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Add a test for PR4413, which was apparently fixed at some point in the past. 

llvm-svn: 112987
This commit is contained in:
Owen Anderson 2010-09-03 18:33:08 +00:00
parent 21a2a2579f
commit 064cb4c807
1 changed files with 21 additions and 0 deletions
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21
llvm/test/Transforms/InstCombine/phi.ll
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@ -402,3 +402,24 @@ if.else: ; preds = %entry
store i32 %tmp5, i32* %res
br label %if.end
}
; PR4413
declare i32 @ext()
; CHECK: @test17
define i32 @test17(i1 %a) {
entry:
br i1 %a, label %bb1, label %bb2
bb1: ; preds = %entry
%0 = tail call i32 @ext() ; <i32> [#uses=1]
br label %bb2
bb2: ; preds = %bb1, %entry
%cond = phi i1 [ true, %bb1 ], [ false, %entry ] ; <i1> [#uses=1]
; CHECK-NOT: %val = phi i32 [ %0, %bb1 ], [ 0, %entry ]
%val = phi i32 [ %0, %bb1 ], [ 0, %entry ] ; <i32> [#uses=1]
%res = select i1 %cond, i32 %val, i32 0 ; <i32> [#uses=1]
; CHECK: ret i32 %cond
ret i32 %res
}