llvm-6502/test/CodeGen/AArch64/global-merge-1.ll
Tim Northover 09d2a61cd4 AArch64: strengthen Darwin ABI alignment assumptions
A global variable without an explicit alignment specified should be assumed to
be ABI-aligned according to its type, like on other platforms. This allows us
to use better memory operations when accessing it.

rdar://18533701

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223180 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-02 23:53:43 +00:00

28 lines
1.2 KiB
LLVM

; RUN: llc %s -mtriple=aarch64-none-linux-gnu -enable-global-merge -o - | FileCheck %s
; RUN: llc %s -mtriple=aarch64-none-linux-gnu -enable-global-merge -global-merge-on-external -o - | FileCheck %s
; RUN: llc %s -mtriple=aarch64-linux-gnuabi -enable-global-merge -o - | FileCheck %s
; RUN: llc %s -mtriple=aarch64-linux-gnuabi -enable-global-merge -global-merge-on-external -o - | FileCheck %s
; RUN: llc %s -mtriple=aarch64-apple-ios -enable-global-merge -o - | FileCheck %s --check-prefix=CHECK-APPLE-IOS
; RUN: llc %s -mtriple=aarch64-apple-ios -enable-global-merge -global-merge-on-external -o - | FileCheck %s --check-prefix=CHECK-APPLE-IOS
@m = internal global i32 0, align 4
@n = internal global i32 0, align 4
define void @f1(i32 %a1, i32 %a2) {
;CHECK-APPLE-IOS-NOT: adrp
;CHECK-APPLE-IOS: adrp x8, __MergedGlobals@PAGE
;CHECK-APPLE-IOS-NOT: adrp
;CHECK-APPLE-IOS: add x8, x8, __MergedGlobals@PAGEOFF
store i32 %a1, i32* @m, align 4
store i32 %a2, i32* @n, align 4
ret void
}
;CHECK: .type _MergedGlobals,@object // @_MergedGlobals
;CHECK: .local _MergedGlobals
;CHECK: .comm _MergedGlobals,8,8
;CHECK-APPLE-IOS: .zerofill __DATA,__bss,__MergedGlobals,8,3 ; @_MergedGlobals