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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102515 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 27 insertions, 2 deletions

diff --git a/test/CodeGen/X86/alignment.ll b/test/CodeGen/X86/alignment.ll
index 06a4f3f8e8..9678e6df74 100644
--- a/test/CodeGen/X86/alignment.ll
+++ b/test/CodeGen/X86/alignment.ll
@@ -6,7 +6,7 @@
 
 ; CHECK:	.bss
 ; CHECK:	.globl	GlobalA
-; CHECK:	.align	8
+; CHECK:	.align	16
 ; CHECK: GlobalA:
 ; CHECK:	.zero	384
 
@@ -15,4 +15,29 @@
 ; PR6921
 @GlobalB = common global { [384 x i8] } zeroinitializer, align 8
 
-; CHECK: 	.comm	GlobalB,384,8
\ No newline at end of file
+; CHECK: 	.comm	GlobalB,384,16
+
+
+@GlobalC = common global { [384 x i8] } zeroinitializer, align 2
+
+; CHECK: 	.comm	GlobalC,384,16
+
+
+
+; 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
+; CHECK:	.align	8
+; 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"
+; CHECK: 	.comm	GlobalCS,384,2
\ No newline at end of file