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fix the definitions of ConstTextCoalSection/ConstDataCoalSection

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to keep "Text" in sync with the "pure instructions" section attribute.
Lack of this attribute was preventing the assembler from emitting
multibyte noops instructions for templates (and inlines, and other
coalesced stuff) and was causing the assembler to mismatch .o files.

This fixes rdar://8018335

llvm-svn: 108461
This commit is contained in:
Chris Lattner 2010-07-15 21:22:00 +00:00
parent 403b684f74
commit e2f110cba5
2 changed files with 5 additions and 4 deletions
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5
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
View File

@ -518,12 +518,13 @@ void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
SectionKind::getText());
ConstTextCoalSection
= getContext().getMachOSection("__TEXT", "__const_coal",
MCSectionMachO::S_COALESCED,
MCSectionMachO::S_COALESCED |
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
SectionKind::getText());
ConstDataCoalSection
= getContext().getMachOSection("__DATA","__const_coal",
MCSectionMachO::S_COALESCED,
SectionKind::getText());
SectionKind::getReadOnly());
ConstDataSection // .const_data
= getContext().getMachOSection("__DATA", "__const", 0,
SectionKind::getReadOnlyWithRel());

4
test/CodeGen/X86/global-sections.ll
View File

@ -20,7 +20,7 @@
; TODO: linux drops this into .rodata, we drop it into ".gnu.linkonce.r.G2"
; DARWIN: .section __TEXT,__const_coal,coalesced
; DARWIN: .section __TEXT,__const_coal,coalesced,pure_instructions
; DARWIN: _G2:
; DARWIN: .long 42
@ -85,7 +85,7 @@
; LINUX: .byte 1
; LINUX: .size G6, 1
; DARWIN: .section __TEXT,__const_coal,coalesced
; DARWIN: .section __TEXT,__const_coal,coalesced,pure_instructions
; DARWIN: .globl _G6
; DARWIN: .weak_definition _G6
; DARWIN:_G6: