llvm/test/Transforms/Reassociate/2002-05-15-SubReassociate2.ll

; With sub reassociation, constant folding can eliminate the two 12 constants.
;
; RUN: as < %s | opt -reassociate -constprop -dce | dis | not grep 12

int "test"(int %A, int %B, int %C, int %D) {
	%M = add int %A, 12
	%N = add int %M, %B
	%O = add int %N, %C
	%P = sub int %D, %O
	%Q = add int %P, 12
	ret int %Q
}