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1843d3de5d
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244752 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.6 KiB
LLVM
47 lines
1.6 KiB
LLVM
; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge | FileCheck %s --check-prefix=CHECK-MERGE
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; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge -global-merge-on-external=true | FileCheck %s --check-prefix=CHECK-MERGE
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; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge -global-merge-on-external=false | FileCheck %s --check-prefix=CHECK-NO-MERGE
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; RUN: llc < %s -mtriple=arm-macho -arm-global-merge | FileCheck %s --check-prefix=CHECK-NO-MERGE
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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: f1:
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;CHECK: ldr {{r[0-9]+}}, [[LABEL1:\.LCPI[0-9]+_[0-9]]]
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;CHECK: [[LABEL1]]:
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;CHECK-MERGE: .long .L_MergedGlobals
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;CHECK-NO-MERGE: .long {{_?x}}
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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: g1:
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;CHECK: ldr {{r[0-9]+}}, [[LABEL2:\.LCPI[0-9]+_[0-9]]]
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;CHECK: [[LABEL2]]:
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;CHECK-MERGE: .long .L_MergedGlobals
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;CHECK-NO-MERGE: .long {{_?y}}
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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-NO-MERGE-NOT: .globl .L_MergedGlobals
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;CHECK-MERGE: .type .L_MergedGlobals,%object
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;CHECK-MERGE: .local .L_MergedGlobals
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;CHECK-MERGE: .comm .L_MergedGlobals,12,4
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;CHECK-MERGE: .globl x
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;CHECK-MERGE: x = .L_MergedGlobals
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;CHECK-MERGE: .size x, 4
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;CHECK-MERGE: .globl y
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;CHECK-MERGE: y = .L_MergedGlobals+4
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;CHECK-MERGE: .size y, 4
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;CHECK-MERGE: .globl z
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;CHECK-MERGE: z = .L_MergedGlobals+8
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;CHECK-MERGE: .size z, 4
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