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281351cb07
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281694 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
1.2 KiB
LLVM
37 lines
1.2 KiB
LLVM
; RUN: opt -S -simplifycfg < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare i32* @fn1(i32* returned)
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define i32 @test1(i1 %B) {
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entry:
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br label %for.cond.us
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for.cond.us: ; preds = %for.cond.us, %entry
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br i1 %B, label %for.cond4.preheader, label %for.cond.us
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for.cond4.preheader: ; preds = %for.cond.us
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br i1 %B, label %for.cond4.preheader.split.us, label %for.cond4
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for.cond4.preheader.split.us: ; preds = %for.cond4.preheader
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unreachable
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for.cond4: ; preds = %for.end, %for.cond4.preheader
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%phi = phi i32* [ %call, %for.end ], [ undef, %for.cond4.preheader ]
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%call = call i32* @fn1(i32* %phi)
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br label %for.cond5
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for.cond5: ; preds = %for.cond5, %for.cond4
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br i1 %B, label %for.cond5, label %for.end
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for.end: ; preds = %for.cond5
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%load = load i32, i32* %call, align 4
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br label %for.cond4
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}
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; CHECK-LABEL: define i32 @test1(
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; CHECK: br label %[[LABEL:.*]]
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; CHECK: [[LABEL]]:
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; CHECK: br label %[[LABEL]]
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