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Commit Graph

95 Commits

Author SHA1 Message Date
Ivan Krasin
6d62a9f1b3 lto/addAsmGlobalSymbols: fail fracefully when the target does not define AsmParser.
llvm-svn: 139283
2011-09-08 07:36:39 +00:00
Benjamin Kramer
bd939ad83e Don't drop alignment info on local common symbols.
- On COFF the .lcomm directive has an alignment argument.
- On ELF we fall back to .local + .comm

Based on a patch by NAKAMURA Takumi.

Fixes PR9337, PR9483 and PR10128.

llvm-svn: 138976
2011-09-01 23:04:27 +00:00
Evan Cheng
420bf5446c Move TargetRegistry and TargetSelect from Target to Support where they belong.
These are strictly utilities for registering targets and components.

llvm-svn: 138450
2011-08-24 18:08:43 +00:00
Jim Grosbach
a9a0c62719 Remove unused Target argument from AsmParser construction methods.
The argument is unused, and is a layering violation in any case.

llvm-svn: 137735
2011-08-16 18:33:49 +00:00
Evan Cheng
2e96785311 Rename TargetAsmParser to MCTargetAsmParser and TargetAsmLexer to MCTargetAsmLexer; rename createAsmLexer to createMCAsmLexer and createAsmParser to createMCAsmParser.
llvm-svn: 136027
2011-07-26 00:24:13 +00:00
Evan Cheng
13d54fc7c9 Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where they belong.
llvm-svn: 135833
2011-07-23 00:45:41 +00:00
Evan Cheng
7b4cb12a95 Combine all MC initialization routines into one. e.g. InitializeX86MCAsmInfo,
InitializeX86MCInstrInfo, etc. are combined into InitializeX86TargetMC.

llvm-svn: 135812
2011-07-22 21:58:54 +00:00
Evan Cheng
c9bc5a9011 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
380dc98371 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
bfc0cac54d Introduce MCCodeGenInfo, which keeps information that can affect codegen
(including compilation, assembly). Move relocation model Reloc::Model from
TargetMachine to MCCodeGenInfo so it's accessible even without TargetMachine.

llvm-svn: 135468
2011-07-19 06:37:02 +00:00
Evan Cheng
561d71ce7b Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo down
to MCRegisterInfo. Also initialize the mapping at construction time.

This patch eliminate TargetRegisterInfo from TargetAsmInfo. It's another step
towards fixing the layering violation.

llvm-svn: 135424
2011-07-18 20:57:22 +00:00
Evan Cheng
9e8f90a020 Rename createAsmInfo to createMCAsmInfo and move registration code to MCTargetDesc to prepare for next round of changes.
llvm-svn: 135219
2011-07-14 23:50:31 +00:00
Evan Cheng
3d2be55d6c Unfortunately several files in MC are badly violating layering rule by using
TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are
other cases of violations, but this is probably the worst.

This patch is but one small step towards fixing this. 500 more steps to go. :-(

llvm-svn: 135131
2011-07-14 05:43:07 +00:00
Cameron Zwarich
583fdfe4ff Fix LTO after the recent MC subtarget refactoring.
llvm-svn: 134930
2011-07-11 22:19:51 +00:00
Evan Cheng
c9e252df68 Change createAsmParser to take a MCSubtargetInfo instead of triple,
CPU, and feature string. Parsing some asm directives can change
subtarget state (e.g. .code 16) and it must be reflected in other
modules (e.g. MCCodeEmitter). That is, the MCSubtargetInfo instance
must be shared.

llvm-svn: 134795
2011-07-09 05:47:46 +00:00
Evan Cheng
50f2d8d304 Eliminate asm parser's dependency on TargetMachine:
- Each target asm parser now creates its own MCSubtatgetInfo (if needed).
- Changed AssemblerPredicate to take subtarget features which tablegen uses
  to generate asm matcher subtarget feature queries. e.g.
  "ModeThumb,FeatureThumb2" is translated to
  "(Bits & ModeThumb) != 0 && (Bits & FeatureThumb2) != 0".

llvm-svn: 134678
2011-07-08 01:53:10 +00:00
Evan Cheng
034261674b Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to
be the first encoded as the first feature. It then uses the CPU name to look up
features / scheduling itineray even though clients know full well the CPU name
being used to query these properties.

The fix is to just have the clients explictly pass the CPU name!

llvm-svn: 134127
2011-06-30 01:53:36 +00:00
Evan Cheng
b4dc8bdd22 Sink SubtargetFeature and TargetInstrItineraries (renamed MCInstrItineraries) into MC.
llvm-svn: 134049
2011-06-29 01:14:12 +00:00
Chad Rosier
6a40804696 Reinstate r133516 "Remove some unnecessary uses of c_str()." A trailing null
character in std::string was causing failures for a few ObjC and Obj-C++ tests
when -flto was enabled.  Revision 133999 resolved this issue. Thanks Jay!
rdar://9685235
PR10210

llvm-svn: 134017
2011-06-28 18:26:12 +00:00
Jay Foad
fa97b8b8fa PR10210: New method ConstantArray::getAsCString(). Use it in LTO to
avoid getting embedded trailing null bytes in std::strings.

llvm-svn: 133999
2011-06-28 08:24:19 +00:00
Chad Rosier
c4a49e5afd Revert r133516 "Remove some unnecessary uses of c_str()."
This was causing compile-time failures for some of the Objc and Obj-C++
benchmarks.  The specific errors were of the form: "ld: duplicate symbol …"
rdar://9660124

llvm-svn: 133955
2011-06-27 22:54:29 +00:00
Jay Foad
ea4f714a73 Remove some unnecessary uses of c_str().
llvm-svn: 133516
2011-06-21 15:36:24 +00:00
Rafael Espindola
2f2c3bf31f Simplify the handling of pcrel relocations on ELF. Now we do the right thing
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.

This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.

llvm-svn: 130634
2011-05-01 03:50:49 +00:00
Rafael Espindola
856ed14418 Remove unused argument.
llvm-svn: 129955
2011-04-21 23:39:26 +00:00
Nick Lewycky
08fa5e5ed3 Fix typo in comment.
llvm-svn: 129902
2011-04-21 01:54:08 +00:00
Rafael Espindola
b0fe115914 Use lazy parsing in LTO. Unfortunately this is only a 3% time saving for
'ar'. Have to figure out how to make libLTO even lazier.

llvm-svn: 127901
2011-03-18 19:51:00 +00:00
Rafael Espindola
0e189f5304 Simplify the computation of undefined symbols. Instead of walking
functions and initializers, just report the declarations present in
the module.

The motivation is to open the way for using the lazy module parsing,
which should speed up clients that just want a symbol list (nm, ar).

This is slightly less precise, but since both -strip-dead-prototypes
and -globaldce are part of the standard pipeline, this shouldn't
change the result for clang/dragonegg produced binaries.

Any decl in an IL file was also put there because a FE expected it
to be necessary, so this should not be a problem for "-O0 -emit-llvm".

As a sanity check, I have bootstrapped clang on linux and built
firefox on both linux and darwin. A clang bootstrap on darwin
with LTO fails with or without this patch because, ironically,
the linker doesn't like the combination of dead_strip and LTO
when building libLTO.so :-)

llvm-svn: 127870
2011-03-18 05:12:38 +00:00
NAKAMURA Takumi
5327c64434 tools/lto/LTOModule.cpp: Eliminate an unused variable.
llvm-svn: 127859
2011-03-18 03:21:11 +00:00
Rafael Espindola
3ecf930d14 Use RequiresNullTerminator to create buffers without a null terminator
instead of copying.

llvm-svn: 127835
2011-03-17 22:18:42 +00:00
Rafael Espindola
8dab9a762b Add support in the LTO library for loading an object from the middle
of an file.

llvm-svn: 127781
2011-03-17 00:36:11 +00:00
Rafael Espindola
7f301833ee Add a special streamer to libLTO that just records symbols definitions and
uses.

The result produced by the streamer is used to give the linker more accurate
information and to add to llvm.compiler.used. The second improvement removes
the need for the user to add __attribute__((used)) to functions only used in
inline asm. The first one lets us build firefox with LTO on Darwin :-)

llvm-svn: 126830
2011-03-02 04:14:42 +00:00
Rafael Espindola
5a77325398 Fix some memory leaks and avoid looking in the hash tables twice.
libxul links in 7m0.403s.

llvm-svn: 126085
2011-02-20 16:27:25 +00:00
Rafael Espindola
bb94ca00f7 Remove std::string version of getNameWithPrefix.
llvm-svn: 125363
2011-02-11 05:23:09 +00:00
Rafael Espindola
43f9672afa Don't open the file again in the gold plugin. To be able to do this, update
MemoryBuffer::getOpenFile to not close the file descriptor.

llvm-svn: 125128
2011-02-08 22:40:47 +00:00
Rafael Espindola
54673ba6ca Don't tell the linker about available_externally definitions. If we do, it will
complain about duplicated definitions.

llvm-svn: 124634
2011-02-01 00:41:51 +00:00
Michael J. Spencer
86f6a9ac6e MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm.
llvm-svn: 121958
2010-12-16 03:29:14 +00:00
Rafael Espindola
0e665e502d Fixed version of 121434 with no new memory leaks.
llvm-svn: 121471
2010-12-10 07:39:47 +00:00
Rafael Espindola
011e168728 Revert my previous patch to make the valgrind bots happy.
llvm-svn: 121461
2010-12-10 04:01:09 +00:00
Rafael Espindola
03ad1e8f1f 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
Michael J. Spencer
1b2e087ff3 More code not compiled by CMake. :(.
llvm-svn: 121387
2010-12-09 18:06:07 +00:00
Michael J. Spencer
4a63404543 I swear I did a make clean and make before committing all this...
llvm-svn: 120304
2010-11-29 18:47:54 +00:00
Rafael Espindola
749c19f614 Record sysbols created by aliases. Fixes PR8414.
llvm-svn: 116910
2010-10-20 04:57:22 +00:00
Bill Wendling
ef718b99d4 Provide a fast "get me the target triple from the module" API. This can
drastically reduce the linking time during LTO.

Patch by Shantonu Sen!

llvm-svn: 115728
2010-10-06 01:22:42 +00:00
Bill Wendling
3e1b942231 Add a new scope type "LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN" for the
"linker_private_weak_auto_def" linkage type for LTO.

llvm-svn: 114868
2010-09-27 20:17:45 +00:00
Bill Wendling
3dde665cb8 The "linker_private_weak*" linkages should set the LTO_SYMBOL_DEFINITION_WEAK
during LTO.

llvm-svn: 114850
2010-09-27 18:05:19 +00:00
Daniel Dunbar
545b090074 lto: Fix an inverted conditional which prevented the addition of symbols scraped
from inline assembly, except in cases where they had already been seen (in which
case they would get added twice).
 - I can't see how this ever worked...

llvm-svn: 110757
2010-08-11 00:11:19 +00:00
Daniel Dunbar
03b5c17c32 lto: Fix gratuitous memory leaks.
llvm-svn: 110756
2010-08-11 00:11:17 +00:00
Daniel Dunbar
2a4ab7958b lto: Reduce nesting.
llvm-svn: 110752
2010-08-10 23:46:46 +00:00
Daniel Dunbar
e95bd064b5 LTOModule.cpp: Fix numerous style issues.
llvm-svn: 110751
2010-08-10 23:46:39 +00:00
Rafael Espindola
fd90a58cd3 Make it possible to set the target triple and expose that with an option in the
gold plugin.

llvm-svn: 110604
2010-08-09 21:09:46 +00:00