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95a43d873a
The code missed to check implicit operands of COPY instructions for defs/uses. Differential Revision: https://reviews.llvm.org/D29522 llvm-svn: 294088
23 lines
821 B
YAML
23 lines
821 B
YAML
# RUN: llc -o - %s -mtriple=armv7s-- -run-pass=machine-cp | FileCheck %s
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---
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# Test that machine copy prop recognizes the implicit-def operands on a COPY
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# as clobbering the register.
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# CHECK-LABEL: name: func
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# CHECK: %d2 = VMOVv2i32 2, 14, _
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# CHECK: %s5 = COPY %s0, implicit %q1, implicit-def %q1
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# CHECK: VST1q32 %r0, 0, %q1, 14, _
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# The following two COPYs must not be removed
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# CHECK: %s4 = COPY %s20, implicit-def %q1
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# CHECK: %s5 = COPY %s0, implicit killed %d0, implicit %q1, implicit-def %q1
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# CHECK: VST1q32 %r2, 0, %q1, 14, _
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name: func
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body: |
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bb.0:
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%d2 = VMOVv2i32 2, 14, _
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%s5 = COPY %s0, implicit %q1, implicit-def %q1
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VST1q32 %r0, 0, %q1, 14, _
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%s4 = COPY %s20, implicit-def %q1
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%s5 = COPY %s0, implicit killed %d0, implicit %q1, implicit-def %q1
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VST1q32 %r2, 0, %q1, 14, _
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...
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