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84 Commits

Author SHA1 Message Date
Bill Wendling 57e3aaad89 Check the visibility of the global variable before placing it into the stubs 
table. A hidden variable could potentially end up in both lists.
<rdar://problem/10336715>

llvm-svn: 142869
 2011-10-24 23:05:43 +00:00
Evan Cheng bbf3b0de8b Goodbye TargetAsmInfo. This eliminate last bit of CodeGen and Target in llvm-mc. 
There is still a bit more refactoring left to do in Targets. But we are now very
close to fixing all the layering issues in MC.

llvm-svn: 135611
 2011-07-20 19:50:42 +00:00
Evan Cheng 76792992d6 Add MCObjectFileInfo and sink the MCSections initialization code from 
TargetLoweringObjectFileImpl down to MCObjectFileInfo.

TargetAsmInfo is done to one last method. It's *almost* gone!

llvm-svn: 135569
 2011-07-20 05:58:47 +00:00
Evan Cheng ccf243d56b Fix an obvious typo that's preventing x86 (32-bit) from using .literal16. 
llvm-svn: 135535
 2011-07-19 23:14:32 +00:00
Evan Cheng 2d7faa5e3e Fix up TargetLoweringObjectFile ctors to properly initialize fields. 
llvm-svn: 135068
 2011-07-13 19:54:59 +00:00
Bill Wendling 9af2fa9d1b Use the presence of the __compact_unwind section to indicate that a target 
supports compact unwind info instead of having a separate flag indicating this.

llvm-svn: 133685
 2011-06-23 05:13:28 +00:00
Bill Wendling f942585dae Add a flag that indicates whether a target supports compact unwind info or not. 
llvm-svn: 133662
 2011-06-22 23:16:51 +00:00
Bill Wendling d346304373 Add a __LD,__compact_unwind section. 
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
Rafael Espindola 51d2d7aabc Fix invalid uses of Twine. Hopefully this fixes the problem that Takumi is 
having.

llvm-svn: 132898
 2011-06-13 03:09:13 +00:00
Rafael Espindola c85e0d81e4 Fix a silly error I introduce in r131951. 
Fixes PR10095.

llvm-svn: 132735
 2011-06-07 23:26:45 +00:00
Charles Davis 041ec4aada Add the suffix to the Win64 EH data sections' names if given. Add a test for 
this. XFAIL'd, because the COFF AsmParser can't handle .section yet.

llvm-svn: 132220
 2011-05-27 21:38:47 +00:00
Charles Davis 936847ddf5 Revert r132111. I built Release (without Asserts), so I didn't know about the 
assert that prevented setting alignment on section creation.

llvm-svn: 132113
 2011-05-26 05:35:55 +00:00
Charles Davis 4be76e2152 Align Win64 EH Table sections to 4 bytes. 
llvm-svn: 132111
 2011-05-26 05:19:54 +00:00
Rafael Espindola 0d018b1155 Explain FIXME. 
llvm-svn: 131952
 2011-05-24 03:10:31 +00:00
Rafael Espindola 0f33be1b87 Fix the defaults for .eh_frame. We were marking it as writable. 
llvm-svn: 131951
 2011-05-24 02:50:20 +00:00
Charles Davis 1a1d4777b9 Fix typo. When will I learn? 
llvm-svn: 131765
 2011-05-20 22:23:34 +00:00
Charles Davis bc1feb1f25 Add .pdata and .xdata sections to the COFF TLOF implementation. 
llvm-svn: 131763
 2011-05-20 22:13:55 +00:00
Bill Wendling a48b1375df Remove a flag that would set the ".eh" symbol as .globl. MachO was the only one 
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
Rafael Espindola 750cb61553 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637
 2011-05-01 04:49:54 +00:00
Rafael Espindola ce83fc3463 Remove unnecessary argument. 
llvm-svn: 130343
 2011-04-27 23:17:57 +00:00
Rafael Espindola 08704349da Rename getPersonalityPICSymbol to getCFIPersonalitySymbol, document it, and 
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
Rafael Espindola 3989776770 Fix indentation. 
llvm-svn: 130331
 2011-04-27 21:29:52 +00:00
Rafael Espindola e473aaf540 Remove unused arguments. 
llvm-svn: 129844
 2011-04-20 03:08:09 +00:00
Daniel Dunbar cd01ed5bd6 ADT/Triple: Renambe isOSX... methods to isMacOSX for consistency with the OS 
triple component.

llvm-svn: 129838
 2011-04-20 00:14:25 +00:00
Daniel Dunbar 4a7783b0c2 CodeGen: Eliminate a use of getDarwinMajorNumber(). 
- There is a minor semantic change here (evidenced by the test change) for
   Darwin triples that have no version component. I debated changing the default
   behavior of isOSVersionLT, but decided it made more sense for triples to be
   explicit.

llvm-svn: 129802
 2011-04-19 20:32:39 +00:00
Rafael Espindola a83b177035 Put each personality function in a section. This fixes the gnu ld warning: 
error in foo.o; no .eh_frame_hdr table will be created.

llvm-svn: 129635
 2011-04-16 03:51:21 +00:00
Stuart Hastings 12d5312622 Reapply 127939 since Daniel fixed the breakage. <rdar://problem/9012638> 
llvm-svn: 127944
 2011-03-19 02:42:31 +00:00
Stuart Hastings 08b4daa191 Revert 127939. <rdar://problem/9012638> 
llvm-svn: 127943
 2011-03-19 02:33:56 +00:00
Stuart Hastings 83d4a28d1f Revise r126127 to address Daniel's comments. <rdar://problem/9012638> 
llvm-svn: 127939
 2011-03-19 01:32:01 +00:00
Rafael Espindola 601a11edd4 Fix llvm-gcc bootstrap with gnu ld. 
The problem was codegen guessing the wrong values and printing

	.section	.eh_frame,"aMS",@progbits,4

It is not clear at all if Codegen should try to guess, MC is the
one that should know the default flags.

llvm-svn: 126421
 2011-02-24 20:18:01 +00:00
Eric Christopher 9b48fef478 Revert r125960, it's breaking darwin10 bootstrap. 
llvm-svn: 126163
 2011-02-21 23:52:19 +00:00
Stuart Hastings b4863a41e9 Fix to correctly support attribute((section("__DATA, __common"))). 
Radar 9012638.

llvm-svn: 126127
 2011-02-21 17:27:17 +00:00
Bill Wendling 8fbe09f160 Reapply r114997 now that the buildbots have been updated. 
llvm-svn: 125960
 2011-02-18 21:12:58 +00:00
Rafael Espindola 70d8015063 Switch llvm to using comdats. For now always use groups with a single 
section.

llvm-svn: 125526
 2011-02-14 22:23:49 +00:00
Rafael Espindola 4b7b7fba38 Delay the creation of eh_frame so that the user can change the defaults. 
Add support for SHT_X86_64_UNWIND.

llvm-svn: 124059
 2011-01-23 05:43:40 +00:00
Rafael Espindola 0e7e34e476 Remove more duplicated code. 
llvm-svn: 124056
 2011-01-23 04:43:11 +00:00
Rafael Espindola aea4958ea6 Remove duplicated code. 
llvm-svn: 124054
 2011-01-23 04:28:49 +00:00
Rafael Espindola 0a017a6db2 Fixed version of 121434 with no new memory leaks. 
llvm-svn: 121471
 2010-12-10 07:39:47 +00:00
Rafael Espindola a945a34c73 Revert my previous patch to make the valgrind bots happy. 
llvm-svn: 121461
 2010-12-10 04:01:09 +00:00
Rafael Espindola 56eb741237 Initial support for the cfi directives. This is just enough to get 
f:
        .cfi_startproc
        nop
        .cfi_endproc

assembled (on ELF).

llvm-svn: 121434
 2010-12-09 23:48:29 +00:00
Rafael Espindola 9bb44a5ce8 Fixed version of 118639 with an extra assert to catch similar problems 
earlier. Implicit bool -> int conversions are evil!

llvm-svn: 118651
 2010-11-09 23:42:07 +00:00
Michael J. Spencer 0f83d96852 COFF: Add IMAGE_SCN_MEM_READ to text sections. 
There are currently 100 references to COFF::IMAGE_SCN in 6 files
and 11 different functions. Section to attribute mapping really
needs to happen in one place to avoid problems like this.

llvm-svn: 117473
 2010-10-27 18:52:29 +00:00
Michael J. Spencer fbdab0d633 Fix whitespace. 
llvm-svn: 117472
 2010-10-27 18:52:20 +00:00
NAKAMURA Takumi 392f084f46 lib/CodeGen/TargetLoweringObjectFileImpl.cpp: Tweak to emit ".{section}${name}" instead of ".{section}$linkonce_{name}" for linkonce sections. 
It seems GNU ld/PECOFF relies on section names, linking with g++'s libstdc++.a would fail.

llvm-svn: 116791
 2010-10-19 03:24:42 +00:00
Anton Korobeynikov fc3642b205 Do not check that the bodies of two defs of same linkonce global are the same. 
Such a check does not make any sense in presense of inlining and other compiler-dependent stuff.
This should fix bunch of warnings on mingw32.

llvm-svn: 116113
 2010-10-08 21:50:04 +00:00
Bill Wendling b0b2c57149 Revert r114997. It was causing a failure on darwin10-selfhost. 
llvm-svn: 115002
 2010-09-28 23:11:55 +00:00
Bill Wendling d848beb1e5 Fix a FIXME. _foo.eh symbols are currently always exported so that the linker 
knows about them. This is not necessary on 10.6 and later.

llvm-svn: 114997
 2010-09-28 22:36:56 +00:00
Chris Lattner 9f06f911d1 the latest assembler that runs on powerpc 10.4 machines doesn't 
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
Chris Lattner 34bfab0ad5 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
 2010-08-30 18:12:35 +00:00
Chris Lattner 60b131654b 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
 2010-07-15 21:22:00 +00:00