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llvm-project/llvm/test/CodeGen/ARM/elf-lcomm-align.ll

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Don't drop alignment info on local common symbols. - On COFF the .lcomm directive has an alignment argument. - On ELF we fall back to .local + .comm Based on a patch by NAKAMURA Takumi. Fixes PR9337, PR9483 and PR10128. llvm-svn: 138976
2011-09-02 07:04:27 +08:00
; RUN: llc < %s -mtriple=arm-linux-gnueabi -O0 | FileCheck %s
; run with -O0 to avoid arm global merging.
@c = internal global i8 0, align 1
@x = internal global i32 0, align 4
Never use .lcomm on platforms where it does not accept an alignment argument. Instead, use a pair of .local and .comm directives. This avoids spurious differences between binaries built by the integrated assembler vs. those built by the external assembler, since the external assembler may impose alignment requirements on .lcomm symbols where the integrated assembler does not. llvm-svn: 168704
2012-11-28 00:11:16 +08:00
; .lcomm doesn't support alignment, so we always use .local/.comm.
; CHECK: .local c
; CHECK-NEXT: .comm c,1,1
Don't drop alignment info on local common symbols. - On COFF the .lcomm directive has an alignment argument. - On ELF we fall back to .local + .comm Based on a patch by NAKAMURA Takumi. Fixes PR9337, PR9483 and PR10128. llvm-svn: 138976
2011-09-02 07:04:27 +08:00
; CHECK: .local x
; CHECK-NEXT: .comm x,4,4
define i32 @foo() nounwind {
ret i32 sub (i32 ptrtoint (i8* @c to i32), i32 ptrtoint (i32* @x to i32))
}