1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -instsimplify -S | FileCheck %s
3
4@zeroinit = constant {} zeroinitializer
5@undef = constant {} undef
6
7define i32 @crash_on_zeroinit() {
8; CHECK-LABEL: @crash_on_zeroinit(
9; CHECK-NEXT:    ret i32 0
10;
11  %load = load i32, i32* bitcast ({}* @zeroinit to i32*)
12  ret i32 %load
13}
14
15define i32 @crash_on_undef() {
16; CHECK-LABEL: @crash_on_undef(
17; CHECK-NEXT:    ret i32 undef
18;
19  %load = load i32, i32* bitcast ({}* @undef to i32*)
20  ret i32 %load
21}
22
23@GV = private constant [8 x i32] [i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49]
24
25define <8 x i32> @partial_load() {
26; CHECK-LABEL: @partial_load(
27; CHECK-NEXT:    ret <8 x i32> <i32 0, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48>
28;
29  %load = load <8 x i32>, <8 x i32>* bitcast (i32* getelementptr ([8 x i32], [8 x i32]* @GV, i64 0, i64 -1) to <8 x i32>*)
30  ret <8 x i32> %load
31}
32
33@constvec = internal constant <3 x float> <float 0xBFDA20BC40000000, float 0xBFE6A09EE0000000, float 0x3FE279A760000000>
34
35; This does an out of bounds load from the global constant
36define <3 x float> @load_vec3() {
37; CHECK-LABEL: @load_vec3(
38; CHECK-NEXT:    ret <3 x float> undef
39;
40  %1 = load <3 x float>, <3 x float>* getelementptr inbounds (<3 x float>, <3 x float>* @constvec, i64 1)
41  ret <3 x float> %1
42}
43