1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
2 ; RUN: opt < %s -globalopt -S | FileCheck %s
4 target datalayout = "p:16:32:64" ; 16-bit pointers with 32-bit ABI alignment and 64-bit preferred alignmentt
6 @a = internal externally_initialized global [3 x [7 x i32*]] zeroinitializer, align 16
9 ; The alignments are correct initially, but they should be updated
10 ; after transforming the global. The stored global pointer array retains
11 ; its original "align 16", so access to element N into the new array
12 ; should be offset by the ABI alignment of N pointers.
13 ; Loaded globals are split into individual pointers and use the
14 ; preferred alignment from the datalayout.
17 ; CHECK: @[[A_1:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global [7 x i32*] zeroinitializer, align 16
18 ; CHECK: @[[A_2_0:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global i32* null, align 8
19 ; CHECK: @[[A_2_1:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global i32* null, align 8
20 ; CHECK: @[[A_2_2:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global i32* null, align 8
21 ; CHECK: @[[A_2_3:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global i32* null, align 8
23 define i32* @reduce_align_0() {
24 ; CHECK-LABEL: @reduce_align_0(
25 ; CHECK-NEXT: [[X:%.*]] = load i32*, i32** @a.2.0, align 8
26 ; CHECK-NEXT: store i32* null, i32** getelementptr inbounds ([7 x i32*], [7 x i32*]* @a.1, i32 0, i64 0), align 16
27 ; CHECK-NEXT: ret i32* [[X]]
29 %x = load i32*, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 2, i64 0), align 8
30 store i32* null, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 1, i64 0), align 4
34 define i32* @reduce_align_1() {
35 ; CHECK-LABEL: @reduce_align_1(
36 ; CHECK-NEXT: [[X:%.*]] = load i32*, i32** @a.2.1, align 8
37 ; CHECK-NEXT: store i32* null, i32** getelementptr inbounds ([7 x i32*], [7 x i32*]* @a.1, i32 0, i64 1), align 4
38 ; CHECK-NEXT: ret i32* [[X]]
40 %x = load i32*, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 2, i64 1), align 4
41 store i32* null, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 1, i64 1), align 16
45 define i32* @reduce_align_2() {
46 ; CHECK-LABEL: @reduce_align_2(
47 ; CHECK-NEXT: [[X:%.*]] = load i32*, i32** @a.2.2, align 8
48 ; CHECK-NEXT: store i32* null, i32** getelementptr inbounds ([7 x i32*], [7 x i32*]* @a.1, i32 0, i64 2), align 8
49 ; CHECK-NEXT: ret i32* [[X]]
51 %x = load i32*, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 2, i64 2), align 16
52 store i32* null, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 1, i64 2), align 4
56 define i32* @reduce_align_3() {
57 ; CHECK-LABEL: @reduce_align_3(
58 ; CHECK-NEXT: [[X:%.*]] = load i32*, i32** @a.2.3, align 8
59 ; CHECK-NEXT: store i32* null, i32** getelementptr inbounds ([7 x i32*], [7 x i32*]* @a.1, i32 0, i64 3), align 4
60 ; CHECK-NEXT: ret i32* [[X]]
62 %x = load i32*, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 2, i64 3), align 4
63 store i32* null, i32** getelementptr inbounds ([3 x [7 x i32*]], [3 x [7 x i32*]]* @a, i64 0, i64 1, i64 3), align 8