 { X86::VFMADDSUBPD4rr, X86::VFMADDSUBPD4mr, TB_ALIGN_16 },
1147 { X86::VFMADDSUBPS4rrY, X86::VFMADDSUBPS4mrY, TB_ALIGN_32 },
1148 { X86::VFMADDSUBPD4rrY, X86::VFMADDSUBPD4mrY, TB_ALIGN_32 },
1149 { X86::VFMSUBADDPS4rr, X86::VFMSUBADDPS4mr, TB_ALIGN_16 },
1150 { X86::VFMSUBADDPD4rr, X86::VFMSUBADDPD4mr, TB_ALIGN_16 },
1151 { X86::VFMSUBADDPS4rrY, X86::VFMSUBADDPS4mrY, TB_ALIGN_32 },
1152 { X86::VFMSUBADDPD4rrY, X86::VFMSUBADDPD4mrY, TB_ALIGN_32 },
1154 // BMI/BMI2 foldable instructions
1155 { X86::MULX32rr, X86::MULX32rm, 0 },
1156 { X86::MULX64rr, X86::MULX64rm, 0 },
1159 for (unsigned i = 0, e = array_lengthof(OpTbl2); i != e; ++i) {
1160 unsigned RegOp = OpTbl2[i].RegOp;
1161 unsigned MemOp = OpTbl2[i].MemOp;
1162 unsigned Flags = OpTbl2[i].Flags;
1163 AddTableEntry(RegOp2MemOpTable2, MemOp2RegOpTable,
1165 // Index 2, folded load
1166 Flags | TB_INDEX_2 | TB_FOLDED_LOAD);
1169 static const X86OpTblEntry OpTbl3[] = {
1170 // FMA foldable instructions
1171 { X86::VFMADDSSr231r, X86::VFMADDSSr231m, 0 },
1172 { X86::VFMADDSDr231r, X86::VFMADDSDr231m, 0 },
1173 { X86::VFMADDSSr132r, X86::VFMADDSSr132m, 0 },
1174 { X86::VFMADDSDr132r, X86::VFMADDSDr132m, 0 },
1175 { X86::VFMADDSSr213r, X86::VFMADDSSr213m, 0 },
1176 { X86::VFMADDSDr213r, X86::VFMADDSDr213m, 0 },
1177 { X86::VFMADDSSr213r_Int, X86::VFMADDSSr213m_Int, 0 },
1178 { X86::VFMADDSDr213r_Int, X86::VFMADDSDr213m_Int, 0 },
1180 { X86::VFMADDPSr231r, X86::VFMADDPSr231m, TB_ALIGN_16 },
1181 { X86::VFMADDPDr231r, X86::VFMADDPDr231m, TB_ALIGN_16 },
1182 { X86::VFMADDPSr132r, X86::VFMADDPSr132m, TB_ALIGN_16 },
1183 { X86::VFMADDPDr132r, X86::VFMADDPDr132m, TB_ALIGN_16 },
1184 { X86::VFMADDPSr213r, X86::VFMADDPSr213m, TB_ALIGN_16 },
1185 { X86::VFMADDPDr213r, X86::VFMADDPDr213m, TB_ALIGN_16 },
1186 { X86::VFMADDPSr231rY, X86::VFMADDPSr231mY, TB_ALIGN_32 },
1187 { X86::VFMADDPDr231rY, X86::VFMADDPDr231mY, TB_ALIGN_32 },
1188 { X86::VFMADDPSr132rY, X86::VFMADDPSr132mY, TB_ALIGN_32 },
1189 { X86::VFMADDPDr132rY, X86::VFMADDPDr132mY, TB_ALIGN_32 },
1190 { X86::VFMADDPSr213rY, X86::VFMADDPSr213mY, TB_ALIGN_32 },
1191 { X86::VFMADDPDr213rY, X86::VFMADDPDr213mY, TB_ALIGN_32 },
1193 { X86::VFNMADDSSr231r, X86::VFNMADDSSr231m, 0 },
1194 { X86::VFNMADDSDr231r, X86::VFNMADDSDr231m, 0 },
1195 { X86::VFNMADDSSr132r, X86::VFNMADDSSr132m, 0 },
1196 { X86::VFNMADDSDr132r, X86::VFNMADDSDr132m, 0 },
1197 { X86::VFNMADDSSr213r, X86::VFNMADDSSr213m, 0 },
1198 { X86::VFNMADDSDr213r, X86::VFNMADDSDr213m, 0 },
1199 { X86::VFNMADDSSr213r_Int, X86::VFNMADDSSr213m_Int, 0 },
1200 { X86::VFNMADDSDr213r_Int, X86::VFNMADDSDr213m_Int, 0 },
1202 { X86::VFNMADDPSr231r, X86::VFNMADDPSr231m, TB_ALIGN_16 },
1203 { X86::VFNMADDPDr231r, X86::VFNMADDPDr231m, TB_ALIGN_16 },
1204 { X86::VFNMADDPSr132r, X86::VFNMADDPSr132m, TB_ALIGN_16 },
1205 { X86::VFNMADDPDr132r, X86::VFNMADDPDr132m, TB_ALIGN_16 },
1206 { X86::VFNMADDPSr213r, X86::VFNMADDPSr213m, TB_ALIGN_16 },
1207 { X86::VFNMADDPDr213r, X86::VFNMADDPDr213m, TB_ALIGN_16 },
1208 { X86::VFNMADDPSr231rY, X86::VFNMADDPSr231mY, TB_ALIGN_32 },
1209 { X86::VFNMADDPDr231rY, X86::VFNMADDPDr231mY, TB_ALIGN_32 },
1210 { X86::VFNMADDPSr132rY, X86::VFNMADDPSr132mY, TB_ALIGN_32 },
1211 { X86::VFNMADDPDr132rY, X86::VFNMADDPDr132mY, TB_ALIGN_32 },
1212 { X86::VFNMADDPSr213rY, X86::VFNMADDPSr213mY, TB_ALIGN_32 },
1213 { X86::VFNMADDPDr213rY, X86::VFNMADDPDr213mY, TB_ALIGN_32 },
1215 { X86::VFMSUBSSr231r, X86::VFMSUBSSr231m, 0 },
1216 { X86::VFMSUBSDr231r, X86::VFMSUBSDr231m, 0 },
1217 { X86::VFMSUBSSr132r, X86::VFMSUBSSr132m, 0 },
1218 { X86::VFMSUBSDr132r, X86::VFMSUBSDr132m, 0 },
1219 { X86::VFMSUBSSr213r, X86::VFMSUBSSr213m, 0 },
1220 { X86::VFMSUBSDr213r, X86::VFMSUBSDr213m, 0 },
1221 { X86::VFMSUBSSr213r_Int, X86::VFMSUBSSr213m_Int, 0 },
1222 { X86::VFMSUBSDr213r_Int, X86::VFMSUBSDr213m_Int, 0 },
1224 { X86::VFMSUBPSr231r, X86::VFMSUBPSr231m, TB_ALIGN_16 },
1225 { X86::VFMSUBPDr231r, X86::VFMSUBPDr231m, TB_ALIGN_16 },
1226 { X86::VFMSUBPSr132r, X86::VFMSUBPSr132m, TB_ALIGN_16 },
1227 { X86::VFMSUBPDr132r, X86::VFMSUBPDr132m, TB_ALIGN_16 },
1228 { X86::VFMSUBPSr213r, X86::VFMSUBPSr213m, TB_ALIGN_16 },
1229 { X86::VFMSUBPDr213r, X86::VFMSUBPDr213m, TB_ALIGN_16 },
1230 { X86::VFMSUBPSr231rY, X86::VFMSUBPSr231mY, TB_ALIGN_32 },
1231 { X86::VFMSUBPDr231rY, X86::VFMSUBPDr231mY, TB_ALIGN_32 },
1232 { X86::VFMSUBPSr132rY, X86::VFMSUBPSr132mY, TB_ALIGN_32 },
1233 { X86::VFMSUBPDr132rY, X86::VFMSUBPDr132mY, TB_ALIGN_32 },
1234 { X86::VFMSUBPSr213rY, X86::VFMSUBPSr213mY, TB_ALIGN_32 },
1235 { X86::VFMSUBPDr213rY, X86::VFMSUBPDr213mY, TB_ALIGN_32 },
1237 { X86::VFNMSUBSSr231r, X86::VFNMSUBSSr231m, 0 },
1238 { X86::VFNMSUBSDr231r, X86::VFNMSUBSDr231m, 0 },
1239 { X86::VFNMSUBSSr132r, X86::VFNMSUBSSr132m, 0 },
1240 { X86::VFNMSUBSDr132r, X86::VFNMSUBSDr132m, 0 },
1241 { X86::VFNMSUBSSr213r, X86::VFNMSUBSSr213m, 0 },
1242 { X86::VFNMSUBSDr213r, X86::VFNMSUBSDr213m, 0 },
1243 { X86::VFNMSUBSSr213r_Int, X86::VFNMSUBSSr213m_Int, 0 },
1244 { X86::VFNMSUBSDr213r_Int, X86::VFNMSUBSDr213m_Int, 0 },
1246 { X86::VFNMSUBPSr231r, X86::VFNMSUBPSr231m, TB_ALIGN_16 },
1247 { X86::VFNMSUBPDr231r, X86::VFNMSUBPDr231m, TB_ALIGN_16 },
1248 { X86::VFNMSUBPSr132r, X86::VFNMSUBPSr132m, TB_ALIGN_16 },
1249 { X86::VFNMSUBPDr132r, X86::VFNMSUBPDr132m, TB_ALIGN_16 },
1250 { X86::VFNMSUBPSr213r, X86::VFNMSUBPSr213m, TB_ALIGN_16 },
1251 { X86::VFNMSUBPDr213r, X86::VFNMSUBPDr213m, TB_ALIGN_16 },
1252 { X86::VFNMSUBPSr231rY, X86::VFNMSUBPSr231mY, TB_ALIGN_32 },
1253 { X86::VFNMSUBPDr231rY, X86::VFNMSUBPDr231mY, TB_ALIGN_32 },
1254 { X86::VFNMSUBPSr132rY, X86::VFNMSUBPSr132mY, TB_ALIGN_32 },
1255 { X86::VFNMSUBPDr132rY, X86::VFNMSUBPDr132mY, TB_ALIGN_32 },
1256 { X86::VFNMSUBPSr213rY, X86::VFNMSUBPSr213mY, TB_ALIGN_32 },
1257 { X86::VFNMSUBPDr213rY, X86::VFNMSUBPDr213mY, TB_ALIGN_32 },
1259 { X86::VFMADDSUBPSr231r, X86::VFMADDSUBPSr231m, TB_ALIGN_16 },
1260 { X86::VFMADDSUBPDr231r, X86::VFMADDSUBPDr231m, TB_ALIGN_16 },
1261 { X86::VFMADDSUBPSr132r, X86::VFMADDSUBPSr132m, TB_ALIGN_16 },
1262 { X86::VFMADDSUBPDr132r, X86::VFMADDSUBPDr132m, TB_ALIGN_16 },
1263 { X86::VFMADDSUBPSr213r, X86::VFMADDSUBPSr213m, TB_ALIGN_16 },
1264 { X86::VFMADDSUBPDr213r, X86::VFMADDSUBPDr213m, TB_ALIGN_16 },
1265 { X86::VFMADDSUBPSr231rY, X86::VFMADDSUBPSr231mY, TB_ALIGN_32 },
1266 { X86::VFMADDSUBPDr231rY, X86::VFMADDSUBPDr231mY, TB_ALIGN_32 },
1267 { X86::VFMADDSUBPSr132rY, X86::VFMADDSUBPSr132mY, TB_ALIGN_32 },
1268 { X86::VFMADDSUBPDr132rY, X86::VFMADDSUBPDr132mY, TB_ALIGN_32 },
1269 { X86::VFMADDSUBPSr213rY, X86::VFMADDSUBPSr213mY, TB_ALIGN_32 },
1270 { X86::VFMADDSUBPDr213rY, X86::VFMADDSUBPDr213mY, TB_ALIGN_32 },
1272 { X86::VFMSUBADDPSr231r, X86::VFMSUBADDPSr231m, TB_ALIGN_16 },
1273 { X86::VFMSUBADDPDr231r, X86::VFMSUBADDPDr231m, TB_ALIGN_16 },
1274 { X86::VFMSUBADDPSr132r, X86::VFMSUBADDPSr132m, TB_ALIGN_16 },
1275 { X86::VFMSUBADDPDr132r, X86::VFMSUBADDPDr132m, TB_ALIGN_16 },
1276 { X86::VFMSUBADDPSr213r, X86::VFMSUBADDPSr213m, TB_ALIGN_16 },
1277 { X86::VFMSUBADDPDr213r, X86::VFMSUBADDPDr213m, TB_ALIGN_16 },
1278 { X86::VFMSUBADDPSr231rY, X86::VFMSUBADDPSr231mY, TB_ALIGN_32 },
1279 { X86::VFMSUBADDPDr231rY, X86::VFMSUBADDPDr231mY, TB_ALIGN_32 },
1280 { X86::VFMSUBADDPSr132rY, X86::VFMSUBADDPSr132mY, TB_ALIGN_32 },
1281 { X86::VFMSUBADDPDr132rY, X86::VFMSUBADDPDr132mY, TB_ALIGN_32 },
1282 { X86::VFMSUBADDPSr213rY, X86::VFMSUBADDPSr213mY, TB_ALIGN_32 },
1283 { X86::VFMSUBADDPDr213rY, X86::VFMSUBADDPDr213mY, TB_ALIGN_32 },
1285 // FMA4 foldable patterns
1286 { X86::VFMADDSS4rr, X86::VFMADDSS4rm, TB_ALIGN_16 },
1287 { X86::VFMADDSD4rr, X86::VFMADDSD4rm, TB_ALIGN_16 },
1288 { X86::VFMADDPS4rr, X86::VFMADDPS4rm, TB_ALIGN_16 },
1289 { X86::VFMADDPD4rr, X86::VFMADDPD4rm, TB_ALIGN_16 },
1290 { X86::VFMADDPS4rrY, X86::VFMADDPS4rmY, TB_ALIGN_32 },
1291 { X86::VFMADDPD4rrY, X86::VFMADDPD4rmY, TB_ALIGN_32 },
1292 { X86::VFNMADDPS4rr, X86::VFNMADDPS4rm, TB_ALIGN_16 },
1293 { X86::VFNMADDPD4rr, X86::VFNMADDPD4rm, TB_ALIGN_16 },
1294 { X86::VFNMADDPS4rrY, X86::VFNMADDPS4rmY, TB_ALIGN_32 },
1295 { X86::VFNMADDPD4rrY, X86::VFNMADDPD4rmY, TB_ALIGN_32 },
1296 { X86::VFMSUBSS4rr, X86::VFMSUBSS4rm, TB_ALIGN_16 },
1297 { X86::VFMSUBSD4rr, X86::VFMSUBSD4rm, TB_ALIGN_16 },
1298 { X86::VFMSUBPS4rr, X86::VFMSUBPS4rm, TB_ALIGN_16 },
1299 { X86::VFMSUBPD4rr, X86::VFMSUBPD4rm, TB_ALIGN_16 },
1300 { X86::VFMSUBPS4rrY, X86::VFMSUBPS4rmY, TB_ALIGN_32 },
1301 { X86::VFMSUBPD4rrY, X86::VFMSUBPD4rmY, TB_ALIGN_32 },
1302 { X86::VFNMSUBPS4rr, X86::VFNMSUBPS4rm, TB_ALIGN_16 },
1303 { X86::VFNMSUBPD4rr, X86::VFNMSUBPD4rm, TB_ALIGN_16 },
1304 { X86::VFNMSUBPS4rrY, X86::VFNMSUBPS4rmY, TB_ALIGN_32 },
1305 { X86::VFNMSUBPD4rrY, X86::VFNMSUBPD4rmY, TB_ALIGN_32 },
1306 { X86::VFMADDSUBPS4rr, X86::VFMADDSUBPS4rm, TB_ALIGN_16 },
1307 { X86::VFMADDSUBPD4rr, X86::VFMADDSUBPD4rm, TB_ALIGN_16 },
1308 { X86::VFMADDSUBPS4rrY, X86::VFMADDSUBPS4rmY, TB_ALIGN_32 },
1309 { X86::VFMADDSUBPD4rrY, X86::VFMADDSUBPD4rmY, TB_ALIGN_32 },
1310 { X86::VFMSUBADDPS4rr, X86::VFMSUBADDPS4rm, TB_ALIGN_16 },
1311 { X86::VFMSUBADDPD4rr, X86::VFMSUBADDPD4rm, TB_ALIGN_16 },
1312 { X86::VFMSUBADDPS4rrY, X86::VFMSUBADDPS4rmY, TB_ALIGN_32 },
1313 { X86::VFMSUBADDPD4rrY, X86::VFMSUBADDPD4rmY, TB_ALIGN_32 },
1316 for (unsigned i = 0, e = array_lengthof(OpTbl3); i != e; ++i) {
1317 unsigned RegOp = OpTbl3[i].RegOp;
1318 unsigned MemOp = OpTbl3[i].MemOp;
1319 unsigned Flags = OpTbl3[i].Flags;
1320 AddTableEntry(RegOp2MemOpTable3, MemOp2RegOpTable,
1322 // Index 3, folded load
1323 Flags | TB_INDEX_3 | TB_FOLDED_LOAD);
1329 X86InstrInfo::AddTableEntry(RegOp2MemOpTableType &R2MTable,
1330 MemOp2RegOpTableType &M2RTable,
1331 unsigned RegOp, unsigned MemOp, unsigned Flags) {
1332 if ((Flags & TB_NO_FORWARD) == 0) {
1333 assert(!R2MTable.count(RegOp) && "Duplicate entry!");
1334 R2MTable[RegOp] = std::make_pair(MemOp, Flags);
1336 if ((Flags & TB_NO_REVERSE) == 0) {
1337 assert(!M2RTable.count(MemOp) &&
1338 "Duplicated entries in unfolding maps?");
1339 M2RTable[MemOp] = std::make_pair(RegOp, Flags);
1344 X86InstrInfo::isCoalescableExtInstr(const MachineInstr &MI,
1345 unsigned &SrcReg, unsigned &DstReg,
1346 unsigned &SubIdx) const {
1347 switch (MI.getOpcode()) {
1349 case X86::MOVSX16rr8:
1350 case X86::MOVZX16rr8:
1351 case X86::MOVSX32rr8:
1352 case X86::MOVZX32rr8:
1353 case X86::MOVSX64rr8:
1354 case X86::MOVZX64rr8:
1355 if (!TM.getSubtarget<X86Subtarget>().is64Bit())
1356 // It's not always legal to reference the low 8-bit of the larger
1357 // register in 32-bit mode.
1359 case X86::MOVSX32rr16:
1360 case X86::MOVZX32rr16:
1361 case X86::MOVSX64rr16:
1362 case X86::MOVZX64rr16:
1363 case X86::MOVSX64rr32:
1364 case X86::MOVZX64rr32: {
1365 if (MI.getOperand(0).getSubReg() || MI.getOperand(1).getSubReg())
1368 SrcReg = MI.getOperand(1).getReg();
1369 DstReg = MI.getOperand(0).getReg();
1370 switch (MI.getOpcode()) {
1371 default: llvm_unreachable("Unreachable!");
1372 case X86::MOVSX16rr8:
1373 case X86::MOVZX16rr8:
1374 case X86::MOVSX32rr8:
1375 case X86::MOVZX32rr8:
1376 case X86::MOVSX64rr8:
1377 case X86::MOVZX64rr8:
1378 SubIdx = X86::sub_8bit;
1380 case X86::MOVSX32rr16:
1381 case X86::MOVZX32rr16:
1382 case X86::MOVSX64rr16:
1383 case X86::MOVZX64rr16:
1384 SubIdx = X86::sub_16bit;
1386 case X86::MOVSX64rr32:
1387 case X86::MOVZX64rr32:
1388 SubIdx = X86::sub_32bit;
1397 /// isFrameOperand - Return true and the FrameIndex if the specified
1398 /// operand and follow operands form a reference to the stack frame.
1399 bool X86InstrInfo::isFrameOperand(const MachineInstr *MI, unsigned int Op,
1400 int &FrameIndex) const {
1401 if (MI->getOperand(Op).isFI() && MI->getOperand(Op+1).isImm() &&
1402 MI->getOperand(Op+2).isReg() && MI->getOperand(Op+3).isImm() &&
1403 MI->getOperand(Op+1).getImm() == 1 &&
1404 MI->getOperand(Op+2).getReg() == 0 &&
1405 MI->getOperand(Op+3).getImm() == 0) {
1406 FrameIndex = MI->getOperand(Op).getIndex();
1412 static bool isFrameLoadOpcode(int Opcode) {
1428 case X86::VMOVAPSrm:
1429 case X86::VMOVAPDrm:
1430 case X86::VMOVDQArm:
1431 case X86::VMOVAPSYrm:
1432 case X86::VMOVAPDYrm:
1433 case X86::VMOVDQAYrm:
1434 case X86::MMX_MOVD64rm:
1435 case X86::MMX_MOVQ64rm:
1440 static bool isFrameStoreOpcode(int Opcode) {
1447 case X86::ST_FpP64m:
1455 case X86::VMOVAPSmr:
1456 case X86::VMOVAPDmr:
1457 case X86::VMOVDQAmr:
1458 case X86::VMOVAPSYmr:
1459 case X86::VMOVAPDYmr:
1460 case X86::VMOVDQAYmr:
1461 case X86::MMX_MOVD64mr:
1462 case X86::MMX_MOVQ64mr:
1463 case X86::MMX_MOVNTQmr:
1469 unsigned X86InstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
1470 int &FrameIndex) const {
1471 if (isFrameLoadOpcode(MI->getOpcode()))
1472 if (MI->getOperand(0).getSubReg() == 0 && isFrameOperand(MI, 1, FrameIndex))
1473 return MI->getOperand(0).getReg();
1477 unsigned X86InstrInfo::isLoadFromStackSlotPostFE(const MachineInstr *MI,
1478 int &FrameIndex) const {
1479 if (isFrameLoadOpcode(MI->getOpcode())) {
1481 if ((Reg = isLoadFromStackSlot(MI, FrameIndex)))
1483 // Check for post-frame index elimination operations
1484 const MachineMemOperand *Dummy;
1485 return hasLoadFromStackSlot(MI, Dummy, FrameIndex);
1490 unsigned X86InstrInfo::isStoreToStackSlot(const MachineInstr *MI,
1491 int &FrameIndex) const {
1492 if (isFrameStoreOpcode(MI->getOpcode()))
1493 if (MI->getOperand(X86::AddrNumOperands).getSubReg() == 0 &&
1494 isFrameOperand(MI, 0, FrameIndex))
1495 return MI->getOperand(X86::AddrNumOperands).getReg();
1499 unsigned X86InstrInfo::isStoreToStackSlotPostFE(const MachineInstr *MI,
1500 int &FrameIndex) const {
1501 if (isFrameStoreOpcode(MI->getOpcode())) {
1503 if ((Reg = isStoreToStackSlot(MI, FrameIndex)))
1505 // Check for post-frame index elimination operations
1506 const MachineMemOperand *Dummy;
1507 return hasStoreToStackSlot(MI, Dummy, FrameIndex);
1512 /// regIsPICBase - Return true if register is PIC base (i.e.g defined by
1514 static bool regIsPICBase(unsigned BaseReg, const MachineRegisterInfo &MRI) {
1515 // Don't waste compile time scanning use-def chains of physregs.
1516 if (!TargetRegisterInfo::isVirtualRegister(BaseReg))
1518 bool isPICBase = false;
1519 for (MachineRegisterInfo::def_iterator I = MRI.def_begin(BaseReg),
1520 E = MRI.def_end(); I != E; ++I) {
1521 MachineInstr *DefMI = I.getOperand().getParent();
1522 if (DefMI->getOpcode() != X86::MOVPC32r)
1524 assert(!isPICBase && "More than one PIC base?");
1531 X86InstrInfo::isReallyTriviallyReMaterializable(const MachineInstr *MI,
1532 AliasAnalysis *AA) const {
1533 switch (MI->getOpcode()) {
1548 case X86::VMOVAPSrm:
1549 case X86::VMOVUPSrm:
1550 case X86::VMOVAPDrm:
1551 case X86::VMOVDQArm:
1552 case X86::VMOVAPSYrm:
1553 case X86::VMOVUPSYrm:
1554 case X86::VMOVAPDYrm:
1555 case X86::VMOVDQAYrm:
1556 case X86::MMX_MOVD64rm:
1557 case X86::MMX_MOVQ64rm:
1558 case X86::FsVMOVAPSrm:
1559 case X86::FsVMOVAPDrm:
1560 case X86::FsMOVAPSrm:
1561 case X86::FsMOVAPDrm: {
1562 // Loads from constant pools are trivially rematerializable.
1563 if (MI->getOperand(1).isReg() &&
1564 MI->getOperand(2).isImm() &&
1565 MI->getOperand(3).isReg() && MI->getOperand(3).getReg() == 0 &&
1566 MI->isInvariantLoad(AA)) {
1567 unsigned BaseReg = MI->getOperand(1).getReg();
1568 if (BaseReg == 0 || BaseReg == X86::RIP)
1570 // Allow re-materialization of PIC load.
1571 if (!ReMatPICStubLoad && MI->getOperand(4).isGlobal())
1573 const MachineFunction &MF = *MI->getParent()->getParent();
1574 const MachineRegisterInfo &MRI = MF.getRegInfo();
1575 return regIsPICBase(BaseReg, MRI);
1582 if (MI->getOperand(2).isImm() &&
1583 MI->getOperand(3).isReg() && MI->getOperand(3).getReg() == 0 &&
1584 !MI->getOperand(4).isReg()) {
1585 // lea fi#, lea GV, etc. are all rematerializable.
1586 if (!MI->getOperand(1).isReg())
1588 unsigned BaseReg = MI->getOperand(1).getReg();
1591 // Allow re-materialization of lea PICBase + x.
1592 const MachineFunction &MF = *MI->getParent()->getParent();
1593 const MachineRegisterInfo &MRI = MF.getRegInfo();
1594 return regIsPICBase(BaseReg, MRI);
1600 // All other instructions marked M_REMATERIALIZABLE are always trivially
1601 // rematerializable.
1605 /// isSafeToClobberEFLAGS - Return true if it's safe insert an instruction that
1606 /// would clobber the EFLAGS condition register. Note the result may be
1607 /// conservative. If it cannot definitely determine the safety after visiting
1608 /// a few instructions in each direction it assumes it's not safe.
1609 static bool isSafeToClobberEFLAGS(MachineBasicBlock &MBB,
1610 MachineBasicBlock::iterator I) {
1611 MachineBasicBlock::iterator E = MBB.end();
1613 // For compile time consideration, if we are not able to determine the
1614 // safety after visiting 4 instructions in each direction, we will assume
1616 MachineBasicBlock::iterator Iter = I;
1617 for (unsigned i = 0; Iter != E && i < 4; ++i) {
1618 bool SeenDef = false;
1619 for (unsigned j = 0, e = Iter->getNumOperands(); j != e; ++j) {
1620 MachineOperand &MO = Iter->getOperand(j);
1621 if (MO.isRegMask() && MO.clobbersPhysReg(X86::EFLAGS))
1625 if (MO.getReg() == X86::EFLAGS) {
1633 // This instruction defines EFLAGS, no need to look any further.
1636 // Skip over DBG_VALUE.
1637 while (Iter != E && Iter->isDebugValue())
1641 // It is safe to clobber EFLAGS at the end of a block of no successor has it
1644 for (MachineBasicBlock::succ_iterator SI = MBB.succ_begin(),
1645 SE = MBB.succ_end(); SI != SE; ++SI)
1646 if ((*SI)->isLiveIn(X86::EFLAGS))
1651 MachineBasicBlock::iterator B = MBB.begin();
1653 for (unsigned i = 0; i < 4; ++i) {
1654 // If we make it to the beginning of the block, it's safe to clobber
1655 // EFLAGS if EFLAGS is not live-in.
1657 return !MBB.isLiveIn(X86::EFLAGS);
1660 // Skip over DBG_VALUE.
1661 while (Iter != B && Iter->isDebugValue())
1664 bool SawKill = false;
1665 for (unsigned j = 0, e = Iter->getNumOperands(); j != e; ++j) {
1666 MachineOperand &MO = Iter->getOperand(j);
1667 // A register mask may clobber EFLAGS, but we should still look for a
1669 if (MO.isRegMask() && MO.clobbersPhysReg(X86::EFLAGS))
1671 if (MO.isReg() && MO.getReg() == X86::EFLAGS) {
1672 if (MO.isDef()) return MO.isDead();
1673 if (MO.isKill()) SawKill = true;
1678 // This instruction kills EFLAGS and doesn't redefine it, so
1679 // there's no need to look further.
1683 // Conservative answer.
1687 void X86InstrInfo::reMaterialize(MachineBasicBlock &MBB,
1688 MachineBasicBlock::iterator I,
1689 unsigned DestReg, unsigned SubIdx,
1690 const MachineInstr *Orig,
1691 const TargetRegisterInfo &TRI) const {
1692 DebugLoc DL = Orig->getDebugLoc();
1694 // MOV32r0 etc. are implemented with xor which clobbers condition code.
1695 // Re-materialize them as movri instructions to avoid side effects.
1697 unsigned Opc = Orig->getOpcode();
1703 case X86::MOV64r0: {
1704 if (!isSafeToClobberEFLAGS(MBB, I)) {
1706 default: llvm_unreachable("Unreachable!");
1707 case X86::MOV8r0: Opc = X86::MOV8ri; break;
1708 case X86::MOV16r0: Opc = X86::MOV16ri; break;
1709 case X86::MOV32r0: Opc = X86::MOV32ri; break;
1710 case X86::MOV64r0: Opc = X86::MOV64ri64i32; break;
1719 MachineInstr *MI = MBB.getParent()->CloneMachineInstr(Orig);
1722 BuildMI(MBB, I, DL, get(Opc)).addOperand(Orig->getOperand(0)).addImm(0);
1725 MachineInstr *NewMI = prior(I);
1726 NewMI->substituteRegister(Orig->getOperand(0).getReg(), DestReg, SubIdx, TRI);
1729 /// hasLiveCondCodeDef - True if MI has a condition code def, e.g. EFLAGS, that
1730 /// is not marked dead.
1731 static bool hasLiveCondCodeDef(MachineInstr *MI) {
1732 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
1733 MachineOperand &MO = MI->getOperand(i);
1734 if (MO.isReg() && MO.isDef() &&
1735 MO.getReg() == X86::EFLAGS && !MO.isDead()) {
1742 /// convertToThreeAddressWithLEA - Helper for convertToThreeAddress when
1743 /// 16-bit LEA is disabled, use 32-bit LEA to form 3-address code by promoting
1744 /// to a 32-bit superregister and then truncating back down to a 16-bit
1747 X86InstrInfo::convertToThreeAddressWithLEA(unsigned MIOpc,
1748 MachineFunction::iterator &MFI,
1749 MachineBasicBlock::iterator &MBBI,
1750 LiveVariables *LV) const {
1751 MachineInstr *MI = MBBI;
1752 unsigned Dest = MI->getOperand(0).getReg();
1753 unsigned Src = MI->getOperand(1).getReg();
1754 bool isDead = MI->getOperand(0).isDead();
1755 bool isKill = MI->getOperand(1).isKill();
1757 unsigned Opc = TM.getSubtarget<X86Subtarget>().is64Bit()
1758 ? X86::LEA64_32r : X86::LEA32r;
1759 MachineRegisterInfo &RegInfo = MFI->getParent()->getRegInfo();
1760 unsigned leaInReg = RegInfo.createVirtualRegister(&X86::GR32_NOSPRegClass);
1761 unsigned leaOutReg = RegInfo.createVirtualRegister(&X86::GR32RegClass);
1763 // Build and insert into an implicit UNDEF value. This is OK because
1764 // well be shifting and then extracting the lower 16-bits.
1765 // This has the potential to cause partial register stall. e.g.
1766 // movw (%rbp,%rcx,2), %dx
1767 // leal -65(%rdx), %esi
1768 // But testing has shown this *does* help performance in 64-bit mode (at
1769 // least on modern x86 machines).
1770 BuildMI(*MFI, MBBI, MI->getDebugLoc(), get(X86::IMPLICIT_DEF), leaInReg);
1771 MachineInstr *InsMI =
1772 BuildMI(*MFI, MBBI, MI->getDebugLoc(), get(TargetOpcode::COPY))
1773 .addReg(leaInReg, RegState::Define, X86::sub_16bit)
1774 .addReg(Src, getKillRegState(isKill));
1776 MachineInstrBuilder MIB = BuildMI(*MFI, MBBI, MI->getDebugLoc(),
1777 get(Opc), leaOutReg);
1779 default: llvm_unreachable("Unreachable!");
1780 case X86::SHL16ri: {
1781 unsigned ShAmt = MI->getOperand(2).getImm();
1782 MIB.addReg(0).addImm(1 << ShAmt)
1783 .addReg(leaInReg, RegState::Kill).addImm(0).addReg(0);
1787 case X86::INC64_16r:
1788 addRegOffset(MIB, leaInReg, true, 1);
1791 case X86::DEC64_16r:
1792 addRegOffset(MIB, leaInReg, true, -1);
1796 case X86::ADD16ri_DB:
1797 case X86::ADD16ri8_DB:
1798 addRegOffset(MIB, leaInReg, true, MI->getOperand(2).getImm());
1801 case X86::ADD16rr_DB: {
1802 unsigned Src2 = MI->getOperand(2).getReg();
1803 bool isKill2 = MI->getOperand(2).isKill();
1804 unsigned leaInReg2 = 0;
1805 MachineInstr *InsMI2 = 0;
1807 // ADD16rr %reg1028<kill>, %reg1028
1808 // just a single insert_subreg.
1809 addRegReg(MIB, leaInReg, true, leaInReg, false);
1811 leaInReg2 = RegInfo.createVirtualRegister(&X86::GR32_NOSPRegClass);
1812 // Build and insert into an implicit UNDEF value. This is OK because
1813 // well be shifting and then extracting the lower 16-bits.
1814 BuildMI(*MFI, &*MIB, MI->getDebugLoc(), get(X86::IMPLICIT_DEF),leaInReg2);
1816 BuildMI(*MFI, &*MIB, MI->getDebugLoc(), get(TargetOpcode::COPY))
1817 .addReg(leaInReg2, RegState::Define, X86::sub_16bit)
1818 .addReg(Src2, getKillRegState(isKill2));
1819 addRegReg(MIB, leaInReg, true, leaInReg2, true);
1821 if (LV && isKill2 && InsMI2)
1822 LV->replaceKillInstruction(Src2, MI, InsMI2);
1827 MachineInstr *NewMI = MIB;
1828 MachineInstr *ExtMI =
1829 BuildMI(*MFI, MBBI, MI->getDebugLoc(), get(TargetOpcode::COPY))
1830 .addReg(Dest, RegState::Define | getDeadRegState(isDead))
1831 .addReg(leaOutReg, RegState::Kill, X86::sub_16bit);
1834 // Update live variables
1835 LV->getVarInfo(leaInReg).Kills.push_back(NewMI);
1836 LV->getVarInfo(leaOutReg).Kills.push_back(ExtMI);
1838 LV->replaceKillInstruction(Src, MI, InsMI);
1840 LV->replaceKillInstruction(Dest, MI, ExtMI);
1846 /// convertToThreeAddress - This method must be implemented by targets that
1847 /// set the M_CONVERTIBLE_TO_3_ADDR flag. When this flag is set, the target
1848 /// may be able to convert a two-address instruction into a true
1849 /// three-address instruction on demand. This allows the X86 target (for
1850 /// example) to convert ADD and SHL instructions into LEA instructions if they
1851 /// would require register copies due to two-addressness.
1853 /// This method returns a null pointer if the transformation cannot be
1854 /// performed, otherwise it returns the new instruction.
1857 X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
1858 MachineBasicBlock::iterator &MBBI,
1859 LiveVariables *LV) const {
1860 MachineInstr *MI = MBBI;
1861 MachineFunction &MF = *MI->getParent()->getParent();
1862 // All instructions input are two-addr instructions. Get the known operands.
1863 const MachineOperand &Dest = MI->getOperand(0);
1864 const MachineOperand &Src = MI->getOperand(1);
1866 MachineInstr *NewMI = NULL;
1867 // FIXME: 16-bit LEA's are really slow on Athlons, but not bad on P4's. When
1868 // we have better subtarget support, enable the 16-bit LEA generation here.
1869 // 16-bit LEA is also slow on Core2.
1870 bool DisableLEA16 = true;
1871 bool is64Bit = TM.getSubtarget<X86Subtarget>().is64Bit();
1873 unsigned MIOpc = MI->getOpcode();
1875 case X86::SHUFPSrri: {
1876 assert(MI->getNumOperands() == 4 && "Unknown shufps instruction!");
1877 if (!TM.getSubtarget<X86Subtarget>().hasSSE2()) return 0;
1879 unsigned B = MI->getOperand(1).getReg();
1880 unsigned C = MI->getOperand(2).getReg();
1881 if (B != C) return 0;
1882 unsigned M = MI->getOperand(3).getImm();
1883 NewMI = BuildMI(MF, MI->getDebugLoc(), get(X86::PSHUFDri))
1884 .addOperand(Dest).addOperand(Src).addImm(M);
1887 case X86::SHUFPDrri: {
1888 assert(MI->getNumOperands() == 4 && "Unknown shufpd instruction!");
1889 if (!TM.getSubtarget<X86Subtarget>().hasSSE2()) return 0;
1891 unsigned B = MI->getOperand(1).getReg();
1892 unsigned C = MI->getOperand(2).getReg();
1893 if (B != C) return 0;
1894 unsigned M = MI->getOperand(3).getImm();
1896 // Convert to PSHUFD mask.
1897 M = ((M & 1) << 1) | ((M & 1) << 3) | ((M & 2) << 4) | ((M & 2) << 6)| 0x44;
1899 NewMI = BuildMI(MF, MI->getDebugLoc(), get(X86::PSHUFDri))
1900 .addOperand(Dest).addOperand(Src).addImm(M);
1903 case X86::SHL64ri: {
1904 assert(MI->getNumOperands() >= 3 && "Unknown shift instruction!");
1905 // NOTE: LEA doesn't produce flags like shift does, but LLVM never uses
1906 // the flags produced by a shift yet, so this is safe.
1907 unsigned ShAmt = MI->getOperand(2).getImm();
1908 if (ShAmt == 0 || ShAmt >= 4) return 0;
1910 // LEA can't handle RSP.
1911 if (TargetRegisterInfo::isVirtualRegister(Src.getReg()) &&
1912 !MF.getRegInfo().constrainRegClass(Src.getReg(),
1913 &X86::GR64_NOSPRegClass))
1916 NewMI = BuildMI(MF, MI->getDebugLoc(), get(X86::LEA64r))
1918 .addReg(0).addImm(1 << ShAmt).addOperand(Src).addImm(0).addReg(0);
1921 case X86::SHL32ri: {
1922 assert(MI->getNumOperands() >= 3 && "Unknown shift instruction!");
1923 // NOTE: LEA doesn't produce flags like shift does, but LLVM never uses
1924 // the flags produced by a shift yet, so this is safe.
1925 unsigned ShAmt = MI->getOperand(2).getImm();
1926 if (ShAmt == 0 || ShAmt >= 4) return 0;
1928 // LEA can't handle ESP.
1929 if (TargetRegisterInfo::isVirtualRegister(Src.getReg()) &&
1930 !MF.getRegInfo().constrainRegClass(Src.getReg(),
1931 &X86::GR32_NOSPRegClass))
1934 unsigned Opc = is64Bit ? X86::LEA64_32r : X86::LEA32r;
1935 NewMI = BuildMI(MF, MI->getDebugLoc(), get(Opc))
1937 .addReg(0).addImm(1 << ShAmt).addOperand(Src).addImm(0).addReg(0);
1940 case X86::SHL16ri: {
1941 assert(MI->getNumOperands() >= 3 && "Unknown shift instruction!");
1942 // NOTE: LEA doesn't produce flags like shift does, but LLVM never uses
1943 // the flags produced by a shift yet, so this is safe.
1944 unsigned ShAmt = MI->getOperand(2).getImm();
1945 if (ShAmt == 0 || ShAmt >= 4) return 0;
1948 return is64Bit ? convertToThreeAddressWithLEA(MIOpc, MFI, MBBI, LV) : 0;
1949 NewMI = BuildMI(MF, MI->getDebugLoc(), get(X86::LEA16r))
1951 .addReg(0).addImm(1 << ShAmt).addOperand(Src).addImm(0).addReg(0);
1955 // The following opcodes also sets the condition code register(s). Only
1956 // convert them to equivalent lea if the condition code register def's
1958 if (hasLiveCondCodeDef(MI))
1965 case X86::INC64_32r: {
1966 assert(MI->getNumOperands() >= 2 && "Unknown inc instruction!");
1967 unsigned Opc = MIOpc == X86::INC64r ? X86::LEA64r
1968 : (is64Bit ? X86::LEA64_32r : X86::LEA32r);
1969 const TargetRegisterClass *RC = MIOpc == X86::INC64r ?
1970 (const TargetRegisterClass*)&X86::GR64_NOSPRegClass :
1971 (const TargetRegisterClass*)&X86::GR32_NOSPRegClass;
1973 // LEA can't handle RSP.
1974 if (TargetRegisterInfo::isVirtualRegister(Src.getReg()) &&
1975 !MF.getRegInfo().constrainRegClass(Src.getReg(), RC))
1978 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(Opc))
1979 .addOperand(Dest).addOperand(Src), 1);
1983 case X86::INC64_16r:
1985 return is64Bit ? convertToThreeAddressWithLEA(MIOpc, MFI, MBBI, LV) : 0;
1986 assert(MI->getNumOperands() >= 2 && "Unknown inc instruction!");
1987 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(X86::LEA16r))
1988 .addOperand(Dest).addOperand(Src), 1);
1992 case X86::DEC64_32r: {
1993 assert(MI->getNumOperands() >= 2 && "Unknown dec instruction!");
1994 unsigned Opc = MIOpc == X86::DEC64r ? X86::LEA64r
1995 : (is64Bit ? X86::LEA64_32r : X86::LEA32r);
1996 const TargetRegisterClass *RC = MIOpc == X86::DEC64r ?
1997 (const TargetRegisterClass*)&X86::GR64_NOSPRegClass :
1998 (const TargetRegisterClass*)&X86::GR32_NOSPRegClass;
1999 // LEA can't handle RSP.
2000 if (TargetRegisterInfo::isVirtualRegister(Src.getReg()) &&
2001 !MF.getRegInfo().constrainRegClass(Src.getReg(), RC))
2004 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(Opc))
2005 .addOperand(Dest).addOperand(Src), -1);
2009 case X86::DEC64_16r:
2011 return is64Bit ? convertToThreeAddressWithLEA(MIOpc, MFI, MBBI, LV) : 0;
2012 assert(MI->getNumOperands() >= 2 && "Unknown dec instruction!");
2013 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(X86::LEA16r))
2014 .addOperand(Dest).addOperand(Src), -1);
2017 case X86::ADD64rr_DB:
2019 case X86::ADD32rr_DB: {
2020 assert(MI->getNumOperands() >= 3 && "Unknown add instruction!");
2022 const TargetRegisterClass *RC;
2023 if (MIOpc == X86::ADD64rr || MIOpc == X86::ADD64rr_DB) {
2025 RC = &X86::GR64_NOSPRegClass;
2027 Opc = is64Bit ? X86::LEA64_32r : X86::LEA32r;
2028 RC = &X86::GR32_NOSPRegClass;
2032 unsigned Src2 = MI->getOperand(2).getReg();
2033 bool isKill2 = MI->getOperand(2).isKill();
2035 // LEA can't handle RSP.
2036 if (TargetRegisterInfo::isVirtualRegister(Src2) &&
2037 !MF.getRegInfo().constrainRegClass(Src2, RC))
2040 NewMI = addRegReg(BuildMI(MF, MI->getDebugLoc(), get(Opc))
2042 Src.getReg(), Src.isKill(), Src2, isKill2);
2044 // Preserve undefness of the operands.
2045 bool isUndef = MI->getOperand(1).isUndef();
2046 bool isUndef2 = MI->getOperand(2).isUndef();
2047 NewMI->getOperand(1).setIsUndef(isUndef);
2048 NewMI->getOperand(3).setIsUndef(isUndef2);
2051 LV->replaceKillInstruction(Src2, MI, NewMI);
2055 case X86::ADD16rr_DB: {
2057 return is64Bit ? convertToThreeAddressWithLEA(MIOpc, MFI, MBBI, LV) : 0;
2058 assert(MI->getNumOperands() >= 3 && "Unknown add instruction!");
2059 unsigned Src2 = MI->getOperand(2).getReg();
2060 bool isKill2 = MI->getOperand(2).isKill();
2061 NewMI = addRegReg(BuildMI(MF, MI->getDebugLoc(), get(X86::LEA16r))
2063 Src.getReg(), Src.isKill(), Src2, isKill2);
2065 // Preserve undefness of the operands.
2066 bool isUndef = MI->getOperand(1).isUndef();
2067 bool isUndef2 = MI->getOperand(2).isUndef();
2068 NewMI->getOperand(1).setIsUndef(isUndef);
2069 NewMI->getOperand(3).setIsUndef(isUndef2);
2072 LV->replaceKillInstruction(Src2, MI, NewMI);
2075 case X86::ADD64ri32:
2077 case X86::ADD64ri32_DB:
2078 case X86::ADD64ri8_DB:
2079 assert(MI->getNumOperands() >= 3 && "Unknown add instruction!");
2080 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(X86::LEA64r))
2081 .addOperand(Dest).addOperand(Src),
2082 MI->getOperand(2).getImm());
2086 case X86::ADD32ri_DB:
2087 case X86::ADD32ri8_DB: {
2088 assert(MI->getNumOperands() >= 3 && "Unknown add instruction!");
2089 unsigned Opc = is64Bit ? X86::LEA64_32r : X86::LEA32r;
2090 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(Opc))
2091 .addOperand(Dest).addOperand(Src),
2092 MI->getOperand(2).getImm());
2097 case X86::ADD16ri_DB:
2098 case X86::ADD16ri8_DB:
2100 return is64Bit ? convertToThreeAddressWithLEA(MIOpc, MFI, MBBI, LV) : 0;
2101 assert(MI->getNumOperands() >= 3 && "Unknown add instruction!");
2102 NewMI = addOffset(BuildMI(MF, MI->getDebugLoc(), get(X86::LEA16r))
2103 .addOperand(Dest).addOperand(Src),
2104 MI->getOperand(2).getImm());
2110 if (!NewMI) return 0;
2112 if (LV) { // Update live variables
2114 LV->replaceKillInstruction(Src.getReg(), MI, NewMI);
2116 LV->replaceKillInstruction(Dest.getReg(), MI, NewMI);
2119 MFI->insert(MBBI, NewMI); // Insert the new inst
2123 /// commuteInstruction - We have a few instructions that must be hacked on to
2127 X86InstrInfo::commuteInstruction(MachineInstr *MI, bool NewMI) const {
2128 switch (MI->getOpcode()) {
2129 case X86::SHRD16rri8: // A = SHRD16rri8 B, C, I -> A = SHLD16rri8 C, B, (16-I)
2130 case X86::SHLD16rri8: // A = SHLD16rri8 B, C, I -> A = SHRD16rri8 C, B, (16-I)
2131 case X86::SHRD32rri8: // A = SHRD32rri8 B, C, I -> A = SHLD32rri8 C, B, (32-I)
2132 case X86::SHLD32rri8: // A = SHLD32rri8 B, C, I -> A = SHRD32rri8 C, B, (32-I)
2133 case X86::SHRD64rri8: // A = SHRD64rri8 B, C, I -> A = SHLD64rri8 C, B, (64-I)
2134 case X86::SHLD64rri8:{// A = SHLD64rri8 B, C, I -> A = SHRD64rri8 C, B, (64-I)
2137 switch (MI->getOpcode()) {
2138 default: llvm_unreachable("Unreachable!");
2139 case X86::SHRD16rri8: Size = 16; Opc = X86::SHLD16rri8; break;
2140 case X86::SHLD16rri8: Size = 16; Opc = X86::SHRD16rri8; break;
2141 case X86::SHRD32rri8: Size = 32; Opc = X86::SHLD32rri8; break;
2142 case X86::SHLD32rri8: Size = 32; Opc = X86::SHRD32rri8; break;
2143 case X86::SHRD64rri8: Size = 64; Opc = X86::SHLD64rri8; break;
2144 case X86::SHLD64rri8: Size = 64; Opc = X86::SHRD64rri8; break;
2146 unsigned Amt = MI->getOperand(3).getImm();
2148 MachineFunction &MF = *MI->getParent()->getParent();
2149 MI = MF.CloneMachineInstr(MI);
2152 MI->setDesc(get(Opc));
2153 MI->getOperand(3).setImm(Size-Amt);
2154 return TargetInstrInfoImpl::commuteInstruction(MI, NewMI);
2156 case X86::CMOVB16rr: case X86::CMOVB32rr: case X86::CMOVB64rr:
2157 case X86::CMOVAE16rr: case X86::CMOVAE32rr: case X86::CMOVAE64rr:
2158 case X86::CMOVE16rr: case X86::CMOVE32rr: case X86::CMOVE64rr:
2159 case X86::CMOVNE16rr: case X86::CMOVNE32rr: case X86::CMOVNE64rr:
2160 case X86::CMOVBE16rr: case X86::CMOVBE32rr: case X86::CMOVBE64rr:
2161 case X86::CMOVA16rr: case X86::CMOVA32rr: case X86::CMOVA64rr:
2162 case X86::CMOVL16rr: case X86::CMOVL32rr: case X86::CMOVL64rr:
2163 case X86::CMOVGE16rr: case X86::CMOVGE32rr: case X86::CMOVGE64rr:
2164 case X86::CMOVLE16rr: case X86::CMOVLE32rr: case X86::CMOVLE64rr:
2165 case X86::CMOVG16rr: case X86::CMOVG32rr: case X86::CMOVG64rr:
2166 case X86::CMOVS16rr: case X86::CMOVS32rr: case X86::CMOVS64rr:
2167 case X86::CMOVNS16rr: case X86::CMOVNS32rr: case X86::CMOVNS64rr:
2168 case X86::CMOVP16rr: case X86::CMOVP32rr: case X86::CMOVP64rr:
2169 case X86::CMOVNP16rr: case X86::CMOVNP32rr: case X86::CMOVNP64rr:
2170 case X86::CMOVO16rr: case X86::CMOVO32rr: case X86::CMOVO64rr:
2171 case X86::CMOVNO16rr: case X86::CMOVNO32rr: case X86::CMOVNO64rr: {
2173 switch (MI->getOpcode()) {
2174 default: llvm_unreachable("Unreachable!");
2175 case X86::CMOVB16rr: Opc = X86::CMOVAE16rr; break;
2176 case X86::CMOVB32rr: Opc = X86::CMOVAE32rr; break;
2177 case X86::CMOVB64rr: Opc = X86::CMOVAE64rr; break;
2178 case X86::CMOVAE16rr: Opc = X86::CMOVB16rr; break;
2179 case X86::CMOVAE32rr: Opc = X86::CMOVB32rr; break;
2180 case X86::CMOVAE64rr: Opc = X86::CMOVB64rr; break;
2181 case X86::CMOVE16rr: Opc = X86::CMOVNE16rr; break;
2182 case X86::CMOVE32rr: Opc = X86::CMOVNE32rr; break;
2183 case X86::CMOVE64rr: Opc = X86::CMOVNE64rr; break;
2184 case X86::CMOVNE16rr: Opc = X86::CMOVE16rr; break;
2185 case X86::CMOVNE32rr: Opc = X86::CMOVE32rr; break;
2186 case X86::CMOVNE64rr: Opc = X86::CMOVE64rr; break;
2187 case X86::CMOVBE16rr: Opc = X86::CMOVA16rr; break;
2188 case X86::CMOVBE32rr: Opc = X86::CMOVA32rr; break;
2189 case X86::CMOVBE64rr: Opc = X86::CMOVA64rr; break;
2190 case X86::CMOVA16rr: Opc = X86::CMOVBE16rr; break;
2191 case X86::CMOVA32rr: Opc = X86::CMOVBE32rr; break;
2192 case X86::CMOVA64rr: Opc = X86::CMOVBE64rr; break;
2193 case X86::CMOVL16rr: Opc = X86::CMOVGE16rr; break;
2194 case X86::CMOVL32rr: Opc = X86::CMOVGE32rr; break;
2195 case X86::CMOVL64rr: Opc = X86::CMOVGE64rr; break;
2196 case X86::CMOVGE16rr: Opc = X86::CMOVL16rr; break;
2197 case X86::CMOVGE32rr: Opc = X86::CMOVL32rr; break;
2198 case X86::CMOVGE64rr: Opc = X86::CMOVL64rr; break;
2199 case X86::CMOVLE16rr: Opc = X86::CMOVG16rr; break;
2200 case X86::CMOVLE32rr: Opc = X86::CMOVG32rr; break;
2201 case X86::CMOVLE64rr: Opc = X86::CMOVG64rr; break;
2202 case X86::CMOVG16rr: Opc = X86::CMOVLE16rr; break;
2203 case X86::CMOVG32rr: Opc = X86::CMOVLE32rr; break;
2204 case X86::CMOVG64rr: Opc = X86::CMOVLE64rr; break;
2205 case X86::CMOVS16rr: Opc = X86::CMOVNS16rr; break;
2206 case X86::CMOVS32rr: Opc = X86::CMOVNS32rr; break;
2207 case X86::CMOVS64rr: Opc = X86::CMOVNS64rr; break;
2208 case X86::CMOVNS16rr: Opc = X86::CMOVS16rr; break;
2209 case X86::CMOVNS32rr: Opc = X86::CMOVS32rr; break;
2210 case X86::CMOVNS64rr: Opc = X86::CMOVS64rr; break;
2211 case X86::CMOVP16rr: Opc = X86::CMOVNP16rr; break;
2212 case X86::CMOVP32rr: Opc = X86::CMOVNP32rr; break;
2213 case X86::CMOVP64rr: Opc = X86::CMOVNP64rr; break;
2214 case X86::CMOVNP16rr: Opc = X86::CMOVP16rr; break;
2215 case X86::CMOVNP32rr: Opc = X86::CMOVP32rr; break;
2216 case X86::CMOVNP64rr: Opc = X86::CMOVP64rr; break;
2217 case X86::CMOVO16rr: Opc = X86::CMOVNO16rr; break;
2218 case X86::CMOVO32rr: Opc = X86::CMOVNO32rr; break;
2219 case X86::CMOVO64rr: Opc = X86::CMOVNO64rr; break;
2220 case X86::CMOVNO16rr: Opc = X86::CMOVO16rr; break;
2221 case X86::CMOVNO32rr: Opc = X86::CMOVO32rr; break;
2222 case X86::CMOVNO64rr: Opc = X86::CMOVO64rr; break;
2225 MachineFunction &MF = *MI->getParent()->getParent();
2226 MI = MF.CloneMachineInstr(MI);
2229 MI->setDesc(get(Opc));
2230 // Fallthrough intended.
2233 return TargetInstrInfoImpl::commuteInstruction(MI, NewMI);
2237 static X86::CondCode getCondFromBranchOpc(unsigned BrOpc) {
2239 default: return X86::COND_INVALID;
2240 case X86::JE_4: return X86::COND_E;
2241 case X86::JNE_4: return X86::COND_NE;
2242 case X86::JL_4: return X86::COND_L;
2243 case X86::JLE_4: return X86::COND_LE;
2244 case X86::JG_4: return X86::COND_G;
2245 case X86::JGE_4: return X86::COND_GE;
2246 case X86::JB_4: return X86::COND_B;
2247 case X86::JBE_4: return X86::COND_BE;
2248 case X86::JA_4: return X86::COND_A;
2249 case X86::JAE_4: return X86::COND_AE;
2250 case X86::JS_4: return X86::COND_S;
2251 case X86::JNS_4: return X86::COND_NS;
2252 case X86::JP_4: return X86::COND_P;
2253 case X86::JNP_4: return X86::COND_NP;
2254 case X86::JO_4: return X86::COND_O;
2255 case X86::JNO_4: return X86::COND_NO;
2259 /// getCondFromSETOpc - return condition code of a SET opcode.
2260 static X86::CondCode getCondFromSETOpc(unsigned Opc) {
2262 default: return X86::COND_INVALID;
2263 case X86::SETAr: case X86::SETAm: return X86::COND_A;
2264 case X86::SETAEr: case X86::SETAEm: return X86::COND_AE;
2265 case X86::SETBr: case X86::SETBm: return X86::COND_B;
2266 case X86::SETBEr: case X86::SETBEm: return X86::COND_BE;
2267 case X86::SETEr: case X86::SETEm: return X86::COND_E;
2268 case X86::SETGr: case X86::SETGm: return X86::COND_G;
2269 case X86::SETGEr: case X86::SETGEm: return X86::COND_GE;
2270 case X86::SETLr: case X86::SETLm: return X86::COND_L;
2271 case X86::SETLEr: case X86::SETLEm: return X86::COND_LE;
2272 case X86::SETNEr: case X86::SETNEm: return X86::COND_NE;
2273 case X86::SETNOr: case X86::SETNOm: return X86::COND_NO;
2274 case X86::SETNPr: case X86::SETNPm: return X86::COND_NP;
2275 case X86::SETNSr: case X86::SETNSm: return X86::COND_NS;
2276 case X86::SETOr: case X86::SETOm: return X86::COND_O;
2277 case X86::SETPr: case X86::SETPm: return X86::COND_P;
2278 case X86::SETSr: case X86::SETSm: return X86::COND_S;
2282 /// getCondFromCmovOpc - return condition code of a CMov opcode.
2283 X86::CondCode X86::getCondFromCMovOpc(unsigned Opc) {
2285 default: return X86::COND_INVALID;
2286 case X86::CMOVA16rm: case X86::CMOVA16rr: case X86::CMOVA32rm:
2287 case X86::CMOVA32rr: case X86::CMOVA64rm: case X86::CMOVA64rr:
2289 case X86::CMOVAE16rm: case X86::CMOVAE16rr: case X86::CMOVAE32rm:
2290 case X86::CMOVAE32rr: case X86::CMOVAE64rm: case X86::CMOVAE64rr:
2291 return X86::COND_AE;
2292 case X86::CMOVB16rm: case X86::CMOVB16rr: case X86::CMOVB32rm:
2293 case X86::CMOVB32rr: case X86::CMOVB64rm: case X86::CMOVB64rr:
2295 case X86::CMOVBE16rm: case X86::CMOVBE16rr: case X86::CMOVBE32rm:
2296 case X86::CMOVBE32rr: case X86::CMOVBE64rm: case X86::CMOVBE64rr:
2297 return X86::COND_BE;
2298 case X86::CMOVE16rm: case X86::CMOVE16rr: case X86::CMOVE32rm:
2299 case X86::CMOVE32rr: case X86::CMOVE64rm: case X86::CMOVE64rr:
2301 case X86::CMOVG16rm: case X86::CMOVG16rr: case X86::CMOVG32rm:
2302 case X86::CMOVG32rr: case X86::CMOVG64rm: case X86::CMOVG64rr:
2304 case X86::CMOVGE16rm: case X86::CMOVGE16rr: case X86::CMOVGE32rm:
2305 case X86::CMOVGE32rr: case X86::CMOVGE64rm: case X86::CMOVGE64rr:
2306 return X86::COND_GE;
2307 case X86::CMOVL16rm: case X86::CMOVL16rr: case X86::CMOVL32rm:
2308 case X86::CMOVL32rr: case X86::CMOVL64rm: case X86::CMOVL64rr:
2310 case X86::CMOVLE16rm: case X86::CMOVLE16rr: case X86::CMOVLE32rm:
2311 case X86::CMOVLE32rr: case X86::CMOVLE64rm: case X86::CMOVLE64rr:
2312 return X86::COND_LE;
2313 case X86::CMOVNE16rm: case X86::CMOVNE16rr: case X86::CMOVNE32rm:
2314 case X86::CMOVNE32rr: case X86::CMOVNE64rm: case X86::CMOVNE64rr:
2315 return X86::COND_NE;
2316 case X86::CMOVNO16rm: case X86::CMOVNO16rr: case X86::CMOVNO32rm:
2317 case X86::CMOVNO32rr: case X86::CMOVNO64rm: case X86::CMOVNO64rr:
2318 return X86::COND_NO;
2319 case X86::CMOVNP16rm: case X86::CMOVNP16rr: case X86::CMOVNP32rm:
2320 case X86::CMOVNP32rr: case X86::CMOVNP64rm: case X86::CMOVNP64rr:
2321 return X86::COND_NP;
2322 case X86::CMOVNS16rm: case X86::CMOVNS16rr: case X86::CMOVNS32rm:
2323 case X86::CMOVNS32rr: case X86::CMOVNS64rm: case X86::CMOVNS64rr:
2324 return X86::COND_NS;
2325 case X86::CMOVO16rm: case X86::CMOVO16rr: case X86::CMOVO32rm:
2326 case X86::CMOVO32rr: case X86::CMOVO64rm: case X86::CMOVO64rr:
2328 case X86::CMOVP16rm: case X86::CMOVP16rr: case X86::CMOVP32rm:
2329 case X86::CMOVP32rr: case X86::CMOVP64rm: case X86::CMOVP64rr:
2331 case X86::CMOVS16rm: case X86::CMOVS16rr: case X86::CMOVS32rm:
2332 case X86::CMOVS32rr: case X86::CMOVS64rm: case X86::CMOVS64rr:
2337 unsigned X86::GetCondBranchFromCond(X86::CondCode CC) {
2339 default: llvm_unreachable("Illegal condition code!");
2340 case X86::COND_E: return X86::JE_4;
2341 case X86::COND_NE: return X86::JNE_4;
2342 case X86::COND_L: return X86::JL_4;
2343 case X86::COND_LE: return X86::JLE_4;
2344 case X86::COND_G: return X86::JG_4;
2345 case X86::COND_GE: return X86::JGE_4;
2346 case X86::COND_B: return X86::JB_4;
2347 case X86::COND_BE: return X86::JBE_4;
2348 case X86::COND_A: return X86::JA_4;
2349 case X86::COND_AE: return X86::JAE_4;
2350 case X86::COND_S: return X86::JS_4;
2351 case X86::COND_NS: return X86::JNS_4;
2352 case X86::COND_P: return X86::JP_4;
2353 case X86::COND_NP: return X86::JNP_4;
2354 case X86::COND_O: return X86::JO_4;
2355 case X86::COND_NO: return X86::JNO_4;
2359 /// GetOppositeBranchCondition - Return the inverse of the specified condition,
2360 /// e.g. turning COND_E to COND_NE.
2361 X86::CondCode X86::GetOppositeBranchCondition(X86::CondCode CC) {
2363 default: llvm_unreachable("Illegal condition code!");
2364 case X86::COND_E: return X86::COND_NE;
2365 case X86::COND_NE: return X86::COND_E;
2366 case X86::COND_L: return X86::COND_GE;
2367 case X86::COND_LE: return X86::COND_G;
2368 case X86::COND_G: return X86::COND_LE;
2369 case X86::COND_GE: return X86::COND_L;
2370 case X86::COND_B: return X86::COND_AE;
2371 case X86::COND_BE: return X86::COND_A;
2372 case X86::COND_A: return X86::COND_BE;
2373 case X86::COND_AE: return X86::COND_B;
2374 case X86::COND_S: return X86::COND_NS;
2375 case X86::COND_NS: return X86::COND_S;
2376 case X86::COND_P: return X86::COND_NP;
2377 case X86::COND_NP: return X86::COND_P;
2378 case X86::COND_O: return X86::COND_NO;
2379 case X86::COND_NO: return X86::COND_O;
2383 /// getSwappedCondition - assume the flags are set by MI(a,b), return
2384 /// the condition code if we modify the instructions such that flags are
2386 static X86::CondCode getSwappedCondition(X86::CondCode CC) {
2388 default: return X86::COND_INVALID;
2389 case X86::COND_E: return X86::COND_E;
2390 case X86::COND_NE: return X86::COND_NE;
2391 case X86::COND_L: return X86::COND_G;
2392 case X86::COND_LE: return X86::COND_GE;
2393 case X86::COND_G: return X86::COND_L;
2394 case X86::COND_GE: return X86::COND_LE;
2395 case X86::COND_B: return X86::COND_A;
2396 case X86::COND_BE: return X86::COND_AE;
2397 case X86::COND_A: return X86::COND_B;
2398 case X86::COND_AE: return X86::COND_BE;
2402 /// getSETFromCond - Return a set opcode for the given condition and
2403 /// whether it has memory operand.
2404 static unsigned getSETFromCond(X86::CondCode CC,
2405 bool HasMemoryOperand) {
2406 static const uint16_t Opc[16][2] = {
2407 { X86::SETAr, X86::SETAm },
2408 { X86::SETAEr, X86::SETAEm },
2409 { X86::SETBr, X86::SETBm },
2410 { X86::SETBEr, X86::SETBEm },
2411 { X86::SETEr, X86::SETEm },
2412 { X86::SETGr, X86::SETGm },
2413 { X86::SETGEr, X86::SETGEm },
2414 { X86::SETLr, X86::SETLm },
2415 { X86::SETLEr, X86::SETLEm },
2416 { X86::SETNEr, X86::SETNEm },
2417 { X86::SETNOr, X86::SETNOm },
2418 { X86::SETNPr, X86::SETNPm },
2419 { X86::SETNSr, X86::SETNSm },
2420 { X86::SETOr, X86::SETOm },
2421 { X86::SETPr, X86::SETPm },
2422 { X86::SETSr, X86::SETSm }
2425 assert(CC < 16 && "Can only handle standard cond codes");
2426 return Opc[CC][HasMemoryOperand ? 1 : 0];
2429 /// getCMovFromCond - Return a cmov opcode for the given condition,
2430 /// register size in bytes, and operand type.
2431 static unsigned getCMovFromCond(X86::CondCode CC, unsigned RegBytes,
2432 bool HasMemoryOperand) {
2433 static const uint16_t Opc[32][3] = {
2434 { X86::CMOVA16rr, X86::CMOVA32rr, X86::CMOVA64rr },
2435 { X86::CMOVAE16rr, X86::CMOVAE32rr, X86::CMOVAE64rr },
2436 { X86::CMOVB16rr, X86::CMOVB32rr, X86::CMOVB64rr },
2437 { X86::CMOVBE16rr, X86::CMOVBE32rr, X86::CMOVBE64rr },
2438 { X86::CMOVE16rr, X86::CMOVE32rr, X86::CMOVE64rr },
2439 { X86::CMOVG16rr, X86::CMOVG32rr, X86::CMOVG64rr },
2440 { X86::CMOVGE16rr, X86::CMOVGE32rr, X86::CMOVGE64rr },
2441 { X86::CMOVL16rr, X86::CMOVL32rr, X86::CMOVL64rr },
2442 { X86::CMOVLE16rr, X86::CMOVLE32rr, X86::CMOVLE64rr },
2443 { X86::CMOVNE16rr, X86::CMOVNE32rr, X86::CMOVNE64rr },
2444 { X86::CMOVNO16rr, X86::CMOVNO32rr, X86::CMOVNO64rr },
2445 { X86::CMOVNP16rr, X86::CMOVNP32rr, X86::CMOVNP64rr },
2446 { X86::CMOVNS16rr, X86::CMOVNS32rr, X86::CMOVNS64rr },
2447 { X86::CMOVO16rr, X86::CMOVO32rr, X86::CMOVO64rr },
2448 { X86::CMOVP16rr, X86::CMOVP32rr, X86::CMOVP64rr },
2449 { X86::CMOVS16rr, X86::CMOVS32rr, X86::CMOVS64rr },
2450 { X86::CMOVA16rm, X86::CMOVA32rm, X86::CMOVA64rm },
2451 { X86::CMOVAE16rm, X86::CMOVAE32rm, X86::CMOVAE64rm },
2452 { X86::CMOVB16rm, X86::CMOVB32rm, X86::CMOVB64rm },
2453 { X86::CMOVBE16rm, X86::CMOVBE32rm, X86::CMOVBE64rm },
2454 { X86::CMOVE16rm, X86::CMOVE32rm, X86::CMOVE64rm },
2455 { X86::CMOVG16rm, X86::CMOVG32rm, X86::CMOVG64rm },
2456 { X86::CMOVGE16rm, X86::CMOVGE32rm, X86::CMOVGE64rm },
2457 { X86::CMOVL16rm, X86::CMOVL32rm, X86::CMOVL64rm },
2458 { X86::CMOVLE16rm, X86::CMOVLE32rm, X86::CMOVLE64rm },
2459 { X86::CMOVNE16rm, X86::CMOVNE32rm, X86::CMOVNE64rm },
2460 { X86::CMOVNO16rm, X86::CMOVNO32rm, X86::CMOVNO64rm },
2461 { X86::CMOVNP16rm, X86::CMOVNP32rm, X86::CMOVNP64rm },
2462 { X86::CMOVNS16rm, X86::CMOVNS32rm, X86::CMOVNS64rm },
2463 { X86::CMOVO16rm, X86::CMOVO32rm, X86::CMOVO64rm },
2464 { X86::CMOVP16rm, X86::CMOVP32rm, X86::CMOVP64rm },
2465 { X86::CMOVS16rm, X86::CMOVS32rm, X86::CMOVS64rm }
2468 assert(CC < 16 && "Can only handle standard cond codes");
2469 unsigned Idx = HasMemoryOperand ? 16+CC : CC;
2471 default: llvm_unreachable("Illegal register size!");
2472 case 2: return Opc[Idx][0];
2473 case 4: return Opc[Idx][1];
2474 case 8: return Opc[Idx][2];
2478 bool X86InstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
2479 if (!MI->isTerminator()) return false;
2481 // Conditional branch is a special case.
2482 if (MI->isBranch() && !MI->isBarrier())
2484 if (!MI->isPredicable())
2486 return !isPredicated(MI);
2489 bool X86InstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
2490 MachineBasicBlock *&TBB,
2491 MachineBasicBlock *&FBB,
2492 SmallVectorImpl<MachineOperand> &Cond,
2493 bool AllowModify) const {
2494 // Start from the bottom of the block and work up, examining the
2495 // terminator instructions.
2496 MachineBasicBlock::iterator I = MBB.end();
2497 MachineBasicBlock::iterator UnCondBrIter = MBB.end();
2498 while (I != MBB.begin()) {
2500 if (I->isDebugValue())
2503 // Working from the bottom, when we see a non-terminator instruction, we're
2505 if (!isUnpredicatedTerminator(I))
2508 // A terminator that isn't a branch can't easily be handled by this
2513 // Handle unconditional branches.
2514 if (I->getOpcode() == X86::JMP_4) {
2518 TBB = I->getOperand(0).getMBB();
2522 // If the block has any instructions after a JMP, delete them.
2523 while (llvm::next(I) != MBB.end())
2524 llvm::next(I)->eraseFromParent();
2529 // Delete the JMP if it's equivalent to a fall-through.
2530 if (MBB.isLayoutSuccessor(I->getOperand(0).getMBB())) {
2532 I->eraseFromParent();
2534 UnCondBrIter = MBB.end();
2538 // TBB is used to indicate the unconditional destination.
2539 TBB = I->getOperand(0).getMBB();
2543 // Handle conditional branches.
2544 X86::CondCode BranchCode = getCondFromBranchOpc(I->getOpcode());
2545 if (BranchCode == X86::COND_INVALID)
2546 return true; // Can't handle indirect branch.
2548 // Working from the bottom, handle the first conditional branch.
2550 MachineBasicBlock *TargetBB = I->getOperand(0).getMBB();
2551 if (AllowModify && UnCondBrIter != MBB.end() &&
2552 MBB.isLayoutSuccessor(TargetBB)) {
2553 // If we can modify the code and it ends in something like:
2561 // Then we can change this to:
2568 // Which is a bit more efficient.
2569 // We conditionally jump to the fall-through block.
2570 BranchCode = GetOppositeBranchCondition(BranchCode);
2571 unsigned JNCC = GetCondBranchFromCond(BranchCode);
2572 MachineBasicBlock::iterator OldInst = I;
2574 BuildMI(MBB, UnCondBrIter, MBB.findDebugLoc(I), get(JNCC))
2575 .addMBB(UnCondBrIter->getOperand(0).getMBB());
2576 BuildMI(MBB, UnCondBrIter, MBB.findDebugLoc(I), get(X86::JMP_4))
2579 OldInst->eraseFromParent();
2580 UnCondBrIter->eraseFromParent();
2582 // Restart the analysis.
2583 UnCondBrIter = MBB.end();
2589 TBB = I->getOperand(0).getMBB();
2590 Cond.push_back(MachineOperand::CreateImm(BranchCode));
2594 // Handle subsequent conditional branches. Only handle the case where all
2595 // conditional branches branch to the same destination and their condition
2596 // opcodes fit one of the special multi-branch idioms.
2597 assert(Cond.size() == 1);
2600 // Only handle the case where all conditional branches branch to the same
2602 if (TBB != I->getOperand(0).getMBB())
2605 // If the conditions are the same, we can leave them alone.
2606 X86::CondCode OldBranchCode = (X86::CondCode)Cond[0].getImm();
2607 if (OldBranchCode == BranchCode)
2610 // If they differ, see if they fit one of the known patterns. Theoretically,
2611 // we could handle more patterns here, but we shouldn't expect to see them
2612 // if instruction selection has done a reasonable job.
2613 if ((OldBranchCode == X86::COND_NP &&
2614 BranchCode == X86::COND_E) ||
2615 (OldBranchCode == X86::COND_E &&
2616 BranchCode == X86::COND_NP))
2617 BranchCode = X86::COND_NP_OR_E;
2618 else if ((OldBranchCode == X86::COND_P &&
2619 BranchCode == X86::COND_NE) ||
2620 (OldBranchCode == X86::COND_NE &&
2621 BranchCode == X86::COND_P))
2622 BranchCode = X86::COND_NE_OR_P;
2626 // Update the MachineOperand.
2627 Cond[0].setImm(BranchCode);
2633 unsigned X86InstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
2634 MachineBasicBlock::iterator I = MBB.end();
2637 while (I != MBB.begin()) {
2639 if (I->isDebugValue())
2641 if (I->getOpcode() != X86::JMP_4 &&
2642 getCondFromBranchOpc(I->getOpcode()) == X86::COND_INVALID)
2644 // Remove the branch.
2645 I->eraseFromParent();
2654 X86InstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
2655 MachineBasicBlock *FBB,
2656 const SmallVectorImpl<MachineOperand> &Cond,
2657 DebugLoc DL) const {
2658 // Shouldn't be a fall through.
2659 assert(TBB && "InsertBranch must not be told to insert a fallthrough");
2660 assert((Cond.size() == 1 || Cond.size() == 0) &&
2661 "X86 branch conditions have one component!");
2664 // Unconditional branch?
2665 assert(!FBB && "Unconditional branch with multiple successors!");
2666 BuildMI(&MBB, DL, get(X86::JMP_4)).addMBB(TBB);
2670 // Conditional branch.
2672 X86::CondCode CC = (X86::CondCode)Cond[0].getImm();
2674 case X86::COND_NP_OR_E:
2675 // Synthesize NP_OR_E with two branches.
2676 BuildMI(&MBB, DL, get(X86::JNP_4)).addMBB(TBB);
2678 BuildMI(&MBB, DL, get(X86::JE_4)).addMBB(TBB);
2681 case X86::COND_NE_OR_P:
2682 // Synthesize NE_OR_P with two branches.
2683 BuildMI(&MBB, DL, get(X86::JNE_4)).addMBB(TBB);
2685 BuildMI(&MBB, DL, get(X86::JP_4)).addMBB(TBB);
2689 unsigned Opc = GetCondBranchFromCond(CC);
2690 BuildMI(&MBB, DL, get(Opc)).addMBB(TBB);
2695 // Two-way Conditional branch. Insert the second branch.
2696 BuildMI(&MBB, DL, get(X86::JMP_4)).addMBB(FBB);
2703 canInsertSelect(const MachineBasicBlock &MBB,
2704 const SmallVectorImpl<MachineOperand> &Cond,
2705 unsigned TrueReg, unsigned FalseReg,
2706 int &CondCycles, int &TrueCycles, int &FalseCycles) const {
2707 // Not all subtargets have cmov instructions.
2708 if (!TM.getSubtarget<X86Subtarget>().hasCMov())
2710 if (Cond.size() != 1)
2712 // We cannot do the composite conditions, at least not in SSA form.
2713 if ((X86::CondCode)Cond[0].getImm() > X86::COND_S)
2716 // Check register classes.
2717 const MachineRegisterInfo &MRI = MBB.getParent()->getRegInfo();
2718 const TargetRegisterClass *RC =
2719 RI.getCommonSubClass(MRI.getRegClass(TrueReg), MRI.getRegClass(FalseReg));
2723 // We have cmov instructions for 16, 32, and 64 bit general purpose registers.
2724 if (X86::GR16RegClass.hasSubClassEq(RC) ||
2725 X86::GR32RegClass.hasSubClassEq(RC) ||
2726 X86::GR64RegClass.hasSubClassEq(RC)) {
2727 // This latency applies to Pentium M, Merom, Wolfdale, Nehalem, and Sandy
2728 // Bridge. Probably Ivy Bridge as well.
2735 // Can't do vectors.
2739 void X86InstrInfo::insertSelect(MachineBasicBlock &MBB,
2740 MachineBasicBlock::iterator I, DebugLoc DL,
2742 const SmallVectorImpl<MachineOperand> &Cond,
2743 unsigned TrueReg, unsigned FalseReg) const {
2744 MachineRegisterInfo &MRI = MBB.getParent()->getRegInfo();
2745 assert(Cond.size() == 1 && "Invalid Cond array");
2746 unsigned Opc = getCMovFromCond((X86::CondCode)Cond[0].getImm(),
2747 MRI.getRegClass(DstReg)->getSize(),
2748 false/*HasMemoryOperand*/);
2749 BuildMI(MBB, I, DL, get(Opc), DstReg).addReg(FalseReg).addReg(TrueReg);
2752 /// isHReg - Test if the given register is a physical h register.
2753 static bool isHReg(unsigned Reg) {
2754 return X86::GR8_ABCD_HRegClass.contains(Reg);
2757 // Try and copy between VR128/VR64 and GR64 registers.
2758 static unsigned CopyToFromAsymmetricReg(unsigned DestReg, unsigned SrcReg,
2760 // SrcReg(VR128) -> DestReg(GR64)
2761 // SrcReg(VR64) -> DestReg(GR64)
2762 // SrcReg(GR64) -> DestReg(VR128)
2763 // SrcReg(GR64) -> DestReg(VR64)
2765 if (X86::GR64RegClass.contains(DestReg)) {
2766 if (X86::VR128RegClass.contains(SrcReg))
2767 // Copy from a VR128 register to a GR64 register.
2768 return HasAVX ? X86::VMOVPQIto64rr : X86::MOVPQIto64rr;
2769 if (X86::VR64RegClass.contains(SrcReg))
2770 // Copy from a VR64 register to a GR64 register.
2771 return X86::MOVSDto64rr;
2772 } else if (X86::GR64RegClass.contains(SrcReg)) {
2773 // Copy from a GR64 register to a VR128 register.
2774 if (X86::VR128RegClass.contains(DestReg))
2775 return HasAVX ? X86::VMOV64toPQIrr : X86::MOV64toPQIrr;
2776 // Copy from a GR64 register to a VR64 register.
2777 if (X86::VR64RegClass.contains(DestReg))
2778 return X86::MOV64toSDrr;
2781 // SrcReg(FR32) -> DestReg(GR32)
2782 // SrcReg(GR32) -> DestReg(FR32)
2784 if (X86::GR32RegClass.contains(DestReg) && X86::FR32RegClass.contains(SrcReg))
2785 // Copy from a FR32 register to a GR32 register.
2786 return HasAVX ? X86::VMOVSS2DIrr : X86::MOVSS2DIrr;
2788 if (X86::FR32RegClass.contains(DestReg) && X86::GR32RegClass.contains(SrcReg))
2789 // Copy from a GR32 register to a FR32 register.
2790 return HasAVX ? X86::VMOVDI2SSrr : X86::MOVDI2SSrr;
2795 void X86InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
2796 MachineBasicBlock::iterator MI, DebugLoc DL,
2797 unsigned DestReg, unsigned SrcReg,
2798 bool KillSrc) const {
2799 // First deal with the normal symmetric copies.
2800 bool HasAVX = TM.getSubtarget<X86Subtarget>().hasAVX();
2802 if (X86::GR64RegClass.contains(DestReg, SrcReg))
2804 else if (X86::GR32RegClass.contains(DestReg, SrcReg))
2806 else if (X86::GR16RegClass.contains(DestReg, SrcReg))
2808 else if (X86::GR8RegClass.contains(DestReg, SrcReg)) {
2809 // Copying to or from a physical H register on x86-64 requires a NOREX
2810 // move. Otherwise use a normal move.
2811 if ((isHReg(DestReg) || isHReg(SrcReg)) &&
2812 TM.getSubtarget<X86Subtarget>().is64Bit()) {
2813 Opc = X86::MOV8rr_NOREX;
2814 // Both operands must be encodable without an REX prefix.
2815 assert(X86::GR8_NOREXRegClass.contains(SrcReg, DestReg) &&
2816 "8-bit H register can not be copied outside GR8_NOREX");
2819 } else if (X86::VR128RegClass.contains(DestReg, SrcReg))
2820 Opc = HasAVX ? X86::VMOVAPSrr : X86::MOVAPSrr;
2821 else if (X86::VR256RegClass.contains(DestReg, SrcReg))
2822 Opc = X86::VMOVAPSYrr;
2823 else if (X86::VR64RegClass.contains(DestReg, SrcReg))
2824 Opc = X86::MMX_MOVQ64rr;
2826 Opc = CopyToFromAsymmetricReg(DestReg, SrcReg, HasAVX);
2829 BuildMI(MBB, MI, DL, get(Opc), DestReg)
2830 .addReg(SrcReg, getKillRegState(KillSrc));
2834 // Moving EFLAGS to / from another register requires a push and a pop.
2835 if (SrcReg == X86::EFLAGS) {
2836 if (X86::GR64RegClass.contains(DestReg)) {
2837 BuildMI(MBB, MI, DL, get(X86::PUSHF64));
2838 BuildMI(MBB, MI, DL, get(X86::POP64r), DestReg);
2841 if (X86::GR32RegClass.contains(DestReg)) {
2842 BuildMI(MBB, MI, DL, get(X86::PUSHF32));
2843 BuildMI(MBB, MI, DL, get(X86::POP32r), DestReg);
2847 if (DestReg == X86::EFLAGS) {
2848 if (X86::GR64RegClass.contains(SrcReg)) {
2849 BuildMI(MBB, MI, DL, get(X86::PUSH64r))
2850 .addReg(SrcReg, getKillRegState(KillSrc));
2851 BuildMI(MBB, MI, DL, get(X86::POPF64));
2854 if (X86::GR32RegClass.contains(SrcReg)) {
2855 BuildMI(MBB, MI, DL, get(X86::PUSH32r))
2856 .addReg(SrcReg, getKillRegState(KillSrc));
2857 BuildMI(MBB, MI, DL, get(X86::POPF32));
2862 DEBUG(dbgs() << "Cannot copy " << RI.getName(SrcReg)
2863 << " to " << RI.getName(DestReg) << '\n');
2864 llvm_unreachable("Cannot emit physreg copy instruction");
2867 static unsigned getLoadStoreRegOpcode(unsigned Reg,
2868 const TargetRegisterClass *RC,
2869 bool isStackAligned,
2870 const TargetMachine &TM,
2872 bool HasAVX = TM.getSubtarget<X86Subtarget>().hasAVX();
2873 switch (RC->getSize()) {
2875 llvm_unreachable("Unknown spill size");
2877 assert(X86::GR8RegClass.hasSubClassEq(RC) && "Unknown 1-byte regclass");
2878 if (TM.getSubtarget<X86Subtarget>().is64Bit())
2879 // Copying to or from a physical H register on x86-64 requires a NOREX
2880 // move. Otherwise use a normal move.
2881 if (isHReg(Reg) || X86::GR8_ABCD_HRegClass.hasSubClassEq(RC))
2882 return load ? X86::MOV8rm_NOREX : X86::MOV8mr_NOREX;
2883 return load ? X86::MOV8rm : X86::MOV8mr;
2885 assert(X86::GR16RegClass.hasSubClassEq(RC) && "Unknown 2-byte regclass");
2886 return load ? X86::MOV16rm : X86::MOV16mr;
2888 if (X86::GR32RegClass.hasSubClassEq(RC))
2889 return load ? X86::MOV32rm : X86::MOV32mr;
2890 if (X86::FR32RegClass.hasSubClassEq(RC))
2892 (HasAVX ? X86::VMOVSSrm : X86::MOVSSrm) :
2893 (HasAVX ? X86::VMOVSSmr : X86::MOVSSmr);
2894 if (X86::RFP32RegClass.hasSubClassEq(RC))
2895 return load ? X86::LD_Fp32m : X86::ST_Fp32m;
2896 llvm_unreachable("Unknown 4-byte regclass");
2898 if (X86::GR64RegClass.hasSubClassEq(RC))
2899 return load ? X86::MOV64rm : X86::MOV64mr;
2900 if (X86::FR64RegClass.hasSubClassEq(RC))
2902 (HasAVX ? X86::VMOVSDrm : X86::MOVSDrm) :
2903 (HasAVX ? X86::VMOVSDmr : X86::MOVSDmr);
2904 if (X86::VR64RegClass.hasSubClassEq(RC))
2905 return load ? X86::MMX_MOVQ64rm : X86::MMX_MOVQ64mr;
2906 if (X86::RFP64RegClass.hasSubClassEq(RC))
2907 return load ? X86::LD_Fp64m : X86::ST_Fp64m;
2908 llvm_unreachable("Unknown 8-byte regclass");
2910 assert(X86::RFP80RegClass.hasSubClassEq(RC) && "Unknown 10-byte regclass");
2911 return load ? X86::LD_Fp80m : X86::ST_FpP80m;
2913 assert(X86::VR128RegClass.hasSubClassEq(RC) && "Unknown 16-byte regclass");
2914 // If stack is realigned we can use aligned stores.
2917 (HasAVX ? X86::VMOVAPSrm : X86::MOVAPSrm) :
2918 (HasAVX ? X86::VMOVAPSmr : X86::MOVAPSmr);
2921 (HasAVX ? X86::VMOVUPSrm : X86::MOVUPSrm) :
2922 (HasAVX ? X86::VMOVUPSmr : X86::MOVUPSmr);
2925 assert(X86::VR256RegClass.hasSubClassEq(RC) && "Unknown 32-byte regclass");
2926 // If stack is realigned we can use aligned stores.
2928 return load ? X86::VMOVAPSYrm : X86::VMOVAPSYmr;
2930 return load ? X86::VMOVUPSYrm : X86::VMOVUPSYmr;
2934 static unsigned getStoreRegOpcode(unsigned SrcReg,
2935 const TargetRegisterClass *RC,
2936 bool isStackAligned,
2937 TargetMachine &TM) {
2938 return getLoadStoreRegOpcode(SrcReg, RC, isStackAligned, TM, false);
2942 static unsigned getLoadRegOpcode(unsigned DestReg,
2943 const TargetRegisterClass *RC,
2944 bool isStackAligned,
2945 const TargetMachine &TM) {
2946 return getLoadStoreRegOpcode(DestReg, RC, isStackAligned, TM, true);
2949 void X86InstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
2950 MachineBasicBlock::iterator MI,
2951 unsigned SrcReg, bool isKill, int FrameIdx,
2952 const TargetRegisterClass *RC,
2953 const TargetRegisterInfo *TRI) const {
2954 const MachineFunction &MF = *MBB.getParent();
2955 assert(MF.getFrameInfo()->getObjectSize(FrameIdx) >= RC->getSize() &&
2956 "Stack slot too small for store");
2957 unsigned Alignment = RC->getSize() == 32 ? 32 : 16;
2958 bool isAligned = (TM.getFrameLowering()->getStackAlignment() >= Alignment) ||
2959 RI.canRealignStack(MF);
2960 unsigned Opc = getStoreRegOpcode(SrcReg, RC, isAligned, TM);
2961 DebugLoc DL = MBB.findDebugLoc(MI);
2962 addFrameReference(BuildMI(MBB, MI, DL, get(Opc)), FrameIdx)
2963 .addReg(SrcReg, getKillRegState(isKill));
2966 void X86InstrInfo::storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
2968 SmallVectorImpl<MachineOperand> &Addr,
2969 const TargetRegisterClass *RC,
2970 MachineInstr::mmo_iterator MMOBegin,
2971 MachineInstr::mmo_iterator MMOEnd,
2972 SmallVectorImpl<MachineInstr*> &NewMIs) const {
2973 unsigned Alignment = RC->getSize() == 32 ? 32 : 16;
2974 bool isAligned = MMOBegin != MMOEnd &&
2975 (*MMOBegin)->getAlignment() >= Alignment;
2976 unsigned Opc = getStoreRegOpcode(SrcReg, RC, isAligned, TM);
2978 MachineInstrBuilder MIB = BuildMI(MF, DL, get(Opc));
2979 for (unsigned i = 0, e = Addr.size(); i != e; ++i)
2980 MIB.addOperand(Addr[i]);
2981 MIB.addReg(SrcReg, getKillRegState(isKill));
2982 (*MIB).setMemRefs(MMOBegin, MMOEnd);
2983 NewMIs.push_back(MIB);
2987 void X86InstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
2988 MachineBasicBlock::iterator MI,
2989 unsigned DestReg, int FrameIdx,
2990 const TargetRegisterClass *RC,
2991 const TargetRegisterInfo *TRI) const {
2992 const MachineFunction &MF = *MBB.getParent();
2993 unsigned Alignment = RC->getSize() == 32 ? 32 : 16;
2994 bool isAligned = (TM.getFrameLowering()->getStackAlignment() >= Alignment) ||
2995 RI.canRealignStack(MF);
2996 unsigned Opc = getLoadRegOpcode(DestReg, RC, isAligned, TM);
2997 DebugLoc DL = MBB.findDebugLoc(MI);
2998 addFrameReference(BuildMI(MBB, MI, DL, get(Opc), DestReg), FrameIdx);
3001 void X86InstrInfo::loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
3002 SmallVectorImpl<MachineOperand> &Addr,
3003 const TargetRegisterClass *RC,
3004 MachineInstr::mmo_iterator MMOBegin,
3005 MachineInstr::mmo_iterator MMOEnd,
3006 SmallVectorImpl<MachineInstr*> &NewMIs) const {
3007 unsigned Alignment = RC->getSize() == 32 ? 32 : 16;
3008 bool isAligned = MMOBegin != MMOEnd &&
3009 (*MMOBegin)->getAlignment() >= Alignment;
3010 unsigned Opc = getLoadRegOpcode(DestReg, RC, isAligned, TM);
3012 MachineInstrBuilder MIB = BuildMI(MF, DL, get(Opc), DestReg);
3013 for (unsigned i = 0, e = Addr.size(); i != e; ++i)
3014 MIB.addOperand(Addr[i]);
3015 (*MIB).setMemRefs(MMOBegin, MMOEnd);
3016 NewMIs.push_back(MIB);
3020 analyzeCompare(const MachineInstr *MI, unsigned &SrcReg, unsigned &SrcReg2,
3021 int &CmpMask, int &CmpValue) const {
3022 switch (MI->getOpcode()) {
3024 case X86::CMP64ri32:
3031 SrcReg = MI->getOperand(0).getReg();
3034 CmpValue = MI->getOperand(1).getImm();
3036 // A SUB can be used to perform comparison.
3041 SrcReg = MI->getOperand(1).getReg();
3050 SrcReg = MI->getOperand(1).getReg();
3051 SrcReg2 = MI->getOperand(2).getReg();
3055 case X86::SUB64ri32:
3062 SrcReg = MI->getOperand(1).getReg();
3065 CmpValue = MI->getOperand(2).getImm();
3071 SrcReg = MI->getOperand(0).getReg();
3072 SrcReg2 = MI->getOperand(1).getReg();
3080 SrcReg = MI->getOperand(0).getReg();
3081 if (MI->getOperand(1).getReg() != SrcReg) return false;
3082 // Compare against zero.
3091 /// isRedundantFlagInstr - check whether the first instruction, whose only
3092 /// purpose is to update flags, can be made redundant.
3093 /// CMPrr can be made redundant by SUBrr if the operands are the same.
3094 /// This function can be extended later on.
3095 /// SrcReg, SrcRegs: register operands for FlagI.
3096 /// ImmValue: immediate for FlagI if it takes an immediate.
3097 inline static bool isRedundantFlagInstr(MachineInstr *FlagI, unsigned SrcReg,
3098 unsigned SrcReg2, int ImmValue,
3100 if (((FlagI->getOpcode() == X86::CMP64rr &&
3101 OI->getOpcode() == X86::SUB64rr) ||
3102 (FlagI->getOpcode() == X86::CMP32rr &&
3103 OI->getOpcode() == X86::SUB32rr)||
3104 (FlagI->getOpcode() == X86::CMP16rr &&
3105 OI->getOpcode() == X86::SUB16rr)||
3106 (FlagI->getOpcode() == X86::CMP8rr &&
3107 OI->getOpcode() == X86::SUB8rr)) &&
3108 ((OI->getOperand(1).getReg() == SrcReg &&
3109 OI->getOperand(2).getReg() == SrcReg2) ||
3110 (OI->getOperand(1).getReg() == SrcReg2 &&
3111 OI->getOperand(2).getReg() == SrcReg)))
3114 if (((FlagI->getOpcode() == X86::CMP64ri32 &&
3115 OI->getOpcode() == X86::SUB64ri32) ||
3116 (FlagI->getOpcode() == X86::CMP64ri8 &&
3117 OI->getOpcode() == X86::SUB64ri8) ||
3118 (FlagI->getOpcode() == X86::CMP32ri &&
3119 OI->getOpcode() == X86::SUB32ri) ||
3120 (FlagI->getOpcode() == X86::CMP32ri8 &&
3121 OI->getOpcode() == X86::SUB32ri8) ||
3122 (FlagI->getOpcode() == X86::CMP16ri &&
3123 OI->getOpcode() == X86::SUB16ri) ||
3124 (FlagI->getOpcode() == X86::CMP16ri8 &&
3125 OI->getOpcode() == X86::SUB16ri8) ||
3126 (FlagI->getOpcode() == X86::CMP8ri &&
3127 OI->getOpcode() == X86::SUB8ri)) &&
3128 OI->getOperand(1).getReg() == SrcReg &&
3129 OI->getOperand(2).getImm() == ImmValue)
3134 /// isDefConvertible - check whether the definition can be converted
3135 /// to remove a comparison against zero.
3136 inline static bool isDefConvertible(MachineInstr *MI) {
3137 switch (MI->getOpcode()) {
3138 default: return false;
3139 case X86::SUB64ri32: case X86::SUB64ri8: case X86::SUB32ri:
3140 case X86::SUB32ri8: case X86::SUB16ri: case X86::SUB16ri8:
3141 case X86::SUB8ri: case X86::SUB64rr: case X86::SUB32rr:
3142 case X86::SUB16rr: case X86::SUB8rr: case X86::SUB64rm:
3143 case X86::SUB32rm: case X86::SUB16rm: case X86::SUB8rm:
3144 case X86::DEC64r: case X86::DEC32r: case X86::DEC16r: case X86::DEC8r:
3145 case X86::DEC64m: case X86::DEC32m: case X86::DEC16m: case X86::DEC8m:
3146 case X86::DEC64_32r: case X86::DEC64_16r:
3147 case X86::DEC64_32m: case X86::DEC64_16m:
3148 case X86::ADD64ri32: case X86::ADD64ri8: case X86::ADD32ri:
3149 case X86::ADD32ri8: case X86::ADD16ri: case X86::ADD16ri8:
3150 case X86::ADD8ri: case X86::ADD64rr: case X86::ADD32rr:
3151 case X86::ADD16rr: case X86::ADD8rr: case X86::ADD64rm:
3152 case X86::ADD32rm: case X86::ADD16rm: case X86::ADD8rm:
3153 case X86::INC64r: case X86::INC32r: case X86::INC16r: case X86::INC8r:
3154 case X86::INC64m: case X86::INC32m: case X86::INC16m: case X86::INC8m:
3155 case X86::INC64_32r: case X86::INC64_16r:
3156 case X86::INC64_32m: case X86::INC64_16m:
3157 case X86::AND64ri32: case X86::AND64ri8: case X86::AND32ri:
3158 case X86::AND32ri8: case X86::AND16ri: case X86::AND16ri8:
3159 case X86::AND8ri: case X86::AND64rr: case X86::AND32rr:
3160 case X86::AND16rr: case X86::AND8rr: case X86::AND64rm:
3161 case X86::AND32rm: case X86::AND16rm: case X86::AND8rm:
3162 case X86::XOR64ri32: case X86::XOR64ri8: case X86::XOR32ri:
3163 case X86::XOR32ri8: case X86::XOR16ri: case X86::XOR16ri8:
3164 case X86::XOR8ri: case X86::XOR64rr: case X86::XOR32rr:
3165 case X86::XOR16rr: case X86::XOR8rr: case X86::XOR64rm:
3166 case X86::XOR32rm: case X86::XOR16rm: case X86::XOR8rm:
3167 case X86::OR64ri32: case X86::OR64ri8: case X86::OR32ri:
3168 case X86::OR32ri8: case X86::OR16ri: case X86::OR16ri8:
3169 case X86::OR8ri: case X86::OR64rr: case X86::OR32rr:
3170 case X86::OR16rr: case X86::OR8rr: case X86::OR64rm:
3171 case X86::OR32rm: case X86::OR16rm: case X86::OR8rm:
3176 /// optimizeCompareInstr - Check if there exists an earlier instruction that
3177 /// operates on the same source operands and sets flags in the same way as
3178 /// Compare; remove Compare if possible.
3180 optimizeCompareInstr(MachineInstr *CmpInstr, unsigned SrcReg, unsigned SrcReg2,
3181 int CmpMask, int CmpValue,
3182 const MachineRegisterInfo *MRI) const {
3183 // Check whether we can replace SUB with CMP.
3184 unsigned NewOpcode = 0;
3185 switch (CmpInstr->getOpcode()) {
3187 case X86::SUB64ri32:
3202 if (!MRI->use_nodbg_empty(CmpInstr->getOperand(0).getReg()))
3204 // There is no use of the destination register, we can replace SUB with CMP.
3205 switch (CmpInstr->getOpcode()) {
3206 default: llvm_unreachable("Unreachable!");
3207 case X86::SUB64rm: NewOpcode = X86::CMP64rm; break;
3208 case X86::SUB32rm: NewOpcode = X86::CMP32rm; break;
3209 case X86::SUB16rm: NewOpcode = X86::CMP16rm; break;
3210 case X86::SUB8rm: NewOpcode = X86::CMP8rm; break;
3211 case X86::SUB64rr: NewOpcode = X86::CMP64rr; break;
3212 case X86::SUB32rr: NewOpcode = X86::CMP32rr; break;
3213 case X86::SUB16rr: NewOpcode = X86::CMP16rr; break;
3214 case X86::SUB8rr: NewOpcode = X86::CMP8rr; break;
3215 case X86::SUB64ri32: NewOpcode = X86::CMP64ri32; break;
3216 case X86::SUB64ri8: NewOpcode = X86::CMP64ri8; break;
3217 case X86::SUB32ri: NewOpcode = X86::CMP32ri; break;
3218 case X86::SUB32ri8: NewOpcode = X86::CMP32ri8; break;
3219 case X86::SUB16ri: NewOpcode = X86::CMP16ri; break;
3220 case X86::SUB16ri8: NewOpcode = X86::CMP16ri8; break;
3221 case X86::SUB8ri: NewOpcode = X86::CMP8ri; break;
3223 CmpInstr->setDesc(get(NewOpcode));
3224 CmpInstr->RemoveOperand(0);
3225 // Fall through to optimize Cmp if Cmp is CMPrr or CMPri.
3226 if (NewOpcode == X86::CMP64rm || NewOpcode == X86::CMP32rm ||
3227 NewOpcode == X86::CMP16rm || NewOpcode == X86::CMP8rm)
3232 // Get the unique definition of SrcReg.
3233 MachineInstr *MI = MRI->getUniqueVRegDef(SrcReg);
3234 if (!MI) return false;
3236 // CmpInstr is the first instruction of the BB.
3237 MachineBasicBlock::iterator I = CmpInstr, Def = MI;
3239 // If we are comparing against zero, check whether we can use MI to update
3240 // EFLAGS. If MI is not in the same BB as CmpInstr, do not optimize.
3241 bool IsCmpZero = (SrcReg2 == 0 && CmpValue == 0);
3242 if (IsCmpZero && (MI->getParent() != CmpInstr->getParent() ||
3243 !isDefConvertible(MI)))
3246 // We are searching for an earlier instruction that can make CmpInstr
3247 // redundant and that instruction will be saved in Sub.
3248 MachineInstr *Sub = NULL;
3249 const TargetRegisterInfo *TRI = &getRegisterInfo();
3251 // We iterate backward, starting from the instruction before CmpInstr and
3252 // stop when reaching the definition of a source register or done with the BB.
3253 // RI points to the instruction before CmpInstr.
3254 // If the definition is in this basic block, RE points to the definition;
3255 // otherwise, RE is the rend of the basic block.
3256 MachineBasicBlock::reverse_iterator
3257 RI = MachineBasicBlock::reverse_iterator(I),
3258 RE = CmpInstr->getParent() == MI->getParent() ?
3259 MachineBasicBlock::reverse_iterator(++Def) /* points to MI */ :
3260 CmpInstr->getParent()->rend();
3261 MachineInstr *Movr0Inst = 0;
3262 for (; RI != RE; ++RI) {
3263 MachineInstr *Instr = &*RI;
3264 // Check whether CmpInstr can be made redundant by the current instruction.
3266 isRedundantFlagInstr(CmpInstr, SrcReg, SrcReg2, CmpValue, Instr)) {
3271 if (Instr->modifiesRegister(X86::EFLAGS, TRI) ||
3272 Instr->readsRegister(X86::EFLAGS, TRI)) {
3273 // This instruction modifies or uses EFLAGS.
3275 // MOV32r0 etc. are implemented with xor which clobbers condition code.
3276 // They are safe to move up, if the definition to EFLAGS is dead and
3277 // earlier instructions do not read or write EFLAGS.
3278 if (!Movr0Inst && (Instr->getOpcode() == X86::MOV8r0 ||
3279 Instr->getOpcode() == X86::MOV16r0 ||
3280 Instr->getOpcode() == X86::MOV32r0 ||
3281 Instr->getOpcode() == X86::MOV64r0) &&
3282 Instr->registerDefIsDead(X86::EFLAGS, TRI)) {
3287 // We can't remove CmpInstr.
3292 // Return false if no candidates exist.
3293 if (!IsCmpZero && !Sub)
3296 bool IsSwapped = (SrcReg2 != 0 && Sub->getOperand(1).getReg() == SrcReg2 &&
3297 Sub->getOperand(2).getReg() == SrcReg);
3299 // Scan forward from the instruction after CmpInstr for uses of EFLAGS.
3300 // It is safe to remove CmpInstr if EFLAGS is redefined or killed.
3301 // If we are done with the basic block, we need to check whether EFLAGS is
3303 bool IsSafe = false;
3304 SmallVector<std::pair<MachineInstr*, unsigned /*NewOpc*/>, 4> OpsToUpdate;
3305 MachineBasicBlock::iterator E = CmpInstr->getParent()->end();
3306 for (++I; I != E; ++I) {
3307 const MachineInstr &Instr = *I;
3308 bool ModifyEFLAGS = Instr.modifiesRegister(X86::EFLAGS, TRI);
3309 bool UseEFLAGS = Instr.readsRegister(X86::EFLAGS, TRI);
3310 // We should check the usage if this instruction uses and updates EFLAGS.
3311 if (!UseEFLAGS && ModifyEFLAGS) {
3312 // It is safe to remove CmpInstr if EFLAGS is updated again.
3316 if (!UseEFLAGS && !ModifyEFLAGS)
3319 // EFLAGS is used by this instruction.
3320 X86::CondCode OldCC;
3321 bool OpcIsSET = false;
3322 if (IsCmpZero || IsSwapped) {
3323 // We decode the condition code from opcode.
3324 if (Instr.isBranch())
3325 OldCC = getCondFromBranchOpc(Instr.getOpcode());
3327 OldCC = getCondFromSETOpc(Instr.getOpcode());
3328 if (OldCC != X86::COND_INVALID)
3331 OldCC = X86::getCondFromCMovOpc(Instr.getOpcode());
3333 if (OldCC == X86::COND_INVALID) return false;
3338 case X86::COND_A: case X86::COND_AE:
3339 case X86::COND_B: case X86::COND_BE:
3340 case X86::COND_G: case X86::COND_GE:
3341 case X86::COND_L: case X86::COND_LE:
3342 case X86::COND_O: case X86::COND_NO:
3343 // CF and OF are used, we can't perform this optimization.
3346 } else if (IsSwapped) {
3347 // If we have SUB(r1, r2) and CMP(r2, r1), the condition code needs
3348 // to be changed from r2 > r1 to r1 < r2, from r2 < r1 to r1 > r2, etc.
3349 // We swap the condition code and synthesize the new opcode.
3350 X86::CondCode NewCC = getSwappedCondition(OldCC);
3351 if (NewCC == X86::COND_INVALID) return false;
3353 // Synthesize the new opcode.
3354 bool HasMemoryOperand = Instr.hasOneMemOperand();
3356 if (Instr.isBranch())
3357 NewOpc = GetCondBranchFromCond(NewCC);
3359 NewOpc = getSETFromCond(NewCC, HasMemoryOperand);
3361 unsigned DstReg = Instr.getOperand(0).getReg();
3362 NewOpc = getCMovFromCond(NewCC, MRI->getRegClass(DstReg)->getSize(),
3366 // Push the MachineInstr to OpsToUpdate.
3367 // If it is safe to remove CmpInstr, the condition code of these
3368 // instructions will be modified.
3369 OpsToUpdate.push_back(std::make_pair(&*I, NewOpc));
3371 if (ModifyEFLAGS || Instr.killsRegister(X86::EFLAGS, TRI)) {
3372 // It is safe to remove CmpInstr if EFLAGS is updated again or killed.
3378 // If EFLAGS is not killed nor re-defined, we should check whether it is
3379 // live-out. If it is live-out, do not optimize.
3380 if ((IsCmpZero || IsSwapped) && !IsSafe) {
3381 MachineBasicBlock *MBB = CmpInstr->getParent();
3382 for (MachineBasicBlock::succ_iterator SI = MBB->succ_begin(),
3383 SE = MBB->succ_end(); SI != SE; ++SI)
3384 if ((*SI)->isLiveIn(X86::EFLAGS))
3388 // The instruction to be updated is either Sub or MI.
3389 Sub = IsCmpZero ? MI : Sub;
3390 // Move Movr0Inst to the place right before Sub.
3392 Sub->getParent()->remove(Movr0Inst);
3393 Sub->getParent()->insert(MachineBasicBlock::iterator(Sub), Movr0Inst);
3396 // Make sure Sub instruction defines EFLAGS and mark the def live.
3397 unsigned LastOperand = Sub->getNumOperands() - 1;
3398 assert(Sub->getNumOperands() >= 2 &&
3399 Sub->getOperand(LastOperand).isReg() &&
3400 Sub->getOperand(LastOperand).getReg() == X86::EFLAGS &&
3401 "EFLAGS should be the last operand of SUB, ADD, OR, XOR, AND");
3402 Sub->getOperand(LastOperand).setIsDef(true);
3403 Sub->getOperand(LastOperand).setIsDead(false);
3404 CmpInstr->eraseFromParent();
3406 // Modify the condition code of instructions in OpsToUpdate.
3407 for (unsigned i = 0, e = OpsToUpdate.size(); i < e; i++)
3408 OpsToUpdate[i].first->setDesc(get(OpsToUpdate[i].second));
3412 /// optimizeLoadInstr - Try to remove the load by folding it to a register
3413 /// operand at the use. We fold the load instructions if load defines a virtual
3414 /// register, the virtual register is used once in the same BB, and the
3415 /// instructions in-between do not load or store, and have no side effects.
3416 MachineInstr* X86InstrInfo::
3417 optimizeLoadInstr(MachineInstr *MI, const MachineRegisterInfo *MRI,
3418 unsigned &FoldAsLoadDefReg,
3419 MachineInstr *&DefMI) const {
3420 if (FoldAsLoadDefReg == 0)
3422 // To be conservative, if there exists another load, clear the load candidate.
3423 if (MI->mayLoad()) {
3424 FoldAsLoadDefReg = 0;
3428 // Check whether we can move DefMI here.
3429 DefMI = MRI->getVRegDef(FoldAsLoadDefReg);
3431 bool SawStore = false;
3432 if (!DefMI->isSafeToMove(this, 0, SawStore))
3435 // We try to commute MI if possible.
3436 unsigned IdxEnd = (MI->isCommutable()) ? 2 : 1;
3437 for (unsigned Idx = 0; Idx < IdxEnd; Idx++) {
3438 // Collect information about virtual register operands of MI.
3439 unsigned SrcOperandId = 0;
3440 bool FoundSrcOperand = false;
3441 for (unsigned i = 0, e = MI->getDesc().getNumOperands(); i != e; ++i) {
3442 MachineOperand &MO = MI->getOperand(i);
3445 unsigned Reg = MO.getReg();
3446 if (Reg != FoldAsLoadDefReg)
3448 // Do not fold if we have a subreg use or a def or multiple uses.
3449 if (MO.getSubReg() || MO.isDef() || FoundSrcOperand)
3453 FoundSrcOperand = true;
3455 if (!FoundSrcOperand) return 0;
3457 // Check whether we can fold the def into SrcOperandId.
3458 SmallVector<unsigned, 8> Ops;
3459 Ops.push_back(SrcOperandId);
3460 MachineInstr *FoldMI = foldMemoryOperand(MI, Ops, DefMI);
3462 FoldAsLoadDefReg = 0;
3467 // MI was changed but it didn't help, commute it back!
3468 commuteInstruction(MI, false);
3472 // Check whether we can commute MI and enable folding.
3473 if (MI->isCommutable()) {
3474 MachineInstr *NewMI = commuteInstruction(MI, false);
3475 // Unable to commute.
3476 if (!NewMI) return 0;
3478 // New instruction. It doesn't need to be kept.
3479 NewMI->eraseFromParent();
3487 /// Expand2AddrUndef - Expand a single-def pseudo instruction to a two-addr
3488 /// instruction with two undef reads of the register being defined. This is
3489 /// used for mapping:
3492 /// %xmm4 = PXORrr %xmm4<undef>, %xmm4<undef>
3494 static bool Expand2AddrUndef(MachineInstr *MI, const MCInstrDesc &Desc) {
3495 assert(Desc.getNumOperands() == 3 && "Expected two-addr instruction.");
3496 unsigned Reg = MI->getOperand(0).getReg();
3499 // MachineInstr::addOperand() will insert explicit operands before any
3500 // implicit operands.
3501 MachineInstrBuilder(MI).addReg(Reg, RegState::Undef)
3502 .addReg(Reg, RegState::Undef);
3503 // But we don't trust that.
3504 assert(MI->getOperand(1).getReg() == Reg &&
3505 MI->getOperand(2).getReg() == Reg && "Misplaced operand");
3509 bool X86InstrInfo::expandPostRAPseudo(MachineBasicBlock::iterator MI) const {
3510 bool HasAVX = TM.getSubtarget<X86Subtarget>().hasAVX();
3511 switch (MI->getOpcode()) {
3515 return Expand2AddrUndef(MI, get(HasAVX ? X86::VXORPSrr : X86::XORPSrr));
3517 assert(HasAVX && "AVX not supported");
3518 return Expand2AddrUndef(MI, get(X86::VXORPSYrr));
3519 case X86::V_SETALLONES:
3520 return Expand2AddrUndef(MI, get(HasAVX ? X86::VPCMPEQDrr : X86::PCMPEQDrr));
3521 case X86::AVX2_SETALLONES:
3522 return Expand2AddrUndef(MI, get(X86::VPCMPEQDYrr));
3523 case X86::TEST8ri_NOREX:
3524 MI->setDesc(get(X86::TEST8ri));
3531 X86InstrInfo::emitFrameIndexDebugValue(MachineFunction &MF,
3532 int FrameIx, uint64_t Offset,
3533 const MDNode *MDPtr,
3534 DebugLoc DL) const {
3536 AM.BaseType = X86AddressMode::FrameIndexBase;
3537 AM.Base.FrameIndex = FrameIx;
3538 MachineInstrBuilder MIB = BuildMI(MF, DL, get(X86::DBG_VALUE));
3539 addFullAddress(MIB, AM).addImm(Offset).addMetadata(MDPtr);
3543 static MachineInstr *FuseTwoAddrInst(MachineFunction &MF, unsigned Opcode,
3544 const SmallVectorImpl<MachineOperand> &MOs,
3546 const TargetInstrInfo &TII) {
3547 // Create the base instruction with the memory operand as the first part.
3548 MachineInstr *NewMI = MF.CreateMachineInstr(TII.get(Opcode),
3549 MI->getDebugLoc(), true);
3550 MachineInstrBuilder MIB(NewMI);
3551 unsigned NumAddrOps = MOs.size();
3552 for (unsigned i = 0; i != NumAddrOps; ++i)
3553 MIB.addOperand(MOs[i]);
3554 if (NumAddrOps < 4) // FrameIndex only
3557 // Loop over the rest of the ri operands, converting them over.
3558 unsigned NumOps = MI->getDesc().getNumOperands()-2;
3559 for (unsigned i = 0; i != NumOps; ++i) {
3560 MachineOperand &MO = MI->getOperand(i+2);
3563 for (unsigned i = NumOps+2, e = MI->getNumOperands(); i != e; ++i) {
3564 MachineOperand &MO = MI->getOperand(i);
3570 static MachineInstr *FuseInst(MachineFunction &MF,
3571 unsigned Opcode, unsigned OpNo,
3572 const SmallVectorImpl<MachineOperand> &MOs,
3573 MachineInstr *MI, const TargetInstrInfo &TII) {
3574 MachineInstr *NewMI = MF.CreateMachineInstr(TII.get(Opcode),
3575 MI->getDebugLoc(), true);
3576 MachineInstrBuilder MIB(NewMI);
3578 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
3579 MachineOperand &MO = MI->getOperand(i);
3581 assert(MO.isReg() && "Expected to fold into reg operand!");
3582 unsigned NumAddrOps = MOs.size();
3583 for (unsigned i = 0; i != NumAddrOps; ++i)
3584 MIB.addOperand(MOs[i]);
3585 if (NumAddrOps < 4) // FrameIndex only
3594 static MachineInstr *MakeM0Inst(const TargetInstrInfo &TII, unsigned Opcode,
3595 const SmallVectorImpl<MachineOperand> &MOs,
3597 MachineFunction &MF = *MI->getParent()->getParent();
3598 MachineInstrBuilder MIB = BuildMI(MF, MI->getDebugLoc(), TII.get(Opcode));
3600 unsigned NumAddrOps = MOs.size();
3601 for (unsigned i = 0; i != NumAddrOps; ++i)
3602 MIB.addOperand(MOs[i]);
3603 if (NumAddrOps < 4) // FrameIndex only
3605 return MIB.addImm(0);
3609 X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
3610 MachineInstr *MI, unsigned i,
3611 const SmallVectorImpl<MachineOperand> &MOs,
3612 unsigned Size, unsigned Align) const {
3613 const DenseMap<unsigned, std::pair<unsigned,unsigned> > *OpcodeTablePtr = 0;
3614 bool isTwoAddrFold = false;
3615 unsigned NumOps = MI->getDesc().getNumOperands();
3616 bool isTwoAddr = NumOps > 1 &&
3617 MI->getDesc().getOperandConstraint(1, MCOI::TIED_TO) != -1;
3619 // FIXME: AsmPrinter doesn't know how to handle
3620 // X86II::MO_GOT_ABSOLUTE_ADDRESS after folding.
3621 if (MI->getOpcode() == X86::ADD32ri &&
3622 MI->getOperand(2).getTargetFlags() == X86II::MO_GOT_ABSOLUTE_ADDRESS)
3625 MachineInstr *NewMI = NULL;
3626 // Folding a memory location into the two-address part of a two-address
3627 // instruction is different than folding it other places. It requires
3628 // replacing the *two* registers with the memory location.
3629 if (isTwoAddr && NumOps >= 2 && i < 2 &&
3630 MI->getOperand(0).isReg() &&
3631 MI->getOperand(1).isReg() &&
3632 MI->getOperand(0).getReg() == MI->getOperand(1).getReg()) {
3633 OpcodeTablePtr = &RegOp2MemOpTable2Addr;
3634 isTwoAddrFold = true;
3635 } else if (i == 0) { // If operand 0
3637 switch (MI->getOpcode()) {
3639 case X86::MOV64r0: Opc = X86::MOV64mi32; break;
3640 case X86::MOV32r0: Opc = X86::MOV32mi; break;
3641 case X86::MOV16r0: Opc = X86::MOV16mi; break;
3642 case X86::MOV8r0: Opc = X86::MOV8mi; break;
3645 NewMI = MakeM0Inst(*this, Opc, MOs, MI);
3649 OpcodeTablePtr = &RegOp2MemOpTable0;
3650 } else if (i == 1) {
3651 OpcodeTablePtr = &RegOp2MemOpTable1;
3652 } else if (i == 2) {
3653 OpcodeTablePtr = &RegOp2MemOpTable2;
3654 } else if (i == 3) {
3655 OpcodeTablePtr = &RegOp2MemOpTable3;
3658 // If table selected...
3659 if (OpcodeTablePtr) {
3660 // Find the Opcode to fuse
3661 DenseMap<unsigned, std::pair<unsigned,unsigned> >::const_iterator I =
3662 OpcodeTablePtr->find(MI->getOpcode());
3663 if (I != OpcodeTablePtr->end()) {
3664 unsigned Opcode = I->second.first;
3665 unsigned MinAlign = (I->second.second & TB_ALIGN_MASK) >> TB_ALIGN_SHIFT;
3666 if (Align < MinAlign)
3668 bool NarrowToMOV32rm = false;
3670 unsigned RCSize = getRegClass(MI->getDesc(), i, &RI, MF)->getSize();
3671 if (Size < RCSize) {
3672 // Check if it's safe to fold the load. If the size of the object is
3673 // narrower than the load width, then it's not.
3674 if (Opcode != X86::MOV64rm || RCSize != 8 || Size != 4)
3676 // If this is a 64-bit load, but the spill slot is 32, then we can do
3677 // a 32-bit load which is implicitly zero-extended. This likely is due
3678 // to liveintervalanalysis remat'ing a load from stack slot.
3679 if (MI->getOperand(0).getSubReg() || MI->getOperand(1).getSubReg())
3681 Opcode = X86::MOV32rm;
3682 NarrowToMOV32rm = true;
3687 NewMI = FuseTwoAddrInst(MF, Opcode, MOs, MI, *this);
3689 NewMI = FuseInst(MF, Opcode, i, MOs, MI, *this);
3691 if (NarrowToMOV32rm) {
3692 // If this is the special case where we use a MOV32rm to load a 32-bit
3693 // value and zero-extend the top bits. Change the destination register
3695 unsigned DstReg = NewMI->getOperand(0).getReg();
3696 if (TargetRegisterInfo::isPhysicalRegister(DstReg))
3697 NewMI->getOperand(0).setReg(RI.getSubReg(DstReg,
3700 NewMI->getOperand(0).setSubReg(X86::sub_32bit);
3707 if (PrintFailedFusing && !MI->isCopy())
3708 dbgs() << "We failed to fuse operand " << i << " in " << *MI;
3712 /// hasPartialRegUpdate - Return true for all instructions that only update
3713 /// the first 32 or 64-bits of the destination register and leave the rest
3714 /// unmodified. This can be used to avoid folding loads if the instructions
3715 /// only update part of the destination register, and the non-updated part is
3716 /// not needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these
3717 /// instructions breaks the partial register dependency and it can improve
3718 /// performance. e.g.:
3720 /// movss (%rdi), %xmm0
3721 /// cvtss2sd %xmm0, %xmm0
3724 /// cvtss2sd (%rdi), %xmm0
3726 /// FIXME: This should be turned into a TSFlags.
3728 static bool hasPartialRegUpdate(unsigned Opcode) {
3730 case X86::CVTSI2SSrr:
3731 case X86::CVTSI2SS64rr:
3732 case X86::CVTSI2SDrr:
3733 case X86::CVTSI2SD64rr:
3734 case X86::CVTSD2SSrr:
3735 case X86::Int_CVTSD2SSrr:
3736 case X86::CVTSS2SDrr:
3737 case X86::Int_CVTSS2SDrr:
3739 case X86::RCPSSr_Int:
3741 case X86::ROUNDSDr_Int:
3743 case X86::ROUNDSSr_Int:
3745 case X86::RSQRTSSr_Int:
3747 case X86::SQRTSSr_Int:
3748 // AVX encoded versions
3749 case X86::VCVTSD2SSrr:
3750 case X86::Int_VCVTSD2SSrr:
3751 case X86::VCVTSS2SDrr:
3752 case X86::Int_VCVTSS2SDrr:
3754 case X86::VROUNDSDr:
3755 case X86::VROUNDSDr_Int:
3756 case X86::VROUNDSSr:
3757 case X86::VROUNDSSr_Int:
3758 case X86::VRSQRTSSr:
3766 /// getPartialRegUpdateClearance - Inform the ExeDepsFix pass how many idle
3767 /// instructions we would like before a partial register update.
3768 unsigned X86InstrInfo::
3769 getPartialRegUpdateClearance(const MachineInstr *MI, unsigned OpNum,
3770 const TargetRegisterInfo *TRI) const {
3771 if (OpNum != 0 || !hasPartialRegUpdate(MI->getOpcode()))
3774 // If MI is marked as reading Reg, the partial register update is wanted.
3775 const MachineOperand &MO = MI->getOperand(0);
3776 unsigned Reg = MO.getReg();
3777 if (TargetRegisterInfo::isVirtualRegister(Reg)) {
3778 if (MO.readsReg() || MI->readsVirtualRegister(Reg))
3781 if (MI->readsRegister(Reg, TRI))
3785 // If any of the preceding 16 instructions are reading Reg, insert a
3786 // dependency breaking instruction. The magic number is based on a few
3787 // Nehalem experiments.
3792 breakPartialRegDependency(MachineBasicBlock::iterator MI, unsigned OpNum,
3793 const TargetRegisterInfo *TRI) const {
3794 unsigned Reg = MI->getOperand(OpNum).getReg();
3795 if (X86::VR128RegClass.contains(Reg)) {
3796 // These instructions are all floating point domain, so xorps is the best
3798 bool HasAVX = TM.getSubtarget<X86Subtarget>().hasAVX();
3799 unsigned Opc = HasAVX ? X86::VXORPSrr : X86::XORPSrr;
3800 BuildMI(*MI->getParent(), MI, MI->getDebugLoc(), get(Opc), Reg)
3801 .addReg(Reg, RegState::Undef).addReg(Reg, RegState::Undef);
3802 } else if (X86::VR256RegClass.contains(Reg)) {
3803 // Use vxorps to clear the full ymm register.
3804 // It wants to read and write the xmm sub-register.
3805 unsigned XReg = TRI->getSubReg(Reg, X86::sub_xmm);
3806 BuildMI(*MI->getParent(), MI, MI->getDebugLoc(), get(X86::VXORPSrr), XReg)
3807 .addReg(XReg, RegState::Undef).addReg(XReg, RegState::Undef)
3808 .addReg(Reg, RegState::ImplicitDefine);
3811 MI->addRegisterKilled(Reg, TRI, true);
3814 MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
3816 const SmallVectorImpl<unsigned> &Ops,
3817 int FrameIndex) const {
3818 // Check switch flag
3819 if (NoFusing) return NULL;
3821 // Unless optimizing for size, don't fold to avoid partial
3822 // register update stalls
3823 if (!MF.getFunction()->getFnAttributes().hasOptimizeForSizeAttr() &&
3824 hasPartialRegUpdate(MI->getOpcode()))
3827 const MachineFrameInfo *MFI = MF.getFrameInfo();
3828 unsigned Size = MFI->getObjectSize(FrameIndex);
3829 unsigned Alignment = MFI->getObjectAlignment(FrameIndex);
3830 if (Ops.size() == 2 && Ops[0] == 0 && Ops[1] == 1) {
3831 unsigned NewOpc = 0;
3832 unsigned RCSize = 0;
3833 switch (MI->getOpcode()) {
3834 default: return NULL;
3835 case X86::TEST8rr: NewOpc = X86::CMP8ri; RCSize = 1; break;
3836 case X86::TEST16rr: NewOpc = X86::CMP16ri8; RCSize = 2; break;
3837 case X86::TEST32rr: NewOpc = X86::CMP32ri8; RCSize = 4; break;
3838 case X86::TEST64rr: NewOpc = X86::CMP64ri8; RCSize = 8; break;
3840 // Check if it's safe to fold the load. If the size of the object is
3841 // narrower than the load width, then it's not.
3844 // Change to CMPXXri r, 0 first.
3845 MI->setDesc(get(NewOpc));
3846 MI->getOperand(1).ChangeToImmediate(0);
3847 } else if (Ops.size() != 1)
3850 SmallVector<MachineOperand,4> MOs;
3851 MOs.push_back(MachineOperand::CreateFI(FrameIndex));
3852 return foldMemoryOperandImpl(MF, MI, Ops[0], MOs, Size, Alignment);
3855 MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
3857 const SmallVectorImpl<unsigned> &Ops,
3858 MachineInstr *LoadMI) const {
3859 // Check switch flag
3860 if (NoFusing) return NULL;
3862 // Unless optimizing for size, don't fold to avoid partial
3863 // register update stalls
3864 if (!MF.getFunction()->getFnAttributes().hasOptimizeForSizeAttr() &&
3865 hasPartialRegUpdate(MI->getOpcode()))
3868 // Determine the alignment of the load.
3869 unsigned Alignment = 0;
3870 if (LoadMI->hasOneMemOperand())
3871 Alignment = (*LoadMI->memoperands_begin())->getAlignment();
3873 switch (LoadMI->getOpcode()) {
3874 case X86::AVX2_SETALLONES:
3879 case X86::V_SETALLONES:
3891 if (Ops.size() == 2 && Ops[0] == 0 && Ops[1] == 1) {
3892 unsigned NewOpc = 0;
3893 switch (MI->getOpcode()) {
3894 default: return NULL;
3895 case X86::TEST8rr: NewOpc = X86::CMP8ri; break;
3896 case X86::TEST16rr: NewOpc = X86::CMP16ri8; break;
3897 case X86::TEST32rr: NewOpc = X86::CMP32ri8; break;
3898 case X86::TEST64rr: NewOpc = X86::CMP64ri8; break;
3900 // Change to CMPXXri r, 0 first.
3901 MI->setDesc(get(NewOpc));
3902 MI->getOperand(1).ChangeToImmediate(0);
3903 } else if (Ops.size() != 1)
3906 // Make sure the subregisters match.
3907 // Otherwise we risk changing the size of the load.
3908 if (LoadMI->getOperand(0).getSubReg() != MI->getOperand(Ops[0]).getSubReg())
3911 SmallVector<MachineOperand,X86::AddrNumOperands> MOs;
3912 switch (LoadMI->getOpcode()) {
3914 case X86::V_SETALLONES:
3915 case X86::AVX2_SETALLONES:
3918 case X86::FsFLD0SS: {
3919 // Folding a V_SET0 or V_SETALLONES as a load, to ease register pressure.
3920 // Create a constant-pool entry and operands to load from it.
3922 // Medium and large mode can't fold loads this way.
3923 if (TM.getCodeModel() != CodeModel::Small &&
3924 TM.getCodeModel() != CodeModel::Kernel)
3927 // x86-32 PIC requires a PIC base register for constant pools.
3928 unsigned PICBase = 0;
3929 if (TM.getRelocationModel() == Reloc::PIC_) {
3930 if (TM.getSubtarget<X86Subtarget>().is64Bit())
3933 // FIXME: PICBase = getGlobalBaseReg(&MF);
3934 // This doesn't work for several reasons.
3935 // 1. GlobalBaseReg may have been spilled.
3936 // 2. It may not be live at MI.
3940 // Create a constant-pool entry.
3941 MachineConstantPool &MCP = *MF.getConstantPool();
3943 unsigned Opc = LoadMI->getOpcode();
3944 if (Opc == X86::FsFLD0SS)
3945 Ty = Type::getFloatTy(MF.getFunction()->getContext());
3946 else if (Opc == X86::FsFLD0SD)
3947 Ty = Type::getDoubleTy(MF.getFunction()->getContext());
3948 else if (Opc == X86::AVX2_SETALLONES || Opc == X86::AVX_SET0)
3949 Ty = VectorType::get(Type::getInt32Ty(MF.getFunction()->getContext()), 8);
3951 Ty = VectorType::get(Type::getInt32Ty(MF.getFunction()->getContext()), 4);
3953 bool IsAllOnes = (Opc == X86::V_SETALLONES || Opc == X86::AVX2_SETALLONES);
3954 const Constant *C = IsAllOnes ? Constant::getAllOnesValue(Ty) :
3955 Constant::getNullValue(Ty);
3956 unsigned CPI = MCP.getConstantPoolIndex(C, Alignment);
3958 // Create operands to load from the constant pool entry.
3959 MOs.push_back(MachineOperand::CreateReg(PICBase, false));
3960 MOs.push_back(MachineOperand::CreateImm(1));
3961 MOs.push_back(MachineOperand::CreateReg(0, false));
3962 MOs.push_back(MachineOperand::CreateCPI(CPI, 0));
3963 MOs.push_back(MachineOperand::CreateReg(0, false));
3967 // Folding a normal load. Just copy the load's address operands.
3968 unsigned NumOps = LoadMI->getDesc().getNumOperands();
3969 for (unsigned i = NumOps - X86::AddrNumOperands; i != NumOps; ++i)
3970 MOs.push_back(LoadMI->getOperand(i));
3974 return foldMemoryOperandImpl(MF, MI, Ops[0], MOs, 0, Alignment);
3978 bool X86InstrInfo::canFoldMemoryOperand(const MachineInstr *MI,
3979 const SmallVectorImpl<unsigned> &Ops) const {
3980 // Check switch flag
3981 if (NoFusing) return 0;
3983 if (Ops.size() == 2 && Ops[0] == 0 && Ops[1] == 1) {
3984 switch (MI->getOpcode()) {
3985 default: return false;
3992 // FIXME: AsmPrinter doesn't know how to handle
3993 // X86II::MO_GOT_ABSOLUTE_ADDRESS after folding.
3994 if (MI->getOperand(2).getTargetFlags() == X86II::MO_GOT_ABSOLUTE_ADDRESS)
4000 if (Ops.size() != 1)
4003 unsigned OpNum = Ops[0];
4004 unsigned Opc = MI->getOpcode();
4005 unsigned NumOps = MI->getDesc().getNumOperands();
4006 bool isTwoAddr = NumOps > 1 &&
4007 MI->getDesc().getOperandConstraint(1, MCOI::TIED_TO) != -1;
4009 // Folding a memory location into the two-address part of a two-address
4010 // instruction is different than folding it other places. It requires
4011 // replacing the *two* registers with the memory location.
4012 const DenseMap<unsigned, std::pair<unsigned,unsigned> > *OpcodeTablePtr = 0;
4013 if (isTwoAddr && NumOps >= 2 && OpNum < 2) {
4014 OpcodeTablePtr = &RegOp2MemOpTable2Addr;
4015 } else if (OpNum == 0) { // If operand 0
4020 case X86::MOV64r0: return true;
4023 OpcodeTablePtr = &RegOp2MemOpTable0;
4024 } else if (OpNum == 1) {
4025 OpcodeTablePtr = &RegOp2MemOpTable1;
4026 } else if (OpNum == 2) {
4027 OpcodeTablePtr = &RegOp2MemOpTable2;
4028 } else if (OpNum == 3) {
4029 OpcodeTablePtr = &RegOp2MemOpTable3;
4032 if (OpcodeTablePtr && OpcodeTablePtr->count(Opc))
4034 return TargetInstrInfoImpl::canFoldMemoryOperand(MI, Ops);
4037 bool X86InstrInfo::unfoldMemoryOperand(MachineFunction &MF, MachineInstr *MI,
4038 unsigned Reg, bool UnfoldLoad, bool UnfoldStore,
4039 SmallVectorImpl<MachineInstr*> &NewMIs) const {
4040 DenseMap<unsigned, std::pair<unsigned,unsigned> >::const_iterator I =
4041 MemOp2RegOpTable.find(MI->getOpcode());
4042 if (I == MemOp2RegOpTable.end())
4044 unsigned Opc = I->second.first;
4045 unsigned Index = I->second.second & TB_INDEX_MASK;
4046 bool FoldedLoad = I->second.second & TB_FOLDED_LOAD;
4047 bool FoldedStore = I->second.second & TB_FOLDED_STORE;
4048 if (UnfoldLoad && !FoldedLoad)
4050 UnfoldLoad &= FoldedLoad;
4051 if (UnfoldStore && !FoldedStore)
4053 UnfoldStore &= FoldedStore;
4055 const MCInstrDesc &MCID = get(Opc);
4056 const TargetRegisterClass *RC = getRegClass(MCID, Index, &RI, MF);
4057 if (!MI->hasOneMemOperand() &&
4058 RC == &X86::VR128RegClass &&
4059 !TM.getSubtarget<X86Subtarget>().isUnalignedMemAccessFast())
4060 // Without memoperands, loadRegFromAddr and storeRegToStackSlot will
4061 // conservatively assume the address is unaligned. That's bad for
4064 SmallVector<MachineOperand, X86::AddrNumOperands> AddrOps;
4065 SmallVector<MachineOperand,2> BeforeOps;
4066 SmallVector<MachineOperand,2> AfterOps;
4067 SmallVector<MachineOperand,4> ImpOps;
4068 for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
4069 MachineOperand &Op = MI->getOperand(i);
4070 if (i >= Index && i < Index + X86::AddrNumOperands)
4071 AddrOps.push_back(Op);
4072 else if (Op.isReg() && Op.isImplicit())
4073 ImpOps.push_back(Op);
4075 BeforeOps.push_back(Op);
4077 AfterOps.push_back(Op);
4080 // Emit the load instruction.
4082 std::pair<MachineInstr::mmo_iterator,
4083 MachineInstr::mmo_iterator> MMOs =
4084 MF.extractLoadMemRefs(MI->memoperands_begin(),
4085 MI->memoperands_end());
4086 loadRegFromAddr(MF, Reg, AddrOps, RC, MMOs.first, MMOs.second, NewMIs);
4088 // Address operands cannot be marked isKill.
4089 for (unsigned i = 1; i != 1 + X86::AddrNumOperands; ++i) {
4090 MachineOperand &MO = NewMIs[0]->getOperand(i);
4092 MO.setIsKill(false);
4097 // Emit the data processing instruction.
4098 MachineInstr *DataMI = MF.CreateMachineInstr(MCID, MI->getDebugLoc(), true);
4099 MachineInstrBuilder MIB(DataMI);
4102 MIB.addReg(Reg, RegState::Define);
4103 for (unsigned i = 0, e = BeforeOps.size(); i != e; ++i)
4104 MIB.addOperand(BeforeOps[i]);
4107 for (unsigned i = 0, e = AfterOps.size(); i != e; ++i)
4108 MIB.addOperand(AfterOps[i]);
4109 for (unsigned i = 0, e = ImpOps.size(); i != e; ++i) {
4110 MachineOperand &MO = ImpOps[i];
4111 MIB.addReg(MO.getReg(),
4112 getDefRegState(MO.isDef()) |
4113 RegState::Implicit |
4114 getKillRegState(MO.isKill()) |
4115 getDeadRegState(MO.isDead()) |
4116 getUndefRegState(MO.isUndef()));
4118 // Change CMP32ri r, 0 back to TEST32rr r, r, etc.
4119 switch (DataMI->getOpcode()) {
4121 case X86::CMP64ri32:
4128 MachineOperand &MO0 = DataMI->getOperand(0);
4129 MachineOperand &MO1 = DataMI->getOperand(1);
4130 if (MO1.getImm() == 0) {
4132 switch (DataMI->getOpcode()) {
4133 default: llvm_unreachable("Unreachable!");
4135 case X86::CMP64ri32: NewOpc = X86::TEST64rr; break;
4137 case X86::CMP32ri: NewOpc = X86::TEST32rr; break;
4139 case X86::CMP16ri: NewOpc = X86::TEST16rr; break;
4140 case X86::CMP8ri: NewOpc = X86::TEST8rr; break;
4142 DataMI->setDesc(get(NewOpc));
4143 MO1.ChangeToRegister(MO0.getReg(), false);
4147 NewMIs.push_back(DataMI);
4149 // Emit the store instruction.
4151 const TargetRegisterClass *DstRC = getRegClass(MCID, 0, &RI, MF);
4152 std::pair<MachineInstr::mmo_iterator,
4153 MachineInstr::mmo_iterator> MMOs =
4154 MF.extractStoreMemRefs(MI->memoperands_begin(),
4155 MI->memoperands_end());
4156 storeRegToAddr(MF, Reg, true, AddrOps, DstRC, MMOs.first, MMOs.second, NewMIs);
4163 X86InstrInfo::unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N,
4164 SmallVectorImpl<SDNode*> &NewNodes) const {
4165 if (!N->isMachineOpcode())
4168 DenseMap<unsigned, std::pair<unsigned,unsigned> >::const_iterator I =
4169 MemOp2RegOpTable.find(N->getMachineOpcode());
4170 if (I == MemOp2RegOpTable.end())
4172 unsigned Opc = I->second.first;
4173 unsigned Index = I->second.second & TB_INDEX_MASK;
4174 bool FoldedLoad = I->second.second & TB_FOLDED_LOAD;
4175 bool FoldedStore = I->second.second & TB_FOLDED_STORE;
4176 const MCInstrDesc &MCID = get(Opc);
4177 MachineFunction &MF = DAG.getMachineFunction();
4178 const TargetRegisterClass *RC = getRegClass(MCID, Index, &RI, MF);
4179 unsigned NumDefs = MCID.NumDefs;
4180 std::vector<SDValue> AddrOps;
4181 std::vector<SDValue> BeforeOps;
4182 std::vector<SDValue> AfterOps;
4183 DebugLoc dl = N->getDebugLoc();
4184 unsigned NumOps = N->getNumOperands();
4185 for (unsigned i = 0; i != NumOps-1; ++i) {
4186 SDValue Op = N->getOperand(i);
4187 if (i >= Index-NumDefs && i < Index-NumDefs + X86::AddrNumOperands)
4188 AddrOps.push_back(Op);
4189 else if (i < Index-NumDefs)
4190 BeforeOps.push_back(Op);
4191 else if (i > Index-NumDefs)
4192 AfterOps.push_back(Op);
4194 SDValue Chain = N->getOperand(NumOps-1);
4195 AddrOps.push_back(Chain);
4197 // Emit the load instruction.
4200 EVT VT = *RC->vt_begin();
4201 std::pair<MachineInstr::mmo_iterator,
4202 MachineInstr::mmo_iterator> MMOs =
4203 MF.extractLoadMemRefs(cast<MachineSDNode>(N)->memoperands_begin(),
4204 cast<MachineSDNode>(N)->memoperands_end());
4205 if (!(*MMOs.first) &&
4206 RC == &X86::VR128RegClass &&
4207 !TM.getSubtarget<X86Subtarget>().isUnalignedMemAccessFast())
4208 // Do not introduce a slow unaligned load.
4210 unsigned Alignment = RC->getSize() == 32 ? 32 : 16;
4211 bool isAligned = (*MMOs.first) &&
4212 (*MMOs.first)->getAlignment() >= Alignment;
4213 Load = DAG.getMachineNode(getLoadRegOpcode(0, RC, isAligned, TM), dl,
4214 VT, MVT::Other, &AddrOps[0], AddrOps.size());
4215 NewNodes.push_back(Load);
4217 // Preserve memory reference information.
4218 cast<MachineSDNode>(Load)->setMemRefs(MMOs.first, MMOs.second);
4221 // Emit the data processing instruction.
4222 std::vector<EVT> VTs;
4223 const TargetRegisterClass *DstRC = 0;
4224 if (MCID.getNumDefs() > 0) {
4225 DstRC = getRegClass(MCID, 0, &RI, MF);
4226 VTs.push_back(*DstRC->vt_begin());
4228 for (unsigned i = 0, e = N->getNumValues(); i != e; ++i) {
4229 EVT VT = N->getValueType(i);
4230 if (VT != MVT::Other && i >= (unsigned)MCID.getNumDefs())
4234 BeforeOps.push_back(SDValue(Load, 0));
4235 std::copy(AfterOps.begin(), AfterOps.end(), std::back_inserter(BeforeOps));
4236 SDNode *NewNode= DAG.getMachineNode(Opc, dl, VTs, &BeforeOps[0],
4238 NewNodes.push_back(NewNode);
4240 // Emit the store instruction.
4243 AddrOps.push_back(SDValue(NewNode, 0));
4244 AddrOps.push_back(Chain);
4245 std::pair<MachineInstr::mmo_iterator,
4246 MachineInstr::mmo_iterator> MMOs =
4247 MF.extractStoreMemRefs(cast<MachineSDNode>(N)->memoperands_begin(),
4248 cast<MachineSDNode>(N)->memoperands_end());
4249 if (!(*MMOs.first) &&
4250 RC == &X86::VR128RegClass &&
4251 !TM.getSubtarget<X86Subtarget>().isUnalignedMemAccessFast())
4252 // Do not introduce a slow unaligned store.
4254 unsigned Alignment = RC->getSize() == 32 ? 32 : 16;
4255 bool isAligned = (*MMOs.first) &&
4256 (*MMOs.first)->getAlignment() >= Alignment;
4257 SDNode *Store = DAG.getMachineNode(getStoreRegOpcode(0, DstRC,
4260 &AddrOps[0], AddrOps.size());
4261 NewNodes.push_back(Store);
4263 // Preserve memory reference information.
4264 cast<MachineSDNode>(Load)->setMemRefs(MMOs.first, MMOs.second);
4270 unsigned X86InstrInfo::getOpcodeAfterMemoryUnfold(unsigned Opc,
4271 bool UnfoldLoad, bool UnfoldStore,
4272 unsigned *LoadRegIndex) const {
4273 DenseMap<unsigned, std::pair<unsigned,unsigned> >::const_iterator I =
4274 MemOp2RegOpTable.find(Opc);
4275 if (I == MemOp2RegOpTable.end())
4277 bool FoldedLoad = I->second.second & TB_FOLDED_LOAD;
4278 bool FoldedStore = I->second.second & TB_FOLDED_STORE;
4279 if (UnfoldLoad && !FoldedLoad)
4281 if (UnfoldStore && !FoldedStore)
4284 *LoadRegIndex = I->second.second & TB_INDEX_MASK;
4285 return I->second.first;
4289 X86InstrInfo::areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
4290 int64_t &Offset1, int64_t &Offset2) const {
4291 if (!Load1->isMachineOpcode() || !Load2->isMachineOpcode())
4293 unsigned Opc1 = Load1->getMachineOpcode();
4294 unsigned Opc2 = Load2->getMachineOpcode();
4296 default: return false;
4306 case X86::MMX_MOVD64rm:
4307 case X86::MMX_MOVQ64rm:
4308 case X86::FsMOVAPSrm:
4309 case X86::FsMOVAPDrm:
4315 // AVX load instructions
4318 case X86::FsVMOVAPSrm:
4319 case X86::FsVMOVAPDrm:
4320 case X86::VMOVAPSrm:
4321 case X86::VMOVUPSrm:
4322 case X86::VMOVAPDrm:
4323 case X86::VMOVDQArm:
4324 case X86::VMOVDQUrm:
4325 case X86::VMOVAPSYrm:
4326 case X86::VMOVUPSYrm:
4327 case X86::VMOVAPDYrm:
4328 case X86::VMOVDQAYrm:
4329 case X86::VMOVDQUYrm:
4333 default: return false;
4343 case X86::MMX_MOVD64rm:
4344 case X86::MMX_MOVQ64rm:
4345 case X86::FsMOVAPSrm:
4346 case X86::FsMOVAPDrm:
4352 // AVX load instructions
4355 case X86::FsVMOVAPSrm:
4356 case X86::FsVMOVAPDrm:
4357 case X86::VMOVAPSrm:
4358 case X86::VMOVUPSrm:
4359 case X86::VMOVAPDrm:
4360 case X86::VMOVDQArm:
4361 case X86::VMOVDQUrm:
4362 case X86::VMOVAPSYrm:
4363 case X86::VMOVUPSYrm:
4364 case X86::VMOVAPDYrm:
4365 case X86::VMOVDQAYrm:
4366 case X86::VMOVDQUYrm:
4370 // Check if chain operands and base addresses match.
4371 if (Load1->getOperand(0) != Load2->getOperand(0) ||
4372 Load1->getOperand(5) != Load2->getOperand(5))
4374 // Segment operands should match as well.
4375 if (Load1->getOperand(4) != Load2->getOperand(4))
4377 // Scale should be 1, Index should be Reg0.
4378 if (Load1->getOperand(1) == Load2->getOperand(1) &&
4379 Load1->getOperand(2) == Load2->getOperand(2)) {
4380 if (cast<ConstantSDNode>(Load1->getOperand(1))->getZExtValue() != 1)
4383 // Now let's examine the displacements.
4384 if (isa<ConstantSDNode>(Load1->getOperand(3)) &&
4385 isa<ConstantSDNode>(Load2->getOperand(3))) {
4386 Offset1 = cast<ConstantSDNode>(Load1->getOperand(3))->getSExtValue();
4387 Offset2 = cast<ConstantSDNode>(Load2->getOperand(3))->getSExtValue();
4394 bool X86InstrInfo::shouldScheduleLoadsNear(SDNode *Load1, SDNode *Load2,
4395 int64_t Offset1, int64_t Offset2,
4396 unsigned NumLoads) const {
4397 assert(Offset2 > Offset1);
4398 if ((Offset2 - Offset1) / 8 > 64)
4401 unsigned Opc1 = Load1->getMachineOpcode();
4402 unsigned Opc2 = Load2->getMachineOpcode();
4404 return false; // FIXME: overly conservative?
4411 case X86::MMX_MOVD64rm:
4412 case X86::MMX_MOVQ64rm:
4416 EVT VT = Load1->getValueType(0);
4417 switch (VT.getSimpleVT().SimpleTy) {
4419 // XMM registers. In 64-bit mode we can be a bit more aggressive since we
4420 // have 16 of them to play with.
4421 if (TM.getSubtargetImpl()->is64Bit()) {
4424 } else if (NumLoads) {
4444 ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
4445 assert(Cond.size() == 1 && "Invalid X86 branch condition!");
4446 X86::CondCode CC = static_cast<X86::CondCode>(Cond[0].getImm());
4447 if (CC == X86::COND_NE_OR_P || CC == X86::COND_NP_OR_E)
4449 Cond[0].setImm(GetOppositeBranchCondition(CC));
4454 isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const {
4455 // FIXME: Return false for x87 stack register classes for now. We can't
4456 // allow any loads of these registers before FpGet_ST0_80.
4457 return !(RC == &X86::CCRRegClass || RC == &X86::RFP32RegClass ||
4458 RC == &X86::RFP64RegClass || RC == &X86::RFP80RegClass);
4461 /// getGlobalBaseReg - Return a virtual register initialized with the
4462 /// the global base register value. Output instructions required to
4463 /// initialize the register in the function entry block, if necessary.
4465 /// TODO: Eliminate this and move the code to X86MachineFunctionInfo.
4467 unsigned X86InstrInfo::getGlobalBaseReg(MachineFunction *MF) const {
4468 assert(!TM.getSubtarget<X86Subtarget>().is64Bit() &&
4469 "X86-64 PIC uses RIP relative addressing");
4471 X86MachineFunctionInfo *X86FI = MF->getInfo<X86MachineFunctionInfo>();
4472 unsigned GlobalBaseReg = X86FI->getGlobalBaseReg();
4473 if (GlobalBaseReg != 0)
4474 return GlobalBaseReg;
4476 // Create the register. The code to initialize it is inserted
4477 // later, by the CGBR pass (below).
4478 MachineRegisterInfo &RegInfo = MF->getRegInfo();
4479 GlobalBaseReg = RegInfo.createVirtualRegister(&X86::GR32_NOSPRegClass);
4480 X86FI->setGlobalBaseReg(GlobalBaseReg);
4481 return GlobalBaseReg;
4484 // These are the replaceable SSE instructions. Some of these have Int variants
4485 // that we don't include here. We don't want to replace instructions selected
4487 static const uint16_t ReplaceableInstrs[][3] = {
4488 //PackedSingle PackedDouble PackedInt
4489 { X86::MOVAPSmr, X86::MOVAPDmr, X86::MOVDQAmr },
4490 { X86::MOVAPSrm, X86::MOVAPDrm, X86::MOVDQArm },
4491 { X86::MOVAPSrr, X86::MOVAPDrr, X86::MOVDQArr },
4492 { X86::MOVUPSmr, X86::MOVUPDmr, X86::MOVDQUmr },
4493 { X86::MOVUPSrm, X86::MOVUPDrm, X86::MOVDQUrm },
4494 { X86::MOVNTPSmr, X86::MOVNTPDmr, X86::MOVNTDQmr },
4495 { X86::ANDNPSrm, X86::ANDNPDrm, X86::PANDNrm },
4496 { X86::ANDNPSrr, X86::ANDNPDrr, X86::PANDNrr },
4497 { X86::ANDPSrm, X86::ANDPDrm, X86::PANDrm },
4498 { X86::ANDPSrr, X86::ANDPDrr, X86::PANDrr },
4499 { X86::ORPSrm, X86::ORPDrm, X86::PORrm },
4500 { X86::ORPSrr, X86::ORPDrr, X86::PORrr },
4501 { X86::XORPSrm, X86::XORPDrm, X86::PXORrm },
4502 { X86::XORPSrr, X86::XORPDrr, X86::PXORrr },
4503 // AVX 128-bit support
4504 { X86::VMOVAPSmr, X86::VMOVAPDmr, X86::VMOVDQAmr },
4505 { X86::VMOVAPSrm, X86::VMOVAPDrm, X86::VMOVDQArm },
4506 { X86::VMOVAPSrr, X86::VMOVAPDrr, X86::VMOVDQArr },
4507 { X86::VMOVUPSmr, X86::VMOVUPDmr, X86::VMOVDQUmr },
4508 { X86::VMOVUPSrm, X86::VMOVUPDrm, X86::VMOVDQUrm },
4509 { X86::VMOVNTPSmr, X86::VMOVNTPDmr, X86::VMOVNTDQmr },
4510 { X86::VANDNPSrm, X86::VANDNPDrm, X86::VPANDNrm },
4511 { X86::VANDNPSrr, X86::VANDNPDrr, X86::VPANDNrr },
4512 { X86::VANDPSrm, X86::VANDPDrm, X86::VPANDrm },
4513 { X86::VANDPSrr, X86::VANDPDrr, X86::VPANDrr },
4514 { X86::VORPSrm, X86::VORPDrm, X86::VPORrm },
4515 { X86::VORPSrr, X86::VORPDrr, X86::VPORrr },
4516 { X86::VXORPSrm, X86::VXORPDrm, X86::VPXORrm },
4517 { X86::VXORPSrr, X86::VXORPDrr, X86::VPXORrr },
4518 // AVX 256-bit support
4519 { X86::VMOVAPSYmr, X86::VMOVAPDYmr, X86::VMOVDQAYmr },
4520 { X86::VMOVAPSYrm, X86::VMOVAPDYrm, X86::VMOVDQAYrm },
4521 { X86::VMOVAPSYrr, X86::VMOVAPDYrr, X86::VMOVDQAYrr },
4522 { X86::VMOVUPSYmr, X86::VMOVUPDYmr, X86::VMOVDQUYmr },
4523 { X86::VMOVUPSYrm, X86::VMOVUPDYrm, X86::VMOVDQUYrm },
4524 { X86::VMOVNTPSYmr, X86::VMOVNTPDYmr, X86::VMOVNTDQYmr }
4527 static const uint16_t ReplaceableInstrsAVX2[][3] = {
4528 //PackedSingle PackedDouble PackedInt
4529 { X86::VANDNPSYrm, X86::VANDNPDYrm, X86::VPANDNYrm },
4530 { X86::VANDNPSYrr, X86::VANDNPDYrr, X86::VPANDNYrr },
4531 { X86::VANDPSYrm, X86::VANDPDYrm, X86::VPANDYrm },
4532 { X86::VANDPSYrr, X86::VANDPDYrr, X86::VPANDYrr },
4533 { X86::VORPSYrm, X86::VORPDYrm, X86::VPORYrm },
4534 { X86::VORPSYrr, X86::VORPDYrr, X86::VPORYrr },
4535 { X86::VXORPSYrm, X86::VXORPDYrm, X86::VPXORYrm },
4536 { X86::VXORPSYrr, X86::VXORPDYrr, X86::VPXORYrr },
4537 { X86::VEXTRACTF128mr, X86::VEXTRACTF128mr, X86::VEXTRACTI128mr },
4538 { X86::VEXTRACTF128rr, X86::VEXTRACTF128rr, X86::VEXTRACTI128rr },
4539 { X86::VINSERTF128rm, X86::VINSERTF128rm, X86::VINSERTI128rm },
4540 { X86::VINSERTF128rr, X86::VINSERTF128rr, X86::VINSERTI128rr },
4541 { X86::VPERM2F128rm, X86::VPERM2F128rm, X86::VPERM2I128rm },
4542 { X86::VPERM2F128rr, X86::VPERM2F128rr, X86::VPERM2I128rr }
4545 // FIXME: Some shuffle and unpack instructions have equivalents in different
4546 // domains, but they require a bit more work than just switching opcodes.
4548 static const uint16_t *lookup(unsigned opcode, unsigned domain) {
4549 for (unsigned i = 0, e = array_lengthof(ReplaceableInstrs); i != e; ++i)
4550 if (ReplaceableInstrs[i][domain-1] == opcode)
4551 return ReplaceableInstrs[i];
4555 static const uint16_t *lookupAVX2(unsigned opcode, unsigned domain) {
4556 for (unsigned i = 0, e = array_lengthof(ReplaceableInstrsAVX2); i != e; ++i)
4557 if (ReplaceableInstrsAVX2[i][domain-1] == opcode)
4558 return ReplaceableInstrsAVX2[i];
4562 std::pair<uint16_t, uint16_t>
4563 X86InstrInfo::getExecutionDomain(const MachineInstr *MI) const {
4564 uint16_t domain = (MI->getDesc().TSFlags >> X86II::SSEDomainShift) & 3;
4565 bool hasAVX2 = TM.getSubtarget<X86Subtarget>().hasAVX2();
4566 uint16_t validDomains = 0;
4567 if (domain && lookup(MI->getOpcode(), domain))
4569 else if (domain && lookupAVX2(MI->getOpcode(), domain))
4570 validDomains = hasAVX2 ? 0xe : 0x6;
4571 return std::make_pair(domain, validDomains);
4574 void X86InstrInfo::setExecutionDomain(MachineInstr *MI, unsigned Domain) const {
4575 assert(Domain>0 && Domain<4 && "Invalid execution domain");
4576 uint16_t dom = (MI->getDesc().TSFlags >> X86II::SSEDomainShift) & 3;
4577 assert(dom && "Not an SSE instruction");
4578 const uint16_t *table = lookup(MI->getOpcode(), dom);
4579 if (!table) { // try the other table
4580 assert((TM.getSubtarget<X86Subtarget>().hasAVX2() || Domain < 3) &&
4581 "256-bit vector operations only available in AVX2");
4582 table = lookupAVX2(MI->getOpcode(), dom);
4584 assert(table && "Cannot change domain");
4585 MI->setDesc(get(table[Domain-1]));
4588 /// getNoopForMachoTarget - Return the noop instruction to use for a noop.
4589 void X86InstrInfo::getNoopForMachoTarget(MCInst &NopInst) const {
4590 NopInst.setOpcode(X86::NOOP);
4593 bool X86InstrInfo::isHighLatencyDef(int opc) const {
4595 default: return false;
4597 case X86::DIVSDrm_Int:
4599 case X86::DIVSDrr_Int:
4601 case X86::DIVSSrm_Int:
4603 case X86::DIVSSrr_Int:
4605 case X86::SQRTPDm_Int:
4607 case X86::SQRTPDr_Int:
4609 case X86::SQRTPSm_Int:
4611 case X86::SQRTPSr_Int:
4613 case X86::SQRTSDm_Int:
4615 case X86::SQRTSDr_Int:
4617 case X86::SQRTSSm_Int:
4619 case X86::SQRTSSr_Int:
4620 // AVX instructions with high latency
4622 case X86::VDIVSDrm_Int:
4624 case X86::VDIVSDrr_Int:
4626 case X86::VDIVSSrm_Int:
4628 case X86::VDIVSSrr_Int:
4630 case X86::VSQRTPDm_Int:
4632 case X86::VSQRTPDr_Int:
4634 case X86::VSQRTPSm_Int:
4636 case X86::VSQRTPSr_Int:
4638 case X86::VSQRTSDm_Int:
4641 case X86::VSQRTSSm_Int:
4648 hasHighOperandLatency(const InstrItineraryData *ItinData,
4649 const MachineRegisterInfo *MRI,
4650 const MachineInstr *DefMI, unsigned DefIdx,
4651 const MachineInstr *UseMI, unsigned UseIdx) const {
4652 return isHighLatencyDef(DefMI->getOpcode());
4656 /// CGBR - Create Global Base Reg pass. This initializes the PIC
4657 /// global base register for x86-32.
4658 struct CGBR : public MachineFunctionPass {
4660 CGBR() : MachineFunctionPass(ID) {}
4662 virtual bool runOnMachineFunction(MachineFunction &MF) {
4663 const X86TargetMachine *TM =
4664 static_cast<const X86TargetMachine *>(&MF.getTarget());
4666 assert(!TM->getSubtarget<X86Subtarget>().is64Bit() &&
4667 "X86-64 PIC uses RIP relative addressing");
4669 // Only emit a global base reg in PIC mode.
4670 if (TM->getRelocationModel() != Reloc::PIC_)
4673 X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
4674 unsigned GlobalBaseReg = X86FI->getGlobalBaseReg();
4676 // If we didn't need a GlobalBaseReg, don't insert code.
4677 if (GlobalBaseReg == 0)
4680 // Insert the set of GlobalBaseReg into the first MBB of the function
4681 MachineBasicBlock &FirstMBB = MF.front();
4682 MachineBasicBlock::iterator MBBI = FirstMBB.begin();
4683 DebugLoc DL = FirstMBB.findDebugLoc(MBBI);
4684 MachineRegisterInfo &RegInfo = MF.getRegInfo();
4685 const X86InstrInfo *TII = TM->getInstrInfo();
4688 if (TM->getSubtarget<X86Subtarget>().isPICStyleGOT())
4689 PC = RegInfo.createVirtualRegister(&X86::GR32RegClass);
4693 // Operand of MovePCtoStack is completely ignored by asm printer. It's
4694 // only used in JIT code emission as displacement to pc.
4695 BuildMI(FirstMBB, MBBI, DL, TII->get(X86::MOVPC32r), PC).addImm(0);
4697 // If we're using vanilla 'GOT' PIC style, we should use relative addressing
4698 // not to pc, but to _GLOBAL_OFFSET_TABLE_ external.
4699 if (TM->getSubtarget<X86Subtarget>().isPICStyleGOT()) {
4700 // Generate addl $__GLOBAL_OFFSET_TABLE_ + [.-piclabel], %some_register
4701 BuildMI(FirstMBB, MBBI, DL, TII->get(X86::ADD32ri), GlobalBaseReg)
4702 .addReg(PC).addExternalSymbol("_GLOBAL_OFFSET_TABLE_",
4703 X86II::MO_GOT_ABSOLUTE_ADDRESS);
4709 virtual const char *getPassName() const {
4710 return "X86 PIC Global Base Reg Initialization";
4713 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
4714 AU.setPreservesCFG();
4715 MachineFunctionPass::getAnalysisUsage(AU);
4722 llvm::createGlobalBaseRegPass() { return new CGBR(); }
4725 struct LDTLSCleanup : public MachineFunctionPass {
4727 LDTLSCleanup() : MachineFunctionPass(ID) {}
4729 virtual bool runOnMachineFunction(MachineFunction &MF) {
4730 X86MachineFunctionInfo* MFI = MF.getInfo<X86MachineFunctionInfo>();
4731 if (MFI->getNumLocalDynamicTLSAccesses() < 2) {
4732 // No point folding accesses if there isn't at least two.
4736 MachineDominatorTree *DT = &getAnalysis<MachineDominatorTree>();
4737 return VisitNode(DT->getRootNode(), 0);
4740 // Visit the dominator subtree rooted at Node in pre-order.
4741 // If TLSBaseAddrReg is non-null, then use that to replace any
4742 // TLS_base_addr instructions. Otherwise, create the register
4743 // when the first such instruction is seen, and then use it
4744 // as we encounter more instructions.
4745 bool VisitNode(MachineDomTreeNode *Node, unsigned TLSBaseAddrReg) {
4746 MachineBasicBlock *BB = Node->getBlock();
4747 bool Changed = false;
4749 // Traverse the current block.
4750 for (MachineBasicBlock::iterator I = BB->begin(), E = BB->end(); I != E;
4752 switch (I->getOpcode()) {
4753 case X86::TLS_base_addr32:
4754 case X86::TLS_base_addr64:
4756 I = ReplaceTLSBaseAddrCall(I, TLSBaseAddrReg);
4758 I = SetRegister(I, &TLSBaseAddrReg);
4766 // Visit the children of this block in the dominator tree.
4767 for (MachineDomTreeNode::iterator I = Node->begin(), E = Node->end();
4769 Changed |= VisitNode(*I, TLSBaseAddrReg);
4775 // Replace the TLS_base_addr instruction I with a copy from
4776 // TLSBaseAddrReg, returning the new instruction.
4777 MachineInstr *ReplaceTLSBaseAddrCall(MachineInstr *I,
4778 unsigned TLSBaseAddrReg) {
4779 MachineFunction *MF = I->getParent()->getParent();
4780 const X86TargetMachine *TM =
4781 static_cast<const X86TargetMachine *>(&MF->getTarget());
4782 const bool is64Bit = TM->getSubtarget<X86Subtarget>().is64Bit();
4783 const X86InstrInfo *TII = TM->getInstrInfo();
4785 // Insert a Copy from TLSBaseAddrReg to RAX/EAX.
4786 MachineInstr *Copy = BuildMI(*I->getParent(), I, I->getDebugLoc(),
4787 TII->get(TargetOpcode::COPY),
4788 is64Bit ? X86::RAX : X86::EAX)
4789 .addReg(TLSBaseAddrReg);
4791 // Erase the TLS_base_addr instruction.
4792 I->eraseFromParent();
4797 // Create a virtal register in *TLSBaseAddrReg, and populate it by
4798 // inserting a copy instruction after I. Returns the new instruction.
4799 MachineInstr *SetRegister(MachineInstr *I, unsigned *TLSBaseAddrReg) {
4800 MachineFunction *MF = I->getParent()->getParent();
4801 const X86TargetMachine *TM =
4802 static_cast<const X86TargetMachine *>(&MF->getTarget());
4803 const bool is64Bit = TM->getSubtarget<X86Subtarget>().is64Bit();
4804 const X86InstrInfo *TII = TM->getInstrInfo();
4806 // Create a virtual register for the TLS base address.
4807 MachineRegisterInfo &RegInfo = MF->getRegInfo();
4808 *TLSBaseAddrReg = RegInfo.createVirtualRegister(is64Bit
4809 ? &X86::GR64RegClass
4810 : &X86::GR32RegClass);
4812 // Insert a copy from RAX/EAX to TLSBaseAddrReg.
4813 MachineInstr *Next = I->getNextNode();
4814 MachineInstr *Copy = BuildMI(*I->getParent(), Next, I->getDebugLoc(),
4815 TII->get(TargetOpcode::COPY),
4817 .addReg(is64Bit ? X86::RAX : X86::EAX);
4822 virtual const char *getPassName() const {
4823 return "Local Dynamic TLS Access Clean-up";
4826 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
4827 AU.setPreservesCFG();
4828 AU.addRequired<MachineDominatorTree>();
4829 MachineFunctionPass::getAnalysisUsage(AU);
4834 char LDTLSCleanup::ID = 0;
4836 llvm::createCleanupLocalDynamicTLSPass() { return new LDTLSCleanup(); }
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