; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals ; RUN: opt < %s -passes=globalopt -S | FileCheck %s target datalayout = "p:16:32:64" ; 16-bit pointers with 32-bit ABI alignment and 64-bit preferred alignmentt @a = internal externally_initialized global [3 x [7 x ptr]] zeroinitializer, align 16 ; PR50253 ; The alignments are correct initially, but they should be updated ; after transforming the global. The stored global pointer array retains ; its original "align 16", so access to element N into the new array ; should be offset by the ABI alignment of N pointers. ; Loaded globals are split into individual pointers and use the ; preferred alignment from the datalayout. ;. ; CHECK: @[[A_4:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global ptr null, align 8 ; CHECK: @[[A_5:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global ptr null, align 16 ; CHECK: @[[A_6:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global ptr null, align 16 ; CHECK: @[[A_7:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr externally_initialized global ptr null, align 16 ;. define ptr @reduce_align_0() { ; CHECK-LABEL: @reduce_align_0( ; CHECK-NEXT: [[X:%.*]] = load ptr, ptr @a.4, align 8 ; CHECK-NEXT: ret ptr [[X]] ; %x = load ptr, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 2, i64 0), align 8 store ptr null, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 1, i64 0), align 4 ret ptr %x } define ptr @reduce_align_1() { ; CHECK-LABEL: @reduce_align_1( ; CHECK-NEXT: [[X:%.*]] = load ptr, ptr @a.5, align 16 ; CHECK-NEXT: ret ptr [[X]] ; %x = load ptr, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 2, i64 1), align 4 store ptr null, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 1, i64 1), align 16 ret ptr %x } define ptr @reduce_align_2() { ; CHECK-LABEL: @reduce_align_2( ; CHECK-NEXT: [[X:%.*]] = load ptr, ptr @a.6, align 16 ; CHECK-NEXT: ret ptr [[X]] ; %x = load ptr, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 2, i64 2), align 16 store ptr null, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 1, i64 2), align 4 ret ptr %x } define ptr @reduce_align_3() { ; CHECK-LABEL: @reduce_align_3( ; CHECK-NEXT: [[X:%.*]] = load ptr, ptr @a.7, align 16 ; CHECK-NEXT: ret ptr [[X]] ; %x = load ptr, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 2, i64 3), align 4 store ptr null, ptr getelementptr inbounds ([3 x [7 x ptr]], ptr @a, i64 0, i64 1, i64 3), align 8 ret ptr %x }