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0430bb0872
If no alignment is set, the abi/preferred alignment of structs will be used which may be higher than required. This can lead to extra padding and in the end an increase in data size. Differential Revision: https://reviews.llvm.org/D47633 llvm-svn: 334099
44 lines
1.6 KiB
LLVM
44 lines
1.6 KiB
LLVM
; RUN: llc %s -mtriple=aarch64-none-linux-gnu -aarch64-enable-global-merge -global-merge-on-external -disable-post-ra -o - | FileCheck %s
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; RUN: llc %s -mtriple=aarch64-linux-gnuabi -aarch64-enable-global-merge -global-merge-on-external -disable-post-ra -o - | FileCheck %s
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; RUN: llc %s -mtriple=aarch64-apple-ios -aarch64-enable-global-merge -global-merge-on-external -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-APPLE-IOS
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@x = global [1000 x i32] zeroinitializer, align 1
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@y = global [1000 x i32] zeroinitializer, align 1
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@z = internal global i32 1, align 4
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define void @f1(i32 %a1, i32 %a2, i32 %a3) {
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;CHECK-APPLE-IOS: adrp x8, __MergedGlobals_x@PAGE
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;CHECK-APPLE-IOS-NOT: adrp
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;CHECK-APPLE-IOS: add x8, x8, __MergedGlobals_x@PAGEOFF
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;CHECK-APPLE-IOS: adrp x9, _y@PAGE+12
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;CHECK-APPLE-IOS: str w1, [x9]
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%x3 = getelementptr inbounds [1000 x i32], [1000 x i32]* @x, i32 0, i64 3
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%y3 = getelementptr inbounds [1000 x i32], [1000 x i32]* @y, i32 0, i64 3
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store i32 %a1, i32* %x3, align 4
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store i32 %a2, i32* %y3, align 4
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store i32 %a3, i32* @z, align 4
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ret void
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}
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;CHECK: .type .L_MergedGlobals,@object // @_MergedGlobals
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;CHECK: .p2align 2
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;CHECK: .L_MergedGlobals:
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;CHECK: .size .L_MergedGlobals, 4004
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;CHECK-APPLE-IOS: .zerofill __DATA,__common,_y,4000,2
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;CHECK-APPLE-IOS: .p2align 2
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;CHECK-APPLE-IOS: __MergedGlobals_x:
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;CHECK-APPLE-IOS: .long 1
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;CHECK-APPLE-IOS: .space 4000
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;CHECK: .set z, .L_MergedGlobals
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;CHECK: .globl x
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;CHECK: .set x, .L_MergedGlobals+4
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;CHECK: .size x, 4000
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;CHECK-APPLE-IOS-NOT: .set _z, __MergedGlobals_x
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;CHECK-APPLE-IOS:.globl _x
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;CHECK-APPLE-IOS:.set _x, __MergedGlobals_x+4
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