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llvm-project/llvm/test/CodeGen/X86/alignment.ll

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fix PR6921 a different way. Intead of increasing the alignment of globals with a specified alignment, we fix common variables to obey their alignment. Add a comment explaining why this behavior is important. llvm-svn: 102365
2010-04-27 02:46:46 +08:00
; RUN: llc %s -o - -mtriple=x86_64-linux-gnu | FileCheck %s
; This cannot get rounded up to the preferred alignment (16) if they have an
; explicit alignment specified.
@GlobalA = global { [384 x i8] } zeroinitializer, align 8
; CHECK: .bss
; CHECK: .globl GlobalA
[MC] Use .p2align instead of .align For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
2016-01-26 08:03:25 +08:00
; CHECK: .p2align 3
fix PR6921 a different way. Intead of increasing the alignment of globals with a specified alignment, we fix common variables to obey their alignment. Add a comment explaining why this behavior is important. llvm-svn: 102365
2010-04-27 02:46:46 +08:00
; CHECK: GlobalA:
; CHECK: .zero 384
; Common variables should not get rounded up to the preferred alignment (16) if
; they have an explicit alignment specified.
; PR6921
@GlobalB = common global { [384 x i8] } zeroinitializer, align 8
Fix a regression caused by r102515 where explicit alignment on globals is ignored. There was a test to catch this, but it was just blindly updated in a large change. This fixes another part of <rdar://problem/9275290>. llvm-svn: 129466
2011-04-14 04:36:04 +08:00
; CHECK: .comm GlobalB,384,8
Rework global alignment computation again. Now we do round up alignment of globals to the preferred alignment, but only when there is no section specified on the global (by far the common case). llvm-svn: 102515
2010-04-29 03:58:07 +08:00
@GlobalC = common global { [384 x i8] } zeroinitializer, align 2
Fix a regression caused by r102515 where explicit alignment on globals is ignored. There was a test to catch this, but it was just blindly updated in a large change. This fixes another part of <rdar://problem/9275290>. llvm-svn: 129466
2011-04-14 04:36:04 +08:00
; CHECK: .comm GlobalC,384,2
Rework global alignment computation again. Now we do round up alignment of globals to the preferred alignment, but only when there is no section specified on the global (by far the common case). llvm-svn: 102515
2010-04-29 03:58:07 +08:00
; This cannot get rounded up to the preferred alignment (16) if they have an
; explicit alignment specified *and* a section specified.
@GlobalAS = global { [384 x i8] } zeroinitializer, align 8, section "foo"
; CHECK: .globl GlobalAS
[MC] Use .p2align instead of .align For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
2016-01-26 08:03:25 +08:00
; CHECK: .p2align 3
Rework global alignment computation again. Now we do round up alignment of globals to the preferred alignment, but only when there is no section specified on the global (by far the common case). llvm-svn: 102515
2010-04-29 03:58:07 +08:00
; CHECK: GlobalAS:
; CHECK: .zero 384
; Common variables should not get rounded up to the preferred alignment (16) if
; they have an explicit alignment specified and a section specified.
; PR6921
@GlobalBS = common global { [384 x i8] } zeroinitializer, align 8, section "foo"
; CHECK: .comm GlobalBS,384,8
@GlobalCS = common global { [384 x i8] } zeroinitializer, align 2, section "foo"
Add new line at end of file. llvm-svn: 140903
2011-10-01 07:21:11 +08:00
; CHECK: .comm GlobalCS,384,2