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1159bd4576
This is cheap to implement, means less work for future passes like MachineDCE, and slightly improves the folding in some cases. Differential Revision: https://reviews.llvm.org/D100117
20 lines
769 B
YAML
20 lines
769 B
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -march=amdgcn -mcpu=gfx1030 -run-pass si-fold-operands -verify-machineinstrs -o - %s | FileCheck %s
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---
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name: fold_cndmask
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tracksRegLiveness: true
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registers:
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: fold_cndmask
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; CHECK: [[DEF:%[0-9]+]]:sreg_32_xm0_xexec = IMPLICIT_DEF
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; CHECK: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 0
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; CHECK: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
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%0:sreg_32_xm0_xexec = IMPLICIT_DEF
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%1:sreg_32 = S_MOV_B32 0
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%2:vgpr_32 = COPY %1:sreg_32
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%3:vgpr_32 = V_CNDMASK_B32_e64 0, %1:sreg_32, 0, %2:vgpr_32, %0:sreg_32_xm0_xexec, implicit $exec
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S_ENDPGM 0, implicit %3
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...
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