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23 lines
526 B
LLVM
23 lines
526 B
LLVM
; This test verifies that no optimizations are performed on the @f function
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; when the -opt-bisect-limit=0 option is used. In particular, the X86
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; instruction selector will optimize the cmp instruction to a sub instruction
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; if it is not run in -O0 mode.
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; RUN: llc -O3 -opt-bisect-limit=0 -o - %s | FileCheck %s
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target triple = "x86_64-unknown-linux-gnu"
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define void @f() {
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entry:
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%cmp = icmp slt i32 undef, 8
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br i1 %cmp, label %middle, label %end
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middle:
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br label %end
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end:
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ret void
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}
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; CHECK: cmpl $8, %eax
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