aa2009fe78
First step after e113317958,
in these tests, DomTree is valid afterwards, so mark them as such,
so that they don't regress.
In further steps, SimplifyCFG transforms shall taught to preserve DomTree,
in as small steps as possible.
38 lines
719 B
LLVM
38 lines
719 B
LLVM
; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
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declare i32 @f1()
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declare i32 @f2()
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declare void @f3()
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define i32 @test(i1 %cond, i1 %cond2, i1 %cond3) {
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; CHECK: test
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br i1 %cond, label %T1, label %F1
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; CHECK-NOT: T1:
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T1:
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%v1 = call i32 @f1()
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br label %Merge
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F1:
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%v2 = call i32 @f2()
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br label %Merge
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Merge:
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; CHECK: Merge:
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; CHECK: %v1 = call i32 @f1()
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; CHECK-NEXT: %D = and i1 %cond2, %cond3
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; CHECK-NEXT: br i1 %D
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%A = phi i1 [true, %T1], [false, %F1]
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%B = phi i32 [%v1, %T1], [%v2, %F1]
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%C = and i1 %A, %cond2
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%D = and i1 %C, %cond3
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br i1 %D, label %T2, label %F2
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T2:
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call void @f3()
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ret i32 %B
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F2:
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ret i32 %B
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}
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