two changes:
1) nuke ConstDataCoalSection, which is dead.
2) revise my previous patch for rdar://8018335,
which was completely wrong. Specifically, it doesn't
make sense to mark __TEXT,__const_

two changes:
1) nuke ConstDataCoalSection, which is dead.
2) revise my previous patch for rdar://8018335,
which was completely wrong. Specifically, it doesn't
make sense to mark __TEXT,__const_coal as PURE_INSTRUCTIONS,
because it is for readonly data. templates (it turns out)
go to const_coal_nt. The real fix for rdar://8018335 was
to give ConstTextCoalSection a section kind of ReadOnly
instead of Text.

llvm-svn: 112496

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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 emitti

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

llvm-svn: 108461

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Fix a major regression on COFF targets introduced by r103267: 'discardable' section means that it is used only during the program load and can be discarded afterwards.
This way *only* debug sections

Fix a major regression on COFF targets introduced by r103267: 'discardable' section means that it is used only during the program load and can be discarded afterwards.
This way *only* debug sections can be discarded, but not the opposite. Seems like the copy-and-pasto from ELF code, since there it contains the reverse flag ('alloc').

llvm-svn: 107658

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MC: Move COFF enumeration constants to llvm/Support/COFF.h, patch by Michael
Spencer!

llvm-svn: 107418

Revert r107205 and r107207.

llvm-svn: 107215

Introducing the "linker_weak" linkage type. This will be used for Objective-C
metadata types which should be marked as "weak", but which the linker will
remove upon final linkage. For example, the "o

Introducing the "linker_weak" linkage type. This will be used for Objective-C
metadata types which should be marked as "weak", but which the linker will
remove upon final linkage. For example, the "objc_msgSend_fixup_alloc" symbol is
defined like this:

.globl l_objc_msgSend_fixup_alloc
.weak_definition l_objc_msgSend_fixup_alloc
.section __DATA, __objc_msgrefs, coalesced
.align 3
l_objc_msgSend_fixup_alloc:
.quad _objc_msgSend_fixup
.quad L_OBJC_METH_VAR_NAME_1

This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".

llvm-svn: 107205

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Add support for initialized global data for darwin tls. Update comments
and testcases accordingly.

llvm-svn: 104635

Add full bss data support for darwin tls variables.

llvm-svn: 104414

More data/parsing support for tls directives. Add a few more testcases
and cleanup comments as well.

llvm-svn: 103985

Add some section and constant support for darwin TLS.

llvm-svn: 103974

add COFF support for COMDAT sections, patch by Nathan Jeffords!

llvm-svn: 103304

switch MCSectionCOFF from a syntactic to semantic representation,
patch by Peter Housel!

llvm-svn: 103267

add llvm codegen support for -ffunction-sections and -fdata-sections,
patch by Sylvere Teissier!

llvm-svn: 101106

delete a forwarding function.

llvm-svn: 100815

move elf section uniquing to MCContext. Along the way
merge XCore's section into MCSectionELF

llvm-svn: 100812

remove the TargetLoweringObjectFileMachO::getMachoSection
api and update clients to use MCContext instead.

llvm-svn: 100808

move macho section uniquing from MCParser and TLOF to MCContext where
the compiler and asmparser now unique to the same sections. This fixes
rdar://7835021.

llvm-svn: 100807

rename llvm::llvm_report_error -> llvm::report_fatal_error

llvm-svn: 100709

Rip out the 'is temporary' nonsense from the MCContext interface to
create symbols. It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.

This fixe

Rip out the 'is temporary' nonsense from the MCContext interface to
create symbols. It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.

This fixes rdar://7807601.

llvm-svn: 99902

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Now that the default for Darwin platforms is to place the LSDA into the TEXT
section, remove the target-specific code that performs this.

llvm-svn: 98580

use Mang->getSymbol() more.

llvm-svn: 98577

fix MCSectionELF to not leak memory, just like I did for MCSymbol.
MCSectionMachO is already fine (yay for fixed size arrays?),
MCSectionCOFF still leaks.

llvm-svn: 98537

fix a fixme in TargetLoweringObjectFile::getExprForDwarfReference
where we used ot create an MCSymbol for ".". Now emit an assembler
temporary label and reference it instead of "." textually.

rdar:

fix a fixme in TargetLoweringObjectFile::getExprForDwarfReference
where we used ot create an MCSymbol for ".". Now emit an assembler
temporary label and reference it instead of "." textually.

rdar://7739457

llvm-svn: 98292

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rename getSymbolForDwarf* to getExprForDwarf* since it returns
an MCExpr and not an MCSymbol. Change it to take an MCStreamer,
which is currently unused.

No functionality change.

llvm-svn: 98278

Add a bit along with the MCSymbols stored in the MachineModuleInfo maps that
indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct info

Add a bit along with the MCSymbols stored in the MachineModuleInfo maps that
indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct information to add to non-lazy
pointers. That will be explained further when this bit is used.

llvm-svn: 98199

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