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llvm-mirror/test/Regression/Transforms/InstCombine/2002-12-05-MissedConstProp.ll

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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep add
int %test(int %A) {
%A.neg = sub int 0, %A
%.neg = sub int 0, 1
%X = add int %.neg, 1
%Y.neg.ra = add int %A, %X
%r = add int %A.neg, %Y.neg.ra
ret int %r
}