1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -reassociate -instcombine -S | FileCheck %s
3
4; Test that we can turn things like X*-(Y*Z) -> X*-1*Y*Z.
5
6define i32 @test1(i32 %a, i32 %b, i32 %z) {
7; CHECK-LABEL: @test1(
8; CHECK-NEXT:    [[E:%.*]] = mul i32 [[A:%.*]], 12345
9; CHECK-NEXT:    [[F:%.*]] = mul i32 [[E]], [[B:%.*]]
10; CHECK-NEXT:    [[G:%.*]] = mul i32 [[F]], [[Z:%.*]]
11; CHECK-NEXT:    ret i32 [[G]]
12;
13  %c = sub i32 0, %z
14  %d = mul i32 %a, %b
15  %e = mul i32 %c, %d
16  %f = mul i32 %e, 12345
17  %g = sub i32 0, %f
18  ret i32 %g
19}
20
21define i32 @test2(i32 %a, i32 %b, i32 %z) {
22; CHECK-LABEL: @test2(
23; CHECK-NEXT:    [[E:%.*]] = mul i32 [[A:%.*]], 40
24; CHECK-NEXT:    [[F:%.*]] = mul i32 [[E]], [[Z:%.*]]
25; CHECK-NEXT:    ret i32 [[F]]
26;
27  %d = mul i32 %z, 40
28  %c = sub i32 0, %d
29  %e = mul i32 %a, %c
30  %f = sub i32 0, %e
31  ret i32 %f
32}
33
34define <2 x i32> @negate_vec_undefs(<2 x i32> %a, <2 x i32> %b, <2 x i32> %z) {
35; CHECK-LABEL: @negate_vec_undefs(
36; CHECK-NEXT:    [[E:%.*]] = mul <2 x i32> [[A:%.*]], <i32 40, i32 40>
37; CHECK-NEXT:    [[F:%.*]] = mul <2 x i32> [[E]], [[Z:%.*]]
38; CHECK-NEXT:    ret <2 x i32> [[F]]
39;
40  %d = mul <2 x i32> %z, <i32 40, i32 40>
41  %c = sub <2 x i32> <i32 0, i32 undef>, %d
42  %e = mul <2 x i32> %a, %c
43  %f = sub <2 x i32> <i32 0, i32 undef>, %e
44  ret <2 x i32> %f
45}
46
47