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dcf7a81cdd
r242520 was reverted in r244313 as the expected behaviour of the alias attribute in C is that the alias has the same size as the aliasee. However we can re-introduce adding the size on the alias when the aliasee does not, from a source code or object perspective, exist as a discrete entity. This happens when the aliasee is not a symbol, or when that symbol is private. Differential Revision: http://reviews.llvm.org/D11943 llvm-svn: 244752
53 lines
1.6 KiB
LLVM
53 lines
1.6 KiB
LLVM
; RUN: llc %s -mtriple=aarch64-none-linux-gnu -aarch64-global-merge -global-merge-on-external -o - | FileCheck %s
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; RUN: llc %s -mtriple=aarch64-linux-gnuabi -aarch64-global-merge -global-merge-on-external -o - | FileCheck %s
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; RUN: llc %s -mtriple=aarch64-apple-ios -aarch64-global-merge -global-merge-on-external -o - | FileCheck %s --check-prefix=CHECK-APPLE-IOS
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@x = global i32 0, align 4
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@y = global i32 0, align 4
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@z = global i32 0, align 4
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define void @f1(i32 %a1, i32 %a2) {
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;CHECK-APPLE-IOS-LABEL: _f1:
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;CHECK-APPLE-IOS-NOT: adrp
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;CHECK-APPLE-IOS: adrp x8, l__MergedGlobals@PAGE
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;CHECK-APPLE-IOS: add x8, x8, l__MergedGlobals@PAGEOFF
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;CHECK-APPLE-IOS-NOT: adrp
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store i32 %a1, i32* @x, align 4
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store i32 %a2, i32* @y, align 4
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ret void
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}
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define void @g1(i32 %a1, i32 %a2) {
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;CHECK-APPLE-IOS-LABEL: _g1:
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;CHECK-APPLE-IOS: adrp x8, l__MergedGlobals@PAGE
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;CHECK-APPLE-IOS: add x8, x8, l__MergedGlobals@PAGEOFF
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;CHECK-APPLE-IOS-NOT: adrp
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store i32 %a1, i32* @y, align 4
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store i32 %a2, 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: .local .L_MergedGlobals
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;CHECK: .comm .L_MergedGlobals,12,8
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;CHECK: .globl x
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;CHECK: x = .L_MergedGlobals
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;CHECK: .size x, 4
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;CHECK: .globl y
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;CHECK: y = .L_MergedGlobals+4
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;CHECK: .size y, 4
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;CHECK: .globl z
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;CHECK: z = .L_MergedGlobals+8
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;CHECK: .size z, 4
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;CHECK-APPLE-IOS: .zerofill __DATA,__bss,l__MergedGlobals,12,3
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;CHECK-APPLE-IOS: .globl _x
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;CHECK-APPLE-IOS: = l__MergedGlobals
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;CHECK-APPLE-IOS: .globl _y
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;CHECK-APPLE-IOS: _y = l__MergedGlobals+4
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;CHECK-APPLE-IOS: .globl _z
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;CHECK-APPLE-IOS: _z = l__MergedGlobals+8
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;CHECK-APPLE-IOS: .subsections_via_symbols
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