1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -instcombine < %s | FileCheck %s
4 @g = external global i32
6 define i1 @smin(i32 %other) {
8 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[OTHER:%.*]], 0
9 ; CHECK-NEXT: ret i1 [[TEST]]
11 %positive = load i32, i32* @g, !range !{i32 1, i32 2048}
12 %cmp = icmp slt i32 %positive, %other
13 %sel = select i1 %cmp, i32 %positive, i32 %other
14 %test = icmp sgt i32 %sel, 0
18 ; Range metadata doesn't work for vectors, so find another way to trigger isKnownPositive().
20 define <2 x i1> @smin_vec(<2 x i32> %x, <2 x i32> %other) {
21 ; CHECK-LABEL: @smin_vec(
22 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[OTHER:%.*]], zeroinitializer
23 ; CHECK-NEXT: ret <2 x i1> [[TEST]]
25 %notneg = and <2 x i32> %x, <i32 7, i32 7>
26 %positive = or <2 x i32> %notneg, <i32 1, i32 1>
27 %cmp = icmp slt <2 x i32> %positive, %other
28 %sel = select <2 x i1> %cmp, <2 x i32> %positive, <2 x i32> %other
29 %test = icmp sgt <2 x i32> %sel, zeroinitializer
33 define i1 @smin_commute(i32 %other) {
34 ; CHECK-LABEL: @smin_commute(
35 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[OTHER:%.*]], 0
36 ; CHECK-NEXT: ret i1 [[TEST]]
38 %positive = load i32, i32* @g, !range !{i32 1, i32 2048}
39 %cmp = icmp slt i32 %other, %positive
40 %sel = select i1 %cmp, i32 %other, i32 %positive
41 %test = icmp sgt i32 %sel, 0
45 define <2 x i1> @smin_commute_vec(<2 x i32> %x, <2 x i32> %other) {
46 ; CHECK-LABEL: @smin_commute_vec(
47 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[OTHER:%.*]], zeroinitializer
48 ; CHECK-NEXT: ret <2 x i1> [[TEST]]
50 %notneg = and <2 x i32> %x, <i32 7, i32 7>
51 %positive = or <2 x i32> %notneg, <i32 1, i32 1>
52 %cmp = icmp slt <2 x i32> %other, %positive
53 %sel = select <2 x i1> %cmp, <2 x i32> %other, <2 x i32> %positive
54 %test = icmp sgt <2 x i32> %sel, zeroinitializer
58 define <2 x i1> @smin_commute_vec_undef_elts(<2 x i32> %x, <2 x i32> %other) {
59 ; CHECK-LABEL: @smin_commute_vec_undef_elts(
60 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[OTHER:%.*]], <i32 0, i32 undef>
61 ; CHECK-NEXT: ret <2 x i1> [[TEST]]
63 %notneg = and <2 x i32> %x, <i32 7, i32 7>
64 %positive = or <2 x i32> %notneg, <i32 1, i32 1>
65 %cmp = icmp slt <2 x i32> %other, %positive
66 %sel = select <2 x i1> %cmp, <2 x i32> %other, <2 x i32> %positive
67 %test = icmp sgt <2 x i32> %sel, <i32 0, i32 undef>
70 ; %positive might be zero
72 define i1 @maybe_not_positive(i32 %other) {
73 ; CHECK-LABEL: @maybe_not_positive(
74 ; CHECK-NEXT: [[POSITIVE:%.*]] = load i32, i32* @g, align 4, !range !0
75 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[POSITIVE]], [[OTHER:%.*]]
76 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[POSITIVE]], i32 [[OTHER]]
77 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[SEL]], 0
78 ; CHECK-NEXT: ret i1 [[TEST]]
80 %positive = load i32, i32* @g, !range !{i32 0, i32 2048}
81 %cmp = icmp slt i32 %positive, %other
82 %sel = select i1 %cmp, i32 %positive, i32 %other
83 %test = icmp sgt i32 %sel, 0
87 define <2 x i1> @maybe_not_positive_vec(<2 x i32> %x, <2 x i32> %other) {
88 ; CHECK-LABEL: @maybe_not_positive_vec(
89 ; CHECK-NEXT: [[NOTNEG:%.*]] = and <2 x i32> [[X:%.*]], <i32 7, i32 7>
90 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i32> [[NOTNEG]], [[OTHER:%.*]]
91 ; CHECK-NEXT: [[SEL:%.*]] = select <2 x i1> [[CMP]], <2 x i32> [[NOTNEG]], <2 x i32> [[OTHER]]
92 ; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[SEL]], zeroinitializer
93 ; CHECK-NEXT: ret <2 x i1> [[TEST]]
95 %notneg = and <2 x i32> %x, <i32 7, i32 7>
96 %cmp = icmp slt <2 x i32> %notneg, %other
97 %sel = select <2 x i1> %cmp, <2 x i32> %notneg, <2 x i32> %other
98 %test = icmp sgt <2 x i32> %sel, zeroinitializer