xref: /llvm-project/llvm/test/Transforms/InstCombine/cast-set.ll (revision 2caaec65c04ea7d0e9568b7895b7a46d6100cb75)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -passes=instcombine -S | FileCheck %s
3
4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
5
6define i1 @test1(i32 %X) {
7; CHECK-LABEL: @test1(
8; CHECK-NEXT:    [[C:%.*]] = icmp ne i32 [[X:%.*]], 12
9; CHECK-NEXT:    ret i1 [[C]]
10;
11  %A = bitcast i32 %X to i32
12  ; Convert to setne int %X, 12
13  %c = icmp ne i32 %A, 12
14  ret i1 %c
15}
16
17define i1 @test2(i32 %X, i32 %Y) {
18; CHECK-LABEL: @test2(
19; CHECK-NEXT:    [[C:%.*]] = icmp ne i32 [[X:%.*]], [[Y:%.*]]
20; CHECK-NEXT:    ret i1 [[C]]
21;
22  %A = bitcast i32 %X to i32
23  %B = bitcast i32 %Y to i32
24  ; Convert to setne int %X, %Y
25  %c = icmp ne i32 %A, %B
26  ret i1 %c
27}
28
29define i32 @test4(i32 %A) {
30; CHECK-LABEL: @test4(
31; CHECK-NEXT:    [[C:%.*]] = shl i32 [[A:%.*]], 2
32; CHECK-NEXT:    ret i32 [[C]]
33;
34  %B = bitcast i32 %A to i32
35  %C = shl i32 %B, 2
36  %D = bitcast i32 %C to i32
37  ret i32 %D
38}
39
40define i16 @test5(i16 %A) {
41; CHECK-LABEL: @test5(
42; CHECK-NEXT:    [[TMP1:%.*]] = and i16 [[A:%.*]], 15
43; CHECK-NEXT:    ret i16 [[TMP1]]
44;
45  %B = sext i16 %A to i32
46  %C = and i32 %B, 15
47  %D = trunc i32 %C to i16
48  ret i16 %D
49}
50
51define i1 @test6(i1 %A) {
52; CHECK-LABEL: @test6(
53; CHECK-NEXT:    ret i1 [[A:%.*]]
54;
55  %B = zext i1 %A to i32
56  %C = icmp ne i32 %B, 0
57  ret i1 %C
58}
59
60define i1 @test6a(i1 %A) {
61; CHECK-LABEL: @test6a(
62; CHECK-NEXT:    ret i1 true
63;
64  %B = zext i1 %A to i32
65  %C = icmp ne i32 %B, -1
66  ret i1 %C
67}
68
69define i1 @test7(ptr %A) {
70; CHECK-LABEL: @test7(
71; CHECK-NEXT:    [[C:%.*]] = icmp eq ptr [[A:%.*]], null
72; CHECK-NEXT:    ret i1 [[C]]
73;
74  %C = icmp eq ptr %A, null
75  ret i1 %C
76}
77