forked from OSchip/llvm-project
38 lines
675 B
LLVM
38 lines
675 B
LLVM
; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg -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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