Fix PR6921: globals were not getting correctly rounded up to their

preferred alignment unless they were common or some other special
case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102300 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/X86/alignment.ll

@@ -0,0 +1,16 @@
+; RUN: llc %s -o - -mtriple=x86_64-linux-gnu | FileCheck %s
+
+; This can get rounded up to the preferred alignment (16).
+; PR6921
+@GlobalA = global { [384 x i8] } zeroinitializer, align 8 
+
+; CHECK:	.bss
+; CHECK:	.globl	GlobalA
+; CHECK:	.align	16
+; CHECK: GlobalA:
+; CHECK:	.zero	384
+
+; Common variables should also get rounded up to the preferred alignment (16).
+@GlobalB = common global { [384 x i8] } zeroinitializer, align 8
+
+; CHECK: 	.comm	GlobalB,384,16 

test/CodeGen/X86/unaligned-load.ll

@@ -28,8 +28,9 @@ return:
 
 declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
 
-; CORE2: .align  3
+; CORE2: .section
+; CORE2: .align  4
 ; CORE2-NEXT: _.str1:
 ; CORE2-NEXT: .asciz "DHRYSTONE PROGRAM, SOME STRING"
-; CORE2: .align 3
+; CORE2: .align 4
 ; CORE2-NEXT: _.str3: