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llvm-mirror/test/Regression/Transforms/GlobalOpt/phi-select.llx
2006-12-02 04:23:10 +00:00

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; Test that PHI nodes and select instructions do not necessarily make stuff
; non-constant.
; RUN: llvm-upgrade < %s | llvm-as | opt -globalopt | llvm-dis | not grep global
%X = internal global int 4
%Y = internal global int 5
int %test1(bool %C) {
%P = select bool %C, int* %X, int* %Y
%V = load int* %P
ret int %V
}
int %test2(bool %C) {
br bool %C, label %T, label %Cont
T:
br label %Cont
Cont:
%P = phi int* [%X, %0], [%Y, %T]
%V = load int* %P
ret int %V
}