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New testcase for bug never checked into CVS, but that I hit during debugging a
new feature git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4039 91177308-0d34-0410-b5e6-96231b3b80d8
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35
test/Transforms/CorrelatedExprs/2002-10-04-ForwardingBug.ll
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35
test/Transforms/CorrelatedExprs/2002-10-04-ForwardingBug.ll
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; Testcase distilled from bisort where we tried to perform branch target
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; forwarding where it was not safe.
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; RUN: as < %s | opt -cee
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;
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%HANDLE = type { int, %HANDLE*, %HANDLE* }
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%struct.node = type { int, %HANDLE*, %HANDLE* }
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%.LC0 = internal global [11 x sbyte] c"%d @ 0x%x\0A\00" ; <[11 x sbyte]*> [#uses=1]
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implementation ; Functions:
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void %InOrder(%HANDLE* %h) {
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bb0: ; No predecessors!
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br label %bb2
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bb2: ; preds = %bb3, %bb0
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%reg113 = phi %HANDLE* [ %reg109, %bb3 ], [ %h, %bb0 ] ; <%HANDLE*> [#uses=4]
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%cond217 = seteq %HANDLE* %reg113, null ; <bool> [#uses=1]
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br bool %cond217, label %bb4, label %bb3
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bb3: ; preds = %bb2
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%reg221 = getelementptr %HANDLE* %reg113, long 0, ubyte 1 ; <%HANDLE**> [#uses=1]
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%reg108 = load %HANDLE** %reg221 ; <%HANDLE*> [#uses=1]
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%reg226 = getelementptr %HANDLE* %reg113, long 0, ubyte 2 ; <%HANDLE**> [#uses=1]
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%reg109 = load %HANDLE** %reg226 ; <%HANDLE*> [#uses=1]
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call void %InOrder( %HANDLE* %reg108 )
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%cast231 = getelementptr %HANDLE* %reg113, long 0, ubyte 0 ; <int*> [#uses=1]
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%reg111 = load int* %cast231 ; <int> [#uses=1]
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%reg233 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([11 x sbyte]* %.LC0, long 0, long 0), int %reg111, uint 0 ) ; <int> [#uses=0]
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br label %bb2
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bb4: ; preds = %bb2
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ret void
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}
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declare int %printf(sbyte*, ...)
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