1 //===- MipsInstrInfo.td - Mips Register defs --------------*- tablegen -*-===//
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 //===---------------------------------------------------------------------===//
11 // Instruction format superclass
12 //===---------------------------------------------------------------------===//
14 include "MipsInstrFormats.td"
16 //===---------------------------------------------------------------------===//
17 // Mips profiles and nodes
18 //===---------------------------------------------------------------------===//
20 def SDT_MipsRet : SDTypeProfile<0, 1, [SDTCisInt<0>]>;
21 def SDT_MipsJmpLink : SDTypeProfile<0, 1, [SDTCisVT<0, iPTR>]>;
22 def SDT_MipsCMov : SDTypeProfile<1, 4, [SDTCisSameAs<0, 1>,
26 def SDT_MipsCallSeqStart : SDCallSeqStart<[SDTCisVT<0, i32>]>;
27 def SDT_MipsCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>, SDTCisVT<1, i32>]>;
28 def SDT_MipsMAddMSub : SDTypeProfile<0, 4,
29 [SDTCisVT<0, i32>, SDTCisSameAs<0, 1>,
32 def SDT_MipsDivRem : SDTypeProfile<0, 2,
37 def MipsJmpLink : SDNode<"MipsISD::JmpLink",SDT_MipsJmpLink,
38 [SDNPHasChain, SDNPOutGlue, SDNPOptInGlue,
41 // Hi and Lo nodes are used to handle global addresses. Used on
42 // MipsISelLowering to lower stuff like GlobalAddress, ExternalSymbol
43 // static model. (nothing to do with Mips Registers Hi and Lo)
44 def MipsHi : SDNode<"MipsISD::Hi", SDTIntUnaryOp>;
45 def MipsLo : SDNode<"MipsISD::Lo", SDTIntUnaryOp>;
46 def MipsGPRel : SDNode<"MipsISD::GPRel", SDTIntUnaryOp>;
49 def MipsRet : SDNode<"MipsISD::Ret", SDT_MipsRet, [SDNPHasChain,
52 // These are target-independent nodes, but have target-specific formats.
53 def callseq_start : SDNode<"ISD::CALLSEQ_START", SDT_MipsCallSeqStart,
54 [SDNPHasChain, SDNPOutGlue]>;
55 def callseq_end : SDNode<"ISD::CALLSEQ_END", SDT_MipsCallSeqEnd,
56 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
59 def MipsMAdd : SDNode<"MipsISD::MAdd", SDT_MipsMAddMSub,
60 [SDNPOptInGlue, SDNPOutGlue]>;
61 def MipsMAddu : SDNode<"MipsISD::MAddu", SDT_MipsMAddMSub,
62 [SDNPOptInGlue, SDNPOutGlue]>;
63 def MipsMSub : SDNode<"MipsISD::MSub", SDT_MipsMAddMSub,
64 [SDNPOptInGlue, SDNPOutGlue]>;
65 def MipsMSubu : SDNode<"MipsISD::MSubu", SDT_MipsMAddMSub,
66 [SDNPOptInGlue, SDNPOutGlue]>;
69 def MipsDivRem : SDNode<"MipsISD::DivRem", SDT_MipsDivRem,
71 def MipsDivRemU : SDNode<"MipsISD::DivRemU", SDT_MipsDivRem,
74 //===---------------------------------------------------------------------===//
75 // Mips Instruction Predicate Definitions.
76 //===---------------------------------------------------------------------===//
77 def HasSEInReg : Predicate<"Subtarget.hasSEInReg()">;
78 def HasBitCount : Predicate<"Subtarget.hasBitCount()">;
79 def HasSwap : Predicate<"Subtarget.hasSwap()">;
80 def HasCondMov : Predicate<"Subtarget.hasCondMov()">;
81 def IsMips32 : Predicate<"Subtarget.isMips32()">;
82 def IsMips32r2 : Predicate<"Subtarget.isMips32r2()">;
84 //===---------------------------------------------------------------------===//
85 // Mips Operand, Complex Patterns and Transformations Definitions.
86 //===---------------------------------------------------------------------===//
88 // Instruction operand types
89 def brtarget : Operand<OtherVT>;
90 def calltarget : Operand<i32>;
91 def simm16 : Operand<i32>;
92 def shamt : Operand<i32>;
95 def uimm16 : Operand<i32> {
96 let PrintMethod = "printUnsignedImm";
100 def mem : Operand<i32> {
101 let PrintMethod = "printMemOperand";
102 let MIOperandInfo = (ops simm16, CPURegs);
105 // Transformation Function - get the lower 16 bits.
106 def LO16 : SDNodeXForm<imm, [{
107 return getI32Imm((unsigned)N->getZExtValue() & 0xFFFF);
110 // Transformation Function - get the higher 16 bits.
111 def HI16 : SDNodeXForm<imm, [{
112 return getI32Imm((unsigned)N->getZExtValue() >> 16);
115 // Node immediate fits as 16-bit sign extended on target immediate.
117 def immSExt16 : PatLeaf<(imm), [{ return isInt<16>(N->getSExtValue()); }]>;
119 // Node immediate fits as 16-bit zero extended on target immediate.
120 // The LO16 param means that only the lower 16 bits of the node
121 // immediate are caught.
123 def immZExt16 : PatLeaf<(imm), [{
124 if (N->getValueType(0) == MVT::i32)
125 return (uint32_t)N->getZExtValue() == (unsigned short)N->getZExtValue();
127 return (uint64_t)N->getZExtValue() == (unsigned short)N->getZExtValue();
130 // shamt field must fit in 5 bits.
131 def immZExt5 : PatLeaf<(imm), [{
132 return N->getZExtValue() == ((N->getZExtValue()) & 0x1f) ;
135 // Mips Address Mode! SDNode frameindex could possibily be a match
136 // since load and store instructions from stack used it.
137 def addr : ComplexPattern<iPTR, 2, "SelectAddr", [frameindex], []>;
139 //===---------------------------------------------------------------------===//
140 // Instructions specific format
141 //===---------------------------------------------------------------------===//
143 // Arithmetic 3 register operands
144 let isCommutable = 1 in
145 class ArithR<bits<6> op, bits<6> func, string instr_asm, SDNode OpNode,
146 InstrItinClass itin>:
147 FR<op, func, (outs CPURegs:$dst), (ins CPURegs:$b, CPURegs:$c),
148 !strconcat(instr_asm, "\t$dst, $b, $c"),
149 [(set CPURegs:$dst, (OpNode CPURegs:$b, CPURegs:$c))], itin>;
151 let isCommutable = 1 in
152 class ArithOverflowR<bits<6> op, bits<6> func, string instr_asm>:
153 FR<op, func, (outs CPURegs:$dst), (ins CPURegs:$b, CPURegs:$c),
154 !strconcat(instr_asm, "\t$dst, $b, $c"), [], IIAlu>;
156 // Arithmetic 2 register operands
157 class ArithI<bits<6> op, string instr_asm, SDNode OpNode,
158 Operand Od, PatLeaf imm_type> :
159 FI<op, (outs CPURegs:$dst), (ins CPURegs:$b, Od:$c),
160 !strconcat(instr_asm, "\t$dst, $b, $c"),
161 [(set CPURegs:$dst, (OpNode CPURegs:$b, imm_type:$c))], IIAlu>;
163 class ArithOverflowI<bits<6> op, string instr_asm, SDNode OpNode,
164 Operand Od, PatLeaf imm_type> :
165 FI<op, (outs CPURegs:$dst), (ins CPURegs:$b, Od:$c),
166 !strconcat(instr_asm, "\t$dst, $b, $c"), [], IIAlu>;
168 // Arithmetic Multiply ADD/SUB
169 let rd = 0, shamt = 0, Defs = [HI, LO], Uses = [HI, LO] in
170 class MArithR<bits<6> func, string instr_asm, SDNode op> :
171 FR<0x1c, func, (outs), (ins CPURegs:$rs, CPURegs:$rt),
172 !strconcat(instr_asm, "\t$rs, $rt"),
173 [(op CPURegs:$rs, CPURegs:$rt, LO, HI)], IIImul>;
176 class LogicR<bits<6> func, string instr_asm, SDNode OpNode>:
177 FR<0x00, func, (outs CPURegs:$dst), (ins CPURegs:$b, CPURegs:$c),
178 !strconcat(instr_asm, "\t$dst, $b, $c"),
179 [(set CPURegs:$dst, (OpNode CPURegs:$b, CPURegs:$c))], IIAlu>;
181 class LogicI<bits<6> op, string instr_asm, SDNode OpNode>:
182 FI<op, (outs CPURegs:$dst), (ins CPURegs:$b, uimm16:$c),
183 !strconcat(instr_asm, "\t$dst, $b, $c"),
184 [(set CPURegs:$dst, (OpNode CPURegs:$b, immZExt16:$c))], IIAlu>;
186 class LogicNOR<bits<6> op, bits<6> func, string instr_asm>:
187 FR<op, func, (outs CPURegs:$dst), (ins CPURegs:$b, CPURegs:$c),
188 !strconcat(instr_asm, "\t$dst, $b, $c"),
189 [(set CPURegs:$dst, (not (or CPURegs:$b, CPURegs:$c)))], IIAlu>;
192 class LogicR_shift_rotate_imm<bits<6> func, bits<5> _rs, string instr_asm,
194 FR<0x00, func, (outs CPURegs:$dst), (ins CPURegs:$b, shamt:$c),
195 !strconcat(instr_asm, "\t$dst, $b, $c"),
196 [(set CPURegs:$dst, (OpNode CPURegs:$b, immZExt5:$c))], IIAlu> {
200 class LogicR_shift_rotate_reg<bits<6> func, bits<5> _shamt, string instr_asm,
202 FR<0x00, func, (outs CPURegs:$dst), (ins CPURegs:$c, CPURegs:$b),
203 !strconcat(instr_asm, "\t$dst, $b, $c"),
204 [(set CPURegs:$dst, (OpNode CPURegs:$b, CPURegs:$c))], IIAlu> {
208 // Load Upper Imediate
209 class LoadUpper<bits<6> op, string instr_asm>:
213 !strconcat(instr_asm, "\t$dst, $imm"),
217 let canFoldAsLoad = 1, hasDelaySlot = 1 in
218 class LoadM<bits<6> op, string instr_asm, PatFrag OpNode>:
219 FI<op, (outs CPURegs:$dst), (ins mem:$addr),
220 !strconcat(instr_asm, "\t$dst, $addr"),
221 [(set CPURegs:$dst, (OpNode addr:$addr))], IILoad>;
223 class StoreM<bits<6> op, string instr_asm, PatFrag OpNode>:
224 FI<op, (outs), (ins CPURegs:$dst, mem:$addr),
225 !strconcat(instr_asm, "\t$dst, $addr"),
226 [(OpNode CPURegs:$dst, addr:$addr)], IIStore>;
228 // Conditional Branch
229 let isBranch = 1, isTerminator=1, hasDelaySlot = 1 in {
230 class CBranch<bits<6> op, string instr_asm, PatFrag cond_op>:
231 FI<op, (outs), (ins CPURegs:$a, CPURegs:$b, brtarget:$offset),
232 !strconcat(instr_asm, "\t$a, $b, $offset"),
233 [(brcond (cond_op CPURegs:$a, CPURegs:$b), bb:$offset)],
236 class CBranchZero<bits<6> op, string instr_asm, PatFrag cond_op>:
237 FI<op, (outs), (ins CPURegs:$src, brtarget:$offset),
238 !strconcat(instr_asm, "\t$src, $offset"),
239 [(brcond (cond_op CPURegs:$src, 0), bb:$offset)],
244 class SetCC_R<bits<6> op, bits<6> func, string instr_asm,
246 FR<op, func, (outs CPURegs:$dst), (ins CPURegs:$b, CPURegs:$c),
247 !strconcat(instr_asm, "\t$dst, $b, $c"),
248 [(set CPURegs:$dst, (cond_op CPURegs:$b, CPURegs:$c))],
251 class SetCC_I<bits<6> op, string instr_asm, PatFrag cond_op,
252 Operand Od, PatLeaf imm_type>:
253 FI<op, (outs CPURegs:$dst), (ins CPURegs:$b, Od:$c),
254 !strconcat(instr_asm, "\t$dst, $b, $c"),
255 [(set CPURegs:$dst, (cond_op CPURegs:$b, imm_type:$c))],
258 // Unconditional branch
259 let isBranch=1, isTerminator=1, isBarrier=1, hasDelaySlot = 1 in
260 class JumpFJ<bits<6> op, string instr_asm>:
261 FJ<op, (outs), (ins brtarget:$target),
262 !strconcat(instr_asm, "\t$target"), [(br bb:$target)], IIBranch>;
264 let isBranch=1, isTerminator=1, isBarrier=1, rd=0, hasDelaySlot = 1 in
265 class JumpFR<bits<6> op, bits<6> func, string instr_asm>:
266 FR<op, func, (outs), (ins CPURegs:$target),
267 !strconcat(instr_asm, "\t$target"), [(brind CPURegs:$target)], IIBranch>;
269 // Jump and Link (Call)
270 let isCall=1, hasDelaySlot=1,
271 // All calls clobber the non-callee saved registers...
272 Defs = [AT, V0, V1, A0, A1, A2, A3, T0, T1, T2, T3, T4, T5, T6, T7, T8, T9,
273 K0, K1, D0, D1, D2, D3, D4, D5, D6, D7, D8, D9], Uses = [GP] in {
274 class JumpLink<bits<6> op, string instr_asm>:
275 FJ<op, (outs), (ins calltarget:$target, variable_ops),
276 !strconcat(instr_asm, "\t$target"), [(MipsJmpLink imm:$target)],
280 class JumpLinkReg<bits<6> op, bits<6> func, string instr_asm>:
281 FR<op, func, (outs), (ins CPURegs:$rs, variable_ops),
282 !strconcat(instr_asm, "\t$rs"), [(MipsJmpLink CPURegs:$rs)], IIBranch>;
284 class BranchLink<string instr_asm>:
285 FI<0x1, (outs), (ins CPURegs:$rs, brtarget:$target, variable_ops),
286 !strconcat(instr_asm, "\t$rs, $target"), [], IIBranch>;
290 let Defs = [HI, LO] in {
291 class Mul<bits<6> func, string instr_asm, InstrItinClass itin>:
292 FR<0x00, func, (outs), (ins CPURegs:$a, CPURegs:$b),
293 !strconcat(instr_asm, "\t$a, $b"), [], itin>;
295 class Div<SDNode op, bits<6> func, string instr_asm, InstrItinClass itin>:
296 FR<0x00, func, (outs), (ins CPURegs:$a, CPURegs:$b),
297 !strconcat(instr_asm, "\t$$zero, $a, $b"),
298 [(op CPURegs:$a, CPURegs:$b)], itin>;
302 class MoveFromLOHI<bits<6> func, string instr_asm>:
303 FR<0x00, func, (outs CPURegs:$dst), (ins),
304 !strconcat(instr_asm, "\t$dst"), [], IIHiLo>;
306 class MoveToLOHI<bits<6> func, string instr_asm>:
307 FR<0x00, func, (outs), (ins CPURegs:$src),
308 !strconcat(instr_asm, "\t$src"), [], IIHiLo>;
310 class EffectiveAddress<string instr_asm> :
311 FI<0x09, (outs CPURegs:$dst), (ins mem:$addr),
312 instr_asm, [(set CPURegs:$dst, addr:$addr)], IIAlu>;
314 // Count Leading Ones/Zeros in Word
315 class CountLeading<bits<6> func, string instr_asm, list<dag> pattern>:
316 FR<0x1c, func, (outs CPURegs:$dst), (ins CPURegs:$src),
317 !strconcat(instr_asm, "\t$dst, $src"), pattern, IIAlu>,
318 Requires<[HasBitCount]> {
323 // Sign Extend in Register.
324 class SignExtInReg<bits<6> func, string instr_asm, ValueType vt>:
325 FR<0x3f, func, (outs CPURegs:$dst), (ins CPURegs:$src),
326 !strconcat(instr_asm, "\t$dst, $src"),
327 [(set CPURegs:$dst, (sext_inreg CPURegs:$src, vt))], NoItinerary>;
330 class ByteSwap<bits<6> func, string instr_asm>:
331 FR<0x1f, func, (outs CPURegs:$dst), (ins CPURegs:$src),
332 !strconcat(instr_asm, "\t$dst, $src"),
333 [(set CPURegs:$dst, (bswap CPURegs:$src))], NoItinerary>;
336 class CondMov<bits<6> func, string instr_asm, PatLeaf MovCode>:
337 FR<0x00, func, (outs CPURegs:$dst), (ins CPURegs:$F, CPURegs:$T,
338 CPURegs:$cond), !strconcat(instr_asm, "\t$dst, $T, $cond"),
341 //===---------------------------------------------------------------------===//
342 // Pseudo instructions
343 //===---------------------------------------------------------------------===//
345 // As stack alignment is always done with addiu, we need a 16-bit immediate
346 let Defs = [SP], Uses = [SP] in {
347 def ADJCALLSTACKDOWN : MipsPseudo<(outs), (ins uimm16:$amt),
348 "!ADJCALLSTACKDOWN $amt",
349 [(callseq_start timm:$amt)]>;
350 def ADJCALLSTACKUP : MipsPseudo<(outs), (ins uimm16:$amt1, uimm16:$amt2),
351 "!ADJCALLSTACKUP $amt1",
352 [(callseq_end timm:$amt1, timm:$amt2)]>;
355 // Some assembly macros need to avoid pseudoinstructions and assembler
356 // automatic reodering, we should reorder ourselves.
357 def MACRO : MipsPseudo<(outs), (ins), ".set\tmacro", []>;
358 def REORDER : MipsPseudo<(outs), (ins), ".set\treorder", []>;
359 def NOMACRO : MipsPseudo<(outs), (ins), ".set\tnomacro", []>;
360 def NOREORDER : MipsPseudo<(outs), (ins), ".set\tnoreorder", []>;
362 // These macros are inserted to prevent GAS from complaining
363 // when using the AT register.
364 def NOAT : MipsPseudo<(outs), (ins), ".set\tnoat", []>;
365 def ATMACRO : MipsPseudo<(outs), (ins), ".set\tat", []>;
367 // When handling PIC code the assembler needs .cpload and .cprestore
368 // directives. If the real instructions corresponding these directives
369 // are used, we have the same behavior, but get also a bunch of warnings
370 // from the assembler.
371 def CPLOAD : MipsPseudo<(outs), (ins CPURegs:$picreg), ".cpload\t$picreg", []>;
372 def CPRESTORE : MipsPseudo<(outs), (ins uimm16:$loc),
373 ".cprestore\t$loc\n", []>;
375 //===---------------------------------------------------------------------===//
376 // Instruction definition
377 //===---------------------------------------------------------------------===//
379 //===---------------------------------------------------------------------===//
380 // MipsI Instructions
381 //===---------------------------------------------------------------------===//
383 /// Arithmetic Instructions (ALU Immediate)
384 def ADDiu : ArithI<0x09, "addiu", add, simm16, immSExt16>;
385 def ADDi : ArithOverflowI<0x08, "addi", add, simm16, immSExt16>;
386 def SLTi : SetCC_I<0x0a, "slti", setlt, simm16, immSExt16>;
387 def SLTiu : SetCC_I<0x0b, "sltiu", setult, simm16, immSExt16>;
388 def ANDi : LogicI<0x0c, "andi", and>;
389 def ORi : LogicI<0x0d, "ori", or>;
390 def XORi : LogicI<0x0e, "xori", xor>;
391 def LUi : LoadUpper<0x0f, "lui">;
393 /// Arithmetic Instructions (3-Operand, R-Type)
394 def ADDu : ArithR<0x00, 0x21, "addu", add, IIAlu>;
395 def SUBu : ArithR<0x00, 0x23, "subu", sub, IIAlu>;
396 def ADD : ArithOverflowR<0x00, 0x20, "add">;
397 def SUB : ArithOverflowR<0x00, 0x22, "sub">;
398 def SLT : SetCC_R<0x00, 0x2a, "slt", setlt>;
399 def SLTu : SetCC_R<0x00, 0x2b, "sltu", setult>;
400 def AND : LogicR<0x24, "and", and>;
401 def OR : LogicR<0x25, "or", or>;
402 def XOR : LogicR<0x26, "xor", xor>;
403 def NOR : LogicNOR<0x00, 0x27, "nor">;
405 /// Shift Instructions
406 def SLL : LogicR_shift_rotate_imm<0x00, 0x00, "sll", shl>;
407 def SRL : LogicR_shift_rotate_imm<0x02, 0x00, "srl", srl>;
408 def SRA : LogicR_shift_rotate_imm<0x03, 0x00, "sra", sra>;
409 def SLLV : LogicR_shift_rotate_reg<0x04, 0x00, "sllv", shl>;
410 def SRLV : LogicR_shift_rotate_reg<0x06, 0x00, "srlv", srl>;
411 def SRAV : LogicR_shift_rotate_reg<0x07, 0x00, "srav", sra>;
413 // Rotate Instructions
414 let Predicates = [IsMips32r2] in {
415 def ROTR : LogicR_shift_rotate_imm<0x02, 0x01, "rotr", rotr>;
416 def ROTRV : LogicR_shift_rotate_reg<0x06, 0x01, "rotrv", rotr>;
419 /// Load and Store Instructions
420 def LB : LoadM<0x20, "lb", sextloadi8>;
421 def LBu : LoadM<0x24, "lbu", zextloadi8>;
422 def LH : LoadM<0x21, "lh", sextloadi16>;
423 def LHu : LoadM<0x25, "lhu", zextloadi16>;
424 def LW : LoadM<0x23, "lw", load>;
425 def SB : StoreM<0x28, "sb", truncstorei8>;
426 def SH : StoreM<0x29, "sh", truncstorei16>;
427 def SW : StoreM<0x2b, "sw", store>;
429 /// Jump and Branch Instructions
430 def J : JumpFJ<0x02, "j">;
431 def JR : JumpFR<0x00, 0x08, "jr">;
432 def JAL : JumpLink<0x03, "jal">;
433 def JALR : JumpLinkReg<0x00, 0x09, "jalr">;
434 def BEQ : CBranch<0x04, "beq", seteq>;
435 def BNE : CBranch<0x05, "bne", setne>;
438 def BGEZ : CBranchZero<0x01, "bgez", setge>;
441 def BGTZ : CBranchZero<0x07, "bgtz", setgt>;
442 def BLEZ : CBranchZero<0x07, "blez", setle>;
443 def BLTZ : CBranchZero<0x01, "bltz", setlt>;
446 def BGEZAL : BranchLink<"bgezal">;
447 def BLTZAL : BranchLink<"bltzal">;
449 let isReturn=1, isTerminator=1, hasDelaySlot=1,
450 isBarrier=1, hasCtrlDep=1, rs=0, rt=0, shamt=0 in
451 def RET : FR <0x00, 0x02, (outs), (ins CPURegs:$target),
452 "jr\t$target", [(MipsRet CPURegs:$target)], IIBranch>;
454 /// Multiply and Divide Instructions.
455 def MULT : Mul<0x18, "mult", IIImul>;
456 def MULTu : Mul<0x19, "multu", IIImul>;
457 def SDIV : Div<MipsDivRem, 0x1a, "div", IIIdiv>;
458 def UDIV : Div<MipsDivRemU, 0x1b, "divu", IIIdiv>;
461 def MTHI : MoveToLOHI<0x11, "mthi">;
463 def MTLO : MoveToLOHI<0x13, "mtlo">;
466 def MFHI : MoveFromLOHI<0x10, "mfhi">;
468 def MFLO : MoveFromLOHI<0x12, "mflo">;
470 /// Sign Ext In Register Instructions.
471 let Predicates = [HasSEInReg] in {
472 let shamt = 0x10, rs = 0 in
473 def SEB : SignExtInReg<0x21, "seb", i8>;
475 let shamt = 0x18, rs = 0 in
476 def SEH : SignExtInReg<0x20, "seh", i16>;
480 def CLZ : CountLeading<0b100000, "clz",
481 [(set CPURegs:$dst, (ctlz CPURegs:$src))]>;
482 def CLO : CountLeading<0b100001, "clo",
483 [(set CPURegs:$dst, (ctlz (not CPURegs:$src)))]>;
486 let Predicates = [HasSwap] in {
487 let shamt = 0x3, rs = 0 in
488 def WSBW : ByteSwap<0x20, "wsbw">;
492 def MIPS_CMOV_ZERO : PatLeaf<(i32 0)>;
493 def MIPS_CMOV_NZERO : PatLeaf<(i32 1)>;
495 // Conditional moves:
496 // These instructions are expanded in
497 // MipsISelLowering::EmitInstrWithCustomInserter if target does not have
498 // conditional move instructions.
499 // flag:int, data:int
500 let usesCustomInserter = 1, shamt = 0, Constraints = "$F = $dst" in
501 class CondMovIntInt<bits<6> funct, string instr_asm> :
502 FR<0, funct, (outs CPURegs:$dst),
503 (ins CPURegs:$T, CPURegs:$cond, CPURegs:$F),
504 !strconcat(instr_asm, "\t$dst, $T, $cond"), [], NoItinerary>;
506 def MOVZ_I : CondMovIntInt<0x0a, "movz">;
507 def MOVN_I : CondMovIntInt<0x0b, "movn">;
511 def NOP : FJ<0, (outs), (ins), "nop", [], IIAlu>;
513 // FrameIndexes are legalized when they are operands from load/store
514 // instructions. The same not happens for stack address copies, so an
515 // add op with mem ComplexPattern is used and the stack address copy
516 // can be matched. It's similar to Sparc LEA_ADDRi
517 def LEA_ADDiu : EffectiveAddress<"addiu\t$dst, ${addr:stackloc}">;
520 def MADD : MArithR<0, "madd", MipsMAdd>;
521 def MADDU : MArithR<1, "maddu", MipsMAddu>;
522 def MSUB : MArithR<4, "msub", MipsMSub>;
523 def MSUBU : MArithR<5, "msubu", MipsMSubu>;
525 // MUL is a assembly macro in the current used ISAs. In recent ISA's
526 // it is a real instruction.
527 def MUL : ArithR<0x1c, 0x02, "mul", mul, IIImul>, Requires<[IsMips32]>;
529 //===---------------------------------------------------------------------===//
530 // Arbitrary patterns that map to one or more instructions
531 //===---------------------------------------------------------------------===//
534 def : Pat<(i32 immSExt16:$in),
535 (ADDiu ZERO, imm:$in)>;
536 def : Pat<(i32 immZExt16:$in),
537 (ORi ZERO, imm:$in)>;
539 // Arbitrary immediates
540 def : Pat<(i32 imm:$imm),
541 (ORi (LUi (HI16 imm:$imm)), (LO16 imm:$imm))>;
544 def : Pat<(subc CPURegs:$lhs, CPURegs:$rhs),
545 (SUBu CPURegs:$lhs, CPURegs:$rhs)>;
546 def : Pat<(addc CPURegs:$lhs, CPURegs:$rhs),
547 (ADDu CPURegs:$lhs, CPURegs:$rhs)>;
548 def : Pat<(addc CPURegs:$src, immSExt16:$imm),
549 (ADDiu CPURegs:$src, imm:$imm)>;
552 def : Pat<(MipsJmpLink (i32 tglobaladdr:$dst)),
553 (JAL tglobaladdr:$dst)>;
554 def : Pat<(MipsJmpLink (i32 texternalsym:$dst)),
555 (JAL texternalsym:$dst)>;
556 //def : Pat<(MipsJmpLink CPURegs:$dst),
557 // (JALR CPURegs:$dst)>;
560 def : Pat<(MipsHi tglobaladdr:$in), (LUi tglobaladdr:$in)>;
561 def : Pat<(add CPURegs:$hi, (MipsLo tglobaladdr:$lo)),
562 (ADDiu CPURegs:$hi, tglobaladdr:$lo)>;
563 def : Pat<(add CPURegs:$hi, (MipsLo tblockaddress:$lo)),
564 (ADDiu CPURegs:$hi, tblockaddress:$lo)>;
566 def : Pat<(MipsHi tjumptable:$in), (LUi tjumptable:$in)>;
567 def : Pat<(add CPURegs:$hi, (MipsLo tjumptable:$lo)),
568 (ADDiu CPURegs:$hi, tjumptable:$lo)>;
570 def : Pat<(MipsHi tconstpool:$in), (LUi tconstpool:$in)>;
571 def : Pat<(add CPURegs:$hi, (MipsLo tconstpool:$lo)),
572 (ADDiu CPURegs:$hi, tconstpool:$lo)>;
575 def : Pat<(add CPURegs:$gp, (MipsGPRel tglobaladdr:$in)),
576 (ADDiu CPURegs:$gp, tglobaladdr:$in)>;
577 def : Pat<(add CPURegs:$gp, (MipsGPRel tconstpool:$in)),
578 (ADDiu CPURegs:$gp, tconstpool:$in)>;
580 // Mips does not have "not", so we expand our way
581 def : Pat<(not CPURegs:$in),
582 (NOR CPURegs:$in, ZERO)>;
584 // extended load and stores
585 def : Pat<(extloadi1 addr:$src), (LBu addr:$src)>;
586 def : Pat<(extloadi8 addr:$src), (LBu addr:$src)>;
587 def : Pat<(extloadi16 addr:$src), (LHu addr:$src)>;
590 def : Pat<(store (i32 0), addr:$dst), (SW ZERO, addr:$dst)>;
593 def : Pat<(brcond (setne CPURegs:$lhs, 0), bb:$dst),
594 (BNE CPURegs:$lhs, ZERO, bb:$dst)>;
595 def : Pat<(brcond (seteq CPURegs:$lhs, 0), bb:$dst),
596 (BEQ CPURegs:$lhs, ZERO, bb:$dst)>;
598 def : Pat<(brcond (setge CPURegs:$lhs, CPURegs:$rhs), bb:$dst),
599 (BEQ (SLT CPURegs:$lhs, CPURegs:$rhs), ZERO, bb:$dst)>;
600 def : Pat<(brcond (setuge CPURegs:$lhs, CPURegs:$rhs), bb:$dst),
601 (BEQ (SLTu CPURegs:$lhs, CPURegs:$rhs), ZERO, bb:$dst)>;
602 def : Pat<(brcond (setge CPURegs:$lhs, immSExt16:$rhs), bb:$dst),
603 (BEQ (SLTi CPURegs:$lhs, immSExt16:$rhs), ZERO, bb:$dst)>;
604 def : Pat<(brcond (setuge CPURegs:$lhs, immSExt16:$rhs), bb:$dst),
605 (BEQ (SLTiu CPURegs:$lhs, immSExt16:$rhs), ZERO, bb:$dst)>;
607 def : Pat<(brcond (setle CPURegs:$lhs, CPURegs:$rhs), bb:$dst),
608 (BEQ (SLT CPURegs:$rhs, CPURegs:$lhs), ZERO, bb:$dst)>;
609 def : Pat<(brcond (setule CPURegs:$lhs, CPURegs:$rhs), bb:$dst),
610 (BEQ (SLTu CPURegs:$rhs, CPURegs:$lhs), ZERO, bb:$dst)>;
612 def : Pat<(brcond CPURegs:$cond, bb:$dst),
613 (BNE CPURegs:$cond, ZERO, bb:$dst)>;
616 multiclass MovzPats<RegisterClass RC, Instruction MOVZInst> {
617 def : Pat<(select (setge CPURegs:$lhs, CPURegs:$rhs), RC:$T, RC:$F),
618 (MOVZInst RC:$T, (SLT CPURegs:$lhs, CPURegs:$rhs), RC:$F)>;
619 def : Pat<(select (setuge CPURegs:$lhs, CPURegs:$rhs), RC:$T, RC:$F),
620 (MOVZInst RC:$T, (SLTu CPURegs:$lhs, CPURegs:$rhs), RC:$F)>;
621 def : Pat<(select (setge CPURegs:$lhs, immSExt16:$rhs), RC:$T, RC:$F),
622 (MOVZInst RC:$T, (SLTi CPURegs:$lhs, immSExt16:$rhs), RC:$F)>;
623 def : Pat<(select (setuge CPURegs:$lh, immSExt16:$rh), RC:$T, RC:$F),
624 (MOVZInst RC:$T, (SLTiu CPURegs:$lh, immSExt16:$rh), RC:$F)>;
625 def : Pat<(select (setle CPURegs:$lhs, CPURegs:$rhs), RC:$T, RC:$F),
626 (MOVZInst RC:$T, (SLT CPURegs:$rhs, CPURegs:$lhs), RC:$F)>;
627 def : Pat<(select (setule CPURegs:$lhs, CPURegs:$rhs), RC:$T, RC:$F),
628 (MOVZInst RC:$T, (SLTu CPURegs:$rhs, CPURegs:$lhs), RC:$F)>;
629 def : Pat<(select (seteq CPURegs:$lhs, CPURegs:$rhs), RC:$T, RC:$F),
630 (MOVZInst RC:$T, (XOR CPURegs:$lhs, CPURegs:$rhs), RC:$F)>;
631 def : Pat<(select (seteq CPURegs:$lhs, 0), RC:$T, RC:$F),
632 (MOVZInst RC:$T, CPURegs:$lhs, RC:$F)>;
635 multiclass MovnPats<RegisterClass RC, Instruction MOVNInst> {
636 def : Pat<(select (setne CPURegs:$lhs, CPURegs:$rhs), RC:$T, RC:$F),
637 (MOVNInst RC:$T, (XOR CPURegs:$lhs, CPURegs:$rhs), RC:$F)>;
638 def : Pat<(select CPURegs:$cond, RC:$T, RC:$F),
639 (MOVNInst RC:$T, CPURegs:$cond, RC:$F)>;
640 def : Pat<(select (setne CPURegs:$lhs, 0), RC:$T, RC:$F),
641 (MOVNInst RC:$T, CPURegs:$lhs, RC:$F)>;
644 defm : MovzPats<CPURegs, MOVZ_I>;
645 defm : MovnPats<CPURegs, MOVN_I>;
647 // select patterns with got access
648 let AddedComplexity = 10 in
649 def : Pat<(select (setne CPURegs:$lhs, CPURegs:$rhs),
650 (i32 tglobaladdr:$T), CPURegs:$F),
651 (MOVN_I CPURegs:$F, (ADDiu GP, tglobaladdr:$T),
652 (XOR CPURegs:$lhs, CPURegs:$rhs))>;
655 def : Pat<(seteq CPURegs:$lhs, CPURegs:$rhs),
656 (SLTu (XOR CPURegs:$lhs, CPURegs:$rhs), 1)>;
657 def : Pat<(setne CPURegs:$lhs, CPURegs:$rhs),
658 (SLTu ZERO, (XOR CPURegs:$lhs, CPURegs:$rhs))>;
660 def : Pat<(setle CPURegs:$lhs, CPURegs:$rhs),
661 (XORi (SLT CPURegs:$rhs, CPURegs:$lhs), 1)>;
662 def : Pat<(setule CPURegs:$lhs, CPURegs:$rhs),
663 (XORi (SLTu CPURegs:$rhs, CPURegs:$lhs), 1)>;
665 def : Pat<(setgt CPURegs:$lhs, CPURegs:$rhs),
666 (SLT CPURegs:$rhs, CPURegs:$lhs)>;
667 def : Pat<(setugt CPURegs:$lhs, CPURegs:$rhs),
668 (SLTu CPURegs:$rhs, CPURegs:$lhs)>;
670 def : Pat<(setge CPURegs:$lhs, CPURegs:$rhs),
671 (XORi (SLT CPURegs:$lhs, CPURegs:$rhs), 1)>;
672 def : Pat<(setuge CPURegs:$lhs, CPURegs:$rhs),
673 (XORi (SLTu CPURegs:$lhs, CPURegs:$rhs), 1)>;
675 def : Pat<(setge CPURegs:$lhs, immSExt16:$rhs),
676 (XORi (SLTi CPURegs:$lhs, immSExt16:$rhs), 1)>;
677 def : Pat<(setuge CPURegs:$lhs, immSExt16:$rhs),
678 (XORi (SLTiu CPURegs:$lhs, immSExt16:$rhs), 1)>;
680 //===---------------------------------------------------------------------===//
681 // Floating Point Support
682 //===---------------------------------------------------------------------===//
684 include "MipsInstrFPU.td"