1 ; RUN: opt < %s -reassociate -instcombine -S | not grep sub 2 3 ; Test that we can turn things like X*-(Y*Z) -> X*-1*Y*Z. 4 5 define i32 @test1(i32 %a, i32 %b, i32 %z) { 6 %c = sub i32 0, %z ; <i32> [#uses=1] 7 %d = mul i32 %a, %b ; <i32> [#uses=1] 8 %e = mul i32 %c, %d ; <i32> [#uses=1] 9 %f = mul i32 %e, 12345 ; <i32> [#uses=1] 10 %g = sub i32 0, %f ; <i32> [#uses=1] 11 ret i32 %g 12 } 13 14 define i32 @test2(i32 %a, i32 %b, i32 %z) { 15 %d = mul i32 %z, 40 ; <i32> [#uses=1] 16 %c = sub i32 0, %d ; <i32> [#uses=1] 17 %e = mul i32 %a, %c ; <i32> [#uses=1] 18 %f = sub i32 0, %e ; <i32> [#uses=1] 19 ret i32 %f 20 } 21 22
