1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
define i32 @negated_operand(i32 %x) {
; CHECK-LABEL: @negated_operand(
; CHECK-NEXT: ret i32 0
;
%negx = sub i32 0, %x
%rem = srem i32 %negx, %x
ret i32 %rem
}
define <2 x i32> @negated_operand_commute_vec(<2 x i32> %x) {
; CHECK-LABEL: @negated_operand_commute_vec(
; CHECK-NEXT: ret <2 x i32> zeroinitializer
;
%negx = sub <2 x i32> zeroinitializer, %x
%rem = srem <2 x i32> %negx, %x
ret <2 x i32> %rem
}
define i32 @knownnegation(i32 %x, i32 %y) {
; CHECK-LABEL: @knownnegation(
; CHECK-NEXT: ret i32 0
;
%xy = sub i32 %x, %y
%yx = sub i32 %y, %x
%rem = srem i32 %xy, %yx
ret i32 %rem
}
define <2 x i32> @knownnegation_commute_vec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @knownnegation_commute_vec(
; CHECK-NEXT: ret <2 x i32> zeroinitializer
;
%xy = sub <2 x i32> %x, %y
%yx = sub <2 x i32> %y, %x
%rem = srem <2 x i32> %xy, %yx
ret <2 x i32> %rem
}
define <3 x i32> @negated_operand_vec_poison(<3 x i32> %x) {
; CHECK-LABEL: @negated_operand_vec_poison(
; CHECK-NEXT: ret <3 x i32> zeroinitializer
;
%negx = sub <3 x i32> <i32 0, i32 poison, i32 0>, %x
%rem = srem <3 x i32> %negx, %x
ret <3 x i32> %rem
}
define <2 x i32> @negated_operand_vec_nonsplat(<2 x i32> %x) {
; CHECK-LABEL: @negated_operand_vec_nonsplat(
; CHECK-NEXT: [[NEGX:%.*]] = sub <2 x i32> <i32 0, i32 1>, [[X:%.*]]
; CHECK-NEXT: [[REM:%.*]] = srem <2 x i32> [[NEGX]], [[X]]
; CHECK-NEXT: ret <2 x i32> [[REM]]
;
%negx = sub <2 x i32> <i32 0, i32 1>, %x ; not 0, don't fold
%rem = srem <2 x i32> %negx, %x
ret <2 x i32> %rem
}
define i32 @negated_operand_commute(i32 %x) {
; CHECK-LABEL: @negated_operand_commute(
; CHECK-NEXT: ret i32 0
;
%negx = sub i32 0, %x
%rem = srem i32 %x, %negx
ret i32 %rem
}
|
