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";
35 // Compare a register and immediate and place result in CC
38 // EXT-CCRR Instruction format
40 class FEXT_CCRXI16_ins<bits<5> _op, string asmstr,
42 FEXT_RI16<_op, (outs CPU16Regs:$cc), (ins CPU16Regs:$rx, simm16:$imm),
43 !strconcat(asmstr, "\t$rx, $imm\n\tmove\t$cc, $$t8"), [], itin> {
48 // EXT-I instruction format
50 class FEXT_I16_ins<bits<5> eop, string asmstr, InstrItinClass itin> :
51 FEXT_I16<eop, (outs), (ins brtarget:$imm16),
52 !strconcat(asmstr, "\t$imm16"),[], itin>;
55 // EXT-I8 instruction format
58 class FEXT_I816_ins_base<bits<3> _func, string asmstr,
59 string asmstr2, InstrItinClass itin>:
60 FEXT_I816<_func, (outs), (ins uimm16:$imm), !strconcat(asmstr, asmstr2),
63 class FEXT_I816_ins<bits<3> _func, string asmstr,
65 FEXT_I816_ins_base<_func, asmstr, "\t$imm", itin>;
68 // Assembler formats in alphabetical order.
69 // Natural and pseudos are mixed together.
71 // Compare two registers and place result in CC
74 // CC-RR Instruction format
76 class FCCRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
77 FRR16<f, (outs CPU16Regs:$cc), (ins CPU16Regs:$rx, CPU16Regs:$ry),
78 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$cc, $$t8"), [], itin> {
83 // EXT-RI instruction format
86 class FEXT_RI16_ins_base<bits<5> _op, string asmstr, string asmstr2,
88 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins simm16:$imm),
89 !strconcat(asmstr, asmstr2), [], itin>;
91 class FEXT_RI16_ins<bits<5> _op, string asmstr,
93 FEXT_RI16_ins_base<_op, asmstr, "\t$rx, $imm", itin>;
95 class FEXT_RI16_PC_ins<bits<5> _op, string asmstr, InstrItinClass itin>:
96 FEXT_RI16_ins_base<_op, asmstr, "\t$rx, $$pc, $imm", itin>;
98 class FEXT_RI16_B_ins<bits<5> _op, string asmstr,
100 FEXT_RI16<_op, (outs), (ins CPU16Regs:$rx, brtarget:$imm),
101 !strconcat(asmstr, "\t$rx, $imm"), [], itin>;
103 class FEXT_2RI16_ins<bits<5> _op, string asmstr,
104 InstrItinClass itin>:
105 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPU16Regs:$rx_, simm16:$imm),
106 !strconcat(asmstr, "\t$rx, $imm"), [], itin> {
107 let Constraints = "$rx_ = $rx";
111 // this has an explicit sp argument that we ignore to work around a problem
113 class FEXT_RI16_SP_explicit_ins<bits<5> _op, string asmstr,
114 InstrItinClass itin>:
115 FEXT_RI16<_op, (outs CPU16Regs:$rx), (ins CPUSPReg:$ry, simm16:$imm),
116 !strconcat(asmstr, "\t$rx, $imm ( $ry ); "), [], itin>;
119 // EXT-RRI instruction format
122 class FEXT_RRI16_mem_ins<bits<5> op, string asmstr, Operand MemOpnd,
123 InstrItinClass itin>:
124 FEXT_RRI16<op, (outs CPU16Regs:$ry), (ins MemOpnd:$addr),
125 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
127 class FEXT_RRI16_mem2_ins<bits<5> op, string asmstr, Operand MemOpnd,
128 InstrItinClass itin>:
129 FEXT_RRI16<op, (outs ), (ins CPU16Regs:$ry, MemOpnd:$addr),
130 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
134 // EXT-RRI-A instruction format
137 class FEXT_RRI_A16_mem_ins<bits<1> op, string asmstr, Operand MemOpnd,
138 InstrItinClass itin>:
139 FEXT_RRI_A16<op, (outs CPU16Regs:$ry), (ins MemOpnd:$addr),
140 !strconcat(asmstr, "\t$ry, $addr"), [], itin>;
143 // EXT-SHIFT instruction format
145 class FEXT_SHIFT16_ins<bits<2> _f, string asmstr, InstrItinClass itin>:
146 FEXT_SHIFT16<_f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry, shamt:$sa),
147 !strconcat(asmstr, "\t$rx, $ry, $sa"), [], itin>;
152 class FEXT_T8I816_ins<bits<3> _func, string asmstr, string asmstr2,
153 InstrItinClass itin>:
154 FEXT_I816<_func, (outs),
155 (ins CPU16Regs:$rx, CPU16Regs:$ry, brtarget:$imm),
156 !strconcat(asmstr2, !strconcat("\t$rx, $ry\n\t",
157 !strconcat(asmstr, "\t$imm"))),[], itin> {
164 class FEXT_T8I8I16_ins<bits<3> _func, string asmstr, string asmstr2,
165 InstrItinClass itin>:
166 FEXT_I816<_func, (outs),
167 (ins CPU16Regs:$rx, simm16:$imm, brtarget:$targ),
168 !strconcat(asmstr2, !strconcat("\t$rx, $imm\n\t",
169 !strconcat(asmstr, "\t$targ"))), [], itin> {
176 // I8_MOVR32 instruction format (used only by the MOVR32 instructio
178 class FI8_MOVR3216_ins<string asmstr, InstrItinClass itin>:
179 FI8_MOVR3216<(outs CPU16Regs:$rz), (ins CPURegs:$r32),
180 !strconcat(asmstr, "\t$rz, $r32"), [], itin>;
183 // I8_MOV32R instruction format (used only by MOV32R instruction)
186 class FI8_MOV32R16_ins<string asmstr, InstrItinClass itin>:
187 FI8_MOV32R16<(outs CPURegs:$r32), (ins CPU16Regs:$rz),
188 !strconcat(asmstr, "\t$r32, $rz"), [], itin>;
191 // This are pseudo formats for multiply
192 // This first one can be changed to non pseudo now.
196 class FMULT16_ins<string asmstr, InstrItinClass itin> :
197 MipsPseudo16<(outs), (ins CPU16Regs:$rx, CPU16Regs:$ry),
198 !strconcat(asmstr, "\t$rx, $ry"), []>;
203 class FMULT16_LO_ins<string asmstr, InstrItinClass itin> :
204 MipsPseudo16<(outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
205 !strconcat(asmstr, "\t$rx, $ry\n\tmflo\t$rz"), []> {
210 // RR-type instruction format
213 class FRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
214 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
215 !strconcat(asmstr, "\t$rx, $ry"), [], itin> {
218 class FRRTR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
219 FRR16<f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
220 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$rz, $$t8"), [], itin> ;
223 // maybe refactor but need a $zero as a dummy first parameter
225 class FRR16_div_ins<bits<5> f, string asmstr, InstrItinClass itin> :
226 FRR16<f, (outs ), (ins CPU16Regs:$rx, CPU16Regs:$ry),
227 !strconcat(asmstr, "\t$$zero, $rx, $ry"), [], itin> ;
229 class FUnaryRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
230 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
231 !strconcat(asmstr, "\t$rx, $ry"), [], itin> ;
234 class FRR16_M_ins<bits<5> f, string asmstr,
235 InstrItinClass itin> :
236 FRR16<f, (outs CPU16Regs:$rx), (ins),
237 !strconcat(asmstr, "\t$rx"), [], itin>;
239 class FRxRxRy16_ins<bits<5> f, string asmstr,
240 InstrItinClass itin> :
241 FRR16<f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
242 !strconcat(asmstr, "\t$rz, $ry"),
244 let Constraints = "$rx = $rz";
248 class FRR16_JALRC_RA_only_ins<bits<1> nd_, bits<1> l_,
249 string asmstr, InstrItinClass itin>:
250 FRR16_JALRC<nd_, l_, 1, (outs), (ins), !strconcat(asmstr, "\t $$ra"),
254 // RRR-type instruction format
257 class FRRR16_ins<bits<2> _f, string asmstr, InstrItinClass itin> :
258 FRRR16<_f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
259 !strconcat(asmstr, "\t$rz, $rx, $ry"), [], itin>;
262 // These Sel patterns support the generation of conditional move
263 // pseudo instructions.
265 // The nomenclature uses the components making up the pseudo and may
266 // be a bit counter intuitive when compared with the end result we seek.
267 // For example using a bqez in the example directly below results in the
268 // conditional move being done if the tested register is not zero.
269 // I considered in easier to check by keeping the pseudo consistent with
270 // it's components but it could have been done differently.
272 // The simplest case is when can test and operand directly and do the
273 // conditional move based on a simple mips16 conditional
274 // branch instruction.
276 // if $op == beqz or bnez:
281 // if $op == beqz, then if $rt != 0, then the conditional assignment
282 // $rd = $rs is done.
284 // if $op == bnez, then if $rt == 0, then the conditional assignment
285 // $rd = $rs is done.
287 // So this pseudo class only has one operand, i.e. op
289 class Sel<bits<5> f1, string op, InstrItinClass itin>:
290 MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
292 !strconcat(op, "\t$rt, .+4\n\t\n\tmove $rd, $rs"), [], itin,
295 let Constraints = "$rd = $rd_";
299 // The next two instruction classes allow for an operand which tests
300 // two operands and returns a value in register T8 and
301 //then does a conditional branch based on the value of T8
304 // op2 can be cmpi or slti/sltiu
305 // op1 can bteqz or btnez
306 // the operands for op2 are a register and a signed constant
308 // $op2 $t, $imm ;test register t and branch conditionally
309 // $op1 .+4 ;op1 is a conditional branch
313 class SeliT<bits<5> f1, string op1, bits<5> f2, string op2,
314 InstrItinClass itin>:
315 MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
316 CPU16Regs:$rl, simm16:$imm),
318 !strconcat("\t$rl, $imm\n\t",
319 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin,
322 let Constraints = "$rd = $rd_";
326 // op2 can be cmp or slt/sltu
327 // op1 can be bteqz or btnez
328 // the operands for op2 are two registers
329 // op1 is a conditional branch
332 // $op2 $rl, $rr ;test registers rl,rr
333 // $op1 .+4 ;op2 is a conditional branch
337 class SelT<bits<5> f1, string op1, bits<5> f2, string op2,
338 InstrItinClass itin>:
339 MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
340 CPU16Regs:$rl, CPU16Regs:$rr),
342 !strconcat("\t$rl, $rr\n\t",
343 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin,
346 let Constraints = "$rd = $rd_";
351 // Some general instruction class info
355 class ArithLogic16Defs<bit isCom=0> {
357 bit isCommutable = isCom;
358 bit isReMaterializable = 1;
359 bit neverHasSideEffects = 1;
364 bit isTerminator = 1;
370 bit isTerminator = 1;
382 // Format: ADDIU rx, immediate MIPS16e
383 // Purpose: Add Immediate Unsigned Word (2-Operand, Extended)
384 // To add a constant to a 32-bit integer.
386 def AddiuRxImmX16: FEXT_RI16_ins<0b01001, "addiu", IIAlu>;
388 def AddiuRxRxImmX16: FEXT_2RI16_ins<0b01001, "addiu", IIAlu>,
391 def AddiuRxRyOffMemX16:
392 FEXT_RRI_A16_mem_ins<0, "addiu", mem16_ea, IIAlu>;
396 // Format: ADDIU rx, pc, immediate MIPS16e
397 // Purpose: Add Immediate Unsigned Word (3-Operand, PC-Relative, Extended)
398 // To add a constant to the program counter.
400 def AddiuRxPcImmX16: FEXT_RI16_PC_ins<0b00001, "addiu", IIAlu>;
402 // Format: ADDU rz, rx, ry MIPS16e
403 // Purpose: Add Unsigned Word (3-Operand)
404 // To add 32-bit integers.
407 def AdduRxRyRz16: FRRR16_ins<01, "addu", IIAlu>, ArithLogic16Defs<1>;
410 // Format: AND rx, ry MIPS16e
412 // To do a bitwise logical AND.
414 def AndRxRxRy16: FRxRxRy16_ins<0b01100, "and", IIAlu>, ArithLogic16Defs<1>;
418 // Format: BEQZ rx, offset MIPS16e
419 // Purpose: Branch on Equal to Zero (Extended)
420 // To test a GPR then do a PC-relative conditional branch.
422 def BeqzRxImmX16: FEXT_RI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
424 // Format: B offset MIPS16e
425 // Purpose: Unconditional Branch
426 // To do an unconditional PC-relative branch.
428 def BimmX16: FEXT_I16_ins<0b00010, "b", IIAlu>, branch16;
431 // Format: BNEZ rx, offset MIPS16e
432 // Purpose: Branch on Not Equal to Zero (Extended)
433 // To test a GPR then do a PC-relative conditional branch.
435 def BnezRxImmX16: FEXT_RI16_B_ins<0b00101, "bnez", IIAlu>, cbranch16;
438 // Format: BTEQZ offset MIPS16e
439 // Purpose: Branch on T Equal to Zero (Extended)
440 // To test special register T then do a PC-relative conditional branch.
442 def BteqzX16: FEXT_I816_ins<0b000, "bteqz", IIAlu>, cbranch16;
444 def BteqzT8CmpX16: FEXT_T8I816_ins<0b000, "bteqz", "cmp", IIAlu>, cbranch16;
446 def BteqzT8CmpiX16: FEXT_T8I8I16_ins<0b000, "bteqz", "cmpi", IIAlu>,
449 def BteqzT8SltX16: FEXT_T8I816_ins<0b000, "bteqz", "slt", IIAlu>, cbranch16;
451 def BteqzT8SltuX16: FEXT_T8I816_ins<0b000, "bteqz", "sltu", IIAlu>, cbranch16;
453 def BteqzT8SltiX16: FEXT_T8I8I16_ins<0b000, "bteqz", "slti", IIAlu>, cbranch16;
455 def BteqzT8SltiuX16: FEXT_T8I8I16_ins<0b000, "bteqz", "sltiu", IIAlu>,
459 // Format: BTNEZ offset MIPS16e
460 // Purpose: Branch on T Not Equal to Zero (Extended)
461 // To test special register T then do a PC-relative conditional branch.
463 def BtnezX16: FEXT_I816_ins<0b001, "btnez", IIAlu> ,cbranch16;
465 def BtnezT8CmpX16: FEXT_T8I816_ins<0b000, "btnez", "cmp", IIAlu>, cbranch16;
467 def BtnezT8CmpiX16: FEXT_T8I8I16_ins<0b000, "btnez", "cmpi", IIAlu>, cbranch16;
469 def BtnezT8SltX16: FEXT_T8I816_ins<0b000, "btnez", "slt", IIAlu>, cbranch16;
471 def BtnezT8SltuX16: FEXT_T8I816_ins<0b000, "btnez", "sltu", IIAlu>, cbranch16;
473 def BtnezT8SltiX16: FEXT_T8I8I16_ins<0b000, "btnez", "slti", IIAlu>, cbranch16;
475 def BtnezT8SltiuX16: FEXT_T8I8I16_ins<0b000, "btnez", "sltiu", IIAlu>,
479 // Format: DIV rx, ry MIPS16e
480 // Purpose: Divide Word
481 // To divide 32-bit signed integers.
483 def DivRxRy16: FRR16_div_ins<0b11010, "div", IIAlu> {
488 // Format: DIVU rx, ry MIPS16e
489 // Purpose: Divide Unsigned Word
490 // To divide 32-bit unsigned integers.
492 def DivuRxRy16: FRR16_div_ins<0b11011, "divu", IIAlu> {
498 // Format: JR ra MIPS16e
499 // Purpose: Jump Register Through Register ra
500 // To execute a branch to the instruction address in the return
504 def JrRa16: FRR16_JALRC_RA_only_ins<0, 0, "jr", IIAlu> {
506 let isIndirectBranch = 1;
507 let hasDelaySlot = 1;
512 // Format: LB ry, offset(rx) MIPS16e
513 // Purpose: Load Byte (Extended)
514 // To load a byte from memory as a signed value.
516 def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad;
519 // Format: LBU ry, offset(rx) MIPS16e
520 // Purpose: Load Byte Unsigned (Extended)
521 // To load a byte from memory as a unsigned value.
523 def LbuRxRyOffMemX16:
524 FEXT_RRI16_mem_ins<0b10100, "lbu", mem16, IILoad>, MayLoad;
527 // Format: LH ry, offset(rx) MIPS16e
528 // Purpose: Load Halfword signed (Extended)
529 // To load a halfword from memory as a signed value.
531 def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad;
534 // Format: LHU ry, offset(rx) MIPS16e
535 // Purpose: Load Halfword unsigned (Extended)
536 // To load a halfword from memory as an unsigned value.
538 def LhuRxRyOffMemX16:
539 FEXT_RRI16_mem_ins<0b10100, "lhu", mem16, IILoad>, MayLoad;
542 // Format: LI rx, immediate MIPS16e
543 // Purpose: Load Immediate (Extended)
544 // To load a constant into a GPR.
546 def LiRxImmX16: FEXT_RI16_ins<0b01101, "li", IIAlu>;
549 // Format: LW ry, offset(rx) MIPS16e
550 // Purpose: Load Word (Extended)
551 // To load a word from memory as a signed value.
553 def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad;
555 // Format: LW rx, offset(sp) MIPS16e
556 // Purpose: Load Word (SP-Relative, Extended)
557 // To load an SP-relative word from memory as a signed value.
559 def LwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b10110, "lw", IILoad>, MayLoad;
562 // Format: MOVE r32, rz MIPS16e
564 // To move the contents of a GPR to a GPR.
566 def Move32R16: FI8_MOV32R16_ins<"move", IIAlu>;
569 // Format: MOVE ry, r32 MIPS16e
571 // To move the contents of a GPR to a GPR.
573 def MoveR3216: FI8_MOVR3216_ins<"move", IIAlu>;
576 // Format: MFHI rx MIPS16e
577 // Purpose: Move From HI Register
578 // To copy the special purpose HI register to a GPR.
580 def Mfhi16: FRR16_M_ins<0b10000, "mfhi", IIAlu> {
582 let neverHasSideEffects = 1;
586 // Format: MFLO rx MIPS16e
587 // Purpose: Move From LO Register
588 // To copy the special purpose LO register to a GPR.
590 def Mflo16: FRR16_M_ins<0b10010, "mflo", IIAlu> {
592 let neverHasSideEffects = 1;
596 // Pseudo Instruction for mult
598 def MultRxRy16: FMULT16_ins<"mult", IIAlu> {
599 let isCommutable = 1;
600 let neverHasSideEffects = 1;
604 def MultuRxRy16: FMULT16_ins<"multu", IIAlu> {
605 let isCommutable = 1;
606 let neverHasSideEffects = 1;
611 // Format: MULT rx, ry MIPS16e
612 // Purpose: Multiply Word
613 // To multiply 32-bit signed integers.
615 def MultRxRyRz16: FMULT16_LO_ins<"mult", IIAlu> {
616 let isCommutable = 1;
617 let neverHasSideEffects = 1;
622 // Format: MULTU rx, ry MIPS16e
623 // Purpose: Multiply Unsigned Word
624 // To multiply 32-bit unsigned integers.
626 def MultuRxRyRz16: FMULT16_LO_ins<"multu", IIAlu> {
627 let isCommutable = 1;
628 let neverHasSideEffects = 1;
633 // Format: NEG rx, ry MIPS16e
635 // To negate an integer value.
637 def NegRxRy16: FUnaryRR16_ins<0b11101, "neg", IIAlu>;
640 // Format: NOT rx, ry MIPS16e
642 // To complement an integer value
644 def NotRxRy16: FUnaryRR16_ins<0b01111, "not", IIAlu>;
647 // Format: OR rx, ry MIPS16e
649 // To do a bitwise logical OR.
651 def OrRxRxRy16: FRxRxRy16_ins<0b01101, "or", IIAlu>, ArithLogic16Defs<1>;
654 // Format: RESTORE {ra,}{s0/s1/s0-1,}{framesize}
655 // (All args are optional) MIPS16e
656 // Purpose: Restore Registers and Deallocate Stack Frame
657 // To deallocate a stack frame before exit from a subroutine,
658 // restoring return address and static registers, and adjusting
662 // fixed form for restoring RA and the frame
663 // for direct object emitter, encoding needs to be adjusted for the
666 let ra=1, s=0,s0=1,s1=1 in
668 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
669 "restore \t$$ra, $$s0, $$s1, $frame_size", [], IILoad >, MayLoad {
670 let isCodeGenOnly = 1;
674 // Format: SAVE {ra,}{s0/s1/s0-1,}{framesize} (All arguments are optional)
676 // Purpose: Save Registers and Set Up Stack Frame
677 // To set up a stack frame on entry to a subroutine,
678 // saving return address and static registers, and adjusting stack
680 let ra=1, s=1,s0=1,s1=1 in
682 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
683 "save \t$$ra, $$s0, $$s1, $frame_size", [], IIStore >, MayStore {
684 let isCodeGenOnly = 1;
687 // Format: SB ry, offset(rx) MIPS16e
688 // Purpose: Store Byte (Extended)
689 // To store a byte to memory.
692 FEXT_RRI16_mem2_ins<0b11000, "sb", mem16, IIStore>, MayStore;
695 // The Sel(T) instructions are pseudos
696 // T means that they use T8 implicitly.
699 // Format: SelBeqZ rd, rs, rt
700 // Purpose: if rt==0, do nothing
703 def SelBeqZ: Sel<0b00100, "beqz", IIAlu>;
706 // Format: SelTBteqZCmp rd, rs, rl, rr
707 // Purpose: b = Cmp rl, rr.
708 // If b==0 then do nothing.
709 // if b!=0 then rd = rs
711 def SelTBteqZCmp: SelT<0b000, "bteqz", 0b01010, "cmp", IIAlu>;
714 // Format: SelTBteqZCmpi rd, rs, rl, rr
715 // Purpose: b = Cmpi rl, imm.
716 // If b==0 then do nothing.
717 // if b!=0 then rd = rs
719 def SelTBteqZCmpi: SeliT<0b000, "bteqz", 0b01110, "cmpi", IIAlu>;
722 // Format: SelTBteqZSlt rd, rs, rl, rr
723 // Purpose: b = Slt rl, rr.
724 // If b==0 then do nothing.
725 // if b!=0 then rd = rs
727 def SelTBteqZSlt: SelT<0b000, "bteqz", 0b00010, "slt", IIAlu>;
730 // Format: SelTBteqZSlti rd, rs, rl, rr
731 // Purpose: b = Slti rl, imm.
732 // If b==0 then do nothing.
733 // if b!=0 then rd = rs
735 def SelTBteqZSlti: SeliT<0b000, "bteqz", 0b01010, "slti", IIAlu>;
738 // Format: SelTBteqZSltu rd, rs, rl, rr
739 // Purpose: b = Sltu rl, rr.
740 // If b==0 then do nothing.
741 // if b!=0 then rd = rs
743 def SelTBteqZSltu: SelT<0b000, "bteqz", 0b00011, "sltu", IIAlu>;
746 // Format: SelTBteqZSltiu rd, rs, rl, rr
747 // Purpose: b = Sltiu rl, imm.
748 // If b==0 then do nothing.
749 // if b!=0 then rd = rs
751 def SelTBteqZSltiu: SeliT<0b000, "bteqz", 0b01011, "sltiu", IIAlu>;
754 // Format: SelBnez rd, rs, rt
755 // Purpose: if rt!=0, do nothing
758 def SelBneZ: Sel<0b00101, "bnez", IIAlu>;
761 // Format: SelTBtneZCmp rd, rs, rl, rr
762 // Purpose: b = Cmp rl, rr.
763 // If b!=0 then do nothing.
764 // if b0=0 then rd = rs
766 def SelTBtneZCmp: SelT<0b001, "btnez", 0b01010, "cmp", IIAlu>;
769 // Format: SelTBtnezCmpi rd, rs, rl, rr
770 // Purpose: b = Cmpi rl, imm.
771 // If b!=0 then do nothing.
772 // if b==0 then rd = rs
774 def SelTBtneZCmpi: SeliT<0b000, "btnez", 0b01110, "cmpi", IIAlu>;
777 // Format: SelTBtneZSlt rd, rs, rl, rr
778 // Purpose: b = Slt rl, rr.
779 // If b!=0 then do nothing.
780 // if b==0 then rd = rs
782 def SelTBtneZSlt: SelT<0b001, "btnez", 0b00010, "slt", IIAlu>;
785 // Format: SelTBtneZSlti rd, rs, rl, rr
786 // Purpose: b = Slti rl, imm.
787 // If b!=0 then do nothing.
788 // if b==0 then rd = rs
790 def SelTBtneZSlti: SeliT<0b001, "btnez", 0b01010, "slti", IIAlu>;
793 // Format: SelTBtneZSltu rd, rs, rl, rr
794 // Purpose: b = Sltu rl, rr.
795 // If b!=0 then do nothing.
796 // if b==0 then rd = rs
798 def SelTBtneZSltu: SelT<0b001, "btnez", 0b00011, "sltu", IIAlu>;
801 // Format: SelTBtneZSltiu rd, rs, rl, rr
802 // Purpose: b = Slti rl, imm.
803 // If b!=0 then do nothing.
804 // if b==0 then rd = rs
806 def SelTBtneZSltiu: SeliT<0b001, "btnez", 0b01011, "sltiu", IIAlu>;
809 // Format: SH ry, offset(rx) MIPS16e
810 // Purpose: Store Halfword (Extended)
811 // To store a halfword to memory.
814 FEXT_RRI16_mem2_ins<0b11001, "sh", mem16, IIStore>, MayStore;
817 // Format: SLL rx, ry, sa MIPS16e
818 // Purpose: Shift Word Left Logical (Extended)
819 // To execute a left-shift of a word by a fixed number of bits—0 to 31 bits.
821 def SllX16: FEXT_SHIFT16_ins<0b00, "sll", IIAlu>;
824 // Format: SLLV ry, rx MIPS16e
825 // Purpose: Shift Word Left Logical Variable
826 // To execute a left-shift of a word by a variable number of bits.
828 def SllvRxRy16 : FRxRxRy16_ins<0b00100, "sllv", IIAlu>;
831 // Format: SLTI rx, immediate MIPS16e
832 // Purpose: Set on Less Than Immediate (Extended)
833 // To record the result of a less-than comparison with a constant.
835 def SltiCCRxImmX16: FEXT_CCRXI16_ins<0b01010, "slti", IIAlu>;
838 // Format: SLTIU rx, immediate MIPS16e
839 // Purpose: Set on Less Than Immediate Unsigned (Extended)
840 // To record the result of a less-than comparison with a constant.
842 def SltiuCCRxImmX16: FEXT_CCRXI16_ins<0b01011, "sltiu", IIAlu>;
845 // Format: SLT rx, ry MIPS16e
846 // Purpose: Set on Less Than
847 // To record the result of a less-than comparison.
849 def SltRxRy16: FRR16_ins<0b00010, "slt", IIAlu>;
851 def SltCCRxRy16: FCCRR16_ins<0b00010, "slt", IIAlu>;
853 // Format: SLTU rx, ry MIPS16e
854 // Purpose: Set on Less Than Unsigned
855 // To record the result of an unsigned less-than comparison.
857 def SltuRxRyRz16: FRRTR16_ins<0b00011, "sltu", IIAlu> {
862 def SltuCCRxRy16: FCCRR16_ins<0b00011, "sltu", IIAlu>;
864 // Format: SRAV ry, rx MIPS16e
865 // Purpose: Shift Word Right Arithmetic Variable
866 // To execute an arithmetic right-shift of a word by a variable
869 def SravRxRy16: FRxRxRy16_ins<0b00111, "srav", IIAlu>;
873 // Format: SRA rx, ry, sa MIPS16e
874 // Purpose: Shift Word Right Arithmetic (Extended)
875 // To execute an arithmetic right-shift of a word by a fixed
876 // number of bits—1 to 8 bits.
878 def SraX16: FEXT_SHIFT16_ins<0b11, "sra", IIAlu>;
882 // Format: SRLV ry, rx MIPS16e
883 // Purpose: Shift Word Right Logical Variable
884 // To execute a logical right-shift of a word by a variable
887 def SrlvRxRy16: FRxRxRy16_ins<0b00110, "srlv", IIAlu>;
891 // Format: SRL rx, ry, sa MIPS16e
892 // Purpose: Shift Word Right Logical (Extended)
893 // To execute a logical right-shift of a word by a fixed
894 // number of bits—1 to 31 bits.
896 def SrlX16: FEXT_SHIFT16_ins<0b10, "srl", IIAlu>;
899 // Format: SUBU rz, rx, ry MIPS16e
900 // Purpose: Subtract Unsigned Word
901 // To subtract 32-bit integers
903 def SubuRxRyRz16: FRRR16_ins<0b11, "subu", IIAlu>, ArithLogic16Defs<0>;
906 // Format: SW ry, offset(rx) MIPS16e
907 // Purpose: Store Word (Extended)
908 // To store a word to memory.
911 FEXT_RRI16_mem2_ins<0b11011, "sw", mem16, IIStore>, MayStore;
914 // Format: SW rx, offset(sp) MIPS16e
915 // Purpose: Store Word rx (SP-Relative)
916 // To store an SP-relative word to memory.
918 def SwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b11010, "sw", IIStore>, MayStore;
922 // Format: XOR rx, ry MIPS16e
924 // To do a bitwise logical XOR.
926 def XorRxRxRy16: FRxRxRy16_ins<0b01110, "xor", IIAlu>, ArithLogic16Defs<1>;
928 class Mips16Pat<dag pattern, dag result> : Pat<pattern, result> {
929 let Predicates = [InMips16Mode];
934 class ArithLogicU_pat<PatFrag OpNode, Instruction I> :
935 Mips16Pat<(OpNode CPU16Regs:$r),
938 def: ArithLogicU_pat<not, NotRxRy16>;
939 def: ArithLogicU_pat<ineg, NegRxRy16>;
941 class ArithLogic16_pat<SDNode OpNode, Instruction I> :
942 Mips16Pat<(OpNode CPU16Regs:$l, CPU16Regs:$r),
943 (I CPU16Regs:$l, CPU16Regs:$r)>;
945 def: ArithLogic16_pat<add, AdduRxRyRz16>;
946 def: ArithLogic16_pat<and, AndRxRxRy16>;
947 def: ArithLogic16_pat<mul, MultRxRyRz16>;
948 def: ArithLogic16_pat<or, OrRxRxRy16>;
949 def: ArithLogic16_pat<sub, SubuRxRyRz16>;
950 def: ArithLogic16_pat<xor, XorRxRxRy16>;
952 // Arithmetic and logical instructions with 2 register operands.
954 class ArithLogicI16_pat<SDNode OpNode, PatFrag imm_type, Instruction I> :
955 Mips16Pat<(OpNode CPU16Regs:$in, imm_type:$imm),
956 (I CPU16Regs:$in, imm_type:$imm)>;
958 def: ArithLogicI16_pat<add, immSExt16, AddiuRxRxImmX16>;
959 def: ArithLogicI16_pat<shl, immZExt5, SllX16>;
960 def: ArithLogicI16_pat<srl, immZExt5, SrlX16>;
961 def: ArithLogicI16_pat<sra, immZExt5, SraX16>;
963 class shift_rotate_reg16_pat<SDNode OpNode, Instruction I> :
964 Mips16Pat<(OpNode CPU16Regs:$r, CPU16Regs:$ra),
965 (I CPU16Regs:$r, CPU16Regs:$ra)>;
967 def: shift_rotate_reg16_pat<shl, SllvRxRy16>;
968 def: shift_rotate_reg16_pat<sra, SravRxRy16>;
969 def: shift_rotate_reg16_pat<srl, SrlvRxRy16>;
971 class LoadM16_pat<PatFrag OpNode, Instruction I> :
972 Mips16Pat<(OpNode addr16:$addr), (I addr16:$addr)>;
974 def: LoadM16_pat<sextloadi8, LbRxRyOffMemX16>;
975 def: LoadM16_pat<zextloadi8, LbuRxRyOffMemX16>;
976 def: LoadM16_pat<sextloadi16, LhRxRyOffMemX16>;
977 def: LoadM16_pat<zextloadi16, LhuRxRyOffMemX16>;
978 def: LoadM16_pat<load, LwRxRyOffMemX16>;
980 class StoreM16_pat<PatFrag OpNode, Instruction I> :
981 Mips16Pat<(OpNode CPU16Regs:$r, addr16:$addr),
982 (I CPU16Regs:$r, addr16:$addr)>;
984 def: StoreM16_pat<truncstorei8, SbRxRyOffMemX16>;
985 def: StoreM16_pat<truncstorei16, ShRxRyOffMemX16>;
986 def: StoreM16_pat<store, SwRxRyOffMemX16>;
988 // Unconditional branch
989 class UncondBranch16_pat<SDNode OpNode, Instruction I>:
990 Mips16Pat<(OpNode bb:$imm16), (I bb:$imm16)> {
991 let Predicates = [RelocPIC, InMips16Mode];
994 // Jump and Link (Call)
995 let isCall=1, hasDelaySlot=1 in
997 FRR16_JALRC<0, 0, 0, (outs), (ins CPU16Regs:$rs),
998 "jalr \t$rs", [(MipsJmpLink CPU16Regs:$rs)], IIBranch>;
1001 let isReturn=1, isTerminator=1, hasDelaySlot=1, isBarrier=1, hasCtrlDep=1,
1002 hasExtraSrcRegAllocReq = 1 in
1003 def RetRA16 : MipsPseudo16<(outs), (ins), "", [(MipsRet)]>;
1008 class SetCC_R16<PatFrag cond_op, Instruction I>:
1009 Mips16Pat<(cond_op CPU16Regs:$rx, CPU16Regs:$ry),
1010 (I CPU16Regs:$rx, CPU16Regs:$ry)>;
1012 class SetCC_I16<PatFrag cond_op, PatLeaf imm_type, Instruction I>:
1013 Mips16Pat<(cond_op CPU16Regs:$rx, imm_type:$imm16),
1014 (I CPU16Regs:$rx, imm_type:$imm16)>;
1017 def: Mips16Pat<(i32 addr16:$addr),
1018 (AddiuRxRyOffMemX16 addr16:$addr)>;
1021 // Large (>16 bit) immediate loads
1022 def : Mips16Pat<(i32 imm:$imm),
1023 (OrRxRxRy16 (SllX16 (LiRxImmX16 (HI16 imm:$imm)), 16),
1024 (LiRxImmX16 (LO16 imm:$imm)))>;
1026 // Carry MipsPatterns
1027 def : Mips16Pat<(subc CPU16Regs:$lhs, CPU16Regs:$rhs),
1028 (SubuRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1029 def : Mips16Pat<(addc CPU16Regs:$lhs, CPU16Regs:$rhs),
1030 (AdduRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1031 def : Mips16Pat<(addc CPU16Regs:$src, immSExt16:$imm),
1032 (AddiuRxRxImmX16 CPU16Regs:$src, imm:$imm)>;
1035 // Some branch conditional patterns are not generated by llvm at this time.
1036 // Some are for seemingly arbitrary reasons not used: i.e. with signed number
1037 // comparison they are used and for unsigned a different pattern is used.
1038 // I am pushing upstream from the full mips16 port and it seemed that I needed
1039 // these earlier and the mips32 port has these but now I cannot create test
1040 // cases that use these patterns. While I sort this all out I will leave these
1041 // extra patterns commented out and if I can be sure they are really not used,
1042 // I will delete the code. I don't want to check the code in uncommented without
1043 // a valid test case. In some cases, the compiler is generating patterns with
1044 // setcc instead and earlier I had implemented setcc first so may have masked
1045 // the problem. The setcc variants are suboptimal for mips16 so I may wantto
1046 // figure out how to enable the brcond patterns or else possibly new
1047 // combinations of of brcond and setcc.
1053 <(brcond (i32 (seteq CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1054 (BteqzT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1059 <(brcond (i32 (seteq CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1060 (BteqzT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1064 <(brcond (i32 (seteq CPU16Regs:$rx, 0)), bb:$targ16),
1065 (BeqzRxImmX16 CPU16Regs:$rx, bb:$targ16)
1069 // bcond-setgt (do we need to have this pair of setlt, setgt??)
1072 <(brcond (i32 (setgt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1073 (BtnezT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1080 <(brcond (i32 (setge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1081 (BteqzT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1085 // never called because compiler transforms a >= k to a > (k-1)
1087 <(brcond (i32 (setge CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1088 (BteqzT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1095 <(brcond (i32 (setlt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1096 (BtnezT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1100 <(brcond (i32 (setlt CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1101 (BtnezT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1108 <(brcond (i32 (setle CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1109 (BteqzT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1116 <(brcond (i32 (setne CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1117 (BtnezT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1121 <(brcond (i32 (setne CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1122 (BtnezT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1126 <(brcond (i32 (setne CPU16Regs:$rx, 0)), bb:$targ16),
1127 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1131 // This needs to be there but I forget which code will generate it
1134 <(brcond CPU16Regs:$rx, bb:$targ16),
1135 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1144 // <(brcond (i32 (setugt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1145 // (BtnezT8SltuX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1152 // <(brcond (i32 (setuge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1153 // (BteqzT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1161 // <(brcond (i32 (setult CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1162 // (BtnezT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1165 def: UncondBranch16_pat<br, BimmX16>;
1168 def: Mips16Pat<(i32 immSExt16:$in),
1169 (AddiuRxRxImmX16 (Move32R16 ZERO), immSExt16:$in)>;
1171 def: Mips16Pat<(i32 immZExt16:$in), (LiRxImmX16 immZExt16:$in)>;
1177 <(MipsDivRem CPU16Regs:$rx, CPU16Regs:$ry),
1178 (DivRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1184 <(MipsDivRemU CPU16Regs:$rx, CPU16Regs:$ry),
1185 (DivuRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1190 // if !(a < b) x = y
1192 def : Mips16Pat<(select (i32 (setge CPU16Regs:$a, CPU16Regs:$b)),
1193 CPU16Regs:$x, CPU16Regs:$y),
1194 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1195 CPU16Regs:$a, CPU16Regs:$b)>;
1202 def : Mips16Pat<(select (i32 (setgt CPU16Regs:$a, CPU16Regs:$b)),
1203 CPU16Regs:$x, CPU16Regs:$y),
1204 (SelTBtneZSlt CPU16Regs:$x, CPU16Regs:$y,
1205 CPU16Regs:$b, CPU16Regs:$a)>;
1210 // if !(a < b) x = y;
1213 (select (i32 (setuge CPU16Regs:$a, CPU16Regs:$b)),
1214 CPU16Regs:$x, CPU16Regs:$y),
1215 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1216 CPU16Regs:$a, CPU16Regs:$b)>;
1223 def : Mips16Pat<(select (i32 (setugt CPU16Regs:$a, CPU16Regs:$b)),
1224 CPU16Regs:$x, CPU16Regs:$y),
1225 (SelTBtneZSltu CPU16Regs:$x, CPU16Regs:$y,
1226 CPU16Regs:$b, CPU16Regs:$a)>;
1230 // due to an llvm optimization, i don't think that this will ever
1231 // be used. This is transformed into x = (a > k-1)?x:y
1236 // (select (i32 (setge CPU16Regs:$lhs, immSExt16:$rhs)),
1237 // CPU16Regs:$T, CPU16Regs:$F),
1238 // (SelTBteqZSlti CPU16Regs:$T, CPU16Regs:$F,
1239 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1242 // (select (i32 (setuge CPU16Regs:$lhs, immSExt16:$rhs)),
1243 // CPU16Regs:$T, CPU16Regs:$F),
1244 // (SelTBteqZSltiu CPU16Regs:$T, CPU16Regs:$F,
1245 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1250 // if !(a < k) x = y;
1253 (select (i32 (setlt CPU16Regs:$a, immSExt16:$b)),
1254 CPU16Regs:$x, CPU16Regs:$y),
1255 (SelTBtneZSlti CPU16Regs:$x, CPU16Regs:$y,
1256 CPU16Regs:$a, immSExt16:$b)>;
1262 // x = (a <= b)? x : y
1266 def : Mips16Pat<(select (i32 (setle CPU16Regs:$a, CPU16Regs:$b)),
1267 CPU16Regs:$x, CPU16Regs:$y),
1268 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1269 CPU16Regs:$b, CPU16Regs:$a)>;
1273 // x = (a <= b)? x : y
1277 def : Mips16Pat<(select (i32 (setule CPU16Regs:$a, CPU16Regs:$b)),
1278 CPU16Regs:$x, CPU16Regs:$y),
1279 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1280 CPU16Regs:$b, CPU16Regs:$a)>;
1284 // x = (a == b)? x : y
1286 // if (a != b) x = y
1288 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, CPU16Regs:$b)),
1289 CPU16Regs:$x, CPU16Regs:$y),
1290 (SelTBteqZCmp CPU16Regs:$x, CPU16Regs:$y,
1291 CPU16Regs:$b, CPU16Regs:$a)>;
1295 // x = (a == 0)? x : y
1297 // if (a != 0) x = y
1299 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, 0)),
1300 CPU16Regs:$x, CPU16Regs:$y),
1301 (SelBeqZ CPU16Regs:$x, CPU16Regs:$y,
1307 // x = (a == k)? x : y
1309 // if (a != k) x = y
1311 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, immZExt16:$k)),
1312 CPU16Regs:$x, CPU16Regs:$y),
1313 (SelTBteqZCmpi CPU16Regs:$x, CPU16Regs:$y,
1314 CPU16Regs:$a, immZExt16:$k)>;
1319 // x = (a != b)? x : y
1321 // if (a == b) x = y
1324 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, CPU16Regs:$b)),
1325 CPU16Regs:$x, CPU16Regs:$y),
1326 (SelTBtneZCmp CPU16Regs:$x, CPU16Regs:$y,
1327 CPU16Regs:$b, CPU16Regs:$a)>;
1331 // x = (a != 0)? x : y
1333 // if (a == 0) x = y
1335 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, 0)),
1336 CPU16Regs:$x, CPU16Regs:$y),
1337 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1345 def : Mips16Pat<(select CPU16Regs:$a,
1346 CPU16Regs:$x, CPU16Regs:$y),
1347 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1353 // x = (a != k)? x : y
1355 // if (a == k) x = y
1357 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, immZExt16:$k)),
1358 CPU16Regs:$x, CPU16Regs:$y),
1359 (SelTBtneZCmpi CPU16Regs:$x, CPU16Regs:$y,
1360 CPU16Regs:$a, immZExt16:$k)>;
1363 // When writing C code to test setxx these patterns,
1364 // some will be transformed into
1365 // other things. So we test using C code but using -O3 and -O0
1370 <(seteq CPU16Regs:$lhs,CPU16Regs:$rhs),
1371 (SltiuCCRxImmX16 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs), 1)>;
1374 <(seteq CPU16Regs:$lhs, 0),
1375 (SltiuCCRxImmX16 CPU16Regs:$lhs, 1)>;
1383 <(setge CPU16Regs:$lhs, CPU16Regs:$rhs),
1384 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1388 // For constants, llvm transforms this to:
1389 // x > (k -1) and then reverses the operands to use setlt. So this pattern
1390 // is not used now by the compiler. (Presumably checking that k-1 does not
1391 // overflow). The compiler never uses this at a the current time, due to
1392 // other optimizations.
1395 // <(setge CPU16Regs:$lhs, immSExt16:$rhs),
1396 // (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, immSExt16:$rhs),
1397 // (LiRxImmX16 1))>;
1399 // This catches the x >= -32768 case by transforming it to x > -32769
1402 <(setgt CPU16Regs:$lhs, -32769),
1403 (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, -32768),
1412 <(setgt CPU16Regs:$lhs, CPU16Regs:$rhs),
1413 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1419 <(setle CPU16Regs:$lhs, CPU16Regs:$rhs),
1420 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImmX16 1))>;
1425 def: SetCC_R16<setlt, SltCCRxRy16>;
1427 def: SetCC_I16<setlt, immSExt16, SltiCCRxImmX16>;
1433 <(setne CPU16Regs:$lhs,CPU16Regs:$rhs),
1434 (SltuCCRxRy16 (LiRxImmX16 0),
1435 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs))>;
1442 <(setuge CPU16Regs:$lhs, CPU16Regs:$rhs),
1443 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1446 // this pattern will never be used because the compiler will transform
1447 // x >= k to x > (k - 1) and then use SLT
1450 // <(setuge CPU16Regs:$lhs, immZExt16:$rhs),
1451 // (XorRxRxRy16 (SltiuCCRxImmX16 CPU16Regs:$lhs, immZExt16:$rhs),
1452 // (LiRxImmX16 1))>;
1458 <(setugt CPU16Regs:$lhs, CPU16Regs:$rhs),
1459 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1465 <(setule CPU16Regs:$lhs, CPU16Regs:$rhs),
1466 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImmX16 1))>;
1471 def: SetCC_R16<setult, SltuCCRxRy16>;
1473 def: SetCC_I16<setult, immSExt16, SltiuCCRxImmX16>;
1475 def: Mips16Pat<(add CPU16Regs:$hi, (MipsLo tglobaladdr:$lo)),
1476 (AddiuRxRxImmX16 CPU16Regs:$hi, tglobaladdr:$lo)>;
1480 def : Mips16Pat<(MipsHi tglobaltlsaddr:$in),
1481 (SllX16 (LiRxImmX16 tglobaltlsaddr:$in), 16)>;
1484 class Wrapper16Pat<SDNode node, Instruction ADDiuOp, RegisterClass RC>:
1485 Mips16Pat<(MipsWrapper RC:$gp, node:$in),
1486 (ADDiuOp RC:$gp, node:$in)>;
1489 def : Wrapper16Pat<tglobaladdr, AddiuRxRxImmX16, CPU16Regs>;
1490 def : Wrapper16Pat<tglobaltlsaddr, AddiuRxRxImmX16, CPU16Regs>;