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AMDGPU/GlobalISel: RegBankSelect for kill

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llvm-svn: 371953
This commit is contained in:
Matt Arsenault 2019-09-16 00:48:37 +00:00
parent 2f721d1bf4
commit e595ef14d8
2 changed files with 72 additions and 0 deletions
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4
lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
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@ -2292,6 +2292,10 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
OpdsMapping[3] = AMDGPU::getValueMapping(AMDGPU::SGPRRegBankID, WaveSize);
break;
}
case Intrinsic::amdgcn_kill: {
OpdsMapping[1] = AMDGPU::getValueMapping(AMDGPU::VCCRegBankID, 1);
break;
}
}
break;
}

68
test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.kill.mir Normal file
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@ -0,0 +1,68 @@
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect -regbankselect-fast -verify-machineinstrs -o - %s| FileCheck %s
# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect -regbankselect-greedy -verify-machineinstrs -o - %s| FileCheck %s
---
name: kill_scc
legalized: true
body: |
bb.0:
liveins: $sgpr0, $sgpr1
; CHECK-LABEL: name: kill_scc
; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr1
; CHECK: [[ICMP:%[0-9]+]]:scc(s1) = G_ICMP intpred(eq), [[COPY]](s32), [[COPY1]]
; CHECK: [[COPY2:%[0-9]+]]:vcc(s1) = COPY [[ICMP]](s1)
; CHECK: G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), [[COPY2]](s1)
%0:_(s32) = COPY $sgpr0
%1:_(s32) = COPY $sgpr1
%2:_(s1) = G_ICMP intpred(eq), %0, %1
G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), %2
...
---
name: kill_vcc
legalized: true
body: |
bb.0:
liveins: $vgpr0, $vgpr1
; CHECK-LABEL: name: kill_vcc
; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr1
; CHECK: [[ICMP:%[0-9]+]]:vcc(s1) = G_ICMP intpred(eq), [[COPY]](s32), [[COPY1]]
; CHECK: G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), [[ICMP]](s1)
%0:_(s32) = COPY $vgpr0
%1:_(s32) = COPY $vgpr1
%2:_(s1) = G_ICMP intpred(eq), %0, %1
G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), %2
...
---
name: kill_constant_true
legalized: true
body: |
bb.0:
; CHECK-LABEL: name: kill_constant_true
; CHECK: [[C:%[0-9]+]]:sgpr(s1) = G_CONSTANT i1 true
; CHECK: [[COPY:%[0-9]+]]:vcc(s1) = COPY [[C]](s1)
; CHECK: G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), [[COPY]](s1)
%0:_(s1) = G_CONSTANT i1 true
G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), %0
...
---
name: kill_constant_false
legalized: true
body: |
bb.0:
; CHECK-LABEL: name: kill_constant_false
; CHECK: [[C:%[0-9]+]]:sgpr(s1) = G_CONSTANT i1 false
; CHECK: [[COPY:%[0-9]+]]:vcc(s1) = COPY [[C]](s1)
; CHECK: G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), [[COPY]](s1)
%0:_(s1) = G_CONSTANT i1 false
G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.amdgcn.kill), %0
...