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 FRRTR16_ins<string asmstr> :
287 MipsPseudo16<(outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
288 !strconcat(asmstr, "\t$rx, $ry\n\tmove\t$rz, $$t8"), []> ;
291 // maybe refactor but need a $zero as a dummy first parameter
293 class FRR16_div_ins<bits<5> f, string asmstr, InstrItinClass itin> :
294 FRR16<f, (outs ), (ins CPU16Regs:$rx, CPU16Regs:$ry),
295 !strconcat(asmstr, "\t$$zero, $rx, $ry"), [], itin> ;
297 class FUnaryRR16_ins<bits<5> f, string asmstr, InstrItinClass itin> :
298 FRR16<f, (outs CPU16Regs:$rx), (ins CPU16Regs:$ry),
299 !strconcat(asmstr, "\t$rx, $ry"), [], itin> ;
302 class FRR16_M_ins<bits<5> f, string asmstr,
303 InstrItinClass itin> :
304 FRR16<f, (outs CPU16Regs:$rx), (ins),
305 !strconcat(asmstr, "\t$rx"), [], itin>;
307 class FRxRxRy16_ins<bits<5> f, string asmstr,
308 InstrItinClass itin> :
309 FRR16<f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
310 !strconcat(asmstr, "\t$rz, $ry"),
312 let Constraints = "$rx = $rz";
316 class FRR16_JALRC_RA_only_ins<bits<1> nd_, bits<1> l_,
317 string asmstr, InstrItinClass itin>:
318 FRR16_JALRC<nd_, l_, 1, (outs), (ins), !strconcat(asmstr, "\t $$ra"),
322 class FRR16_JALRC_ins<bits<1> nd, bits<1> l, bits<1> ra,
323 string asmstr, InstrItinClass itin>:
324 FRR16_JALRC<nd, l, ra, (outs), (ins CPU16Regs:$rx),
325 !strconcat(asmstr, "\t $rx"), [], itin> ;
328 // RRR-type instruction format
331 class FRRR16_ins<bits<2> _f, string asmstr, InstrItinClass itin> :
332 FRRR16<_f, (outs CPU16Regs:$rz), (ins CPU16Regs:$rx, CPU16Regs:$ry),
333 !strconcat(asmstr, "\t$rz, $rx, $ry"), [], itin>;
336 // These Sel patterns support the generation of conditional move
337 // pseudo instructions.
339 // The nomenclature uses the components making up the pseudo and may
340 // be a bit counter intuitive when compared with the end result we seek.
341 // For example using a bqez in the example directly below results in the
342 // conditional move being done if the tested register is not zero.
343 // I considered in easier to check by keeping the pseudo consistent with
344 // it's components but it could have been done differently.
346 // The simplest case is when can test and operand directly and do the
347 // conditional move based on a simple mips16 conditional
348 // branch instruction.
350 // if $op == beqz or bnez:
355 // if $op == beqz, then if $rt != 0, then the conditional assignment
356 // $rd = $rs is done.
358 // if $op == bnez, then if $rt == 0, then the conditional assignment
359 // $rd = $rs is done.
361 // So this pseudo class only has one operand, i.e. op
363 class Sel<string op>:
364 MipsPseudo16<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
366 !strconcat(op, "\t$rt, .+4\n\t\n\tmove $rd, $rs"), []> {
367 //let isCodeGenOnly=1;
368 let Constraints = "$rd = $rd_";
369 let usesCustomInserter = 1;
373 // The next two instruction classes allow for an operand which tests
374 // two operands and returns a value in register T8 and
375 //then does a conditional branch based on the value of T8
378 // op2 can be cmpi or slti/sltiu
379 // op1 can bteqz or btnez
380 // the operands for op2 are a register and a signed constant
382 // $op2 $t, $imm ;test register t and branch conditionally
383 // $op1 .+4 ;op1 is a conditional branch
387 class SeliT<string op1, string op2>:
388 MipsPseudo16<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
389 CPU16Regs:$rl, simm16:$imm),
391 !strconcat("\t$rl, $imm\n\t",
392 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), []> {
394 let Constraints = "$rd = $rd_";
398 // op2 can be cmp or slt/sltu
399 // op1 can be bteqz or btnez
400 // the operands for op2 are two registers
401 // op1 is a conditional branch
404 // $op2 $rl, $rr ;test registers rl,rr
405 // $op1 .+4 ;op2 is a conditional branch
409 class SelT<string op1, string op2>:
410 MipsPseudo16<(outs CPU16Regs:$rd_),
411 (ins CPU16Regs:$rd, CPU16Regs:$rs,
412 CPU16Regs:$rl, CPU16Regs:$rr),
414 !strconcat("\t$rl, $rr\n\t",
415 !strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), []> {
417 let Constraints = "$rd = $rd_";
423 def imm32: Operand<i32>;
426 MipsPseudo16<(outs), (ins imm32:$imm), "\t.word $imm", []>;
429 MipsPseudo16<(outs), (ins CPU16Regs:$rx, imm32:$imm),
430 "lw\t$rx, 1f\n\tb\t2f\n\t.align\t2\n1: \t.word\t$imm\n2:", []>;
434 // Some general instruction class info
438 class ArithLogic16Defs<bit isCom=0> {
440 bit isCommutable = isCom;
441 bit isReMaterializable = 1;
442 bit neverHasSideEffects = 1;
447 bit isTerminator = 1;
453 bit isTerminator = 1;
466 // Format: ADDIU rx, immediate MIPS16e
467 // Purpose: Add Immediate Unsigned Word (2-Operand, Extended)
468 // To add a constant to a 32-bit integer.
470 def AddiuRxImmX16: FEXT_RI16_ins<0b01001, "addiu", IIAlu>;
472 def AddiuRxRxImm16: F2RI16_ins<0b01001, "addiu", IIAlu>,
473 ArithLogic16Defs<0> {
474 let AddedComplexity = 5;
476 def AddiuRxRxImmX16: FEXT_2RI16_ins<0b01001, "addiu", IIAlu>,
477 ArithLogic16Defs<0> {
478 let isCodeGenOnly = 1;
481 def AddiuRxRyOffMemX16:
482 FEXT_RRI_A16_mem_ins<0, "addiu", mem16_ea, IIAlu>;
486 // Format: ADDIU rx, pc, immediate MIPS16e
487 // Purpose: Add Immediate Unsigned Word (3-Operand, PC-Relative, Extended)
488 // To add a constant to the program counter.
490 def AddiuRxPcImmX16: FEXT_RI16_PC_ins<0b00001, "addiu", IIAlu>;
493 // Format: ADDIU sp, immediate MIPS16e
494 // Purpose: Add Immediate Unsigned Word (2-Operand, SP-Relative, Extended)
495 // To add a constant to the stack pointer.
498 : FI816_SP_ins<0b011, "addiu", IIAlu> {
501 let AddedComplexity = 5;
505 : FEXT_I816_SP_ins<0b011, "addiu", IIAlu> {
511 // Format: ADDU rz, rx, ry MIPS16e
512 // Purpose: Add Unsigned Word (3-Operand)
513 // To add 32-bit integers.
516 def AdduRxRyRz16: FRRR16_ins<01, "addu", IIAlu>, ArithLogic16Defs<1>;
519 // Format: AND rx, ry MIPS16e
521 // To do a bitwise logical AND.
523 def AndRxRxRy16: FRxRxRy16_ins<0b01100, "and", IIAlu>, ArithLogic16Defs<1>;
527 // Format: BEQZ rx, offset MIPS16e
528 // Purpose: Branch on Equal to Zero
529 // To test a GPR then do a PC-relative conditional branch.
531 def BeqzRxImm16: FRI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
535 // Format: BEQZ rx, offset MIPS16e
536 // Purpose: Branch on Equal to Zero (Extended)
537 // To test a GPR then do a PC-relative conditional branch.
539 def BeqzRxImmX16: FEXT_RI16_B_ins<0b00100, "beqz", IIAlu>, cbranch16;
541 // Format: B offset MIPS16e
542 // Purpose: Unconditional Branch
543 // To do an unconditional PC-relative branch.
545 def BimmX16: FEXT_I16_ins<0b00010, "b", IIAlu>, branch16;
548 // Format: BNEZ rx, offset MIPS16e
549 // Purpose: Branch on Not Equal to Zero
550 // To test a GPR then do a PC-relative conditional branch.
552 def BnezRxImm16: FRI16_B_ins<0b00101, "bnez", IIAlu>, cbranch16;
555 // Format: BNEZ rx, offset MIPS16e
556 // Purpose: Branch on Not Equal to Zero (Extended)
557 // To test a GPR then do a PC-relative conditional branch.
559 def BnezRxImmX16: FEXT_RI16_B_ins<0b00101, "bnez", IIAlu>, cbranch16;
562 // Format: BTEQZ offset MIPS16e
563 // Purpose: Branch on T Equal to Zero (Extended)
564 // To test special register T then do a PC-relative conditional branch.
566 def BteqzX16: FEXT_I816_ins<0b000, "bteqz", IIAlu>, cbranch16 {
570 def BteqzT8CmpX16: FEXT_T8I816_ins<"bteqz", "cmp">, cbranch16;
572 def BteqzT8CmpiX16: FEXT_T8I8I16_ins<"bteqz", "cmpi">,
575 def BteqzT8SltX16: FEXT_T8I816_ins<"bteqz", "slt">, cbranch16;
577 def BteqzT8SltuX16: FEXT_T8I816_ins<"bteqz", "sltu">, cbranch16;
579 def BteqzT8SltiX16: FEXT_T8I8I16_ins<"bteqz", "slti">, cbranch16;
581 def BteqzT8SltiuX16: FEXT_T8I8I16_ins<"bteqz", "sltiu">,
585 // Format: BTNEZ offset MIPS16e
586 // Purpose: Branch on T Not Equal to Zero (Extended)
587 // To test special register T then do a PC-relative conditional branch.
589 def BtnezX16: FEXT_I816_ins<0b001, "btnez", IIAlu> ,cbranch16 {
593 def BtnezT8CmpX16: FEXT_T8I816_ins<"btnez", "cmp">, cbranch16;
595 def BtnezT8CmpiX16: FEXT_T8I8I16_ins<"btnez", "cmpi">, cbranch16;
597 def BtnezT8SltX16: FEXT_T8I816_ins<"btnez", "slt">, cbranch16;
599 def BtnezT8SltuX16: FEXT_T8I816_ins<"btnez", "sltu">, cbranch16;
601 def BtnezT8SltiX16: FEXT_T8I8I16_ins<"btnez", "slti">, cbranch16;
603 def BtnezT8SltiuX16: FEXT_T8I8I16_ins<"btnez", "sltiu">,
607 // Format: CMP rx, ry MIPS16e
609 // To compare the contents of two GPRs.
611 def CmpRxRy16: FRR16_ins<0b01010, "cmp", IIAlu> {
616 // Format: CMPI rx, immediate MIPS16e
617 // Purpose: Compare Immediate
618 // To compare a constant with the contents of a GPR.
620 def CmpiRxImm16: FRI16_ins<0b01110, "cmpi", IIAlu> {
625 // Format: CMPI rx, immediate MIPS16e
626 // Purpose: Compare Immediate (Extended)
627 // To compare a constant with the contents of a GPR.
629 def CmpiRxImmX16: FEXT_RI16_ins<0b01110, "cmpi", IIAlu> {
635 // Format: DIV rx, ry MIPS16e
636 // Purpose: Divide Word
637 // To divide 32-bit signed integers.
639 def DivRxRy16: FRR16_div_ins<0b11010, "div", IIAlu> {
644 // Format: DIVU rx, ry MIPS16e
645 // Purpose: Divide Unsigned Word
646 // To divide 32-bit unsigned integers.
648 def DivuRxRy16: FRR16_div_ins<0b11011, "divu", IIAlu> {
652 // Format: JAL target MIPS16e
653 // Purpose: Jump and Link
654 // To execute a procedure call within the current 256 MB-aligned
655 // region and preserve the current ISA.
658 def Jal16 : FJAL16_ins<0b0, "jal", IIAlu> {
660 let hasDelaySlot = 0; // not true, but we add the nop for now
666 // Format: JR ra MIPS16e
667 // Purpose: Jump Register Through Register ra
668 // To execute a branch to the instruction address in the return
672 def JrRa16: FRR16_JALRC_RA_only_ins<0, 0, "jr", IIAlu> {
674 let isIndirectBranch = 1;
675 let hasDelaySlot = 1;
680 def JrcRa16: FRR16_JALRC_RA_only_ins<1, 1, "jrc", IIAlu> {
682 let isIndirectBranch = 1;
687 def JrcRx16: FRR16_JALRC_ins<1, 1, 0, "jrc", IIAlu> {
689 let isIndirectBranch = 1;
694 // Format: LB ry, offset(rx) MIPS16e
695 // Purpose: Load Byte (Extended)
696 // To load a byte from memory as a signed value.
698 def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad{
699 let isCodeGenOnly = 1;
703 // Format: LBU ry, offset(rx) MIPS16e
704 // Purpose: Load Byte Unsigned (Extended)
705 // To load a byte from memory as a unsigned value.
707 def LbuRxRyOffMemX16:
708 FEXT_RRI16_mem_ins<0b10100, "lbu", mem16, IILoad>, MayLoad {
709 let isCodeGenOnly = 1;
713 // Format: LH ry, offset(rx) MIPS16e
714 // Purpose: Load Halfword signed (Extended)
715 // To load a halfword from memory as a signed value.
717 def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad{
718 let isCodeGenOnly = 1;
722 // Format: LHU ry, offset(rx) MIPS16e
723 // Purpose: Load Halfword unsigned (Extended)
724 // To load a halfword from memory as an unsigned value.
726 def LhuRxRyOffMemX16:
727 FEXT_RRI16_mem_ins<0b10100, "lhu", mem16, IILoad>, MayLoad {
728 let isCodeGenOnly = 1;
732 // Format: LI rx, immediate MIPS16e
733 // Purpose: Load Immediate
734 // To load a constant into a GPR.
736 def LiRxImm16: FRI16_ins<0b01101, "li", IIAlu>;
739 // Format: LI rx, immediate MIPS16e
740 // Purpose: Load Immediate (Extended)
741 // To load a constant into a GPR.
743 def LiRxImmX16: FEXT_RI16_ins<0b01101, "li", IIAlu>;
746 // Format: LW ry, offset(rx) MIPS16e
747 // Purpose: Load Word (Extended)
748 // To load a word from memory as a signed value.
750 def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad{
751 let isCodeGenOnly = 1;
754 // Format: LW rx, offset(sp) MIPS16e
755 // Purpose: Load Word (SP-Relative, Extended)
756 // To load an SP-relative word from memory as a signed value.
758 def LwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b10110, "lw", IILoad>, MayLoad{
763 // Format: MOVE r32, rz MIPS16e
765 // To move the contents of a GPR to a GPR.
767 def Move32R16: FI8_MOV32R16_ins<"move", IIAlu>;
770 // Format: MOVE ry, r32 MIPS16e
772 // To move the contents of a GPR to a GPR.
774 def MoveR3216: FI8_MOVR3216_ins<"move", IIAlu>;
777 // Format: MFHI rx MIPS16e
778 // Purpose: Move From HI Register
779 // To copy the special purpose HI register to a GPR.
781 def Mfhi16: FRR16_M_ins<0b10000, "mfhi", IIAlu> {
783 let neverHasSideEffects = 1;
787 // Format: MFLO rx MIPS16e
788 // Purpose: Move From LO Register
789 // To copy the special purpose LO register to a GPR.
791 def Mflo16: FRR16_M_ins<0b10010, "mflo", IIAlu> {
793 let neverHasSideEffects = 1;
797 // Pseudo Instruction for mult
799 def MultRxRy16: FMULT16_ins<"mult", IIAlu> {
800 let isCommutable = 1;
801 let neverHasSideEffects = 1;
805 def MultuRxRy16: FMULT16_ins<"multu", IIAlu> {
806 let isCommutable = 1;
807 let neverHasSideEffects = 1;
812 // Format: MULT rx, ry MIPS16e
813 // Purpose: Multiply Word
814 // To multiply 32-bit signed integers.
816 def MultRxRyRz16: FMULT16_LO_ins<"mult", IIAlu> {
817 let isCommutable = 1;
818 let neverHasSideEffects = 1;
823 // Format: MULTU rx, ry MIPS16e
824 // Purpose: Multiply Unsigned Word
825 // To multiply 32-bit unsigned integers.
827 def MultuRxRyRz16: FMULT16_LO_ins<"multu", IIAlu> {
828 let isCommutable = 1;
829 let neverHasSideEffects = 1;
834 // Format: NEG rx, ry MIPS16e
836 // To negate an integer value.
838 def NegRxRy16: FUnaryRR16_ins<0b11101, "neg", IIAlu>;
841 // Format: NOT rx, ry MIPS16e
843 // To complement an integer value
845 def NotRxRy16: FUnaryRR16_ins<0b01111, "not", IIAlu>;
848 // Format: OR rx, ry MIPS16e
850 // To do a bitwise logical OR.
852 def OrRxRxRy16: FRxRxRy16_ins<0b01101, "or", IIAlu>, ArithLogic16Defs<1>;
855 // Format: RESTORE {ra,}{s0/s1/s0-1,}{framesize}
856 // (All args are optional) MIPS16e
857 // Purpose: Restore Registers and Deallocate Stack Frame
858 // To deallocate a stack frame before exit from a subroutine,
859 // restoring return address and static registers, and adjusting
863 // fixed form for restoring RA and the frame
864 // for direct object emitter, encoding needs to be adjusted for the
867 let ra=1, s=0,s0=1,s1=1 in
869 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
870 "restore\t$$ra, $$s0, $$s1, $frame_size", [], IILoad >, MayLoad {
871 let isCodeGenOnly = 1;
872 let Defs = [S0, S1, RA, SP];
876 // Use Restore to increment SP since SP is not a Mip 16 register, this
877 // is an easy way to do that which does not require a register.
879 let ra=0, s=0,s0=0,s1=0 in
881 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
882 "restore\t$frame_size", [], IILoad >, MayLoad {
883 let isCodeGenOnly = 1;
889 // Format: SAVE {ra,}{s0/s1/s0-1,}{framesize} (All arguments are optional)
891 // Purpose: Save Registers and Set Up Stack Frame
892 // To set up a stack frame on entry to a subroutine,
893 // saving return address and static registers, and adjusting stack
895 let ra=1, s=1,s0=1,s1=1 in
897 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
898 "save\t$$ra, $$s0, $$s1, $frame_size", [], IIStore >, MayStore {
899 let isCodeGenOnly = 1;
900 let Uses = [RA, SP, S0, S1];
905 // Use Save to decrement the SP by a constant since SP is not
906 // a Mips16 register.
908 let ra=0, s=0,s0=0,s1=0 in
910 FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
911 "save\t$frame_size", [], IIStore >, MayStore {
912 let isCodeGenOnly = 1;
917 // Format: SB ry, offset(rx) MIPS16e
918 // Purpose: Store Byte (Extended)
919 // To store a byte to memory.
922 FEXT_RRI16_mem2_ins<0b11000, "sb", mem16, IIStore>, MayStore;
925 // The Sel(T) instructions are pseudos
926 // T means that they use T8 implicitly.
929 // Format: SelBeqZ rd, rs, rt
930 // Purpose: if rt==0, do nothing
933 def SelBeqZ: Sel<"beqz">;
936 // Format: SelTBteqZCmp rd, rs, rl, rr
937 // Purpose: b = Cmp rl, rr.
938 // If b==0 then do nothing.
939 // if b!=0 then rd = rs
941 def SelTBteqZCmp: SelT<"bteqz", "cmp">;
944 // Format: SelTBteqZCmpi rd, rs, rl, rr
945 // Purpose: b = Cmpi rl, imm.
946 // If b==0 then do nothing.
947 // if b!=0 then rd = rs
949 def SelTBteqZCmpi: SeliT<"bteqz", "cmpi">;
952 // Format: SelTBteqZSlt rd, rs, rl, rr
953 // Purpose: b = Slt rl, rr.
954 // If b==0 then do nothing.
955 // if b!=0 then rd = rs
957 def SelTBteqZSlt: SelT<"bteqz", "slt">;
960 // Format: SelTBteqZSlti rd, rs, rl, rr
961 // Purpose: b = Slti rl, imm.
962 // If b==0 then do nothing.
963 // if b!=0 then rd = rs
965 def SelTBteqZSlti: SeliT<"bteqz", "slti">;
968 // Format: SelTBteqZSltu rd, rs, rl, rr
969 // Purpose: b = Sltu rl, rr.
970 // If b==0 then do nothing.
971 // if b!=0 then rd = rs
973 def SelTBteqZSltu: SelT<"bteqz", "sltu">;
976 // Format: SelTBteqZSltiu rd, rs, rl, rr
977 // Purpose: b = Sltiu rl, imm.
978 // If b==0 then do nothing.
979 // if b!=0 then rd = rs
981 def SelTBteqZSltiu: SeliT<"bteqz", "sltiu">;
984 // Format: SelBnez rd, rs, rt
985 // Purpose: if rt!=0, do nothing
988 def SelBneZ: Sel<"bnez">;
991 // Format: SelTBtneZCmp rd, rs, rl, rr
992 // Purpose: b = Cmp rl, rr.
993 // If b!=0 then do nothing.
994 // if b0=0 then rd = rs
996 def SelTBtneZCmp: SelT<"btnez", "cmp">;
999 // Format: SelTBtnezCmpi rd, rs, rl, rr
1000 // Purpose: b = Cmpi rl, imm.
1001 // If b!=0 then do nothing.
1002 // if b==0 then rd = rs
1004 def SelTBtneZCmpi: SeliT<"btnez", "cmpi">;
1007 // Format: SelTBtneZSlt rd, rs, rl, rr
1008 // Purpose: b = Slt rl, rr.
1009 // If b!=0 then do nothing.
1010 // if b==0 then rd = rs
1012 def SelTBtneZSlt: SelT<"btnez", "slt">;
1015 // Format: SelTBtneZSlti rd, rs, rl, rr
1016 // Purpose: b = Slti rl, imm.
1017 // If b!=0 then do nothing.
1018 // if b==0 then rd = rs
1020 def SelTBtneZSlti: SeliT<"btnez", "slti">;
1023 // Format: SelTBtneZSltu rd, rs, rl, rr
1024 // Purpose: b = Sltu rl, rr.
1025 // If b!=0 then do nothing.
1026 // if b==0 then rd = rs
1028 def SelTBtneZSltu: SelT<"btnez", "sltu">;
1031 // Format: SelTBtneZSltiu rd, rs, rl, rr
1032 // Purpose: b = Slti rl, imm.
1033 // If b!=0 then do nothing.
1034 // if b==0 then rd = rs
1036 def SelTBtneZSltiu: SeliT<"btnez", "sltiu">;
1039 // Format: SH ry, offset(rx) MIPS16e
1040 // Purpose: Store Halfword (Extended)
1041 // To store a halfword to memory.
1043 def ShRxRyOffMemX16:
1044 FEXT_RRI16_mem2_ins<0b11001, "sh", mem16, IIStore>, MayStore;
1047 // Format: SLL rx, ry, sa MIPS16e
1048 // Purpose: Shift Word Left Logical (Extended)
1049 // To execute a left-shift of a word by a fixed number of bits—0 to 31 bits.
1051 def SllX16: FEXT_SHIFT16_ins<0b00, "sll", IIAlu>;
1054 // Format: SLLV ry, rx MIPS16e
1055 // Purpose: Shift Word Left Logical Variable
1056 // To execute a left-shift of a word by a variable number of bits.
1058 def SllvRxRy16 : FRxRxRy16_ins<0b00100, "sllv", IIAlu>;
1060 // Format: SLTI rx, immediate MIPS16e
1061 // Purpose: Set on Less Than Immediate
1062 // To record the result of a less-than comparison with a constant.
1065 def SltiRxImm16: FRI16R_ins<0b01010, "slti", IIAlu> {
1070 // Format: SLTI rx, immediate MIPS16e
1071 // Purpose: Set on Less Than Immediate (Extended)
1072 // To record the result of a less-than comparison with a constant.
1075 def SltiRxImmX16: FEXT_RI16R_ins<0b01010, "slti", IIAlu> {
1079 def SltiCCRxImmX16: FEXT_CCRXI16_ins<"slti">;
1081 // Format: SLTIU rx, immediate MIPS16e
1082 // Purpose: Set on Less Than Immediate Unsigned
1083 // To record the result of a less-than comparison with a constant.
1086 def SltiuRxImm16: FRI16R_ins<0b01011, "sltiu", IIAlu> {
1091 // Format: SLTI rx, immediate MIPS16e
1092 // Purpose: Set on Less Than Immediate Unsigned (Extended)
1093 // To record the result of a less-than comparison with a constant.
1096 def SltiuRxImmX16: FEXT_RI16R_ins<0b01011, "sltiu", IIAlu> {
1100 // Format: SLTIU rx, immediate MIPS16e
1101 // Purpose: Set on Less Than Immediate Unsigned (Extended)
1102 // To record the result of a less-than comparison with a constant.
1104 def SltiuCCRxImmX16: FEXT_CCRXI16_ins<"sltiu">;
1107 // Format: SLT rx, ry MIPS16e
1108 // Purpose: Set on Less Than
1109 // To record the result of a less-than comparison.
1111 def SltRxRy16: FRR16_ins<0b00010, "slt", IIAlu>{
1115 def SltCCRxRy16: FCCRR16_ins<"slt">;
1117 // Format: SLTU rx, ry MIPS16e
1118 // Purpose: Set on Less Than Unsigned
1119 // To record the result of an unsigned less-than comparison.
1121 def SltuRxRy16: FRR16_ins<0b00011, "sltu", IIAlu>{
1125 def SltuRxRyRz16: FRRTR16_ins<"sltu"> {
1126 let isCodeGenOnly=1;
1131 def SltuCCRxRy16: FCCRR16_ins<"sltu">;
1133 // Format: SRAV ry, rx MIPS16e
1134 // Purpose: Shift Word Right Arithmetic Variable
1135 // To execute an arithmetic right-shift of a word by a variable
1138 def SravRxRy16: FRxRxRy16_ins<0b00111, "srav", IIAlu>;
1142 // Format: SRA rx, ry, sa MIPS16e
1143 // Purpose: Shift Word Right Arithmetic (Extended)
1144 // To execute an arithmetic right-shift of a word by a fixed
1145 // number of bits—1 to 8 bits.
1147 def SraX16: FEXT_SHIFT16_ins<0b11, "sra", IIAlu>;
1151 // Format: SRLV ry, rx MIPS16e
1152 // Purpose: Shift Word Right Logical Variable
1153 // To execute a logical right-shift of a word by a variable
1156 def SrlvRxRy16: FRxRxRy16_ins<0b00110, "srlv", IIAlu>;
1160 // Format: SRL rx, ry, sa MIPS16e
1161 // Purpose: Shift Word Right Logical (Extended)
1162 // To execute a logical right-shift of a word by a fixed
1163 // number of bits—1 to 31 bits.
1165 def SrlX16: FEXT_SHIFT16_ins<0b10, "srl", IIAlu>;
1168 // Format: SUBU rz, rx, ry MIPS16e
1169 // Purpose: Subtract Unsigned Word
1170 // To subtract 32-bit integers
1172 def SubuRxRyRz16: FRRR16_ins<0b11, "subu", IIAlu>, ArithLogic16Defs<0>;
1175 // Format: SW ry, offset(rx) MIPS16e
1176 // Purpose: Store Word (Extended)
1177 // To store a word to memory.
1179 def SwRxRyOffMemX16:
1180 FEXT_RRI16_mem2_ins<0b11011, "sw", mem16, IIStore>, MayStore;
1183 // Format: SW rx, offset(sp) MIPS16e
1184 // Purpose: Store Word rx (SP-Relative)
1185 // To store an SP-relative word to memory.
1187 def SwRxSpImmX16: FEXT_RI16_SP_explicit_ins<0b11010, "sw", IIStore>, MayStore;
1191 // Format: XOR rx, ry MIPS16e
1193 // To do a bitwise logical XOR.
1195 def XorRxRxRy16: FRxRxRy16_ins<0b01110, "xor", IIAlu>, ArithLogic16Defs<1>;
1197 class Mips16Pat<dag pattern, dag result> : Pat<pattern, result> {
1198 let Predicates = [InMips16Mode];
1201 // Unary Arith/Logic
1203 class ArithLogicU_pat<PatFrag OpNode, Instruction I> :
1204 Mips16Pat<(OpNode CPU16Regs:$r),
1207 def: ArithLogicU_pat<not, NotRxRy16>;
1208 def: ArithLogicU_pat<ineg, NegRxRy16>;
1210 class ArithLogic16_pat<SDNode OpNode, Instruction I> :
1211 Mips16Pat<(OpNode CPU16Regs:$l, CPU16Regs:$r),
1212 (I CPU16Regs:$l, CPU16Regs:$r)>;
1214 def: ArithLogic16_pat<add, AdduRxRyRz16>;
1215 def: ArithLogic16_pat<and, AndRxRxRy16>;
1216 def: ArithLogic16_pat<mul, MultRxRyRz16>;
1217 def: ArithLogic16_pat<or, OrRxRxRy16>;
1218 def: ArithLogic16_pat<sub, SubuRxRyRz16>;
1219 def: ArithLogic16_pat<xor, XorRxRxRy16>;
1221 // Arithmetic and logical instructions with 2 register operands.
1223 class ArithLogicI16_pat<SDNode OpNode, PatFrag imm_type, Instruction I> :
1224 Mips16Pat<(OpNode CPU16Regs:$in, imm_type:$imm),
1225 (I CPU16Regs:$in, imm_type:$imm)>;
1227 def: ArithLogicI16_pat<add, immSExt8, AddiuRxRxImm16>;
1228 def: ArithLogicI16_pat<add, immSExt16, AddiuRxRxImmX16>;
1229 def: ArithLogicI16_pat<shl, immZExt5, SllX16>;
1230 def: ArithLogicI16_pat<srl, immZExt5, SrlX16>;
1231 def: ArithLogicI16_pat<sra, immZExt5, SraX16>;
1233 class shift_rotate_reg16_pat<SDNode OpNode, Instruction I> :
1234 Mips16Pat<(OpNode CPU16Regs:$r, CPU16Regs:$ra),
1235 (I CPU16Regs:$r, CPU16Regs:$ra)>;
1237 def: shift_rotate_reg16_pat<shl, SllvRxRy16>;
1238 def: shift_rotate_reg16_pat<sra, SravRxRy16>;
1239 def: shift_rotate_reg16_pat<srl, SrlvRxRy16>;
1241 class LoadM16_pat<PatFrag OpNode, Instruction I> :
1242 Mips16Pat<(OpNode addr16:$addr), (I addr16:$addr)>;
1244 def: LoadM16_pat<sextloadi8, LbRxRyOffMemX16>;
1245 def: LoadM16_pat<zextloadi8, LbuRxRyOffMemX16>;
1246 def: LoadM16_pat<sextloadi16, LhRxRyOffMemX16>;
1247 def: LoadM16_pat<zextloadi16, LhuRxRyOffMemX16>;
1248 def: LoadM16_pat<load, LwRxRyOffMemX16>;
1250 class StoreM16_pat<PatFrag OpNode, Instruction I> :
1251 Mips16Pat<(OpNode CPU16Regs:$r, addr16:$addr),
1252 (I CPU16Regs:$r, addr16:$addr)>;
1254 def: StoreM16_pat<truncstorei8, SbRxRyOffMemX16>;
1255 def: StoreM16_pat<truncstorei16, ShRxRyOffMemX16>;
1256 def: StoreM16_pat<store, SwRxRyOffMemX16>;
1258 // Unconditional branch
1259 class UncondBranch16_pat<SDNode OpNode, Instruction I>:
1260 Mips16Pat<(OpNode bb:$imm16), (I bb:$imm16)> {
1261 let Predicates = [InMips16Mode];
1264 def : Mips16Pat<(MipsJmpLink (i32 tglobaladdr:$dst)),
1265 (Jal16 tglobaladdr:$dst)>;
1267 def : Mips16Pat<(MipsJmpLink (i32 texternalsym:$dst)),
1268 (Jal16 texternalsym:$dst)>;
1272 (brind CPU16Regs:$rs),
1273 (JrcRx16 CPU16Regs:$rs)>;
1275 // Jump and Link (Call)
1276 let isCall=1, hasDelaySlot=0 in
1278 FRR16_JALRC<0, 0, 0, (outs), (ins CPU16Regs:$rs),
1279 "jalrc \t$rs", [(MipsJmpLink CPU16Regs:$rs)], IIBranch>;
1282 let isReturn=1, isTerminator=1, hasDelaySlot=1, isBarrier=1, hasCtrlDep=1,
1283 hasExtraSrcRegAllocReq = 1 in
1284 def RetRA16 : MipsPseudo16<(outs), (ins), "", [(MipsRet)]>;
1289 class SetCC_R16<PatFrag cond_op, Instruction I>:
1290 Mips16Pat<(cond_op CPU16Regs:$rx, CPU16Regs:$ry),
1291 (I CPU16Regs:$rx, CPU16Regs:$ry)>;
1293 class SetCC_I16<PatFrag cond_op, PatLeaf imm_type, Instruction I>:
1294 Mips16Pat<(cond_op CPU16Regs:$rx, imm_type:$imm16),
1295 (I CPU16Regs:$rx, imm_type:$imm16)>;
1298 def: Mips16Pat<(i32 addr16:$addr),
1299 (AddiuRxRyOffMemX16 addr16:$addr)>;
1302 // Large (>16 bit) immediate loads
1303 def : Mips16Pat<(i32 imm:$imm),
1304 (OrRxRxRy16 (SllX16 (LiRxImmX16 (HI16 imm:$imm)), 16),
1305 (LiRxImmX16 (LO16 imm:$imm)))>;
1307 // Carry MipsPatterns
1308 def : Mips16Pat<(subc CPU16Regs:$lhs, CPU16Regs:$rhs),
1309 (SubuRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1310 def : Mips16Pat<(addc CPU16Regs:$lhs, CPU16Regs:$rhs),
1311 (AdduRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
1312 def : Mips16Pat<(addc CPU16Regs:$src, immSExt16:$imm),
1313 (AddiuRxRxImmX16 CPU16Regs:$src, imm:$imm)>;
1316 // Some branch conditional patterns are not generated by llvm at this time.
1317 // Some are for seemingly arbitrary reasons not used: i.e. with signed number
1318 // comparison they are used and for unsigned a different pattern is used.
1319 // I am pushing upstream from the full mips16 port and it seemed that I needed
1320 // these earlier and the mips32 port has these but now I cannot create test
1321 // cases that use these patterns. While I sort this all out I will leave these
1322 // extra patterns commented out and if I can be sure they are really not used,
1323 // I will delete the code. I don't want to check the code in uncommented without
1324 // a valid test case. In some cases, the compiler is generating patterns with
1325 // setcc instead and earlier I had implemented setcc first so may have masked
1326 // the problem. The setcc variants are suboptimal for mips16 so I may wantto
1327 // figure out how to enable the brcond patterns or else possibly new
1328 // combinations of of brcond and setcc.
1334 <(brcond (i32 (seteq CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1335 (BteqzT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1340 <(brcond (i32 (seteq CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1341 (BteqzT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1345 <(brcond (i32 (seteq CPU16Regs:$rx, 0)), bb:$targ16),
1346 (BeqzRxImmX16 CPU16Regs:$rx, bb:$targ16)
1350 // bcond-setgt (do we need to have this pair of setlt, setgt??)
1353 <(brcond (i32 (setgt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1354 (BtnezT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1361 <(brcond (i32 (setge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1362 (BteqzT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1366 // never called because compiler transforms a >= k to a > (k-1)
1368 <(brcond (i32 (setge CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1369 (BteqzT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1376 <(brcond (i32 (setlt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1377 (BtnezT8SltX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1381 <(brcond (i32 (setlt CPU16Regs:$rx, immSExt16:$imm)), bb:$imm16),
1382 (BtnezT8SltiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$imm16)
1389 <(brcond (i32 (setle CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1390 (BteqzT8SltX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1397 <(brcond (i32 (setne CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1398 (BtnezT8CmpX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1402 <(brcond (i32 (setne CPU16Regs:$rx, immZExt16:$imm)), bb:$targ16),
1403 (BtnezT8CmpiX16 CPU16Regs:$rx, immSExt16:$imm, bb:$targ16)
1407 <(brcond (i32 (setne CPU16Regs:$rx, 0)), bb:$targ16),
1408 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1412 // This needs to be there but I forget which code will generate it
1415 <(brcond CPU16Regs:$rx, bb:$targ16),
1416 (BnezRxImmX16 CPU16Regs:$rx, bb:$targ16)
1425 // <(brcond (i32 (setugt CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1426 // (BtnezT8SltuX16 CPU16Regs:$ry, CPU16Regs:$rx, bb:$imm16)
1433 // <(brcond (i32 (setuge CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1434 // (BteqzT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1442 // <(brcond (i32 (setult CPU16Regs:$rx, CPU16Regs:$ry)), bb:$imm16),
1443 // (BtnezT8SltuX16 CPU16Regs:$rx, CPU16Regs:$ry, bb:$imm16)
1446 def: UncondBranch16_pat<br, BimmX16>;
1449 def: Mips16Pat<(i32 immSExt16:$in),
1450 (AddiuRxRxImmX16 (Move32R16 ZERO), immSExt16:$in)>;
1452 def: Mips16Pat<(i32 immZExt16:$in), (LiRxImmX16 immZExt16:$in)>;
1458 <(MipsDivRem CPU16Regs:$rx, CPU16Regs:$ry),
1459 (DivRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1465 <(MipsDivRemU CPU16Regs:$rx, CPU16Regs:$ry),
1466 (DivuRxRy16 CPU16Regs:$rx, CPU16Regs:$ry)>;
1471 // if !(a < b) x = y
1473 def : Mips16Pat<(select (i32 (setge CPU16Regs:$a, CPU16Regs:$b)),
1474 CPU16Regs:$x, CPU16Regs:$y),
1475 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1476 CPU16Regs:$a, CPU16Regs:$b)>;
1483 def : Mips16Pat<(select (i32 (setgt CPU16Regs:$a, CPU16Regs:$b)),
1484 CPU16Regs:$x, CPU16Regs:$y),
1485 (SelTBtneZSlt CPU16Regs:$x, CPU16Regs:$y,
1486 CPU16Regs:$b, CPU16Regs:$a)>;
1491 // if !(a < b) x = y;
1494 (select (i32 (setuge CPU16Regs:$a, CPU16Regs:$b)),
1495 CPU16Regs:$x, CPU16Regs:$y),
1496 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1497 CPU16Regs:$a, CPU16Regs:$b)>;
1504 def : Mips16Pat<(select (i32 (setugt CPU16Regs:$a, CPU16Regs:$b)),
1505 CPU16Regs:$x, CPU16Regs:$y),
1506 (SelTBtneZSltu CPU16Regs:$x, CPU16Regs:$y,
1507 CPU16Regs:$b, CPU16Regs:$a)>;
1511 // due to an llvm optimization, i don't think that this will ever
1512 // be used. This is transformed into x = (a > k-1)?x:y
1517 // (select (i32 (setge CPU16Regs:$lhs, immSExt16:$rhs)),
1518 // CPU16Regs:$T, CPU16Regs:$F),
1519 // (SelTBteqZSlti CPU16Regs:$T, CPU16Regs:$F,
1520 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1523 // (select (i32 (setuge CPU16Regs:$lhs, immSExt16:$rhs)),
1524 // CPU16Regs:$T, CPU16Regs:$F),
1525 // (SelTBteqZSltiu CPU16Regs:$T, CPU16Regs:$F,
1526 // CPU16Regs:$lhs, immSExt16:$rhs)>;
1531 // if !(a < k) x = y;
1534 (select (i32 (setlt CPU16Regs:$a, immSExt16:$b)),
1535 CPU16Regs:$x, CPU16Regs:$y),
1536 (SelTBtneZSlti CPU16Regs:$x, CPU16Regs:$y,
1537 CPU16Regs:$a, immSExt16:$b)>;
1543 // x = (a <= b)? x : y
1547 def : Mips16Pat<(select (i32 (setle CPU16Regs:$a, CPU16Regs:$b)),
1548 CPU16Regs:$x, CPU16Regs:$y),
1549 (SelTBteqZSlt CPU16Regs:$x, CPU16Regs:$y,
1550 CPU16Regs:$b, CPU16Regs:$a)>;
1554 // x = (a <= b)? x : y
1558 def : Mips16Pat<(select (i32 (setule CPU16Regs:$a, CPU16Regs:$b)),
1559 CPU16Regs:$x, CPU16Regs:$y),
1560 (SelTBteqZSltu CPU16Regs:$x, CPU16Regs:$y,
1561 CPU16Regs:$b, CPU16Regs:$a)>;
1565 // x = (a == b)? x : y
1567 // if (a != b) x = y
1569 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, CPU16Regs:$b)),
1570 CPU16Regs:$x, CPU16Regs:$y),
1571 (SelTBteqZCmp CPU16Regs:$x, CPU16Regs:$y,
1572 CPU16Regs:$b, CPU16Regs:$a)>;
1576 // x = (a == 0)? x : y
1578 // if (a != 0) x = y
1580 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, 0)),
1581 CPU16Regs:$x, CPU16Regs:$y),
1582 (SelBeqZ CPU16Regs:$x, CPU16Regs:$y,
1588 // x = (a == k)? x : y
1590 // if (a != k) x = y
1592 def : Mips16Pat<(select (i32 (seteq CPU16Regs:$a, immZExt16:$k)),
1593 CPU16Regs:$x, CPU16Regs:$y),
1594 (SelTBteqZCmpi CPU16Regs:$x, CPU16Regs:$y,
1595 CPU16Regs:$a, immZExt16:$k)>;
1600 // x = (a != b)? x : y
1602 // if (a == b) x = y
1605 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, CPU16Regs:$b)),
1606 CPU16Regs:$x, CPU16Regs:$y),
1607 (SelTBtneZCmp CPU16Regs:$x, CPU16Regs:$y,
1608 CPU16Regs:$b, CPU16Regs:$a)>;
1612 // x = (a != 0)? x : y
1614 // if (a == 0) x = y
1616 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, 0)),
1617 CPU16Regs:$x, CPU16Regs:$y),
1618 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1626 def : Mips16Pat<(select CPU16Regs:$a,
1627 CPU16Regs:$x, CPU16Regs:$y),
1628 (SelBneZ CPU16Regs:$x, CPU16Regs:$y,
1634 // x = (a != k)? x : y
1636 // if (a == k) x = y
1638 def : Mips16Pat<(select (i32 (setne CPU16Regs:$a, immZExt16:$k)),
1639 CPU16Regs:$x, CPU16Regs:$y),
1640 (SelTBtneZCmpi CPU16Regs:$x, CPU16Regs:$y,
1641 CPU16Regs:$a, immZExt16:$k)>;
1644 // When writing C code to test setxx these patterns,
1645 // some will be transformed into
1646 // other things. So we test using C code but using -O3 and -O0
1651 <(seteq CPU16Regs:$lhs,CPU16Regs:$rhs),
1652 (SltiuCCRxImmX16 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs), 1)>;
1655 <(seteq CPU16Regs:$lhs, 0),
1656 (SltiuCCRxImmX16 CPU16Regs:$lhs, 1)>;
1664 <(setge CPU16Regs:$lhs, CPU16Regs:$rhs),
1665 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1669 // For constants, llvm transforms this to:
1670 // x > (k -1) and then reverses the operands to use setlt. So this pattern
1671 // is not used now by the compiler. (Presumably checking that k-1 does not
1672 // overflow). The compiler never uses this at a the current time, due to
1673 // other optimizations.
1676 // <(setge CPU16Regs:$lhs, immSExt16:$rhs),
1677 // (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, immSExt16:$rhs),
1678 // (LiRxImmX16 1))>;
1680 // This catches the x >= -32768 case by transforming it to x > -32769
1683 <(setgt CPU16Regs:$lhs, -32769),
1684 (XorRxRxRy16 (SltiCCRxImmX16 CPU16Regs:$lhs, -32768),
1693 <(setgt CPU16Regs:$lhs, CPU16Regs:$rhs),
1694 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1700 <(setle CPU16Regs:$lhs, CPU16Regs:$rhs),
1701 (XorRxRxRy16 (SltCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImm16 1))>;
1706 def: SetCC_R16<setlt, SltCCRxRy16>;
1708 def: SetCC_I16<setlt, immSExt16, SltiCCRxImmX16>;
1714 <(setne CPU16Regs:$lhs,CPU16Regs:$rhs),
1715 (SltuCCRxRy16 (LiRxImmX16 0),
1716 (XorRxRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs))>;
1723 <(setuge CPU16Regs:$lhs, CPU16Regs:$rhs),
1724 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$lhs, CPU16Regs:$rhs),
1727 // this pattern will never be used because the compiler will transform
1728 // x >= k to x > (k - 1) and then use SLT
1731 // <(setuge CPU16Regs:$lhs, immZExt16:$rhs),
1732 // (XorRxRxRy16 (SltiuCCRxImmX16 CPU16Regs:$lhs, immZExt16:$rhs),
1733 // (LiRxImmX16 1))>;
1739 <(setugt CPU16Regs:$lhs, CPU16Regs:$rhs),
1740 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs)>;
1746 <(setule CPU16Regs:$lhs, CPU16Regs:$rhs),
1747 (XorRxRxRy16 (SltuCCRxRy16 CPU16Regs:$rhs, CPU16Regs:$lhs), (LiRxImmX16 1))>;
1752 def: SetCC_R16<setult, SltuCCRxRy16>;
1754 def: SetCC_I16<setult, immSExt16, SltiuCCRxImmX16>;
1756 def: Mips16Pat<(add CPU16Regs:$hi, (MipsLo tglobaladdr:$lo)),
1757 (AddiuRxRxImmX16 CPU16Regs:$hi, tglobaladdr:$lo)>;
1761 def : Mips16Pat<(MipsHi tglobaladdr:$in),
1762 (SllX16 (LiRxImmX16 tglobaladdr:$in), 16)>;
1763 def : Mips16Pat<(MipsHi tjumptable:$in),
1764 (SllX16 (LiRxImmX16 tjumptable:$in), 16)>;
1765 def : Mips16Pat<(MipsHi tglobaltlsaddr:$in),
1766 (SllX16 (LiRxImmX16 tglobaltlsaddr:$in), 16)>;
1769 class Wrapper16Pat<SDNode node, Instruction ADDiuOp, RegisterClass RC>:
1770 Mips16Pat<(MipsWrapper RC:$gp, node:$in),
1771 (ADDiuOp RC:$gp, node:$in)>;
1774 def : Wrapper16Pat<tglobaladdr, AddiuRxRxImmX16, CPU16Regs>;
1775 def : Wrapper16Pat<tglobaltlsaddr, AddiuRxRxImmX16, CPU16Regs>;
1777 def : Mips16Pat<(i32 (extloadi8 addr16:$src)),
1778 (LbuRxRyOffMemX16 addr16:$src)>;
1779 def : Mips16Pat<(i32 (extloadi16 addr16:$src)),
1780 (LhuRxRyOffMemX16 addr16:$src)>;