1 //===- Mips16InstrInfo.td - Target Description for Mips16 -*- 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 // This file describes Mips16 instructions.
12 //===----------------------------------------------------------------------===//
18 ComplexPattern<iPTR, 3, "SelectAddr16", [frameindex], [SDNPWantParent]>;
22 def mem16 : Operand<i32> {
23 let PrintMethod = "printMemOperand";
24 let MIOperandInfo = (ops CPU16Regs, simm16, CPU16Regs);
25 let EncoderMethod = "getMemEncoding";
28 def mem16_ea : Operand<i32> {
29 let PrintMethod = "printMemOperandEA";
30 let MIOperandInfo = (ops CPU16Regs, simm16);
31 let EncoderMethod = "getMemEncoding";
36 // I8 instruction format
39 class FI816_ins_base<bits<3> _func, string asmstr,
40 string asmstr2, InstrItinClass itin>:
41 FI816<_func, (outs), (ins simm16:$imm), !strconcat(asmstr, asmstr2),
45 class FI816_SP_ins<bits<3> _func, string asmstr,
47 FI816_ins_base<_func, asmstr, "\t$$sp, $imm # 16 bit inst", itin>;
50 // RI instruction format
54 class FRI16_ins_base<bits<5> op, string asmstr, string asmstr2,
56 FRI16<op, (outs CPU16Regs:$rx), (ins simm16:$imm),
57 !strconcat(asmstr, asmstr2), [], itin>;
59 class FRI16_ins<bits<5> op, string asmstr,
61 FRI16_ins_base<op, asmstr, "\t$rx, $imm \t# 16 bit inst", itin>;
63 class FRI16R_ins_base<bits<5> op, string asmstr, string asmstr2,
65 FRI16<op, (outs), (ins CPU16Regs:$rx, simm16:$imm),
66 !strconcat(asmstr, asmstr2), [], itin>;
68 class FRI16R_ins<bits<5> op, string asmstr,
70 FRI16R_ins_base<op, asmstr, "\t$rx, $imm \t# 16 bit inst", itin>;
72 class F2RI16_ins<bits<5> _op, string asmstr,
74 FRI16<_op, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_, simm16:$imm),
75 !strconcat(asmstr, "\t$rx, $imm\t# 16 bit inst"), [], itin> {
76 let Constraints = "$rx_ = $rx";
79 class FRI16_B_ins<bits<5> _op, string asmstr,
81 FRI16<_op, (outs), (ins CPU16Regs:$rx, brtarget:$imm),
82 !strconcat(asmstr, "\t$rx, $imm # 16 bit inst"), [], itin>;
84 // Compare a register and immediate and place result in CC
87 // EXT-CCRR Instruction format
89 class FEXT_CCRXI16_ins<string asmstr>:
90 MipsPseudo16<(outs CPU16Regs:$cc), (ins CPU16Regs:$rx, simm16:$imm),
91 !strconcat(asmstr, "\t$rx, $imm\n\tmove\t$cc, $$t8"), []> {
95 // JAL and JALX instruction format
97 class FJAL16_ins<bits<1> _X, string asmstr,
99 FJAL16<_X, (outs), (ins simm20:$imm),
100 !strconcat(asmstr, "\t$imm\n\tnop"),[],
105 // EXT-I instruction format
107 class FEXT_I16_ins<bits<5> eop, string asmstr, InstrItinClass itin> :
108 FEXT_I16<eop, (outs), (ins brtarget:$imm16),
109 !strconcat(asmstr, "\t$imm16"),[], itin>;
112 // EXT-I8 instruction format
115 class FEXT_I816_ins_base<bits<3> _func, string asmstr,
116 string asmstr2, InstrItinClass itin>:
117 FEXT_I816<_func, (outs), (ins simm16:$imm), !strconcat(asmstr, asmstr2),
120 class FEXT_I816_ins<bits<3> _func, string asmstr,
121 InstrItinClass itin>:
122 FEXT_I816_ins_base<_func, asmstr, "\t$imm", itin>;
124 class FEXT_I816_SP_ins<bits<3> _func, string asmstr,
125 InstrItinClass itin>:
126 FEXT_I816_ins_base<_func, asmstr, "\t$$sp, $imm", itin>;
129 // Assembler formats in alphabetical order.
130 // Natural and pseudos are mixed together.
132 // Compare two registers and place result in CC
133 // Implicit use of T8
135 // CC-RR Instruction format
137 class FCCRR16_ins<string asmstr> :
138 MipsPseudo16<(outs CPU16Regs:$cc), (ins CPU16Regs:$rx, CPU16Regs:$ry),
139 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$cc, $$t8"), []> {
144 // EXT-RI instruction format
147 class FEXT_RI16_ins_base<bits<5> _op, string asmstr, string asmstr2,
148 InstrItinClass itin>:
149 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins simm16:$imm),
150 !strconcat(asmstr, asmstr2), [], itin>;
152 class FEXT_RI16_ins<bits<5> _op, string asmstr,
153 InstrItinClass itin>:
154 FEXT_RI16_ins_base<_op, asmstr, "\t$rx, $imm", itin>;
156 class FEXT_RI16R_ins_base<bits<5> _op, string asmstr, string asmstr2,
157 InstrItinClass itin>:
158 FEXT_RI16<_op, (outs ), (ins CPU16Regs:$rx, simm16:$imm),
159 !strconcat(asmstr, asmstr2), [], itin>;
161 class FEXT_RI16R_ins<bits<5> _op, string asmstr,
162 InstrItinClass itin>:
163 FEXT_RI16R_ins_base<_op, asmstr, "\t$rx, $imm", itin>;
165 class FEXT_RI16_PC_ins<bits<5> _op, string asmstr, InstrItinClass itin>:
166 FEXT_RI16_ins_base<_op, asmstr, "\t$rx, $$pc, $imm", itin>;
168 class FEXT_RI16_B_ins<bits<5> _op, string asmstr,
169 InstrItinClass itin>:
170 FEXT_RI16<_op, (outs), (ins CPU16Regs:$rx, brtarget:$imm),
171 !strconcat(asmstr, "\t$rx, $imm"), [], itin>;
173 class FEXT_2RI16_ins<bits<5> _op, string asmstr,
174 InstrItinClass itin>:
175 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_, simm16:$imm),
176 !strconcat(asmstr, "\t$rx, $imm"), [], itin> {
177 let Constraints = "$rx_ = $rx";
181 // this has an explicit sp argument that we ignore to work around a problem
183 class FEXT_RI16_SP_explicit_ins<bits<5> _op, string asmstr,
184 InstrItinClass itin>:
185 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPUSPReg:$ry, simm16:$imm),
186 !strconcat(asmstr, "\t$rx, $imm ( $ry ); "), [], itin>;
189 // EXT-RRI instruction format
192 class FEXT_RRI16_mem_ins<bits<5> op, string asmstr, Operand MemOpnd,
193 InstrItinClass itin>:
194 FEXT_RRI16<op, (outs CPU16Regs:$ry), (ins MemOpnd:$addr),
195 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
197 class FEXT_RRI16_mem2_ins<bits<5> op, string asmstr, Operand MemOpnd,
198 InstrItinClass itin>:
199 FEXT_RRI16<op, (outs ), (ins CPU16Regs:$ry, MemOpnd:$addr),
200 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
204 // EXT-RRI-A instruction format
207 class FEXT_RRI_A16_mem_ins<bits<1> op, string asmstr, Operand MemOpnd,
208 InstrItinClass itin>:
209 FEXT_RRI_A16<op, (outs CPU16Regs:$ry), (ins MemOpnd:$addr),
210 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
213 // EXT-SHIFT instruction format
215 class FEXT_SHIFT16_ins<bits<2> _f, string asmstr, InstrItinClass itin>:
216 FEXT_SHIFT16<_f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry, shamt:$sa),
217 !strconcat(asmstr, "\t$rx, $ry, $sa"), [], itin>;
222 class FEXT_T8I816_ins<string asmstr, string asmstr2>:
224 (ins CPU16Regs:$rx, CPU16Regs:$ry, brtarget:$imm),
225 !strconcat(asmstr2, !strconcat("\t$rx, $ry\n\t",
226 !strconcat(asmstr, "\t$imm"))),[]> {
233 class FEXT_T8I8I16_ins<string asmstr, string asmstr2>:
235 (ins CPU16Regs:$rx, simm16:$imm, brtarget:$targ),
236 !strconcat(asmstr2, !strconcat("\t$rx, $imm\n\t",
237 !strconcat(asmstr, "\t$targ"))), []> {
244 // I8_MOVR32 instruction format (used only by the MOVR32 instructio
246 class FI8_MOVR3216_ins<string asmstr, InstrItinClass itin>:
247 FI8_MOVR3216<(outs CPU16Regs:$rz), (ins CPURegs:$r32),
248 !strconcat(asmstr, "\t$rz, $r32"), [], itin>;
251 // I8_MOV32R instruction format (used only by MOV32R instruction)
254 class FI8_MOV32R16_ins<string asmstr, InstrItinClass itin>:
255 FI8_MOV32R16<(outs CPURegs:$r32), (ins CPU16Regs:$rz),
256 !strconcat(asmstr, "\t$r32, $rz"), [], itin>;
259 // This are pseudo formats for multiply
260 // This first one can be changed to non pseudo now.
264 class FMULT16_ins<string asmstr, InstrItinClass itin> :
265 MipsPseudo16<(outs), (ins CPU16Regs:$rx, CPU16Regs:$ry),
266 !strconcat(asmstr, "\t$rx, $ry"), []>;
271 class FMULT16_LO_ins<string asmstr, InstrItinClass itin> :
272 MipsPseudo16<(outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
273 !strconcat(asmstr, "\t$rx, $ry\n\tmflo\t$rz"), []> {
278 // RR-type instruction format
281 class FRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
282 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
283 !strconcat(asmstr, "\t$rx, $ry"), [], itin> {
286 class FRR16R_ins<bits<5> f, string asmstr, InstrItinClass itin> :
287 FRR16<f, (outs), (ins CPU16Regs:$rx, CPU16Regs:$ry),
288 !strconcat(asmstr, "\t$rx, $ry"), [], itin> {
291 class FRRTR16_ins<string asmstr> :
292 MipsPseudo16<(outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
293 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$rz, $$t8"), []> ;
296 // maybe refactor but need a $zero as a dummy first parameter
298 class FRR16_div_ins<bits<5> f, string asmstr, InstrItinClass itin> :
299 FRR16<f, (outs ), (ins CPU16Regs:$rx, CPU16Regs:$ry),
300 !strconcat(asmstr, "\t$$zero, $rx, $ry"), [], itin> ;
302 class FUnaryRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
303 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
304 !strconcat(asmstr, "\t$rx, $ry"), [], itin> ;
307 class FRR16_M_ins<bits<5> f, string asmstr,
308 InstrItinClass itin> :
309 FRR16<f, (outs CPU16Regs:$rx), (ins),
310 !strconcat(asmstr, "\t$rx"), [], itin>;
312 class FRxRxRy16_ins<bits<5> f, string asmstr,
313 InstrItinClass itin> :
314 FRR16<f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
315 !strconcat(asmstr, "\t$rz, $ry"),
317 let Constraints = "$rx = $rz";
321 class FRR16_JALRC_RA_only_ins<bits<1> nd_, bits<1> l_,
322 string asmstr, InstrItinClass itin>:
323 FRR16_JALRC<nd_, l_, 1, (outs), (ins), !strconcat(asmstr, "\t $$ra"),
327 class FRR16_JALRC_ins<bits<1> nd, bits<1> l, bits<1> ra,
328 string asmstr, InstrItinClass itin>:
329 FRR16_JALRC<nd, l, ra, (outs), (ins CPU16Regs:$rx),
330 !strconcat(asmstr, "\t $rx"), [], itin> ;
333 // RRR-type instruction format
336 class FRRR16_ins<bits<2> _f, string asmstr, InstrItinClass itin> :
337 FRRR16<_f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
338 !strconcat(asmstr, "\t$rz, $rx, $ry"), [], itin>;
341 // These Sel patterns support the generation of conditional move
342 // pseudo instructions.
344 // The nomenclature uses the components making up the pseudo and may
345 // be a bit counter intuitive when compared with the end result we seek.
346 // For example using a bqez in the example directly below results in the
347 // conditional move being done if the tested register is not zero.
348 // I considered in easier to check by keeping the pseudo consistent with
349 // it's components but it could have been done differently.
351 // The simplest case is when can test and operand directly and do the
352 // conditional move based on a simple mips16 conditional
353 // branch instruction.
355 // if $op == beqz or bnez:
360 // if $op == beqz, then if $rt != 0, then the conditional assignment
361 // $rd = $rs is done.
363 // if $op == bnez, then if $rt == 0, then the conditional assignment
364 // $rd = $rs is done.
366 // So this pseudo class only has one operand, i.e. op
368 class Sel<string op>:
369 MipsPseudo16<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
371 !strconcat(op, "\t$rt, .+4\n\t\n\tmove $rd, $rs"), []> {
372 //let isCodeGenOnly=1;
373 let Constraints = "$rd = $rd_";
374 let usesCustomInserter = 1;
378 // The next two instruction classes allow for an operand which tests
379 // two operands and returns a value in register T8 and
380 //then does a conditional branch based on the value of T8
383 // op2 can be cmpi or slti/sltiu
384 // op1 can bteqz or btnez
385 // the operands for op2 are a register and a signed constant
387 // $op2 $t, $imm ;test register t and branch conditionally
388 // $op1 .+4 ;op1 is a conditional branch
392 class SeliT<string op1, string op2>:
393 MipsPseudo16<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
394 CPU16Regs:$rl, simm16:$imm),
396 !strconcat("\t$rl, $imm\n\t",
397 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), []> {
399 let Constraints = "$rd = $rd_";
400 let usesCustomInserter = 1;
404 // op2 can be cmp or slt/sltu
405 // op1 can be bteqz or btnez
406 // the operands for op2 are two registers
407 // op1 is a conditional branch
410 // $op2 $rl, $rr ;test registers rl,rr
411 // $op1 .+4 ;op2 is a conditional branch
415 class SelT<string op1, string op2>:
416 MipsPseudo16<(outs CPU16Regs:$rd_),
417 (ins CPU16Regs:$rd, CPU16Regs:$rs,
418 CPU16Regs:$rl, CPU16Regs:$rr),
420 !strconcat("\t$rl, $rr\n\t",
421 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), []> {
423 let Constraints = "$rd = $rd_";
424 let usesCustomInserter = 1;
430 def imm32: Operand<i32>;
433 MipsPseudo16<(outs), (ins imm32:$imm), "\t.word $imm", []>;
436 MipsPseudo16<(outs), (ins CPU16Regs:$rx, imm32:$imm),
437 "lw\t$rx, 1f\n\tb\t2f\n\t.align\t2\n1: \t.word\t$imm\n2:", []>;
441 // Some general instruction class info
445 class ArithLogic16Defs<bit isCom=0> {
447 bit isCommutable = isCom;
448 bit isReMaterializable = 1;
449 bit neverHasSideEffects = 1;
454 bit isTerminator = 1;
460 bit isTerminator = 1;
473 // Format: ADDIU rx, immediate MIPS16e
474 // Purpose: Add Immediate Unsigned Word (2-Operand, Extended)
475 // To add a constant to a 32-bit integer.
477 def AddiuRxImmX16: FEXT_RI16_ins<0b01001, "addiu", IIAlu>;
479 def AddiuRxRxImm16: F2RI16_ins<0b01001, "addiu", IIAlu>,
480 ArithLogic16Defs<0> {
481 let AddedComplexity = 5;
483 def AddiuRxRxImmX16: FEXT_2RI16_ins<0b01001, "addiu", IIAlu>,
484 ArithLogic16Defs<0> {
485 let isCodeGenOnly = 1;
488 def AddiuRxRyOffMemX16:
489 FEXT_RRI_A16_mem_ins<0, "addiu", mem16_ea, IIAlu>;
493 // Format: ADDIU rx, pc, immediate MIPS16e
494 // Purpose: Add Immediate Unsigned Word (3-Operand, PC-Relative, Extended)
495 // To add a constant to the program counter.
497 def AddiuRxPcImmX16: FEXT_RI16_PC_ins<0b00001, "addiu", IIAlu>;
500 // Format: ADDIU sp, immediate MIPS16e
501 // Purpose: Add Immediate Unsigned Word (2-Operand, SP-Relative, Extended)
502 // To add a constant to the stack pointer.
505 : FI816_SP_ins<0b011, "addiu", IIAlu> {
508 let AddedComplexity = 5;
512 : FEXT_I816_SP_ins<0b011, "addiu", IIAlu> {
518 // Format: ADDU rz, rx, ry MIPS16e
519 // Purpose: Add Unsigned Word (3-Operand)
520 // To add 32-bit integers.
523 def AdduRxRyRz16: FRRR16_ins<01, "addu", IIAlu>, ArithLogic16Defs<1>;
526 // Format: AND rx, ry MIPS16e
528 // To do a bitwise logical AND.
530 def AndRxRxRy16: FRxRxRy16_ins<0b01100, "and", IIAlu>, ArithLogic16Defs<1>;
534 // Format: BEQZ rx, offset MIPS16e
535 // Purpose: Branch on Equal to Zero
536 // To test a GPR then do a PC-relative conditional branch.
538 def BeqzRxImm16: FRI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
542 // Format: BEQZ rx, offset MIPS16e
543 // Purpose: Branch on Equal to Zero (Extended)
544 // To test a GPR then do a PC-relative conditional branch.
546 def BeqzRxImmX16: FEXT_RI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
548 // Format: B offset MIPS16e
549 // Purpose: Unconditional Branch
550 // To do an unconditional PC-relative branch.
552 def BimmX16: FEXT_I16_ins<0b00010, "b", IIAlu>, branch16;
555 // Format: BNEZ rx, offset MIPS16e
556 // Purpose: Branch on Not Equal to Zero
557 // To test a GPR then do a PC-relative conditional branch.
559 def BnezRxImm16: FRI16_B_ins<0b00101, "bnez", IIAlu>, cbranch16;
562 // Format: BNEZ rx, offset MIPS16e
563 // Purpose: Branch on Not Equal to Zero (Extended)
564 // To test a GPR then do a PC-relative conditional branch.
566 def BnezRxImmX16: FEXT_RI16_B_ins<0b00101, "bnez", IIAlu>, cbranch16;
569 // Format: BTEQZ offset MIPS16e
570 // Purpose: Branch on T Equal to Zero (Extended)
571 // To test special register T then do a PC-relative conditional branch.
573 def BteqzX16: FEXT_I816_ins<0b000, "bteqz", IIAlu>, cbranch16 {
577 def BteqzT8CmpX16: FEXT_T8I816_ins<"bteqz", "cmp">, cbranch16;
579 def BteqzT8CmpiX16: FEXT_T8I8I16_ins<"bteqz", "cmpi">,
582 def BteqzT8SltX16: FEXT_T8I816_ins<"bteqz", "slt">, cbranch16;
584 def BteqzT8SltuX16: FEXT_T8I816_ins<"bteqz", "sltu">, cbranch16;
586 def BteqzT8SltiX16: FEXT_T8I8I16_ins<"bteqz", "slti">, cbranch16;
588 def BteqzT8SltiuX16: FEXT_T8I8I16_ins<"bteqz", "sltiu">,
592 // Format: BTNEZ offset MIPS16e
593 // Purpose: Branch on T Not Equal to Zero (Extended)
594 // To test special register T then do a PC-relative conditional branch.
596 def BtnezX16: FEXT_I816_ins<0b001, "btnez", IIAlu> ,cbranch16 {
600 def BtnezT8CmpX16: FEXT_T8I816_ins<"btnez", "cmp">, cbranch16;
602 def BtnezT8CmpiX16: FEXT_T8I8I16_ins<"btnez", "cmpi">, cbranch16;
604 def BtnezT8SltX16: FEXT_T8I816_ins<"btnez", "slt">, cbranch16;
606 def BtnezT8SltuX16: FEXT_T8I816_ins<"btnez", "sltu">, cbranch16;
608 def BtnezT8SltiX16: FEXT_T8I8I16_ins<"btnez", "slti">, cbranch16;
610 def BtnezT8SltiuX16: FEXT_T8I8I16_ins<"btnez", "sltiu">,
614 // Format: CMP rx, ry MIPS16e
616 // To compare the contents of two GPRs.
618 def CmpRxRy16: FRR16R_ins<0b01010, "cmp", IIAlu> {
623 // Format: CMPI rx, immediate MIPS16e
624 // Purpose: Compare Immediate
625 // To compare a constant with the contents of a GPR.
627 def CmpiRxImm16: FRI16R_ins<0b01110, "cmpi", IIAlu> {
632 // Format: CMPI rx, immediate MIPS16e
633 // Purpose: Compare Immediate (Extended)
634 // To compare a constant with the contents of a GPR.
636 def CmpiRxImmX16: FEXT_RI16R_ins<0b01110, "cmpi", IIAlu> {
642 // Format: DIV rx, ry MIPS16e
643 // Purpose: Divide Word
644 // To divide 32-bit signed integers.
646 def DivRxRy16: FRR16_div_ins<0b11010, "div", IIAlu> {
651 // Format: DIVU rx, ry MIPS16e
652 // Purpose: Divide Unsigned Word
653 // To divide 32-bit unsigned integers.
655 def DivuRxRy16: FRR16_div_ins<0b11011, "divu", IIAlu> {
659 // Format: JAL target MIPS16e
660 // Purpose: Jump and Link
661 // To execute a procedure call within the current 256 MB-aligned
662 // region and preserve the current ISA.
665 def Jal16 : FJAL16_ins<0b0, "jal", IIAlu> {
667 let hasDelaySlot = 0; // not true, but we add the nop for now
673 // Format: JR ra MIPS16e
674 // Purpose: Jump Register Through Register ra
675 // To execute a branch to the instruction address in the return
679 def JrRa16: FRR16_JALRC_RA_only_ins<0, 0, "jr", IIAlu> {
681 let isIndirectBranch = 1;
682 let hasDelaySlot = 1;
687 def JrcRa16: FRR16_JALRC_RA_only_ins<1, 1, "jrc", IIAlu> {
689 let isIndirectBranch = 1;
694 def JrcRx16: FRR16_JALRC_ins<1, 1, 0, "jrc", IIAlu> {
696 let isIndirectBranch = 1;
701 // Format: LB ry, offset(rx) MIPS16e
702 // Purpose: Load Byte (Extended)
703 // To load a byte from memory as a signed value.
705 def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad{
706 let isCodeGenOnly = 1;
710 // Format: LBU ry, offset(rx) MIPS16e
711 // Purpose: Load Byte Unsigned (Extended)
712 // To load a byte from memory as a unsigned value.
714 def LbuRxRyOffMemX16:
715 FEXT_RRI16_mem_ins<0b10100, "lbu", mem16, IILoad>, MayLoad {
716 let isCodeGenOnly = 1;
720 // Format: LH ry, offset(rx) MIPS16e
721 // Purpose: Load Halfword signed (Extended)
722 // To load a halfword from memory as a signed value.
724 def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad{
725 let isCodeGenOnly = 1;
729 // Format: LHU ry, offset(rx) MIPS16e
730 // Purpose: Load Halfword unsigned (Extended)
731 // To load a halfword from memory as an unsigned value.
733 def LhuRxRyOffMemX16:
734 FEXT_RRI16_mem_ins<0b10100, "lhu", mem16, IILoad>, MayLoad {
735 let isCodeGenOnly = 1;
739 // Format: LI rx, immediate MIPS16e
740 // Purpose: Load Immediate
741 // To load a constant into a GPR.
743 def LiRxImm16: FRI16_ins<0b01101, "li", IIAlu>;
746 // Format: LI rx, immediate MIPS16e
747 // Purpose: Load Immediate (Extended)
748 // To load a constant into a GPR.
750 def LiRxImmX16: FEXT_RI16_ins<0b01101, "li", IIAlu>;
753 // Format: LW ry, offset(rx) MIPS16e
754 // Purpose: Load Word (Extended)
755 // To load a word from memory as a signed value.
757 def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad{
758 let isCodeGenOnly = 1;
761 // Format: LW rx, offset(sp) MIPS16e
762 // Purpose: Load Word (SP-Relative, Extended)
763 // To load an SP-relative word from memory as a signed value.
765 def LwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b10110, "lw", IILoad>, MayLoad{
770 // Format: MOVE r32, rz MIPS16e
772 // To move the contents of a GPR to a GPR.
774 def Move32R16: FI8_MOV32R16_ins<"move", IIAlu>;
777 // Format: MOVE ry, r32 MIPS16e
779 // To move the contents of a GPR to a GPR.
781 def MoveR3216: FI8_MOVR3216_ins<"move", IIAlu>;
784 // Format: MFHI rx MIPS16e
785 // Purpose: Move From HI Register
786 // To copy the special purpose HI register to a GPR.
788 def Mfhi16: FRR16_M_ins<0b10000, "mfhi", IIAlu> {
790 let neverHasSideEffects = 1;
794 // Format: MFLO rx MIPS16e
795 // Purpose: Move From LO Register
796 // To copy the special purpose LO register to a GPR.
798 def Mflo16: FRR16_M_ins<0b10010, "mflo", IIAlu> {
800 let neverHasSideEffects = 1;
804 // Pseudo Instruction for mult
806 def MultRxRy16: FMULT16_ins<"mult", IIAlu> {
807 let isCommutable = 1;
808 let neverHasSideEffects = 1;
812 def MultuRxRy16: FMULT16_ins<"multu", IIAlu> {
813 let isCommutable = 1;
814 let neverHasSideEffects = 1;
819 // Format: MULT rx, ry MIPS16e
820 // Purpose: Multiply Word
821 // To multiply 32-bit signed integers.
823 def MultRxRyRz16: FMULT16_LO_ins<"mult", IIAlu> {
824 let isCommutable = 1;
825 let neverHasSideEffects = 1;
830 // Format: MULTU rx, ry MIPS16e
831 // Purpose: Multiply Unsigned Word
832 // To multiply 32-bit unsigned integers.
834 def MultuRxRyRz16: FMULT16_LO_ins<"multu", IIAlu> {
835 let isCommutable = 1;
836 let neverHasSideEffects = 1;
841 // Format: NEG rx, ry MIPS16e
843 // To negate an integer value.
845 def NegRxRy16: FUnaryRR16_ins<0b11101, "neg", IIAlu>;
848 // Format: NOT rx, ry MIPS16e
850 // To complement an integer value
852 def NotRxRy16: FUnaryRR16_ins<0b01111, "not", IIAlu>;
855 // Format: OR rx, ry MIPS16e
857 // To do a bitwise logical OR.
859 def OrRxRxRy16: FRxRxRy16_ins<0b01101, "or", IIAlu>, ArithLogic16Defs<1>;
862 // Format: RESTORE {ra,}{s0/s1/s0-1,}{framesize}
863 // (All args are optional) MIPS16e
864 // Purpose: Restore Registers and Deallocate Stack Frame
865 // To deallocate a stack frame before exit from a subroutine,
866 // restoring return address and static registers, and adjusting
870 // fixed form for restoring RA and the frame
871 // for direct object emitter, encoding needs to be adjusted for the
874 let ra=1, s=0,s0=1,s1=1 in
876 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
877 "restore\t$$ra, $$s0, $$s1, $frame_size", [], IILoad >, MayLoad {
878 let isCodeGenOnly = 1;
879 let Defs = [S0, S1, RA, SP];
883 // Use Restore to increment SP since SP is not a Mip 16 register, this
884 // is an easy way to do that which does not require a register.
886 let ra=0, s=0,s0=0,s1=0 in
888 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
889 "restore\t$frame_size", [], IILoad >, MayLoad {
890 let isCodeGenOnly = 1;
896 // Format: SAVE {ra,}{s0/s1/s0-1,}{framesize} (All arguments are optional)
898 // Purpose: Save Registers and Set Up Stack Frame
899 // To set up a stack frame on entry to a subroutine,
900 // saving return address and static registers, and adjusting stack
902 let ra=1, s=1,s0=1,s1=1 in
904 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
905 "save\t$$ra, $$s0, $$s1, $frame_size", [], IIStore >, MayStore {
906 let isCodeGenOnly = 1;
907 let Uses = [RA, SP, S0, S1];
912 // Use Save to decrement the SP by a constant since SP is not
913 // a Mips16 register.
915 let ra=0, s=0,s0=0,s1=0 in
917 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
918 "save\t$frame_size", [], IIStore >, MayStore {
919 let isCodeGenOnly = 1;
924 // Format: SB ry, offset(rx) MIPS16e
925 // Purpose: Store Byte (Extended)
926 // To store a byte to memory.
929 FEXT_RRI16_mem2_ins<0b11000, "sb", mem16, IIStore>, MayStore;
932 // The Sel(T) instructions are pseudos
933 // T means that they use T8 implicitly.
936 // Format: SelBeqZ rd, rs, rt
937 // Purpose: if rt==0, do nothing
940 def SelBeqZ: Sel<"beqz">;
943 // Format: SelTBteqZCmp rd, rs, rl, rr
944 // Purpose: b = Cmp rl, rr.
945 // If b==0 then do nothing.
946 // if b!=0 then rd = rs
948 def SelTBteqZCmp: SelT<"bteqz", "cmp">;
951 // Format: SelTBteqZCmpi rd, rs, rl, rr
952 // Purpose: b = Cmpi rl, imm.
953 // If b==0 then do nothing.
954 // if b!=0 then rd = rs
956 def SelTBteqZCmpi: SeliT<"bteqz", "cmpi">;
959 // Format: SelTBteqZSlt rd, rs, rl, rr
960 // Purpose: b = Slt rl, rr.
961 // If b==0 then do nothing.
962 // if b!=0 then rd = rs
964 def SelTBteqZSlt: SelT<"bteqz", "slt">;
967 // Format: SelTBteqZSlti rd, rs, rl, rr
968 // Purpose: b = Slti rl, imm.
969 // If b==0 then do nothing.
970 // if b!=0 then rd = rs
972 def SelTBteqZSlti: SeliT<"bteqz", "slti">;
975 // Format: SelTBteqZSltu rd, rs, rl, rr
976 // Purpose: b = Sltu rl, rr.
977 // If b==0 then do nothing.
978 // if b!=0 then rd = rs
980 def SelTBteqZSltu: SelT<"bteqz", "sltu">;
983 // Format: SelTBteqZSltiu rd, rs, rl, rr
984 // Purpose: b = Sltiu rl, imm.
985 // If b==0 then do nothing.
986 // if b!=0 then rd = rs
988 def SelTBteqZSltiu: SeliT<"bteqz", "sltiu">;
991 // Format: SelBnez rd, rs, rt
992 // Purpose: if rt!=0, do nothing
995 def SelBneZ: Sel<"bnez">;
998 // Format: SelTBtneZCmp rd, rs, rl, rr
999 // Purpose: b = Cmp rl, rr.
1000 // If b!=0 then do nothing.
1001 // if b0=0 then rd = rs
1003 def SelTBtneZCmp: SelT<"btnez", "cmp">;
1006 // Format: SelTBtnezCmpi rd, rs, rl, rr
1007 // Purpose: b = Cmpi rl, imm.
1008 // If b!=0 then do nothing.
1009 // if b==0 then rd = rs
1011 def SelTBtneZCmpi: SeliT<"btnez", "cmpi">;
1014 // Format: SelTBtneZSlt rd, rs, rl, rr
1015 // Purpose: b = Slt rl, rr.
1016 // If b!=0 then do nothing.
1017 // if b==0 then rd = rs
1019 def SelTBtneZSlt: SelT<"btnez", "slt">;
1022 // Format: SelTBtneZSlti rd, rs, rl, rr
1023 // Purpose: b = Slti rl, imm.
1024 // If b!=0 then do nothing.
1025 // if b==0 then rd = rs
1027 def SelTBtneZSlti: SeliT<"btnez", "slti">;
1030 // Format: SelTBtneZSltu rd, rs, rl, rr
1031 // Purpose: b = Sltu rl, rr.
1032 // If b!=0 then do nothing.
1033 // if b==0 then rd = rs
1035 def SelTBtneZSltu: SelT<"btnez", "sltu">;
1038 // Format: SelTBtneZSltiu rd, rs, rl, rr
1039 // Purpose: b = Slti rl, imm.
1040 // If b!=0 then do nothing.
1041 // if b==0 then rd = rs
1043 def SelTBtneZSltiu: SeliT<"btnez", "sltiu">;
1046 // Format: SH ry, offset(rx) MIPS16e
1047 // Purpose: Store Halfword (Extended)
1048 // To store a halfword to memory.
1050 def ShRxRyOffMemX16:
1051 FEXT_RRI16_mem2_ins<0b11001, "sh", mem16, IIStore>, MayStore;
1054 // Format: SLL rx, ry, sa MIPS16e
1055 // Purpose: Shift Word Left Logical (Extended)
1056 // To execute a left-shift of a word by a fixed number of bits—0 to 31 bits.
1058 def SllX16: FEXT_SHIFT16_ins<0b00, "sll", IIAlu>;
1061 // Format: SLLV ry, rx MIPS16e
1062 // Purpose: Shift Word Left Logical Variable
1063 // To execute a left-shift of a word by a variable number of bits.
1065 def SllvRxRy16 : FRxRxRy16_ins<0b00100, "sllv", IIAlu>;
1067 // Format: SLTI rx, immediate MIPS16e
1068 // Purpose: Set on Less Than Immediate
1069 // To record the result of a less-than comparison with a constant.
1072 def SltiRxImm16: FRI16R_ins<0b01010, "slti", IIAlu> {
1077 // Format: SLTI rx, immediate MIPS16e
1078 // Purpose: Set on Less Than Immediate (Extended)
1079 // To record the result of a less-than comparison with a constant.
1082 def SltiRxImmX16: FEXT_RI16R_ins<0b01010, "slti", IIAlu> {
1086 def SltiCCRxImmX16: FEXT_CCRXI16_ins<"slti">;
1088 // Format: SLTIU rx, immediate MIPS16e
1089 // Purpose: Set on Less Than Immediate Unsigned
1090 // To record the result of a less-than comparison with a constant.
1093 def SltiuRxImm16: FRI16R_ins<0b01011, "sltiu", IIAlu> {
1098 // Format: SLTI rx, immediate MIPS16e
1099 // Purpose: Set on Less Than Immediate Unsigned (Extended)
1100 // To record the result of a less-than comparison with a constant.
1103 def SltiuRxImmX16: FEXT_RI16R_ins<0b01011, "sltiu", IIAlu> {
1107 // Format: SLTIU rx, immediate MIPS16e
1108 // Purpose: Set on Less Than Immediate Unsigned (Extended)
1109 // To record the result of a less-than comparison with a constant.
1111 def SltiuCCRxImmX16: FEXT_CCRXI16_ins<"sltiu">;
1114 // Format: SLT rx, ry MIPS16e
1115 // Purpose: Set on Less Than
1116 // To record the result of a less-than comparison.
1118 def SltRxRy16: FRR16R_ins<0b00010, "slt", IIAlu>{
1122 def SltCCRxRy16: FCCRR16_ins<"slt">;
1124 // Format: SLTU rx, ry MIPS16e
1125 // Purpose: Set on Less Than Unsigned
1126 // To record the result of an unsigned less-than comparison.
1128 def SltuRxRy16: FRR16R_ins<0b00011, "sltu", IIAlu>{
1132 def SltuRxRyRz16: FRRTR16_ins<"sltu"> {
1133 let isCodeGenOnly=1;
1138 def SltuCCRxRy16: FCCRR16_ins<"sltu">;
1140 // Format: SRAV ry, rx MIPS16e
1141 // Purpose: Shift Word Right Arithmetic Variable
1142 // To execute an arithmetic right-shift of a word by a variable
1145 def SravRxRy16: FRxRxRy16_ins<0b00111, "srav", IIAlu>;
1149 // Format: SRA rx, ry, sa MIPS16e
1150 // Purpose: Shift Word Right Arithmetic (Extended)
1151 // To execute an arithmetic right-shift of a word by a fixed
1152 // number of bits—1 to 8 bits.
1154 def SraX16: FEXT_SHIFT16_ins<0b11, "sra", IIAlu>;
1158 // Format: SRLV ry, rx MIPS16e
1159 // Purpose: Shift Word Right Logical Variable
1160 // To execute a logical right-shift of a word by a variable
1163 def SrlvRxRy16: FRxRxRy16_ins<0b00110, "srlv", IIAlu>;
1167 // Format: SRL rx, ry, sa MIPS16e
1168 // Purpose: Shift Word Right Logical (Extended)
1169 // To execute a logical right-shift of a word by a fixed
1170 // number of bits—1 to 31 bits.
1172 def SrlX16: FEXT_SHIFT16_ins<0b10, "srl", IIAlu>;
1175 // Format: SUBU rz, rx, ry MIPS16e
1176 // Purpose: Subtract Unsigned Word
1177 // To subtract 32-bit integers
1179 def SubuRxRyRz16: FRRR16_ins<0b11, "subu", IIAlu>, ArithLogic16Defs<0>;
1182 // Format: SW ry, offset(rx) MIPS16e
1183 // Purpose: Store Word (Extended)
1184 // To store a word to memory.
1186 def SwRxRyOffMemX16:
1187 FEXT_RRI16_mem2_ins<0b11011, "sw", mem16, IIStore>, MayStore;
1190 // Format: SW rx, offset(sp) MIPS16e
1191 // Purpose: Store Word rx (SP-Relative)
1192 // To store an SP-relative word to memory.
1194 def SwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b11010, "sw", IIStore>, MayStore;
1198 // Format: XOR rx, ry MIPS16e
1200 // To do a bitwise logical XOR.
1202 def XorRxRxRy16: FRxRxRy16_ins<0b01110, "xor", IIAlu>, ArithLogic16Defs<1>;
1204 class Mips16Pat<dag pattern, dag result> : Pat<pattern, result> {
1205 let Predicates = [InMips16Mode];
1208 // Unary Arith/Logic
1210 class ArithLogicU_pat<PatFrag OpNode, Instruction I> :
1211 Mips16Pat<(OpNode CPU16Regs:$r),
1214 def: ArithLogicU_pat<not, NotRxRy16>;
1215 def: ArithLogicU_pat<ineg, NegRxRy16>;
1217 class ArithLogic16_pat<SDNode OpNode, Instruction I> :
1218 Mips16Pat<(OpNode CPU16Regs:$l, CPU16Regs:$r),
1219 (I CPU16Regs:$l, CPU16Regs:$r)>;
1221 def: ArithLogic16_pat<add, AdduRxRyRz16>;
1222 def: ArithLogic16_pat<and, AndRxRxRy16>;
1223 def: ArithLogic16_pat<mul, MultRxRyRz16>;
1224 def: ArithLogic16_pat<or, OrRxRxRy16>;
1225 def: ArithLogic16_pat<sub, SubuRxRyRz16>;
1226 def: ArithLogic16_pat<xor, XorRxRxRy16>;
1228 // Arithmetic and logical instructions with 2 register operands.
1230 class ArithLogicI16_pat<SDNode OpNode, PatFrag imm_type, Instruction I> :
1231 Mips16Pat<(OpNode CPU16Regs:$in, imm_type:$imm),
1232 (I CPU16Regs:$in, imm_type:$imm)>;
1234 def: ArithLogicI16_pat<add, immSExt8, AddiuRxRxImm16>;
1235 def: ArithLogicI16_pat<add, immSExt16, AddiuRxRxImmX16>;
1236 def: ArithLogicI16_pat<shl, immZExt5, SllX16>;
1237 def: ArithLogicI16_pat<srl, immZExt5, SrlX16>;
1238 def: ArithLogicI16_pat<sra, immZExt5, SraX16>;
1240 class shift_rotate_reg16_pat<SDNode OpNode, Instruction I> :
1241 Mips16Pat<(OpNode CPU16Regs:$r, CPU16Regs:$ra),
1242 (I CPU16Regs:$r, CPU16Regs:$ra)>;
1244 def: shift_rotate_reg16_pat<shl, SllvRxRy16>;
1245 def: shift_rotate_reg16_pat<sra, SravRxRy16>;
1246 def: shift_rotate_reg16_pat<srl, SrlvRxRy16>;
1248 class LoadM16_pat<PatFrag OpNode, Instruction I> :
1249 Mips16Pat<(OpNode addr16:$addr), (I addr16:$addr)>;
1251 def: LoadM16_pat<sextloadi8, LbRxRyOffMemX16>;
1252 def: LoadM16_pat<zextloadi8, LbuRxRyOffMemX16>;
1253 def: LoadM16_pat<sextloadi16, LhRxRyOffMemX16>;
1254 def: LoadM16_pat<zextloadi16, LhuRxRyOffMemX16>;
1255 def: LoadM16_pat<load, LwRxRyOffMemX16>;
1257 class StoreM16_pat<PatFrag OpNode, Instruction I> :
1258 Mips16Pat<(OpNode CPU16Regs:$r, addr16:$addr),
1259 (I CPU16Regs:$r, addr16:$addr)>;
1261 def: StoreM16_pat<truncstorei8, SbRxRyOffMemX16>;
1262 def: StoreM16_pat<truncstorei16, ShRxRyOffMemX16>;
1263 def: StoreM16_pat<store, SwRxRyOffMemX16>;
1265 // Unconditional branch
1266 class UncondBranch16_pat<SDNode OpNode, Instruction I>:
1267 Mips16Pat<(OpNode bb:$imm16), (I bb:$imm16)> {
1268 let Predicates = [InMips16Mode];
1271 def : Mips16Pat<(MipsJmpLink (i32 tglobaladdr:$dst)),
1272 (Jal16 tglobaladdr:$dst)>;
1274 def : Mips16Pat<(MipsJmpLink (i32 texternalsym:$dst)),
1275 (Jal16 texternalsym:$dst)>;
1279 (brind CPU16Regs:$rs),
1280 (JrcRx16 CPU16Regs:$rs)>;
1282 // Jump and Link (Call)
1283 let isCall=1, hasDelaySlot=0 in
1285 FRR16_JALRC<0, 0, 0, (outs), (ins CPU16Regs:$rs),
1286 "jalrc \t$rs", [(MipsJmpLink CPU16Regs:$rs)], IIBranch>;
1289 let isReturn=1, isTerminator=1, hasDelaySlot=1, isBarrier=1, hasCtrlDep=1,
1290 hasExtraSrcRegAllocReq = 1 in
1291 def RetRA16 : MipsPseudo16<(outs), (ins), "", [(MipsRet)]>;
1296 class SetCC_R16<PatFrag cond_op, Instruction I>:
1297 Mips16Pat<(cond_op CPU16Regs:$rx, CPU16Regs:$ry),
1298 (I CPU16Regs:$rx, CPU16Regs:$ry)>;
1300 class SetCC_I16<PatFrag cond_op, PatLeaf imm_type, Instruction I>:
1301 Mips16Pat<(cond_op CPU16Regs:$rx, imm_type:$imm16),
1302 (I CPU16Regs:$rx, imm_type:$imm16)>;
1305 def: Mips16Pat<(i32 addr16:$addr),
1306 (AddiuRxRyOffMemX16 addr16:$addr)>;
1309 // Large (>16 bit) immediate loads
1310 def : Mips16Pat<(i32 imm:$imm),
1311 (OrRxRxRy16 (SllX16 (LiRxImmX16 (HI16 imm:$imm)), 16),
1312 (LiRxImmX16 (LO16 imm:$imm)))>;
1314 // Carry MipsPatterns
1315 def : Mips16Pat<(subc CPU16Regs:$lhs, CPU16Regs:$rhs),
1316 (SubuRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1317 def : Mips16Pat<(addc CPU16Regs:$lhs, CPU16Regs:$rhs),
1318 (AdduRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1319 def : Mips16Pat<(addc CPU16Regs:$src, immSExt16:$imm),
1320 (AddiuRxRxImmX16 CPU16Regs:$src, imm:$imm)>;
1323 // Some branch conditional patterns are not generated by llvm at this time.
1324 // Some are for seemingly arbitrary reasons not used: i.e. with signed number
1325 // comparison they are used and for unsigned a different pattern is used.
1326 // I am pushing upstream from the full mips16 port and it seemed that I needed
1327 // these earlier and the mips32 port has these but now I cannot create test
1328 // cases that use these patterns. While I sort this all out I will leave these
1329 // extra patterns commented out and if I can be sure they are really not used,
1330 // I will delete the code. I don't want to check the code in uncommented without
1331 // a valid test case. In some cases, the compiler is generating patterns with
1332 // setcc instead and earlier I had implemented setcc first so may have masked
1333 // the problem. The setcc variants are suboptimal for mips16 so I may wantto
1334 // figure out how to enable the brcond patterns or else possibly new
1335 // combinations of of brcond and setcc.
1341 <(brcond (i32 (seteq CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1342 (BteqzT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1347 <(brcond (i32 (seteq CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1348 (BteqzT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1352 <(brcond (i32 (seteq CPU16Regs:$rx, 0)), bb:$targ16),
1353 (BeqzRxImmX16 CPU16Regs:$rx, bb:$targ16)
1357 // bcond-setgt (do we need to have this pair of setlt, setgt??)
1360 <(brcond (i32 (setgt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1361 (BtnezT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1368 <(brcond (i32 (setge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1369 (BteqzT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1373 // never called because compiler transforms a >= k to a > (k-1)
1375 <(brcond (i32 (setge CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1376 (BteqzT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1383 <(brcond (i32 (setlt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1384 (BtnezT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1388 <(brcond (i32 (setlt CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1389 (BtnezT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1396 <(brcond (i32 (setle CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1397 (BteqzT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1404 <(brcond (i32 (setne CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1405 (BtnezT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1409 <(brcond (i32 (setne CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1410 (BtnezT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1414 <(brcond (i32 (setne CPU16Regs:$rx, 0)), bb:$targ16),
1415 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1419 // This needs to be there but I forget which code will generate it
1422 <(brcond CPU16Regs:$rx, bb:$targ16),
1423 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1432 // <(brcond (i32 (setugt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1433 // (BtnezT8SltuX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1440 // <(brcond (i32 (setuge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1441 // (BteqzT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1449 // <(brcond (i32 (setult CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1450 // (BtnezT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1453 def: UncondBranch16_pat<br, BimmX16>;
1456 def: Mips16Pat<(i32 immSExt16:$in),
1457 (AddiuRxRxImmX16 (Move32R16 ZERO), immSExt16:$in)>;
1459 def: Mips16Pat<(i32 immZExt16:$in), (LiRxImmX16 immZExt16:$in)>;
1465 <(MipsDivRem CPU16Regs:$rx, CPU16Regs:$ry),
1466 (DivRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1472 <(MipsDivRemU CPU16Regs:$rx, CPU16Regs:$ry),
1473 (DivuRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1478 // if !(a < b) x = y
1480 def : Mips16Pat<(select (i32 (setge CPU16Regs:$a, CPU16Regs:$b)),
1481 CPU16Regs:$x, CPU16Regs:$y),
1482 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1483 CPU16Regs:$a, CPU16Regs:$b)>;
1490 def : Mips16Pat<(select (i32 (setgt CPU16Regs:$a, CPU16Regs:$b)),
1491 CPU16Regs:$x, CPU16Regs:$y),
1492 (SelTBtneZSlt CPU16Regs:$x, CPU16Regs:$y,
1493 CPU16Regs:$b, CPU16Regs:$a)>;
1498 // if !(a < b) x = y;
1501 (select (i32 (setuge CPU16Regs:$a, CPU16Regs:$b)),
1502 CPU16Regs:$x, CPU16Regs:$y),
1503 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1504 CPU16Regs:$a, CPU16Regs:$b)>;
1511 def : Mips16Pat<(select (i32 (setugt CPU16Regs:$a, CPU16Regs:$b)),
1512 CPU16Regs:$x, CPU16Regs:$y),
1513 (SelTBtneZSltu CPU16Regs:$x, CPU16Regs:$y,
1514 CPU16Regs:$b, CPU16Regs:$a)>;
1518 // due to an llvm optimization, i don't think that this will ever
1519 // be used. This is transformed into x = (a > k-1)?x:y
1524 // (select (i32 (setge CPU16Regs:$lhs, immSExt16:$rhs)),
1525 // CPU16Regs:$T, CPU16Regs:$F),
1526 // (SelTBteqZSlti CPU16Regs:$T, CPU16Regs:$F,
1527 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1530 // (select (i32 (setuge CPU16Regs:$lhs, immSExt16:$rhs)),
1531 // CPU16Regs:$T, CPU16Regs:$F),
1532 // (SelTBteqZSltiu CPU16Regs:$T, CPU16Regs:$F,
1533 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1538 // if !(a < k) x = y;
1541 (select (i32 (setlt CPU16Regs:$a, immSExt16:$b)),
1542 CPU16Regs:$x, CPU16Regs:$y),
1543 (SelTBtneZSlti CPU16Regs:$x, CPU16Regs:$y,
1544 CPU16Regs:$a, immSExt16:$b)>;
1550 // x = (a <= b)? x : y
1554 def : Mips16Pat<(select (i32 (setle CPU16Regs:$a, CPU16Regs:$b)),
1555 CPU16Regs:$x, CPU16Regs:$y),
1556 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1557 CPU16Regs:$b, CPU16Regs:$a)>;
1561 // x = (a <= b)? x : y
1565 def : Mips16Pat<(select (i32 (setule CPU16Regs:$a, CPU16Regs:$b)),
1566 CPU16Regs:$x, CPU16Regs:$y),
1567 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1568 CPU16Regs:$b, CPU16Regs:$a)>;
1572 // x = (a == b)? x : y
1574 // if (a != b) x = y
1576 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, CPU16Regs:$b)),
1577 CPU16Regs:$x, CPU16Regs:$y),
1578 (SelTBteqZCmp CPU16Regs:$x, CPU16Regs:$y,
1579 CPU16Regs:$b, CPU16Regs:$a)>;
1583 // x = (a == 0)? x : y
1585 // if (a != 0) x = y
1587 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, 0)),
1588 CPU16Regs:$x, CPU16Regs:$y),
1589 (SelBeqZ CPU16Regs:$x, CPU16Regs:$y,
1595 // x = (a == k)? x : y
1597 // if (a != k) x = y
1599 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, immZExt16:$k)),
1600 CPU16Regs:$x, CPU16Regs:$y),
1601 (SelTBteqZCmpi CPU16Regs:$x, CPU16Regs:$y,
1602 CPU16Regs:$a, immZExt16:$k)>;
1607 // x = (a != b)? x : y
1609 // if (a == b) x = y
1612 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, CPU16Regs:$b)),
1613 CPU16Regs:$x, CPU16Regs:$y),
1614 (SelTBtneZCmp CPU16Regs:$x, CPU16Regs:$y,
1615 CPU16Regs:$b, CPU16Regs:$a)>;
1619 // x = (a != 0)? x : y
1621 // if (a == 0) x = y
1623 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, 0)),
1624 CPU16Regs:$x, CPU16Regs:$y),
1625 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1633 def : Mips16Pat<(select CPU16Regs:$a,
1634 CPU16Regs:$x, CPU16Regs:$y),
1635 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1641 // x = (a != k)? x : y
1643 // if (a == k) x = y
1645 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, immZExt16:$k)),
1646 CPU16Regs:$x, CPU16Regs:$y),
1647 (SelTBtneZCmpi CPU16Regs:$x, CPU16Regs:$y,
1648 CPU16Regs:$a, immZExt16:$k)>;
1651 // When writing C code to test setxx these patterns,
1652 // some will be transformed into
1653 // other things. So we test using C code but using -O3 and -O0
1658 <(seteq CPU16Regs:$lhs,CPU16Regs:$rhs),
1659 (SltiuCCRxImmX16 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs), 1)>;
1662 <(seteq CPU16Regs:$lhs, 0),
1663 (SltiuCCRxImmX16 CPU16Regs:$lhs, 1)>;
1671 <(setge CPU16Regs:$lhs, CPU16Regs:$rhs),
1672 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1676 // For constants, llvm transforms this to:
1677 // x > (k -1) and then reverses the operands to use setlt. So this pattern
1678 // is not used now by the compiler. (Presumably checking that k-1 does not
1679 // overflow). The compiler never uses this at a the current time, due to
1680 // other optimizations.
1683 // <(setge CPU16Regs:$lhs, immSExt16:$rhs),
1684 // (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, immSExt16:$rhs),
1685 // (LiRxImmX16 1))>;
1687 // This catches the x >= -32768 case by transforming it to x > -32769
1690 <(setgt CPU16Regs:$lhs, -32769),
1691 (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, -32768),
1700 <(setgt CPU16Regs:$lhs, CPU16Regs:$rhs),
1701 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1707 <(setle CPU16Regs:$lhs, CPU16Regs:$rhs),
1708 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImm16 1))>;
1713 def: SetCC_R16<setlt, SltCCRxRy16>;
1715 def: SetCC_I16<setlt, immSExt16, SltiCCRxImmX16>;
1721 <(setne CPU16Regs:$lhs,CPU16Regs:$rhs),
1722 (SltuCCRxRy16 (LiRxImmX16 0),
1723 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs))>;
1730 <(setuge CPU16Regs:$lhs, CPU16Regs:$rhs),
1731 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1734 // this pattern will never be used because the compiler will transform
1735 // x >= k to x > (k - 1) and then use SLT
1738 // <(setuge CPU16Regs:$lhs, immZExt16:$rhs),
1739 // (XorRxRxRy16 (SltiuCCRxImmX16 CPU16Regs:$lhs, immZExt16:$rhs),
1740 // (LiRxImmX16 1))>;
1746 <(setugt CPU16Regs:$lhs, CPU16Regs:$rhs),
1747 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1753 <(setule CPU16Regs:$lhs, CPU16Regs:$rhs),
1754 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImmX16 1))>;
1759 def: SetCC_R16<setult, SltuCCRxRy16>;
1761 def: SetCC_I16<setult, immSExt16, SltiuCCRxImmX16>;
1763 def: Mips16Pat<(add CPU16Regs:$hi, (MipsLo tglobaladdr:$lo)),
1764 (AddiuRxRxImmX16 CPU16Regs:$hi, tglobaladdr:$lo)>;
1768 def : Mips16Pat<(MipsHi tglobaladdr:$in),
1769 (SllX16 (LiRxImmX16 tglobaladdr:$in), 16)>;
1770 def : Mips16Pat<(MipsHi tjumptable:$in),
1771 (SllX16 (LiRxImmX16 tjumptable:$in), 16)>;
1772 def : Mips16Pat<(MipsHi tglobaltlsaddr:$in),
1773 (SllX16 (LiRxImmX16 tglobaltlsaddr:$in), 16)>;
1776 class Wrapper16Pat<SDNode node, Instruction ADDiuOp, RegisterClass RC>:
1777 Mips16Pat<(MipsWrapper RC:$gp, node:$in),
1778 (ADDiuOp RC:$gp, node:$in)>;
1781 def : Wrapper16Pat<tglobaladdr, AddiuRxRxImmX16, CPU16Regs>;
1782 def : Wrapper16Pat<tglobaltlsaddr, AddiuRxRxImmX16, CPU16Regs>;
1784 def : Mips16Pat<(i32 (extloadi8 addr16:$src)),
1785 (LbuRxRyOffMemX16 addr16:$src)>;
1786 def : Mips16Pat<(i32 (extloadi16 addr16:$src)),
1787 (LhuRxRyOffMemX16 addr16:$src)>;