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
| ; RUN: opt < %s -instcombine -S | FileCheck %s
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
| target triple = "i386-apple-macosx10.0.0"
|
| ; Instcombine should be able to do trivial CSE of loads.
|
| define i32 @test1(i32* %p) {
| %t0 = getelementptr i32, i32* %p, i32 1
| %y = load i32, i32* %t0
| %t1 = getelementptr i32, i32* %p, i32 1
| %x = load i32, i32* %t1
| %a = sub i32 %y, %x
| ret i32 %a
| ; CHECK-LABEL: @test1(
| ; CHECK: ret i32 0
| }
|
|
| ; PR7429
| @.str = private constant [4 x i8] c"XYZ\00"
| define float @test2() {
| %tmp = load float, float* bitcast ([4 x i8]* @.str to float*), align 1
| ret float %tmp
|
| ; CHECK-LABEL: @test2(
| ; CHECK: ret float 0x3806965600000000
| }
|
| @rslts32 = global [36 x i32] zeroinitializer, align 4
|
| @expect32 = internal constant [36 x i32][ i32 1, i32 2, i32 0, i32 100, i32 3,
| i32 4, i32 0, i32 -7, i32 4, i32 4, i32 8, i32 8, i32 1, i32 3, i32 8, i32 3,
| i32 4, i32 -2, i32 2, i32 8, i32 83, i32 77, i32 8, i32 17, i32 77, i32 88, i32
| 22, i32 33, i32 44, i32 88, i32 77, i32 4, i32 4, i32 7, i32 -7, i32 -8] ,
| align 4
|
| ; PR14986
| define void @test3() nounwind {
| ; This is a weird way of computing zero.
| %l = load i32, i32* getelementptr ([36 x i32], [36 x i32]* @expect32, i32 29826161, i32 28), align 4
| store i32 %l, i32* getelementptr ([36 x i32], [36 x i32]* @rslts32, i32 29826161, i32 28), align 4
| ret void
|
| ; CHECK-LABEL: @test3(
| ; CHECK: store i32 1, i32* getelementptr inbounds ([36 x i32], [36 x i32]* @rslts32, i32 0, i32 0)
| }
|
|
