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$$sp, $imm # 16 bit inst", itin>;
50 // RI instruction format
54 class F2RI16_ins<bits<5> _op, string asmstr,
56 FRI16<_op, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_, simm16:$imm),
57 !strconcat(asmstr, "\t$rx, $imm\t# 16 bit inst"), [], itin> {
58 let Constraints = "$rx_ = $rx";
62 // Compare a register and immediate and place result in CC
65 // EXT-CCRR Instruction format
67 class FEXT_CCRXI16_ins<bits<5> _op, string asmstr,
69 FEXT_RI16<_op, (outs CPU16Regs:$cc), (ins CPU16Regs:$rx, simm16:$imm),
70 !strconcat(asmstr, "\t$rx, $imm\n\tmove\t$cc, $$t8"), [], itin> {
74 // JAL and JALX instruction format
76 class FJAL16_ins<bits<1> _X, string asmstr,
78 FJAL16<_X, (outs), (ins simm20:$imm),
79 !strconcat(asmstr, "\t$imm\n\tnop"),[],
84 // EXT-I instruction format
86 class FEXT_I16_ins<bits<5> eop, string asmstr, InstrItinClass itin> :
87 FEXT_I16<eop, (outs), (ins brtarget:$imm16),
88 !strconcat(asmstr, "\t$imm16"),[], itin>;
91 // EXT-I8 instruction format
94 class FEXT_I816_ins_base<bits<3> _func, string asmstr,
95 string asmstr2, InstrItinClass itin>:
96 FEXT_I816<_func, (outs), (ins simm16:$imm), !strconcat(asmstr, asmstr2),
99 class FEXT_I816_ins<bits<3> _func, string asmstr,
100 InstrItinClass itin>:
101 FEXT_I816_ins_base<_func, asmstr, "\t$imm", itin>;
103 class FEXT_I816_SP_ins<bits<3> _func, string asmstr,
104 InstrItinClass itin>:
105 FEXT_I816_ins_base<_func, asmstr, "\t$$sp, $imm", itin>;
108 // Assembler formats in alphabetical order.
109 // Natural and pseudos are mixed together.
111 // Compare two registers and place result in CC
112 // Implicit use of T8
114 // CC-RR Instruction format
116 class FCCRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
117 FRR16<f, (outs CPU16Regs:$cc), (ins CPU16Regs:$rx, CPU16Regs:$ry),
118 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$cc, $$t8"), [], itin> {
123 // EXT-RI instruction format
126 class FEXT_RI16_ins_base<bits<5> _op, string asmstr, string asmstr2,
127 InstrItinClass itin>:
128 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins simm16:$imm),
129 !strconcat(asmstr, asmstr2), [], itin>;
131 class FEXT_RI16_ins<bits<5> _op, string asmstr,
132 InstrItinClass itin>:
133 FEXT_RI16_ins_base<_op, asmstr, "\t$rx, $imm", itin>;
135 class FEXT_RI16_PC_ins<bits<5> _op, string asmstr, InstrItinClass itin>:
136 FEXT_RI16_ins_base<_op, asmstr, "\t$rx, $$pc, $imm", itin>;
138 class FEXT_RI16_B_ins<bits<5> _op, string asmstr,
139 InstrItinClass itin>:
140 FEXT_RI16<_op, (outs), (ins CPU16Regs:$rx, brtarget:$imm),
141 !strconcat(asmstr, "\t$rx, $imm"), [], itin>;
143 class FEXT_2RI16_ins<bits<5> _op, string asmstr,
144 InstrItinClass itin>:
145 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_, simm16:$imm),
146 !strconcat(asmstr, "\t$rx, $imm"), [], itin> {
147 let Constraints = "$rx_ = $rx";
151 // this has an explicit sp argument that we ignore to work around a problem
153 class FEXT_RI16_SP_explicit_ins<bits<5> _op, string asmstr,
154 InstrItinClass itin>:
155 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPUSPReg:$ry, simm16:$imm),
156 !strconcat(asmstr, "\t$rx, $imm ( $ry ); "), [], itin>;
159 // EXT-RRI instruction format
162 class FEXT_RRI16_mem_ins<bits<5> op, string asmstr, Operand MemOpnd,
163 InstrItinClass itin>:
164 FEXT_RRI16<op, (outs CPU16Regs:$ry), (ins MemOpnd:$addr),
165 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
167 class FEXT_RRI16_mem2_ins<bits<5> op, string asmstr, Operand MemOpnd,
168 InstrItinClass itin>:
169 FEXT_RRI16<op, (outs ), (ins CPU16Regs:$ry, MemOpnd:$addr),
170 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
174 // EXT-RRI-A instruction format
177 class FEXT_RRI_A16_mem_ins<bits<1> op, string asmstr, Operand MemOpnd,
178 InstrItinClass itin>:
179 FEXT_RRI_A16<op, (outs CPU16Regs:$ry), (ins MemOpnd:$addr),
180 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
183 // EXT-SHIFT instruction format
185 class FEXT_SHIFT16_ins<bits<2> _f, string asmstr, InstrItinClass itin>:
186 FEXT_SHIFT16<_f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry, shamt:$sa),
187 !strconcat(asmstr, "\t$rx, $ry, $sa"), [], itin>;
192 class FEXT_T8I816_ins<bits<3> _func, string asmstr, string asmstr2,
193 InstrItinClass itin>:
194 FEXT_I816<_func, (outs),
195 (ins CPU16Regs:$rx, CPU16Regs:$ry, brtarget:$imm),
196 !strconcat(asmstr2, !strconcat("\t$rx, $ry\n\t",
197 !strconcat(asmstr, "\t$imm"))),[], itin> {
204 class FEXT_T8I8I16_ins<bits<3> _func, string asmstr, string asmstr2,
205 InstrItinClass itin>:
206 FEXT_I816<_func, (outs),
207 (ins CPU16Regs:$rx, simm16:$imm, brtarget:$targ),
208 !strconcat(asmstr2, !strconcat("\t$rx, $imm\n\t",
209 !strconcat(asmstr, "\t$targ"))), [], itin> {
216 // I8_MOVR32 instruction format (used only by the MOVR32 instructio
218 class FI8_MOVR3216_ins<string asmstr, InstrItinClass itin>:
219 FI8_MOVR3216<(outs CPU16Regs:$rz), (ins CPURegs:$r32),
220 !strconcat(asmstr, "\t$rz, $r32"), [], itin>;
223 // I8_MOV32R instruction format (used only by MOV32R instruction)
226 class FI8_MOV32R16_ins<string asmstr, InstrItinClass itin>:
227 FI8_MOV32R16<(outs CPURegs:$r32), (ins CPU16Regs:$rz),
228 !strconcat(asmstr, "\t$r32, $rz"), [], itin>;
231 // This are pseudo formats for multiply
232 // This first one can be changed to non pseudo now.
236 class FMULT16_ins<string asmstr, InstrItinClass itin> :
237 MipsPseudo16<(outs), (ins CPU16Regs:$rx, CPU16Regs:$ry),
238 !strconcat(asmstr, "\t$rx, $ry"), []>;
243 class FMULT16_LO_ins<string asmstr, InstrItinClass itin> :
244 MipsPseudo16<(outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
245 !strconcat(asmstr, "\t$rx, $ry\n\tmflo\t$rz"), []> {
250 // RR-type instruction format
253 class FRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
254 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
255 !strconcat(asmstr, "\t$rx, $ry"), [], itin> {
258 class FRRTR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
259 FRR16<f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
260 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$rz, $$t8"), [], itin> ;
263 // maybe refactor but need a $zero as a dummy first parameter
265 class FRR16_div_ins<bits<5> f, string asmstr, InstrItinClass itin> :
266 FRR16<f, (outs ), (ins CPU16Regs:$rx, CPU16Regs:$ry),
267 !strconcat(asmstr, "\t$$zero, $rx, $ry"), [], itin> ;
269 class FUnaryRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
270 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
271 !strconcat(asmstr, "\t$rx, $ry"), [], itin> ;
274 class FRR16_M_ins<bits<5> f, string asmstr,
275 InstrItinClass itin> :
276 FRR16<f, (outs CPU16Regs:$rx), (ins),
277 !strconcat(asmstr, "\t$rx"), [], itin>;
279 class FRxRxRy16_ins<bits<5> f, string asmstr,
280 InstrItinClass itin> :
281 FRR16<f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
282 !strconcat(asmstr, "\t$rz, $ry"),
284 let Constraints = "$rx = $rz";
288 class FRR16_JALRC_RA_only_ins<bits<1> nd_, bits<1> l_,
289 string asmstr, InstrItinClass itin>:
290 FRR16_JALRC<nd_, l_, 1, (outs), (ins), !strconcat(asmstr, "\t $$ra"),
294 class FRR16_JALRC_ins<bits<1> nd, bits<1> l, bits<1> ra,
295 string asmstr, InstrItinClass itin>:
296 FRR16_JALRC<nd, l, ra, (outs), (ins CPU16Regs:$rx),
297 !strconcat(asmstr, "\t $rx"), [], itin> ;
300 // RRR-type instruction format
303 class FRRR16_ins<bits<2> _f, string asmstr, InstrItinClass itin> :
304 FRRR16<_f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
305 !strconcat(asmstr, "\t$rz, $rx, $ry"), [], itin>;
308 // These Sel patterns support the generation of conditional move
309 // pseudo instructions.
311 // The nomenclature uses the components making up the pseudo and may
312 // be a bit counter intuitive when compared with the end result we seek.
313 // For example using a bqez in the example directly below results in the
314 // conditional move being done if the tested register is not zero.
315 // I considered in easier to check by keeping the pseudo consistent with
316 // it's components but it could have been done differently.
318 // The simplest case is when can test and operand directly and do the
319 // conditional move based on a simple mips16 conditional
320 // branch instruction.
322 // if $op == beqz or bnez:
327 // if $op == beqz, then if $rt != 0, then the conditional assignment
328 // $rd = $rs is done.
330 // if $op == bnez, then if $rt == 0, then the conditional assignment
331 // $rd = $rs is done.
333 // So this pseudo class only has one operand, i.e. op
335 class Sel<bits<5> f1, string op, InstrItinClass itin>:
336 MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
338 !strconcat(op, "\t$rt, .+4\n\t\n\tmove $rd, $rs"), [], itin,
341 let Constraints = "$rd = $rd_";
345 // The next two instruction classes allow for an operand which tests
346 // two operands and returns a value in register T8 and
347 //then does a conditional branch based on the value of T8
350 // op2 can be cmpi or slti/sltiu
351 // op1 can bteqz or btnez
352 // the operands for op2 are a register and a signed constant
354 // $op2 $t, $imm ;test register t and branch conditionally
355 // $op1 .+4 ;op1 is a conditional branch
359 class SeliT<bits<5> f1, string op1, bits<5> f2, string op2,
360 InstrItinClass itin>:
361 MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
362 CPU16Regs:$rl, simm16:$imm),
364 !strconcat("\t$rl, $imm\n\t",
365 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin,
368 let Constraints = "$rd = $rd_";
372 // op2 can be cmp or slt/sltu
373 // op1 can be bteqz or btnez
374 // the operands for op2 are two registers
375 // op1 is a conditional branch
378 // $op2 $rl, $rr ;test registers rl,rr
379 // $op1 .+4 ;op2 is a conditional branch
383 class SelT<bits<5> f1, string op1, bits<5> f2, string op2,
384 InstrItinClass itin>:
385 MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
386 CPU16Regs:$rl, CPU16Regs:$rr),
388 !strconcat("\t$rl, $rr\n\t",
389 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin,
392 let Constraints = "$rd = $rd_";
398 def imm32: Operand<i32>;
401 MipsPseudo16<(outs), (ins imm32:$imm), "\t.word $imm", []>;
404 MipsPseudo16<(outs), (ins CPU16Regs:$rx, imm32:$imm),
405 "lw\t$rx, 1f\n\tb\t2f\n\t.align\t2\n1: \t.word\t$imm\n2:", []>;
409 // Some general instruction class info
413 class ArithLogic16Defs<bit isCom=0> {
415 bit isCommutable = isCom;
416 bit isReMaterializable = 1;
417 bit neverHasSideEffects = 1;
422 bit isTerminator = 1;
428 bit isTerminator = 1;
440 // Format: ADDIU rx, immediate MIPS16e
441 // Purpose: Add Immediate Unsigned Word (2-Operand, Extended)
442 // To add a constant to a 32-bit integer.
444 def AddiuRxImmX16: FEXT_RI16_ins<0b01001, "addiu", IIAlu>;
446 def AddiuRxRxImm16: F2RI16_ins<0b01001, "addiu", IIAlu>,
447 ArithLogic16Defs<0> {
448 let AddedComplexity = 5;
450 def AddiuRxRxImmX16: FEXT_2RI16_ins<0b01001, "addiu", IIAlu>,
453 def AddiuRxRyOffMemX16:
454 FEXT_RRI_A16_mem_ins<0, "addiu", mem16_ea, IIAlu>;
458 // Format: ADDIU rx, pc, immediate MIPS16e
459 // Purpose: Add Immediate Unsigned Word (3-Operand, PC-Relative, Extended)
460 // To add a constant to the program counter.
462 def AddiuRxPcImmX16: FEXT_RI16_PC_ins<0b00001, "addiu", IIAlu>;
465 // Format: ADDIU sp, immediate MIPS16e
466 // Purpose: Add Immediate Unsigned Word (2-Operand, SP-Relative, Extended)
467 // To add a constant to the stack pointer.
470 : FI816_SP_ins<0b011, "addiu", IIAlu> {
473 let AddedComplexity = 5;
477 : FEXT_I816_SP_ins<0b011, "addiu", IIAlu> {
483 // Format: ADDU rz, rx, ry MIPS16e
484 // Purpose: Add Unsigned Word (3-Operand)
485 // To add 32-bit integers.
488 def AdduRxRyRz16: FRRR16_ins<01, "addu", IIAlu>, ArithLogic16Defs<1>;
491 // Format: AND rx, ry MIPS16e
493 // To do a bitwise logical AND.
495 def AndRxRxRy16: FRxRxRy16_ins<0b01100, "and", IIAlu>, ArithLogic16Defs<1>;
499 // Format: BEQZ rx, offset MIPS16e
500 // Purpose: Branch on Equal to Zero (Extended)
501 // To test a GPR then do a PC-relative conditional branch.
503 def BeqzRxImmX16: FEXT_RI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
505 // Format: B offset MIPS16e
506 // Purpose: Unconditional Branch
507 // To do an unconditional PC-relative branch.
509 def BimmX16: FEXT_I16_ins<0b00010, "b", IIAlu>, branch16;
512 // Format: BNEZ rx, offset MIPS16e
513 // Purpose: Branch on Not Equal to Zero (Extended)
514 // To test a GPR then do a PC-relative conditional branch.
516 def BnezRxImmX16: FEXT_RI16_B_ins<0b00101, "bnez", IIAlu>, cbranch16;
519 // Format: BTEQZ offset MIPS16e
520 // Purpose: Branch on T Equal to Zero (Extended)
521 // To test special register T then do a PC-relative conditional branch.
523 def BteqzX16: FEXT_I816_ins<0b000, "bteqz", IIAlu>, cbranch16;
525 def BteqzT8CmpX16: FEXT_T8I816_ins<0b000, "bteqz", "cmp", IIAlu>, cbranch16;
527 def BteqzT8CmpiX16: FEXT_T8I8I16_ins<0b000, "bteqz", "cmpi", IIAlu>,
530 def BteqzT8SltX16: FEXT_T8I816_ins<0b000, "bteqz", "slt", IIAlu>, cbranch16;
532 def BteqzT8SltuX16: FEXT_T8I816_ins<0b000, "bteqz", "sltu", IIAlu>, cbranch16;
534 def BteqzT8SltiX16: FEXT_T8I8I16_ins<0b000, "bteqz", "slti", IIAlu>, cbranch16;
536 def BteqzT8SltiuX16: FEXT_T8I8I16_ins<0b000, "bteqz", "sltiu", IIAlu>,
540 // Format: BTNEZ offset MIPS16e
541 // Purpose: Branch on T Not Equal to Zero (Extended)
542 // To test special register T then do a PC-relative conditional branch.
544 def BtnezX16: FEXT_I816_ins<0b001, "btnez", IIAlu> ,cbranch16;
546 def BtnezT8CmpX16: FEXT_T8I816_ins<0b000, "btnez", "cmp", IIAlu>, cbranch16;
548 def BtnezT8CmpiX16: FEXT_T8I8I16_ins<0b000, "btnez", "cmpi", IIAlu>, cbranch16;
550 def BtnezT8SltX16: FEXT_T8I816_ins<0b000, "btnez", "slt", IIAlu>, cbranch16;
552 def BtnezT8SltuX16: FEXT_T8I816_ins<0b000, "btnez", "sltu", IIAlu>, cbranch16;
554 def BtnezT8SltiX16: FEXT_T8I8I16_ins<0b000, "btnez", "slti", IIAlu>, cbranch16;
556 def BtnezT8SltiuX16: FEXT_T8I8I16_ins<0b000, "btnez", "sltiu", IIAlu>,
560 // Format: DIV rx, ry MIPS16e
561 // Purpose: Divide Word
562 // To divide 32-bit signed integers.
564 def DivRxRy16: FRR16_div_ins<0b11010, "div", IIAlu> {
569 // Format: DIVU rx, ry MIPS16e
570 // Purpose: Divide Unsigned Word
571 // To divide 32-bit unsigned integers.
573 def DivuRxRy16: FRR16_div_ins<0b11011, "divu", IIAlu> {
577 // Format: JAL target MIPS16e
578 // Purpose: Jump and Link
579 // To execute a procedure call within the current 256 MB-aligned
580 // region and preserve the current ISA.
583 def Jal16 : FJAL16_ins<0b0, "jal", IIAlu> {
585 let hasDelaySlot = 0; // not true, but we add the nop for now
591 // Format: JR ra MIPS16e
592 // Purpose: Jump Register Through Register ra
593 // To execute a branch to the instruction address in the return
597 def JrRa16: FRR16_JALRC_RA_only_ins<0, 0, "jr", IIAlu> {
599 let isIndirectBranch = 1;
600 let hasDelaySlot = 1;
605 def JrcRa16: FRR16_JALRC_RA_only_ins<0, 0, "jrc", IIAlu> {
607 let isIndirectBranch = 1;
612 def JrcRx16: FRR16_JALRC_ins<1, 1, 0, "jrc", IIAlu> {
614 let isIndirectBranch = 1;
619 // Format: LB ry, offset(rx) MIPS16e
620 // Purpose: Load Byte (Extended)
621 // To load a byte from memory as a signed value.
623 def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad;
626 // Format: LBU ry, offset(rx) MIPS16e
627 // Purpose: Load Byte Unsigned (Extended)
628 // To load a byte from memory as a unsigned value.
630 def LbuRxRyOffMemX16:
631 FEXT_RRI16_mem_ins<0b10100, "lbu", mem16, IILoad>, MayLoad;
634 // Format: LH ry, offset(rx) MIPS16e
635 // Purpose: Load Halfword signed (Extended)
636 // To load a halfword from memory as a signed value.
638 def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad;
641 // Format: LHU ry, offset(rx) MIPS16e
642 // Purpose: Load Halfword unsigned (Extended)
643 // To load a halfword from memory as an unsigned value.
645 def LhuRxRyOffMemX16:
646 FEXT_RRI16_mem_ins<0b10100, "lhu", mem16, IILoad>, MayLoad;
649 // Format: LI rx, immediate MIPS16e
650 // Purpose: Load Immediate (Extended)
651 // To load a constant into a GPR.
653 def LiRxImmX16: FEXT_RI16_ins<0b01101, "li", IIAlu>;
656 // Format: LW ry, offset(rx) MIPS16e
657 // Purpose: Load Word (Extended)
658 // To load a word from memory as a signed value.
660 def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad;
662 // Format: LW rx, offset(sp) MIPS16e
663 // Purpose: Load Word (SP-Relative, Extended)
664 // To load an SP-relative word from memory as a signed value.
666 def LwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b10110, "lw", IILoad>, MayLoad{
671 // Format: MOVE r32, rz MIPS16e
673 // To move the contents of a GPR to a GPR.
675 def Move32R16: FI8_MOV32R16_ins<"move", IIAlu>;
678 // Format: MOVE ry, r32 MIPS16e
680 // To move the contents of a GPR to a GPR.
682 def MoveR3216: FI8_MOVR3216_ins<"move", IIAlu>;
685 // Format: MFHI rx MIPS16e
686 // Purpose: Move From HI Register
687 // To copy the special purpose HI register to a GPR.
689 def Mfhi16: FRR16_M_ins<0b10000, "mfhi", IIAlu> {
691 let neverHasSideEffects = 1;
695 // Format: MFLO rx MIPS16e
696 // Purpose: Move From LO Register
697 // To copy the special purpose LO register to a GPR.
699 def Mflo16: FRR16_M_ins<0b10010, "mflo", IIAlu> {
701 let neverHasSideEffects = 1;
705 // Pseudo Instruction for mult
707 def MultRxRy16: FMULT16_ins<"mult", IIAlu> {
708 let isCommutable = 1;
709 let neverHasSideEffects = 1;
713 def MultuRxRy16: FMULT16_ins<"multu", IIAlu> {
714 let isCommutable = 1;
715 let neverHasSideEffects = 1;
720 // Format: MULT rx, ry MIPS16e
721 // Purpose: Multiply Word
722 // To multiply 32-bit signed integers.
724 def MultRxRyRz16: FMULT16_LO_ins<"mult", IIAlu> {
725 let isCommutable = 1;
726 let neverHasSideEffects = 1;
731 // Format: MULTU rx, ry MIPS16e
732 // Purpose: Multiply Unsigned Word
733 // To multiply 32-bit unsigned integers.
735 def MultuRxRyRz16: FMULT16_LO_ins<"multu", IIAlu> {
736 let isCommutable = 1;
737 let neverHasSideEffects = 1;
742 // Format: NEG rx, ry MIPS16e
744 // To negate an integer value.
746 def NegRxRy16: FUnaryRR16_ins<0b11101, "neg", IIAlu>;
749 // Format: NOT rx, ry MIPS16e
751 // To complement an integer value
753 def NotRxRy16: FUnaryRR16_ins<0b01111, "not", IIAlu>;
756 // Format: OR rx, ry MIPS16e
758 // To do a bitwise logical OR.
760 def OrRxRxRy16: FRxRxRy16_ins<0b01101, "or", IIAlu>, ArithLogic16Defs<1>;
763 // Format: RESTORE {ra,}{s0/s1/s0-1,}{framesize}
764 // (All args are optional) MIPS16e
765 // Purpose: Restore Registers and Deallocate Stack Frame
766 // To deallocate a stack frame before exit from a subroutine,
767 // restoring return address and static registers, and adjusting
771 // fixed form for restoring RA and the frame
772 // for direct object emitter, encoding needs to be adjusted for the
775 let ra=1, s=0,s0=1,s1=1 in
777 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
778 "restore\t$$ra, $$s0, $$s1, $frame_size", [], IILoad >, MayLoad {
779 let isCodeGenOnly = 1;
780 let Defs = [S0, S1, RA, SP];
784 // Use Restore to increment SP since SP is not a Mip 16 register, this
785 // is an easy way to do that which does not require a register.
787 let ra=0, s=0,s0=0,s1=0 in
789 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
790 "restore\t$frame_size", [], IILoad >, MayLoad {
791 let isCodeGenOnly = 1;
797 // Format: SAVE {ra,}{s0/s1/s0-1,}{framesize} (All arguments are optional)
799 // Purpose: Save Registers and Set Up Stack Frame
800 // To set up a stack frame on entry to a subroutine,
801 // saving return address and static registers, and adjusting stack
803 let ra=1, s=1,s0=1,s1=1 in
805 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
806 "save\t$$ra, $$s0, $$s1, $frame_size", [], IIStore >, MayStore {
807 let isCodeGenOnly = 1;
808 let Uses = [RA, SP, S0, S1];
813 // Use Save to decrement the SP by a constant since SP is not
814 // a Mips16 register.
816 let ra=0, s=0,s0=0,s1=0 in
818 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
819 "save\t$frame_size", [], IIStore >, MayStore {
820 let isCodeGenOnly = 1;
825 // Format: SB ry, offset(rx) MIPS16e
826 // Purpose: Store Byte (Extended)
827 // To store a byte to memory.
830 FEXT_RRI16_mem2_ins<0b11000, "sb", mem16, IIStore>, MayStore;
833 // The Sel(T) instructions are pseudos
834 // T means that they use T8 implicitly.
837 // Format: SelBeqZ rd, rs, rt
838 // Purpose: if rt==0, do nothing
841 def SelBeqZ: Sel<0b00100, "beqz", IIAlu>;
844 // Format: SelTBteqZCmp rd, rs, rl, rr
845 // Purpose: b = Cmp rl, rr.
846 // If b==0 then do nothing.
847 // if b!=0 then rd = rs
849 def SelTBteqZCmp: SelT<0b000, "bteqz", 0b01010, "cmp", IIAlu>;
852 // Format: SelTBteqZCmpi rd, rs, rl, rr
853 // Purpose: b = Cmpi rl, imm.
854 // If b==0 then do nothing.
855 // if b!=0 then rd = rs
857 def SelTBteqZCmpi: SeliT<0b000, "bteqz", 0b01110, "cmpi", IIAlu>;
860 // Format: SelTBteqZSlt rd, rs, rl, rr
861 // Purpose: b = Slt rl, rr.
862 // If b==0 then do nothing.
863 // if b!=0 then rd = rs
865 def SelTBteqZSlt: SelT<0b000, "bteqz", 0b00010, "slt", IIAlu>;
868 // Format: SelTBteqZSlti rd, rs, rl, rr
869 // Purpose: b = Slti rl, imm.
870 // If b==0 then do nothing.
871 // if b!=0 then rd = rs
873 def SelTBteqZSlti: SeliT<0b000, "bteqz", 0b01010, "slti", IIAlu>;
876 // Format: SelTBteqZSltu rd, rs, rl, rr
877 // Purpose: b = Sltu rl, rr.
878 // If b==0 then do nothing.
879 // if b!=0 then rd = rs
881 def SelTBteqZSltu: SelT<0b000, "bteqz", 0b00011, "sltu", IIAlu>;
884 // Format: SelTBteqZSltiu rd, rs, rl, rr
885 // Purpose: b = Sltiu rl, imm.
886 // If b==0 then do nothing.
887 // if b!=0 then rd = rs
889 def SelTBteqZSltiu: SeliT<0b000, "bteqz", 0b01011, "sltiu", IIAlu>;
892 // Format: SelBnez rd, rs, rt
893 // Purpose: if rt!=0, do nothing
896 def SelBneZ: Sel<0b00101, "bnez", IIAlu>;
899 // Format: SelTBtneZCmp rd, rs, rl, rr
900 // Purpose: b = Cmp rl, rr.
901 // If b!=0 then do nothing.
902 // if b0=0 then rd = rs
904 def SelTBtneZCmp: SelT<0b001, "btnez", 0b01010, "cmp", IIAlu>;
907 // Format: SelTBtnezCmpi rd, rs, rl, rr
908 // Purpose: b = Cmpi rl, imm.
909 // If b!=0 then do nothing.
910 // if b==0 then rd = rs
912 def SelTBtneZCmpi: SeliT<0b000, "btnez", 0b01110, "cmpi", IIAlu>;
915 // Format: SelTBtneZSlt rd, rs, rl, rr
916 // Purpose: b = Slt rl, rr.
917 // If b!=0 then do nothing.
918 // if b==0 then rd = rs
920 def SelTBtneZSlt: SelT<0b001, "btnez", 0b00010, "slt", IIAlu>;
923 // Format: SelTBtneZSlti rd, rs, rl, rr
924 // Purpose: b = Slti rl, imm.
925 // If b!=0 then do nothing.
926 // if b==0 then rd = rs
928 def SelTBtneZSlti: SeliT<0b001, "btnez", 0b01010, "slti", IIAlu>;
931 // Format: SelTBtneZSltu rd, rs, rl, rr
932 // Purpose: b = Sltu rl, rr.
933 // If b!=0 then do nothing.
934 // if b==0 then rd = rs
936 def SelTBtneZSltu: SelT<0b001, "btnez", 0b00011, "sltu", IIAlu>;
939 // Format: SelTBtneZSltiu rd, rs, rl, rr
940 // Purpose: b = Slti rl, imm.
941 // If b!=0 then do nothing.
942 // if b==0 then rd = rs
944 def SelTBtneZSltiu: SeliT<0b001, "btnez", 0b01011, "sltiu", IIAlu>;
947 // Format: SH ry, offset(rx) MIPS16e
948 // Purpose: Store Halfword (Extended)
949 // To store a halfword to memory.
952 FEXT_RRI16_mem2_ins<0b11001, "sh", mem16, IIStore>, MayStore;
955 // Format: SLL rx, ry, sa MIPS16e
956 // Purpose: Shift Word Left Logical (Extended)
957 // To execute a left-shift of a word by a fixed number of bits—0 to 31 bits.
959 def SllX16: FEXT_SHIFT16_ins<0b00, "sll", IIAlu>;
962 // Format: SLLV ry, rx MIPS16e
963 // Purpose: Shift Word Left Logical Variable
964 // To execute a left-shift of a word by a variable number of bits.
966 def SllvRxRy16 : FRxRxRy16_ins<0b00100, "sllv", IIAlu>;
969 // Format: SLTI rx, immediate MIPS16e
970 // Purpose: Set on Less Than Immediate (Extended)
971 // To record the result of a less-than comparison with a constant.
973 def SltiCCRxImmX16: FEXT_CCRXI16_ins<0b01010, "slti", IIAlu>;
976 // Format: SLTIU rx, immediate MIPS16e
977 // Purpose: Set on Less Than Immediate Unsigned (Extended)
978 // To record the result of a less-than comparison with a constant.
980 def SltiuCCRxImmX16: FEXT_CCRXI16_ins<0b01011, "sltiu", IIAlu>;
983 // Format: SLT rx, ry MIPS16e
984 // Purpose: Set on Less Than
985 // To record the result of a less-than comparison.
987 def SltRxRy16: FRR16_ins<0b00010, "slt", IIAlu>;
989 def SltCCRxRy16: FCCRR16_ins<0b00010, "slt", IIAlu>;
991 // Format: SLTU rx, ry MIPS16e
992 // Purpose: Set on Less Than Unsigned
993 // To record the result of an unsigned less-than comparison.
995 def SltuRxRyRz16: FRRTR16_ins<0b00011, "sltu", IIAlu> {
1000 def SltuCCRxRy16: FCCRR16_ins<0b00011, "sltu", IIAlu>;
1002 // Format: SRAV ry, rx MIPS16e
1003 // Purpose: Shift Word Right Arithmetic Variable
1004 // To execute an arithmetic right-shift of a word by a variable
1007 def SravRxRy16: FRxRxRy16_ins<0b00111, "srav", IIAlu>;
1011 // Format: SRA rx, ry, sa MIPS16e
1012 // Purpose: Shift Word Right Arithmetic (Extended)
1013 // To execute an arithmetic right-shift of a word by a fixed
1014 // number of bits—1 to 8 bits.
1016 def SraX16: FEXT_SHIFT16_ins<0b11, "sra", IIAlu>;
1020 // Format: SRLV ry, rx MIPS16e
1021 // Purpose: Shift Word Right Logical Variable
1022 // To execute a logical right-shift of a word by a variable
1025 def SrlvRxRy16: FRxRxRy16_ins<0b00110, "srlv", IIAlu>;
1029 // Format: SRL rx, ry, sa MIPS16e
1030 // Purpose: Shift Word Right Logical (Extended)
1031 // To execute a logical right-shift of a word by a fixed
1032 // number of bits—1 to 31 bits.
1034 def SrlX16: FEXT_SHIFT16_ins<0b10, "srl", IIAlu>;
1037 // Format: SUBU rz, rx, ry MIPS16e
1038 // Purpose: Subtract Unsigned Word
1039 // To subtract 32-bit integers
1041 def SubuRxRyRz16: FRRR16_ins<0b11, "subu", IIAlu>, ArithLogic16Defs<0>;
1044 // Format: SW ry, offset(rx) MIPS16e
1045 // Purpose: Store Word (Extended)
1046 // To store a word to memory.
1048 def SwRxRyOffMemX16:
1049 FEXT_RRI16_mem2_ins<0b11011, "sw", mem16, IIStore>, MayStore;
1052 // Format: SW rx, offset(sp) MIPS16e
1053 // Purpose: Store Word rx (SP-Relative)
1054 // To store an SP-relative word to memory.
1056 def SwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b11010, "sw", IIStore>, MayStore;
1060 // Format: XOR rx, ry MIPS16e
1062 // To do a bitwise logical XOR.
1064 def XorRxRxRy16: FRxRxRy16_ins<0b01110, "xor", IIAlu>, ArithLogic16Defs<1>;
1066 class Mips16Pat<dag pattern, dag result> : Pat<pattern, result> {
1067 let Predicates = [InMips16Mode];
1070 // Unary Arith/Logic
1072 class ArithLogicU_pat<PatFrag OpNode, Instruction I> :
1073 Mips16Pat<(OpNode CPU16Regs:$r),
1076 def: ArithLogicU_pat<not, NotRxRy16>;
1077 def: ArithLogicU_pat<ineg, NegRxRy16>;
1079 class ArithLogic16_pat<SDNode OpNode, Instruction I> :
1080 Mips16Pat<(OpNode CPU16Regs:$l, CPU16Regs:$r),
1081 (I CPU16Regs:$l, CPU16Regs:$r)>;
1083 def: ArithLogic16_pat<add, AdduRxRyRz16>;
1084 def: ArithLogic16_pat<and, AndRxRxRy16>;
1085 def: ArithLogic16_pat<mul, MultRxRyRz16>;
1086 def: ArithLogic16_pat<or, OrRxRxRy16>;
1087 def: ArithLogic16_pat<sub, SubuRxRyRz16>;
1088 def: ArithLogic16_pat<xor, XorRxRxRy16>;
1090 // Arithmetic and logical instructions with 2 register operands.
1092 class ArithLogicI16_pat<SDNode OpNode, PatFrag imm_type, Instruction I> :
1093 Mips16Pat<(OpNode CPU16Regs:$in, imm_type:$imm),
1094 (I CPU16Regs:$in, imm_type:$imm)>;
1096 def: ArithLogicI16_pat<add, immSExt8, AddiuRxRxImm16>;
1097 def: ArithLogicI16_pat<add, immSExt16, AddiuRxRxImmX16>;
1098 def: ArithLogicI16_pat<shl, immZExt5, SllX16>;
1099 def: ArithLogicI16_pat<srl, immZExt5, SrlX16>;
1100 def: ArithLogicI16_pat<sra, immZExt5, SraX16>;
1102 class shift_rotate_reg16_pat<SDNode OpNode, Instruction I> :
1103 Mips16Pat<(OpNode CPU16Regs:$r, CPU16Regs:$ra),
1104 (I CPU16Regs:$r, CPU16Regs:$ra)>;
1106 def: shift_rotate_reg16_pat<shl, SllvRxRy16>;
1107 def: shift_rotate_reg16_pat<sra, SravRxRy16>;
1108 def: shift_rotate_reg16_pat<srl, SrlvRxRy16>;
1110 class LoadM16_pat<PatFrag OpNode, Instruction I> :
1111 Mips16Pat<(OpNode addr16:$addr), (I addr16:$addr)>;
1113 def: LoadM16_pat<sextloadi8, LbRxRyOffMemX16>;
1114 def: LoadM16_pat<zextloadi8, LbuRxRyOffMemX16>;
1115 def: LoadM16_pat<sextloadi16, LhRxRyOffMemX16>;
1116 def: LoadM16_pat<zextloadi16, LhuRxRyOffMemX16>;
1117 def: LoadM16_pat<load, LwRxRyOffMemX16>;
1119 class StoreM16_pat<PatFrag OpNode, Instruction I> :
1120 Mips16Pat<(OpNode CPU16Regs:$r, addr16:$addr),
1121 (I CPU16Regs:$r, addr16:$addr)>;
1123 def: StoreM16_pat<truncstorei8, SbRxRyOffMemX16>;
1124 def: StoreM16_pat<truncstorei16, ShRxRyOffMemX16>;
1125 def: StoreM16_pat<store, SwRxRyOffMemX16>;
1127 // Unconditional branch
1128 class UncondBranch16_pat<SDNode OpNode, Instruction I>:
1129 Mips16Pat<(OpNode bb:$imm16), (I bb:$imm16)> {
1130 let Predicates = [InMips16Mode];
1133 def : Mips16Pat<(MipsJmpLink (i32 tglobaladdr:$dst)),
1134 (Jal16 tglobaladdr:$dst)>;
1136 def : Mips16Pat<(MipsJmpLink (i32 texternalsym:$dst)),
1137 (Jal16 texternalsym:$dst)>;
1141 (brind CPU16Regs:$rs),
1142 (JrcRx16 CPU16Regs:$rs)>;
1144 // Jump and Link (Call)
1145 let isCall=1, hasDelaySlot=0 in
1147 FRR16_JALRC<0, 0, 0, (outs), (ins CPU16Regs:$rs),
1148 "jalrc \t$rs", [(MipsJmpLink CPU16Regs:$rs)], IIBranch>;
1151 let isReturn=1, isTerminator=1, hasDelaySlot=1, isBarrier=1, hasCtrlDep=1,
1152 hasExtraSrcRegAllocReq = 1 in
1153 def RetRA16 : MipsPseudo16<(outs), (ins), "", [(MipsRet)]>;
1158 class SetCC_R16<PatFrag cond_op, Instruction I>:
1159 Mips16Pat<(cond_op CPU16Regs:$rx, CPU16Regs:$ry),
1160 (I CPU16Regs:$rx, CPU16Regs:$ry)>;
1162 class SetCC_I16<PatFrag cond_op, PatLeaf imm_type, Instruction I>:
1163 Mips16Pat<(cond_op CPU16Regs:$rx, imm_type:$imm16),
1164 (I CPU16Regs:$rx, imm_type:$imm16)>;
1167 def: Mips16Pat<(i32 addr16:$addr),
1168 (AddiuRxRyOffMemX16 addr16:$addr)>;
1171 // Large (>16 bit) immediate loads
1172 def : Mips16Pat<(i32 imm:$imm),
1173 (OrRxRxRy16 (SllX16 (LiRxImmX16 (HI16 imm:$imm)), 16),
1174 (LiRxImmX16 (LO16 imm:$imm)))>;
1176 // Carry MipsPatterns
1177 def : Mips16Pat<(subc CPU16Regs:$lhs, CPU16Regs:$rhs),
1178 (SubuRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1179 def : Mips16Pat<(addc CPU16Regs:$lhs, CPU16Regs:$rhs),
1180 (AdduRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1181 def : Mips16Pat<(addc CPU16Regs:$src, immSExt16:$imm),
1182 (AddiuRxRxImmX16 CPU16Regs:$src, imm:$imm)>;
1185 // Some branch conditional patterns are not generated by llvm at this time.
1186 // Some are for seemingly arbitrary reasons not used: i.e. with signed number
1187 // comparison they are used and for unsigned a different pattern is used.
1188 // I am pushing upstream from the full mips16 port and it seemed that I needed
1189 // these earlier and the mips32 port has these but now I cannot create test
1190 // cases that use these patterns. While I sort this all out I will leave these
1191 // extra patterns commented out and if I can be sure they are really not used,
1192 // I will delete the code. I don't want to check the code in uncommented without
1193 // a valid test case. In some cases, the compiler is generating patterns with
1194 // setcc instead and earlier I had implemented setcc first so may have masked
1195 // the problem. The setcc variants are suboptimal for mips16 so I may wantto
1196 // figure out how to enable the brcond patterns or else possibly new
1197 // combinations of of brcond and setcc.
1203 <(brcond (i32 (seteq CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1204 (BteqzT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1209 <(brcond (i32 (seteq CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1210 (BteqzT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1214 <(brcond (i32 (seteq CPU16Regs:$rx, 0)), bb:$targ16),
1215 (BeqzRxImmX16 CPU16Regs:$rx, bb:$targ16)
1219 // bcond-setgt (do we need to have this pair of setlt, setgt??)
1222 <(brcond (i32 (setgt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1223 (BtnezT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1230 <(brcond (i32 (setge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1231 (BteqzT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1235 // never called because compiler transforms a >= k to a > (k-1)
1237 <(brcond (i32 (setge CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1238 (BteqzT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1245 <(brcond (i32 (setlt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1246 (BtnezT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1250 <(brcond (i32 (setlt CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1251 (BtnezT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1258 <(brcond (i32 (setle CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1259 (BteqzT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1266 <(brcond (i32 (setne CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1267 (BtnezT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1271 <(brcond (i32 (setne CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1272 (BtnezT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1276 <(brcond (i32 (setne CPU16Regs:$rx, 0)), bb:$targ16),
1277 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1281 // This needs to be there but I forget which code will generate it
1284 <(brcond CPU16Regs:$rx, bb:$targ16),
1285 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1294 // <(brcond (i32 (setugt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1295 // (BtnezT8SltuX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1302 // <(brcond (i32 (setuge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1303 // (BteqzT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1311 // <(brcond (i32 (setult CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1312 // (BtnezT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1315 def: UncondBranch16_pat<br, BimmX16>;
1318 def: Mips16Pat<(i32 immSExt16:$in),
1319 (AddiuRxRxImmX16 (Move32R16 ZERO), immSExt16:$in)>;
1321 def: Mips16Pat<(i32 immZExt16:$in), (LiRxImmX16 immZExt16:$in)>;
1327 <(MipsDivRem CPU16Regs:$rx, CPU16Regs:$ry),
1328 (DivRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1334 <(MipsDivRemU CPU16Regs:$rx, CPU16Regs:$ry),
1335 (DivuRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1340 // if !(a < b) x = y
1342 def : Mips16Pat<(select (i32 (setge CPU16Regs:$a, CPU16Regs:$b)),
1343 CPU16Regs:$x, CPU16Regs:$y),
1344 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1345 CPU16Regs:$a, CPU16Regs:$b)>;
1352 def : Mips16Pat<(select (i32 (setgt CPU16Regs:$a, CPU16Regs:$b)),
1353 CPU16Regs:$x, CPU16Regs:$y),
1354 (SelTBtneZSlt CPU16Regs:$x, CPU16Regs:$y,
1355 CPU16Regs:$b, CPU16Regs:$a)>;
1360 // if !(a < b) x = y;
1363 (select (i32 (setuge CPU16Regs:$a, CPU16Regs:$b)),
1364 CPU16Regs:$x, CPU16Regs:$y),
1365 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1366 CPU16Regs:$a, CPU16Regs:$b)>;
1373 def : Mips16Pat<(select (i32 (setugt CPU16Regs:$a, CPU16Regs:$b)),
1374 CPU16Regs:$x, CPU16Regs:$y),
1375 (SelTBtneZSltu CPU16Regs:$x, CPU16Regs:$y,
1376 CPU16Regs:$b, CPU16Regs:$a)>;
1380 // due to an llvm optimization, i don't think that this will ever
1381 // be used. This is transformed into x = (a > k-1)?x:y
1386 // (select (i32 (setge CPU16Regs:$lhs, immSExt16:$rhs)),
1387 // CPU16Regs:$T, CPU16Regs:$F),
1388 // (SelTBteqZSlti CPU16Regs:$T, CPU16Regs:$F,
1389 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1392 // (select (i32 (setuge CPU16Regs:$lhs, immSExt16:$rhs)),
1393 // CPU16Regs:$T, CPU16Regs:$F),
1394 // (SelTBteqZSltiu CPU16Regs:$T, CPU16Regs:$F,
1395 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1400 // if !(a < k) x = y;
1403 (select (i32 (setlt CPU16Regs:$a, immSExt16:$b)),
1404 CPU16Regs:$x, CPU16Regs:$y),
1405 (SelTBtneZSlti CPU16Regs:$x, CPU16Regs:$y,
1406 CPU16Regs:$a, immSExt16:$b)>;
1412 // x = (a <= b)? x : y
1416 def : Mips16Pat<(select (i32 (setle CPU16Regs:$a, CPU16Regs:$b)),
1417 CPU16Regs:$x, CPU16Regs:$y),
1418 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1419 CPU16Regs:$b, CPU16Regs:$a)>;
1423 // x = (a <= b)? x : y
1427 def : Mips16Pat<(select (i32 (setule CPU16Regs:$a, CPU16Regs:$b)),
1428 CPU16Regs:$x, CPU16Regs:$y),
1429 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1430 CPU16Regs:$b, CPU16Regs:$a)>;
1434 // x = (a == b)? x : y
1436 // if (a != b) x = y
1438 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, CPU16Regs:$b)),
1439 CPU16Regs:$x, CPU16Regs:$y),
1440 (SelTBteqZCmp CPU16Regs:$x, CPU16Regs:$y,
1441 CPU16Regs:$b, CPU16Regs:$a)>;
1445 // x = (a == 0)? x : y
1447 // if (a != 0) x = y
1449 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, 0)),
1450 CPU16Regs:$x, CPU16Regs:$y),
1451 (SelBeqZ CPU16Regs:$x, CPU16Regs:$y,
1457 // x = (a == k)? x : y
1459 // if (a != k) x = y
1461 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, immZExt16:$k)),
1462 CPU16Regs:$x, CPU16Regs:$y),
1463 (SelTBteqZCmpi CPU16Regs:$x, CPU16Regs:$y,
1464 CPU16Regs:$a, immZExt16:$k)>;
1469 // x = (a != b)? x : y
1471 // if (a == b) x = y
1474 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, CPU16Regs:$b)),
1475 CPU16Regs:$x, CPU16Regs:$y),
1476 (SelTBtneZCmp CPU16Regs:$x, CPU16Regs:$y,
1477 CPU16Regs:$b, CPU16Regs:$a)>;
1481 // x = (a != 0)? x : y
1483 // if (a == 0) x = y
1485 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, 0)),
1486 CPU16Regs:$x, CPU16Regs:$y),
1487 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1495 def : Mips16Pat<(select CPU16Regs:$a,
1496 CPU16Regs:$x, CPU16Regs:$y),
1497 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1503 // x = (a != k)? x : y
1505 // if (a == k) x = y
1507 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, immZExt16:$k)),
1508 CPU16Regs:$x, CPU16Regs:$y),
1509 (SelTBtneZCmpi CPU16Regs:$x, CPU16Regs:$y,
1510 CPU16Regs:$a, immZExt16:$k)>;
1513 // When writing C code to test setxx these patterns,
1514 // some will be transformed into
1515 // other things. So we test using C code but using -O3 and -O0
1520 <(seteq CPU16Regs:$lhs,CPU16Regs:$rhs),
1521 (SltiuCCRxImmX16 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs), 1)>;
1524 <(seteq CPU16Regs:$lhs, 0),
1525 (SltiuCCRxImmX16 CPU16Regs:$lhs, 1)>;
1533 <(setge CPU16Regs:$lhs, CPU16Regs:$rhs),
1534 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1538 // For constants, llvm transforms this to:
1539 // x > (k -1) and then reverses the operands to use setlt. So this pattern
1540 // is not used now by the compiler. (Presumably checking that k-1 does not
1541 // overflow). The compiler never uses this at a the current time, due to
1542 // other optimizations.
1545 // <(setge CPU16Regs:$lhs, immSExt16:$rhs),
1546 // (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, immSExt16:$rhs),
1547 // (LiRxImmX16 1))>;
1549 // This catches the x >= -32768 case by transforming it to x > -32769
1552 <(setgt CPU16Regs:$lhs, -32769),
1553 (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, -32768),
1562 <(setgt CPU16Regs:$lhs, CPU16Regs:$rhs),
1563 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1569 <(setle CPU16Regs:$lhs, CPU16Regs:$rhs),
1570 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImmX16 1))>;
1575 def: SetCC_R16<setlt, SltCCRxRy16>;
1577 def: SetCC_I16<setlt, immSExt16, SltiCCRxImmX16>;
1583 <(setne CPU16Regs:$lhs,CPU16Regs:$rhs),
1584 (SltuCCRxRy16 (LiRxImmX16 0),
1585 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs))>;
1592 <(setuge CPU16Regs:$lhs, CPU16Regs:$rhs),
1593 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1596 // this pattern will never be used because the compiler will transform
1597 // x >= k to x > (k - 1) and then use SLT
1600 // <(setuge CPU16Regs:$lhs, immZExt16:$rhs),
1601 // (XorRxRxRy16 (SltiuCCRxImmX16 CPU16Regs:$lhs, immZExt16:$rhs),
1602 // (LiRxImmX16 1))>;
1608 <(setugt CPU16Regs:$lhs, CPU16Regs:$rhs),
1609 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1615 <(setule CPU16Regs:$lhs, CPU16Regs:$rhs),
1616 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImmX16 1))>;
1621 def: SetCC_R16<setult, SltuCCRxRy16>;
1623 def: SetCC_I16<setult, immSExt16, SltiuCCRxImmX16>;
1625 def: Mips16Pat<(add CPU16Regs:$hi, (MipsLo tglobaladdr:$lo)),
1626 (AddiuRxRxImmX16 CPU16Regs:$hi, tglobaladdr:$lo)>;
1630 def : Mips16Pat<(MipsHi tglobaladdr:$in),
1631 (SllX16 (LiRxImmX16 tglobaladdr:$in), 16)>;
1632 def : Mips16Pat<(MipsHi tjumptable:$in),
1633 (SllX16 (LiRxImmX16 tjumptable:$in), 16)>;
1634 def : Mips16Pat<(MipsHi tglobaltlsaddr:$in),
1635 (SllX16 (LiRxImmX16 tglobaltlsaddr:$in), 16)>;
1638 class Wrapper16Pat<SDNode node, Instruction ADDiuOp, RegisterClass RC>:
1639 Mips16Pat<(MipsWrapper RC:$gp, node:$in),
1640 (ADDiuOp RC:$gp, node:$in)>;
1643 def : Wrapper16Pat<tglobaladdr, AddiuRxRxImmX16, CPU16Regs>;
1644 def : Wrapper16Pat<tglobaltlsaddr, AddiuRxRxImmX16, CPU16Regs>;
1646 def : Mips16Pat<(i32 (extloadi8 addr16:$src)),
1647 (LbuRxRyOffMemX16 addr16:$src)>;
1648 def : Mips16Pat<(i32 (extloadi16 addr16:$src)),
1649 (LhuRxRyOffMemX16 addr16:$src)>;