9af2fa9d1b
Use the presence of the __compact_unwind section to indicate that a target
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supports compact unwind info instead of having a separate flag indicating this.
llvm-svn: 133685
2011-06-23 05:13:28 +00:00
f942585dae
Add a flag that indicates whether a target supports compact unwind info or not.
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llvm-svn: 133662
2011-06-22 23:16:51 +00:00
d346304373
Add a __LD,__compact_unwind section.
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If the linker supports it, this will hold the CIE and FDE information in a
compact format. The implementation of the compact unwinding emission is coming
soon.
llvm-svn: 133658
2011-06-22 22:22:24 +00:00
6002068c13
Fix a FIXME by making GlobalVariable::getInitializer() return a
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const Constant *.
llvm-svn: 133400
2011-06-19 18:37:11 +00:00
a48b1375df
Remove a flag that would set the ".eh" symbol as .globl. MachO was the only one
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who used this flag, and it now emits CFI and doesn't emit this anymore. All
other targets left this flag "false".
<rdar://problem/8486371>
llvm-svn: 130918
2011-05-05 06:49:15 +00:00
750cb61553
GCC uses a different encoding of pointers in the FDE when using
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-fno-dwarf2-cfi-asm. Implement the same behavior.
llvm-svn: 130637
2011-05-01 04:49:54 +00:00
ce83fc3463
Remove unnecessary argument.
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llvm-svn: 130343
2011-04-27 23:17:57 +00:00
08704349da
Rename getPersonalityPICSymbol to getCFIPersonalitySymbol, document it, and
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give it a bit more responsibility. Also implement it for MachO.
If hacked to use cfi, 32 bit MachO will produce
.cfi_personality 155, L___gxx_personality_v0$non_lazy_ptr
and 64 bit will produce
.cfi_presonality ___gxx_personality_v0
The general idea is that .cfi_personality gets passed the final symbol. It is
up to codegen to produce it if using indirect representation (like 32 bit
MachO), but it is up to MC to decide which relocations to create.
llvm-svn: 130341
2011-04-27 23:08:15 +00:00
e473aaf540
Remove unused arguments.
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llvm-svn: 129844
2011-04-20 03:08:09 +00:00
47f86e6c60
MSVC needs the return 0 to compile.
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llvm-svn: 129640
2011-04-16 13:59:23 +00:00
a83b177035
Put each personality function in a section. This fixes the gnu ld warning:
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error in foo.o; no .eh_frame_hdr table will be created.
llvm-svn: 129635
2011-04-16 03:51:21 +00:00
a01cdb0e37
Add 129518 back with a fix for when we are producing eh just because of debug info.
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Change ELF systems to use CFI for producing the EH tables. This reduces the
size of the clang binary in Debug builds from 690MB to 679MB.
llvm-svn: 129571
2011-04-15 15:11:06 +00:00
b5e3e9dd27
Revert r129518, "Change ELF systems to use CFI for producing the EH tables. This reduces the"
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It broke several builds.
llvm-svn: 129557
2011-04-15 03:35:57 +00:00
aa2a7cd828
Change ELF systems to use CFI for producing the EH tables. This reduces the
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size of the clang binary in Debug builds from 690MB to 679MB.
llvm-svn: 129518
2011-04-14 15:18:53 +00:00
4b7b7fba38
Delay the creation of eh_frame so that the user can change the defaults.
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Add support for SHT_X86_64_UNWIND.
llvm-svn: 124059
2011-01-23 05:43:40 +00:00
ea4e983d70
minor change to rafael's recent patches: if something is
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constant but requires a unique address, we can still put it in a
readonly section, just not a mergable one.
llvm-svn: 123711
2011-01-18 01:23:44 +00:00
cba4c33949
Only put unnamed_addr constants in mergeable sections. Fixes PR8297.
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llvm-svn: 123585
2011-01-16 17:19:34 +00:00
9f06f911d1
the latest assembler that runs on powerpc 10.4 machines doesn't
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support aligned comm. Detect when compiling for 10.4 and don't
emit an alignment for comm. THis will hopefully fix PR8198.
llvm-svn: 114817
2010-09-27 06:44:54 +00:00
f1d8304fe3
Eliminate unnecessary uses of getZExtValue().
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llvm-svn: 106279
2010-06-18 14:22:04 +00:00
2104b8d36e
rename llvm::llvm_report_error -> llvm::report_fatal_error
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llvm-svn: 100709
2010-04-07 22:58:41 +00:00
aed00fa039
fix GetOrCreateTemporarySymbol to require a name, clients
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should use CreateTempSymbol() if they don't care about the
name.
llvm-svn: 98712
2010-03-17 05:41:18 +00:00
be3242b523
finally give Mangler a getSymbol method, which returns an MCSymbol
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for a global instead of messing around with string buffers.
llvm-svn: 98366
2010-03-12 18:55:20 +00:00
47bef1a8a2
make TargetLoweringObjectFile::getExprForDwarfReference
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just make unnamed temp symbols instead of having to come
up with its own names.
llvm-svn: 98324
2010-03-12 01:56:43 +00:00
03627cb12c
fix a fixme in TargetLoweringObjectFile::getExprForDwarfReference
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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
2010-03-11 21:55:20 +00:00
2562356992
rename getSymbolForDwarf* to getExprForDwarf* since it returns
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an MCExpr and not an MCSymbol. Change it to take an MCStreamer,
which is currently unused.
No functionality change.
llvm-svn: 98278
2010-03-11 19:41:58 +00:00
71c30c164f
move three lowering hooks from MAI to TLOF and make one of them
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semantic instead of syntactic. This completes MCization of
darwin/x86[-64]!
llvm-svn: 98145
2010-03-10 07:20:42 +00:00
ac2361a9b0
set the temporary bit on MCSymbols correctly.
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llvm-svn: 98124
2010-03-10 02:25:11 +00:00
85e5081c77
Make error statement more personal.
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llvm-svn: 96410
2010-02-16 22:47:14 +00:00
ab663a0bfe
Move TLOF implementations to libCodegen to resolve layering violation.
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llvm-svn: 96288
2010-02-15 22:37:53 +00:00
397aecb6d6
Add suffix for stubs, so we won't have name clashes with private symbols.
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llvm-svn: 96286
2010-02-15 22:36:26 +00:00
ae4ccc10da
Preliminary patch to improve dwarf EH generation - Hooks to return Personality / FDE / LSDA / TType encoding depending on target / options (e.g. code model / relocation model) - MCIzation of Dwarf EH printer to use encoding information - Stub generation for ELF target (needed for indirect references) - Some other small changes here and there
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llvm-svn: 96285
2010-02-15 22:35:59 +00:00
94b993ed8a
Simplify some uses of str(n)cmp with StringRef.
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llvm-svn: 94189
2010-01-22 18:21:23 +00:00
cd2915e467
stop using the .lcomm pseudoop on darwin, instead, directly use the
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.zerofill directive. Streamerize its generation.
llvm-svn: 93868
2010-01-19 06:25:51 +00:00
b253421711
make TLOF subclassify BSS based on linkage type into private, external
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and everything else (weak).
llvm-svn: 93846
2010-01-19 04:15:51 +00:00
a986aa33eb
fix a significant difference between llvm and gcc on ELF systems:
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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
2010-01-19 03:06:01 +00:00
5b585f8b1a
introduce a section kind for common linkage. Use this to slightly
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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
2010-01-19 02:48:26 +00:00
1d371882b6
Cleanup handling of .zerofill on darwin:
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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
2010-01-19 02:09:44 +00:00
83e872e1c4
Get MCSymbol out of the mangling business, and move all the logic
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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
2010-01-17 19:23:46 +00:00
f62e3ee8c5
move the mangler into libtarget from vmcore.
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llvm-svn: 93664
2010-01-16 21:57:06 +00:00
a44d8f806b
fix build failure.
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llvm-svn: 93628
2010-01-16 03:38:27 +00:00
32c9512132
remove a couple of actively incorrect uses of getMangledName.
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llvm-svn: 93627
2010-01-16 02:16:09 +00:00
ccbeed2af4
fix ELF section mangling stuff for weak symbols to not use
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obsolete Mangler interfaces.
llvm-svn: 93356
2010-01-13 21:29:21 +00:00
643b817d92
Use the GV version of getNameWithPrefix in TargetLoweringObjectFileCOFF::
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SelectSectionForGlobal, unbreaking weak globals with no-name.
llvm-svn: 93336
2010-01-13 19:19:17 +00:00
b0dc959e1d
add a fixme, ELF MCSection isn't quite right and weak unnamed globals are broken
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on linux (even though they are pointless, they shouldn't ICE).
llvm-svn: 93308
2010-01-13 08:02:14 +00:00
f0a401fcf0
eliminate some uses of Mangler::makeNameProper.
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llvm-svn: 93305
2010-01-13 07:56:59 +00:00
209aecad0c
change Mangler::makeNameProper to return its result in a SmallVector
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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
2010-01-13 06:38:18 +00:00
36ef435eca
We need to put any kind of data with a relocation into a
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not-readonly segment on darwin.
llvm-svn: 92933
2010-01-07 19:44:05 +00:00
31c74dbb10
Reverting the EH table patches.
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$ 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
2009-11-19 19:21:09 +00:00
4b384b0294
The "ReadOnlyWithRel" enum seems to apply more to what Darwin does with the EH
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exception table than DataRel.
llvm-svn: 89279
2009-11-19 00:09:14 +00:00
07e6e2c6f8
Attempt #2 :
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Place the EH table in the __TEXT section on MachO. It saves space.
llvm-svn: 89270
2009-11-18 23:18:46 +00:00
Bill Wendling