llvm-mirror/test/CodeGen/AArch64/global-merge.ll
Jiangning Liu 4291d4247a Global merge for global symbols.
This commit is to improve global merge pass and support global symbol merge.
The global symbol merge is not enabled by default. For aarch64, we need some
more back-end fix to make it really benifit ADRP CSE.

llvm-svn: 210640
2014-06-11 06:44:53 +00:00

31 lines
1.1 KiB
LLVM

; RUN: llc < %s -mtriple=aarch64-none-linux-gnu -O0 | FileCheck --check-prefix=NO-MERGE %s
; RUN: llc < %s -mtriple=aarch64-none-linux-gnu -O0 -global-merge-on-external=true | FileCheck --check-prefix=NO-MERGE %s
; RUN: llc < %s -mtriple=aarch64-apple-ios -O0 | FileCheck %s --check-prefix=CHECK-APPLE-IOS-NO-MERGE
; RUN: llc < %s -mtriple=aarch64-apple-ios -O0 -global-merge-on-external=true | FileCheck %s --check-prefix=CHECK-APPLE-IOS-NO-MERGE
; FIXME: add O1/O2 test for aarch64-none-linux-gnu and aarch64-apple-ios
@m = internal global i32 0, align 4
@n = internal global i32 0, align 4
define void @f1(i32 %a1, i32 %a2) {
; CHECK-LABEL: f1:
; CHECK: adrp x{{[0-9]+}}, _MergedGlobals
; CHECK-NOT: adrp
; CHECK-APPLE-IOS-LABEL: f1:
; CHECK-APPLE-IOS: adrp x{{[0-9]+}}, __MergedGlobals
; CHECK-APPLE-IOS-NOT: adrp
store i32 %a1, i32* @m, align 4
store i32 %a2, i32* @n, align 4
ret void
}
; CHECK: .local _MergedGlobals
; CHECK: .comm _MergedGlobals,8,8
; NO-MERGE-NOT: .local _MergedGlobals
; CHECK-APPLE-IOS: .zerofill __DATA,__bss,__MergedGlobals,8,3
; CHECK-APPLE-IOS-NO-MERGE-NOT: .zerofill __DATA,__bss,__MergedGlobals,8,3