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Imported Upstream version 5.18.0.246

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Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833
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Xamarin Public Jenkins (auto-signing)
2019-01-23 08:21:40 +00:00
parent a7724cd563
commit 279aa8f685
28482 changed files with 3866972 additions and 44 deletions
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66
external/llvm/test/Transforms/SimplifyCFG/branch-phi-thread.ll vendored Normal file
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@ -0,0 +1,66 @@
; RUN: opt < %s -simplifycfg -adce -S | \
; RUN: not grep "call void @f1"
; END.
declare void @f1()
declare void @f2()
declare void @f3()
declare void @f4()
define i32 @test1(i32 %X, i1 %D) {
E:
%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
br i1 %C, label %T, label %F
T: ; preds = %A, %E
br i1 %C, label %B, label %A
A: ; preds = %T
call void @f1( )
br i1 %D, label %T, label %F
B: ; preds = %T
call void @f2( )
ret i32 345
F: ; preds = %A, %E
call void @f3( )
ret i32 123
}
define i32 @test2(i32 %X, i1 %D) {
E:
%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
br i1 %C, label %T, label %F
T: ; preds = %A, %E
%P = phi i1 [ true, %E ], [ %C, %A ] ; <i1> [#uses=1]
br i1 %P, label %B, label %A
A: ; preds = %T
call void @f1( )
br i1 %D, label %T, label %F
B: ; preds = %T
call void @f2( )
ret i32 345
F: ; preds = %A, %E
call void @f3( )
ret i32 123
}
define i32 @test3(i32 %X, i1 %D, i32* %AP, i32* %BP) {
E:
%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
br i1 %C, label %T, label %F
T: ; preds = %A, %E
call void @f3( )
%XX = load i32, i32* %AP ; <i32> [#uses=1]
store i32 %XX, i32* %BP
br i1 %C, label %B, label %A
A: ; preds = %T
call void @f1( )
br i1 %D, label %T, label %F
B: ; preds = %T
call void @f2( )
ret i32 345
F: ; preds = %A, %E
call void @f3( )
ret i32 123
}