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Rework global alignment computation again. Now we do round up

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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
This commit is contained in:
Chris Lattner
2010-04-28 19:58:07 +00:00
parent 54fc4d6a48
commit e87f7bb50e
5 changed files with 70 additions and 33 deletions
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29
test/CodeGen/X86/alignment.ll
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@@ -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
; 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