fix the definitions of ConstTextCoalSection/ConstDataCoalSection
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108461 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index a80cfc4..3b25714 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -518,12 +518,13 @@
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());
diff --git a/test/CodeGen/X86/global-sections.ll b/test/CodeGen/X86/global-sections.ll
index 6d21191..2d8f429 100644
--- a/test/CodeGen/X86/global-sections.ll
+++ b/test/CodeGen/X86/global-sections.ll
@@ -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: