| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc %s -o - -mtriple=x86_64-unknown-linux -run-pass=twoaddressinstruction -verify-machineinstrs | FileCheck %s |
| |
| # In TwoAddressInstructionPass, new instructions should be added to DistanceMap. |
| # In this case, function convertInstTo3Addr is called on the first ADD |
| # instruction, extra COPY instructions are generated. If they are not added to |
| # DistanceMap, function noUseAfterLastDef computes a wrong value for the later |
| # ADD instruction, and a different commute decision is made. |
| |
| --- | |
| ; ModuleID = 't.ll' |
| source_filename = "t.ll" |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux" |
| |
| declare i16 @llvm.sadd.sat.i16(i16, i16) |
| |
| define signext i16 @func16(i16 signext %x, i16 signext %y, i16 signext %z) nounwind { |
| %a = mul i16 %y, %z |
| %tmp = call i16 @llvm.sadd.sat.i16(i16 %x, i16 %a) |
| ret i16 %tmp |
| } |
| |
| ... |
| --- |
| name: func16 |
| alignment: 16 |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: gr32 } |
| - { id: 1, class: gr32 } |
| - { id: 2, class: gr32 } |
| - { id: 3, class: gr16 } |
| - { id: 4, class: gr32 } |
| - { id: 5, class: gr16 } |
| - { id: 6, class: gr16 } |
| - { id: 7, class: gr32 } |
| - { id: 8, class: gr32 } |
| - { id: 9, class: gr32 } |
| - { id: 10, class: gr16 } |
| - { id: 11, class: gr32 } |
| - { id: 13, class: gr32 } |
| - { id: 14, class: gr16 } |
| frameInfo: |
| maxAlignment: 1 |
| body: | |
| bb.0 : |
| liveins: $edi, $esi, $edx |
| ; CHECK-LABEL: name: func16 |
| ; CHECK: liveins: $edi, $esi, $edx |
| ; CHECK-NEXT: {{ $}} |
| ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY killed $edx |
| ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY killed $esi |
| ; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY killed $edi |
| ; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr16 = COPY killed [[COPY2]].sub_16bit |
| ; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr32 = COPY [[COPY1]] |
| ; CHECK-NEXT: [[IMUL32rr:%[0-9]+]]:gr32 = IMUL32rr [[IMUL32rr]], killed [[COPY]], implicit-def dead $eflags |
| ; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr16 = COPY killed [[IMUL32rr]].sub_16bit |
| ; CHECK-NEXT: [[DEF:%[0-9]+]]:gr64_nosp = IMPLICIT_DEF |
| ; CHECK-NEXT: [[DEF]].sub_16bit:gr64_nosp = COPY [[COPY3]] |
| ; CHECK-NEXT: [[DEF1:%[0-9]+]]:gr64_nosp = IMPLICIT_DEF |
| ; CHECK-NEXT: [[DEF1]].sub_16bit:gr64_nosp = COPY [[COPY4]] |
| ; CHECK-NEXT: [[LEA64_32r:%[0-9]+]]:gr32 = LEA64_32r killed [[DEF]], 1, killed [[DEF1]], 0, $noreg |
| ; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr16 = COPY killed [[LEA64_32r]].sub_16bit |
| ; CHECK-NEXT: [[MOVSX32rr16_:%[0-9]+]]:gr32 = MOVSX32rr16 killed [[COPY5]] |
| ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr32 = COPY [[MOVSX32rr16_]] |
| ; CHECK-NEXT: [[SAR32ri:%[0-9]+]]:gr32 = SAR32ri [[SAR32ri]], 15, implicit-def dead $eflags |
| ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr32 = COPY [[SAR32ri]] |
| ; CHECK-NEXT: [[XOR32ri:%[0-9]+]]:gr32 = XOR32ri [[XOR32ri]], -32768, implicit-def dead $eflags |
| ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr16 = COPY [[COPY3]] |
| ; CHECK-NEXT: [[ADD16rr:%[0-9]+]]:gr16 = ADD16rr [[ADD16rr]], killed [[COPY4]], implicit-def $eflags |
| ; CHECK-NEXT: undef %11.sub_16bit:gr32 = COPY killed [[ADD16rr]] |
| ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr32 = COPY [[XOR32ri]] |
| ; CHECK-NEXT: [[CMOV32rr:%[0-9]+]]:gr32 = CMOV32rr [[CMOV32rr]], killed %11, 1, implicit killed $eflags |
| ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr16 = COPY killed [[CMOV32rr]].sub_16bit |
| ; CHECK-NEXT: $ax = COPY killed [[COPY6]] |
| ; CHECK-NEXT: RET 0, killed $ax |
| %2:gr32 = COPY killed $edx |
| %1:gr32 = COPY killed $esi |
| %0:gr32 = COPY killed $edi |
| %3:gr16 = COPY killed %0.sub_16bit:gr32 |
| %4:gr32 = IMUL32rr killed %1:gr32, killed %2:gr32, implicit-def dead $eflags |
| %5:gr16 = COPY killed %4.sub_16bit:gr32 |
| %6:gr16 = ADD16rr %3:gr16, %5:gr16, implicit-def dead $eflags |
| %7:gr32 = MOVSX32rr16 killed %6:gr16 |
| %8:gr32 = SAR32ri killed %7:gr32, 15, implicit-def dead $eflags |
| %9:gr32 = XOR32ri killed %8:gr32, -32768, implicit-def dead $eflags |
| %10:gr16 = ADD16rr killed %3:gr16, killed %5:gr16, implicit-def $eflags |
| %11:gr32 = INSERT_SUBREG undef %12:gr32, killed %10:gr16, %subreg.sub_16bit |
| %13:gr32 = CMOV32rr killed %11:gr32, killed %9:gr32, 0, implicit killed $eflags |
| %14:gr16 = COPY killed %13.sub_16bit:gr32 |
| $ax = COPY killed %14:gr16 |
| RET 0, killed $ax |
| |
| ... |