stop using the .lcomm pseudoop on darwin, instead, directly use the
.zerofill directive. Streamerize its generation.

llvm-svn: 93868

make TLOF subclassify BSS based on linkage type into private, external
and everything else (weak).

llvm-svn: 93846

fix a significant difference between llvm and gcc on ELF systems:
GCC would put weak zero initialized mutable data in the .bss section,
we would put it into a crasy '.gnu.linkonce.b.test,"aw",@nobits

fix a significant difference between llvm and gcc on ELF systems:
GCC would put weak zero initialized mutable data in the .bss section,
we would put it into a crasy '.gnu.linkonce.b.test,"aw",@nobits'
section. Fixing this will allow simplifications next up.

llvm-svn: 93844

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introduce a section kind for common linkage. Use this to slightly
simplify and commonize some of the asmprinter logic for globals.

This also avoids printing the MCSection for .zerofill, which broke

introduce a section kind for common linkage. Use this to slightly
simplify and commonize some of the asmprinter logic for globals.

This also avoids printing the MCSection for .zerofill, which broke
the llvm-gcc build.

llvm-svn: 93843

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Cleanup handling of .zerofill on darwin:

1. TargetLoweringObjectFileMachO should decide if something
goes in zerofill instead of having every target do it.
2. TargetLoweringObjectFileMachO should

Cleanup handling of .zerofill on darwin:

1. TargetLoweringObjectFileMachO should decide if something
goes in zerofill instead of having every target do it.
2. TargetLoweringObjectFileMachO should assign said symbols to
the right MCSection, the asmprinters should just emit to the
right section.
3. Since all zerofill stuff goes through mcstreamer anymore,
MAI can have a bool "haszerofill" instead of having the textual
directive to emit.

llvm-svn: 93838

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Get MCSymbol out of the mangling business, and move all the logic
to Mangler. Now MCSymbol just decides whether to slap quotes around
a symbol when printing it.

This also fixes some weirdness where

Get MCSymbol out of the mangling business, and move all the logic
to Mangler. Now MCSymbol just decides whether to slap quotes around
a symbol when printing it.

This also fixes some weirdness where two MCSymbols could be created
for the same symbol, if one needed to be mangled and got mangled to
the other one.

llvm-svn: 93690

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move the mangler into libtarget from vmcore.

llvm-svn: 93664

fix build failure.

llvm-svn: 93628

remove a couple of actively incorrect uses of getMangledName.

llvm-svn: 93627

fix ELF section mangling stuff for weak symbols to not use
obsolete Mangler interfaces.

llvm-svn: 93356

Use the GV version of getNameWithPrefix in TargetLoweringObjectFileCOFF::
SelectSectionForGlobal, unbreaking weak globals with no-name.

llvm-svn: 93336

add a fixme, ELF MCSection isn't quite right and weak unnamed globals are broken
on linux (even though they are pointless, they shouldn't ICE).

llvm-svn: 93308

eliminate some uses of Mangler::makeNameProper.

llvm-svn: 93305

change Mangler::makeNameProper to return its result in a SmallVector
instead of returning it in an std::string. Based on this change:

1. Change TargetLoweringObjectFileCOFF::getCOFFSection to take

change Mangler::makeNameProper to return its result in a SmallVector
instead of returning it in an std::string. Based on this change:

1. Change TargetLoweringObjectFileCOFF::getCOFFSection to take a StringRef
2. Change a bunch of targets to call makeNameProper with a smallstring,
making several of them *much* more efficient.
3. Rewrite Mangler::makeNameProper to not build names and then prepend
prefixes, not use temporary std::strings, and to avoid other crimes.

llvm-svn: 93298

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We need to put any kind of data with a relocation into a
not-readonly segment on darwin.

llvm-svn: 92933

Reverting the EH table patches.

$ svn merge -c -89279 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89279 into '.':
U lib/CodeGen/AsmPrinter/DwarfException.cpp
U lib/Target

Reverting the EH table patches.

$ svn merge -c -89279 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89279 into '.':
U lib/CodeGen/AsmPrinter/DwarfException.cpp
U lib/Target/TargetLoweringObjectFile.cpp
$ svn merge -c -89270 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89270 into '.':
G lib/CodeGen/AsmPrinter/DwarfException.cpp
G lib/Target/TargetLoweringObjectFile.cpp

llvm-svn: 89379

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The "ReadOnlyWithRel" enum seems to apply more to what Darwin does with the EH
exception table than DataRel.

llvm-svn: 89279

Attempt #2:

Place the EH table in the __TEXT section on MachO. It saves space.

llvm-svn: 89270

add some missing #includes

llvm-svn: 86367

Pass StringRef by value.

llvm-svn: 86251

--- Reverse-merging r82282 into '.':
U lib/CodeGen/AsmPrinter/DwarfException.cpp
U lib/CodeGen/AsmPrinter/DwarfException.h

--- Reverse-merging r82274 into '.':
U lib/Target/TargetLoweringOb

--- Reverse-merging r82282 into '.':
U lib/CodeGen/AsmPrinter/DwarfException.cpp
U lib/CodeGen/AsmPrinter/DwarfException.h

--- Reverse-merging r82274 into '.':
U lib/Target/TargetLoweringObjectFile.cpp
G lib/CodeGen/AsmPrinter/DwarfException.cpp

These revisions were breaking everything.

llvm-svn: 82396

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Still one more thing wrong here...

llvm-svn: 82356

Here's fun! It turns out that these filter functions can be internal. If they're
internal, they shouldn't use the indirect pointer stuff. In the case of
throw_rethrow_test, it was marked as 'internal

Here's fun! It turns out that these filter functions can be internal. If they're
internal, they shouldn't use the indirect pointer stuff. In the case of
throw_rethrow_test, it was marked as 'internal' and calculated its own offset to
its contents.

llvm-svn: 82354

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Revert r82274. It's causing failures in the CINT2006 benchmarks.

llvm-svn: 82336

It's inefficient to have place the exception tables (which contain the LSDA)
into the __DATA section. At launch time, dyld has to update most of the section
to fix up the type info pointers. It's bet

It's inefficient to have place the exception tables (which contain the LSDA)
into the __DATA section. At launch time, dyld has to update most of the section
to fix up the type info pointers. It's better to place it into the __TEXT
section and use pc-rel indirect pointer encodings. Similar to the personality
routine.

llvm-svn: 82274

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