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; With sub reassociation, constant folding can eliminate all of the constants.
;
; RUN: llvm-as < %s | opt -reassociate -constprop -instcombine -dce | llvm-dis | not grep add
int %test(int %A, int %B) {
%W = add int 5, %B
%X = add int -7, %A
%Y = sub int %X, %W
%Z = add int %Y, 12
ret int %Z
}
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