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AMDGPU/GlobalISel: Expand G_BITCAST legality 

llvm-svn: 373567
This commit is contained in:
Matt Arsenault 2019-10-03 05:46:08 +00:00
parent eb420aa379
commit 1c135a39aa
2 changed files with 103 additions and 4 deletions
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5
llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
View File

@ -279,11 +279,8 @@ AMDGPULegalizerInfo::AMDGPULegalizerInfo(const GCNSubtarget &ST_,
.scalarize(0); // TODO: Implement.
getActionDefinitionsBuilder(G_BITCAST)
.legalForCartesianProduct({S32, V2S16})
.legalForCartesianProduct({S64, V2S32, V4S16})
.legalForCartesianProduct({V2S64, V4S32})
// Don't worry about the size constraint.
.legalIf(all(isPointer(0), isPointer(1)))
.legalIf(all(isRegisterType(0), isRegisterType(1)))
// FIXME: Testing hack
.legalForCartesianProduct({S16, LLT::vector(2, 8), });

102
llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-bitcast.mir
View File

@ -121,6 +121,36 @@ body: |
$vgpr0_vgpr1 = COPY %1
...
---
name: test_bitcast_v2s64_to_v8s16
body: |
bb.0:
liveins: $vgpr0_vgpr1_vgpr2_vgpr3
; CHECK-LABEL: name: test_bitcast_v2s64_to_v8s16
; CHECK: [[COPY:%[0-9]+]]:_(<2 x s64>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3
; CHECK: [[BITCAST:%[0-9]+]]:_(<8 x s16>) = G_BITCAST [[COPY]](<2 x s64>)
; CHECK: $vgpr0_vgpr1_vgpr2_vgpr3 = COPY [[BITCAST]](<8 x s16>)
%0:_(<2 x s64>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3
%1:_(<8 x s16>) = G_BITCAST %0
$vgpr0_vgpr1_vgpr2_vgpr3 = COPY %1
...
---
name: test_bitcast_v8s16_to_v2s64
body: |
bb.0:
liveins: $vgpr0_vgpr1_vgpr2_vgpr3
; CHECK-LABEL: name: test_bitcast_v8s16_to_v2s64
; CHECK: [[COPY:%[0-9]+]]:_(<8 x s16>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3
; CHECK: [[BITCAST:%[0-9]+]]:_(<2 x s64>) = G_BITCAST [[COPY]](<8 x s16>)
; CHECK: $vgpr0_vgpr1_vgpr2_vgpr3 = COPY [[BITCAST]](<2 x s64>)
%0:_(<8 x s16>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3
%1:_(<2 x s64>) = G_BITCAST %0
$vgpr0_vgpr1_vgpr2_vgpr3 = COPY %1
...
---
name: test_bitcast_p0_to_p1
body: |
@ -180,3 +210,75 @@ body: |
%1:_(p999) = G_BITCAST %0
$vgpr0_vgpr1 = COPY %1
...
---
name: test_bitcast_v4s64_to_v8s32
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
; CHECK-LABEL: name: test_bitcast_v4s64_to_v8s32
; CHECK: liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
; CHECK: [[COPY:%[0-9]+]]:_(<4 x s64>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
; CHECK: [[BITCAST:%[0-9]+]]:_(<8 x s32>) = G_BITCAST [[COPY]](<4 x s64>)
; CHECK: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7 = COPY [[BITCAST]](<8 x s32>)
%0:_(<4 x s64>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
%1:_(<8 x s32>) = G_BITCAST %0
$vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7 = COPY %1
...
---
name: test_bitcast_v8s32_to_v4s64
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
; CHECK-LABEL: name: test_bitcast_v8s32_to_v4s64
; CHECK: liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
; CHECK: [[COPY:%[0-9]+]]:_(<8 x s32>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
; CHECK: [[BITCAST:%[0-9]+]]:_(<4 x s64>) = G_BITCAST [[COPY]](<8 x s32>)
; CHECK: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7 = COPY [[BITCAST]](<4 x s64>)
%0:_(<8 x s32>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
%1:_(<4 x s64>) = G_BITCAST %0
$vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7 = COPY %1
...
---
name: test_bitcast_v8s64_to_v16s32
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
; CHECK-LABEL: name: test_bitcast_v8s64_to_v16s32
; CHECK: liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
; CHECK: [[COPY:%[0-9]+]]:_(<8 x s64>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
; CHECK: [[BITCAST:%[0-9]+]]:_(<16 x s32>) = G_BITCAST [[COPY]](<8 x s64>)
; CHECK: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15 = COPY [[BITCAST]](<16 x s32>)
%0:_(<8 x s64>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
%1:_(<16 x s32>) = G_BITCAST %0
$vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15 = COPY %1
...
---
name: test_bitcast_v16s32_to_v8s64
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
; CHECK-LABEL: name: test_bitcast_v16s32_to_v8s64
; CHECK: liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
; CHECK: [[COPY:%[0-9]+]]:_(<16 x s32>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
; CHECK: [[BITCAST:%[0-9]+]]:_(<8 x s64>) = G_BITCAST [[COPY]](<16 x s32>)
; CHECK: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15 = COPY [[BITCAST]](<8 x s64>)
%0:_(<16 x s32>) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
%1:_(<8 x s64>) = G_BITCAST %0
$vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15 = COPY %1
...