1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -instsimplify -S | FileCheck %s
3
4define i32 @common_sub_operand(i32 %X, i32 %Y) {
5; CHECK-LABEL: @common_sub_operand(
6; CHECK-NEXT:    ret i32 [[X:%.*]]
7;
8  %Z = sub i32 %X, %Y
9  %Q = add i32 %Z, %Y
10  ret i32 %Q
11}
12
13define i32 @negated_operand(i32 %x) {
14; CHECK-LABEL: @negated_operand(
15; CHECK-NEXT:    ret i32 0
16;
17  %negx = sub i32 0, %x
18  %r = add i32 %negx, %x
19  ret i32 %r
20}
21
22define <2 x i32> @negated_operand_commute_vec(<2 x i32> %x) {
23; CHECK-LABEL: @negated_operand_commute_vec(
24; CHECK-NEXT:    ret <2 x i32> zeroinitializer
25;
26  %negx = sub <2 x i32> zeroinitializer, %x
27  %r = add <2 x i32> %x, %negx
28  ret <2 x i32> %r
29}
30
31define i8 @knownnegation(i8 %x, i8 %y) {
32; CHECK-LABEL: @knownnegation(
33; CHECK-NEXT:    ret i8 0
34;
35  %xy = sub i8 %x, %y
36  %yx = sub i8 %y, %x
37  %r = add i8 %xy, %yx
38  ret i8 %r
39}
40
41define <2 x i8> @knownnegation_commute_vec(<2 x i8> %x, <2 x i8> %y) {
42; CHECK-LABEL: @knownnegation_commute_vec(
43; CHECK-NEXT:    ret <2 x i8> zeroinitializer
44;
45  %xy = sub <2 x i8> %x, %y
46  %yx = sub <2 x i8> %y, %x
47  %r = add <2 x i8> %yx, %xy
48  ret <2 x i8> %r
49}
50
51
52