eb7c947272
The same literal can be used multiple times in an instruction, not just once. We were not tracking the used value to verify this, so correct this. This helps avoid regressions in a future patch.
67 lines
2.8 KiB
YAML
67 lines
2.8 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
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# RUN: llc -mtriple=amdgcn -mcpu=gfx1030 -run-pass=si-fold-operands -o - %s | FileCheck %s
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# The same literal may be used multiple times in different operands,
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# as long as it is the same value.
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---
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name: fold_multiple_same_literal_use_0
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0
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; CHECK-LABEL: name: fold_multiple_same_literal_use_0
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; CHECK: liveins: $vgpr0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
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; CHECK-NEXT: [[V_DIV_SCALE_F32_e64_:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_1:%[0-9]+]]:sreg_32_xm0_xexec = V_DIV_SCALE_F32_e64 0, 1178657792, 0, 1178657792, 0, 1178657792, 0, 0, implicit $mode, implicit $exec
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; CHECK-NEXT: S_ENDPGM 0, implicit [[V_DIV_SCALE_F32_e64_]]
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%0:vgpr_32 = COPY $vgpr0
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%1:sreg_32 = S_MOV_B32 1178657792
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%2:vgpr_32 = COPY %1
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%3:vgpr_32, %4:sreg_32_xm0_xexec = V_DIV_SCALE_F32_e64 0, %2, 0, %2, 0, %2, 0, 0, implicit $mode, implicit $exec
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S_ENDPGM 0, implicit %3
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...
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---
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name: fold_multiple_same_literal_use_1
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0
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; CHECK-LABEL: name: fold_multiple_same_literal_use_1
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; CHECK: liveins: $vgpr0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
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; CHECK-NEXT: [[V_DIV_SCALE_F32_e64_:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_1:%[0-9]+]]:sreg_32_xm0_xexec = V_DIV_SCALE_F32_e64 0, 1178657792, 0, 1178657792, 0, 1178657792, 0, 0, implicit $mode, implicit $exec
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; CHECK-NEXT: S_ENDPGM 0, implicit [[V_DIV_SCALE_F32_e64_]]
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%0:vgpr_32 = COPY $vgpr0
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%1:sreg_32 = S_MOV_B32 1178657792
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%2:vgpr_32 = COPY %1
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%3:vgpr_32, %4:sreg_32_xm0_xexec = V_DIV_SCALE_F32_e64 0, 1178657792, 0, 1178657792, 0, %2, 0, 0, implicit $mode, implicit $exec
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S_ENDPGM 0, implicit %3
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...
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---
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name: no_fold_multiple_same_literal_different_value
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $vgpr0
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; CHECK-LABEL: name: no_fold_multiple_same_literal_different_value
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; CHECK: liveins: $vgpr0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
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; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 1178657793, implicit $exec
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; CHECK-NEXT: [[V_DIV_SCALE_F32_e64_:%[0-9]+]]:vgpr_32, [[V_DIV_SCALE_F32_e64_1:%[0-9]+]]:sreg_32_xm0_xexec = V_DIV_SCALE_F32_e64 0, 1178657792, 0, 1178657792, 0, [[V_MOV_B32_e32_]], 0, 0, implicit $mode, implicit $exec
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; CHECK-NEXT: S_ENDPGM 0, implicit [[V_DIV_SCALE_F32_e64_]]
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%0:vgpr_32 = COPY $vgpr0
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%1:sreg_32 = S_MOV_B32 1178657793
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%2:vgpr_32 = COPY %1
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%3:vgpr_32, %4:sreg_32_xm0_xexec = V_DIV_SCALE_F32_e64 0, 1178657792, 0, 1178657792, 0, %2, 0, 0, implicit $mode, implicit $exec
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S_ENDPGM 0, implicit %3
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...
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