29 lines
564 B
Plaintext
29 lines
564 B
Plaintext
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# RUN: llc -o - %s -mtriple=i686-- -run-pass branch-folder | FileCheck %s
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# Test that tail merging drops undef flags that aren't present on all
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# instructions to be merged.
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--- |
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define void @func() { ret void }
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...
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---
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# CHECK-LABEL: name: func
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# CHECK: bb.1:
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# CHECK: $eax = MOV32ri 2
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# CHECK-NOT: RET
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# CHECK: bb.2:
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# CHECK-NOT: RET 0, undef $eax
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# CHECK: RET 0, $eax
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name: func
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tracksRegLiveness: true
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body: |
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bb.0:
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JCC_1 %bb.1, 4, implicit undef $eflags
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JMP_1 %bb.2
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bb.1:
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$eax = MOV32ri 2
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RET 0, $eax
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bb.2:
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RET 0, undef $eax
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...
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