1 ; RUN: opt < %s -instcombine -S | grep " sub " | count 1
4 define i32 @l(i32 %a, i32 %b, i32 %c, i32 %d) {
6 %b.neg = sub i32 0, %b ; <i32> [#uses=1]
7 %c.neg = sub i32 0, %c ; <i32> [#uses=1]
8 %sub4 = add i32 %c.neg, %b.neg ; <i32> [#uses=1]
9 %sub6 = add i32 %sub4, %d ; <i32> [#uses=1]