NAKAMURA Takumi [Wed, 29 Jan 2014 06:05:38 +0000 (06:05 +0000)]
Revert r200340, "Add line table debug info to COFF files when using a win32 triple."
It was incompatible with --target=i686-win32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200375
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Rafael Espindola [Wed, 29 Jan 2014 04:56:19 +0000 (04:56 +0000)]
Normalize the style in llvm-nm.cpp.
It had grown fairly inconsistent. I am about to change it quite a bit to also
use the object api when handling IR files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200374
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Venkatraman Govindaraju [Wed, 29 Jan 2014 04:51:35 +0000 (04:51 +0000)]
[Sparc] Use %r_disp32 for pc_rel entries in gcc_except_table and eh_frame.
Otherwise, assembler (gas) fails to assemble them with error message "operation
combines symbols in different segments". This is because MC computes
pc_rel entries with subtract expression between labels from different sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200373
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Chandler Carruth [Wed, 29 Jan 2014 04:40:19 +0000 (04:40 +0000)]
[LPM] Fix PR18642, a pretty nasty bug in IndVars that "never mattered"
because of the inside-out run of LoopSimplify in the LoopPassManager and
the fact that LoopSimplify couldn't be "preserved" across two
independent LoopPassManagers.
Anyways, in that case, IndVars wasn't correctly preserving an LCSSA PHI
node because it thought it was rewriting (via SCEV) the incoming value
to a loop invariant value. While it may well be invariant for the
current loop, it may be rewritten in terms of an enclosing loop's
values. This in and of itself is fine, as the LCSSA PHI node in the
enclosing loop for the inner loop value we're rewriting will have its
own LCSSA PHI node if used outside of the enclosing loop. With me so
far?
Well, the current loop and the enclosing loop may share an exiting
block and exit block, and when they do they also share LCSSA PHI nodes.
In this case, its not valid to RAUW through the LCSSA PHI node.
Expected crazy test included.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200372
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Arnold Schwaighofer [Wed, 29 Jan 2014 04:36:12 +0000 (04:36 +0000)]
LoopVectorizer: Don't count the induction variable multiple times
When estimating register pressure, don't count the induction variable mulitple
times. It is unlikely to be unrolled. This is currently disabled and hidden
behind a flag ("enable-ind-var-reg-heur").
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200371
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Rafael Espindola [Wed, 29 Jan 2014 04:08:05 +0000 (04:08 +0000)]
We do use pipefail these days. Update the test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200370
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Venkatraman Govindaraju [Wed, 29 Jan 2014 03:35:08 +0000 (03:35 +0000)]
[SparcV9] Use correct register class (I64RegClass) to hold the address of _GLOBAL_OFFSET_TABLE_ in sparcv9.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200368
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Rafael Espindola [Wed, 29 Jan 2014 02:30:38 +0000 (02:30 +0000)]
Use a raw_stream to implement the mangler.
This is a bit more convenient for some callers, but more importantly, it is
easier to implement correctly. Doing this removes the patching of already
printed data that was used for fastcall, fixing a crash with private fastcall
symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200367
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Kevin Qin [Wed, 29 Jan 2014 01:57:30 +0000 (01:57 +0000)]
[AArch64 NEON] Lower SELECT_CC with vector operand.
When the scalar compare is between floating point and operands are
vector, we custom lower SELECT_CC to use NEON SIMD compare for
generating less instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200365
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David Woodhouse [Wed, 29 Jan 2014 00:49:28 +0000 (00:49 +0000)]
[ARM] Remove superfluous inline asm mode switch test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200361
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Mark Seaborn [Wed, 29 Jan 2014 00:20:44 +0000 (00:20 +0000)]
Remove unnecessary call to pthread_mutexattr_setpshared()
The default value of this attribute is PTHREAD_PROCESS_PRIVATE, so
there's no point in calling pthread_mutexattr_setpshared() to set
that.
See: http://pubs.opengroup.org/onlinepubs/
9699919799/functions/pthread_mutexattr_getpshared.html
This removes some ifdefs that tend to need to be extended for other
platforms (e.g. for NaCl).
Note that this call was in the first implementation of Mutex, added in
r22403, so it doesn't appear to have been added in response to a
performance problem.
Differential Revision: http://llvm-reviews.chandlerc.com/D2633
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200360
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David Majnemer [Wed, 29 Jan 2014 00:07:39 +0000 (00:07 +0000)]
MC: Clean up error paths in AsmParser::parseMacroArgument
Use an RAII object Instead of inserting a call to
AsmLexer::setSkipSpace(true) in all error paths.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200358
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Rafael Espindola [Wed, 29 Jan 2014 00:02:26 +0000 (00:02 +0000)]
Make createObjectFile's signature a bit less error prone.
This will be better with c++11, but right now file_magic converts to bool,
which makes the api really easy to misuse.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200357
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David Woodhouse [Tue, 28 Jan 2014 23:38:16 +0000 (23:38 +0000)]
[Sparc] Fix breakage in r200345
Oops. Don't do build tests on patches like that with --enable-targets=x86_64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200355
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Rafael Espindola [Tue, 28 Jan 2014 23:36:39 +0000 (23:36 +0000)]
Finish bringing file_type to the llvm style (other than its name).
I assume that the name is file_type because it is the name of a c++11 type that
we will use once we convert, but at least our current implementation can look
like llvm code.
Thanks to David Blakie for the push.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200354
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Nick Kledzik [Tue, 28 Jan 2014 23:25:13 +0000 (23:25 +0000)]
Be more explicit about which overloaded variant to use. Caught by ASan!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200353
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Rafael Espindola [Tue, 28 Jan 2014 23:15:56 +0000 (23:15 +0000)]
Convert to the inner enum so the compiler can warn about it in switches.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200352
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David Woodhouse [Tue, 28 Jan 2014 23:13:30 +0000 (23:13 +0000)]
Tests for mode switching
1. test that inlineasm works
2. test that relaxable instructions are re-encoded in the correct mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200351
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David Woodhouse [Tue, 28 Jan 2014 23:13:25 +0000 (23:13 +0000)]
Delete MCSubtargetInfo data members from target MCCodeEmitter classes
The subtarget info is explicitly passed to the EncodeInstruction
method and we should use that subtarget info to influence any
encoding decisions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200350
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David Woodhouse [Tue, 28 Jan 2014 23:13:18 +0000 (23:13 +0000)]
Propagate MCSubtargetInfo through TableGen's getBinaryCodeForInstr()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200349
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David Woodhouse [Tue, 28 Jan 2014 23:13:07 +0000 (23:13 +0000)]
Explictly pass MCSubtargetInfo to MCCodeEmitter::EncodeInstruction()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200348
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David Woodhouse [Tue, 28 Jan 2014 23:12:53 +0000 (23:12 +0000)]
Keep the MCSubtargetInfo in the MCRelxableFragment class.
Needed to fix PR18303 to correctly re-encode the instruction if it
is relaxed.
We keep a copy of the MCSubtargetInfo to make sure that we are not
effected by future changes to the subtarget info coming from the
assembler (e.g. when parsing .code 16 directived).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200347
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David Woodhouse [Tue, 28 Jan 2014 23:12:49 +0000 (23:12 +0000)]
Modify MCObjectStreamer EmitInstTo* interface
Add MCSubtargetInfo parameter
virtual void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &);
virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &);
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200346
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David Woodhouse [Tue, 28 Jan 2014 23:12:42 +0000 (23:12 +0000)]
Change MCStreamer EmitInstruction interface to take subtarget info
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200345
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Timur Iskhodzhanov [Tue, 28 Jan 2014 21:47:33 +0000 (21:47 +0000)]
Disable the COFF tests on non-X86 archs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200341
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Timur Iskhodzhanov [Tue, 28 Jan 2014 21:33:27 +0000 (21:33 +0000)]
Add line table debug info to COFF files when using a win32 triple.
Reviewed at http://llvm-reviews.chandlerc.com/D2232
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200340
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Owen Anderson [Tue, 28 Jan 2014 19:57:18 +0000 (19:57 +0000)]
Use the proper SDK when building iOS sim builds of LLVM and/or Mac OS X builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200335
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Nick Kledzik [Tue, 28 Jan 2014 19:33:09 +0000 (19:33 +0000)]
fix templates to work with pre c++11
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200333
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Matheus Almeida [Tue, 28 Jan 2014 19:24:11 +0000 (19:24 +0000)]
[mips] Fix ELF header flags.
As opposed to GCC/GAS the default ABI for Mips64 is n64.
Compatibility bit should be set if o32 ABI is used when targeting Mips64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200332
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Nick Kledzik [Tue, 28 Jan 2014 19:21:27 +0000 (19:21 +0000)]
Add BumpPtrAllocator::allocateCopy() utilities
Makes it easy to use BumpPtrAllocator to make a copy of StringRef strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200331
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Gautam Chakrabarti [Tue, 28 Jan 2014 18:35:29 +0000 (18:35 +0000)]
[NVPTX] Fix emitting aggregate parameters
The code was missing the case for aggregate parameters and
hence was emitting them as .b0 type. Also fixed a couple
of comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200325
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Andrea Di Biagio [Tue, 28 Jan 2014 18:14:21 +0000 (18:14 +0000)]
[X86] Add extra rules for combining vselect dag nodes into movsd.
This improves the fix committed at revision 199683 adding the
following new target specific combine rules:
1) fold (v4i32: vselect <0,0,-1,-1>, A, B) ->
(v4i32 (bitcast (movsd (v2i64 (bitcast A)), (v2i64 (bitcast B))) ))
2) fold (v4f32: vselect <0,0,-1,-1>, A, B) ->
(v4f32 (bitcast (movsd (v2f64 (bitcast A)), (v2f64 (bitcast B))) ))
3) fold (v4i32: vselect <-1,-1,0,0>, A, B) ->
(v4i32 (bitcast (movsd (v2i64 (bitcast B)), (v2i64 (bitcast A))) ))
4) fold (v4f32: vselect <-1,-1,0,0>, A, B) ->
(v4f32 (bitcast (movsd (v2i64 (bitcast B)), (v2i64 (bitcast A))) ))
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200324
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Adrian Prantl [Tue, 28 Jan 2014 18:13:47 +0000 (18:13 +0000)]
typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200323
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Rafael Espindola [Tue, 28 Jan 2014 16:56:46 +0000 (16:56 +0000)]
Fix pr14893.
When simplifycfg moves an instruction, it must drop metadata it doesn't know
is still valid with the preconditions changes. In particular, it must drop
the range and tbaa metadata.
The patch implements this with an utility function to drop all metadata not
in a white list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200322
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Aaron Ballman [Tue, 28 Jan 2014 16:07:10 +0000 (16:07 +0000)]
The llvm_headers_do_not_build project needs to be excluded from the default build, otherwise it gets built (at least in Visual Studio 2013).
Thanks to chapuni200000 for help with this in IRC!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200321
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Andrea Di Biagio [Tue, 28 Jan 2014 12:53:56 +0000 (12:53 +0000)]
[DAGCombiner] Avoid introducing an illegal build_vector when folding a sign_extend.
Make sure that we don't introduce illegal build_vector dag nodes
when trying to fold a sign_extend of a build_vector.
This fixes a regression introduced by r200234.
Added test CodeGen/X86/fold-vector-sext-crash.ll
to verify that llc no longer crashes with an assertion failure
due to an illegal build_vector of type MVT::v4i64.
Thanks to Ilia Filippov for spotting this regression and for
providing a reproducible test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200313
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NAKAMURA Takumi [Tue, 28 Jan 2014 11:40:04 +0000 (11:40 +0000)]
[CMake] llvm_update_compile_flags(name) doesn't require source files. TARGET PROPERTY SOURCES has them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200311
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Iain Sandoe [Tue, 28 Jan 2014 11:03:17 +0000 (11:03 +0000)]
Provide a stub Target Streamer implementation for PPC MachO
At present, this handles .tc (error) and needs to be expanded to deal properly with .machine
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200309
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NAKAMURA Takumi [Tue, 28 Jan 2014 09:48:19 +0000 (09:48 +0000)]
[CMake] Prune CMAKE_CXX_FLAGS stuff in llvm_process_sources.
It is the final step to deprecate contextual CMAKE_CXX_FLAGS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200303
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NAKAMURA Takumi [Tue, 28 Jan 2014 09:44:06 +0000 (09:44 +0000)]
[CMake] Enhance llvm_update_compile_flags(name sources) to handle LLVM_REQUIRES_EH and LLVM_REQUIRES_RTTI.
LLVM_REQUIRES_EH implies LLVM_REQUIRES_RTTI. It is as same behavior as Makefile.rule's.
llvm/examples/ExceptionDemo is affected. (It was built with -fno-rtti.)
For MSVC, Remove flags like "/EHsc /GR" in HandleLLVMOptions, or CL.EXE complains with flags like "/GR /GR-".
llvm_update_compile_flags() updates source file property if the target contains *.c.
COMPILE_FLAGS in target properties affects both C++ and C!
LLVM_NO_RTTI is deprecated. It was introduced by me and was my mistake.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200301
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NAKAMURA Takumi [Tue, 28 Jan 2014 09:44:00 +0000 (09:44 +0000)]
[CMake] Apply -ffunction-data-sectinos not only to CMAKE_CXX_FLAGS, but also to CMAKE_C_FLAGS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200300
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NAKAMURA Takumi [Tue, 28 Jan 2014 09:43:55 +0000 (09:43 +0000)]
[CMake] Move -ffunction-data-sections stuff to HandleLLVMOptions.
With this tweaks, also unittests are compiled with -ffunction-sections.
It's hard to control contextual CMAKE_CXX_FLAGS. We should get rid of twiddling it as possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200299
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NAKAMURA Takumi [Tue, 28 Jan 2014 09:43:49 +0000 (09:43 +0000)]
[CMake] Let llvm_process_sources check not only *.cpp but also *.c.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200298
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NAKAMURA Takumi [Tue, 28 Jan 2014 09:43:41 +0000 (09:43 +0000)]
[CMake] Put lli-child-target into the Folder "Misc".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200297
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Chandler Carruth [Tue, 28 Jan 2014 09:10:41 +0000 (09:10 +0000)]
[vectorizer] Completely disable the block frequency guidance of the loop
vectorizer, placing it behind an off-by-default flag.
It turns out that block frequency isn't what we want at all, here or
elsewhere. This has been I think a nagging feeling for several of us
working with it, but Arnold has given some really nice simple examples
where the results are so comprehensively wrong that they aren't useful.
I'm planning to email the dev list with a summary of why its not really
useful and a couple of ideas about how to better structure these types
of heuristics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200294
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Hal Finkel [Tue, 28 Jan 2014 05:32:58 +0000 (05:32 +0000)]
Handle spilling the PPC GPRC_NOR0 register class
GPRC_NOR0 is not a subclass of GPRC (because it also contains the ZERO pseudo
register). As a result, we also need to check for it in the spilling code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200288
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Craig Topper [Tue, 28 Jan 2014 04:49:01 +0000 (04:49 +0000)]
Improve handling of EnforceSmallerThan. Remove all types that are smaller from the larger set not just the smallest type from the smaller set. Ensure 'smaller' vectors have the same or fewer total bits. Similar for 'larger' vectors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200287
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Timur Iskhodzhanov [Tue, 28 Jan 2014 03:48:44 +0000 (03:48 +0000)]
MC: Add a .debug section that we'll soon use to emit debug info into COFF files
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200285
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Michel Danzer [Tue, 28 Jan 2014 03:01:16 +0000 (03:01 +0000)]
R600/SI: Add pattern for truncating i32 to i1
Fixes half a dozen piglit tests with radeonsi.
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200283
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Jakob Stoklund Olesen [Tue, 28 Jan 2014 02:52:26 +0000 (02:52 +0000)]
Fix the DWARF EH encodings for Sparc PIC code.
Also emit the stubs that were generated for references to typeinfo
symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200282
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Reid Kleckner [Tue, 28 Jan 2014 02:38:36 +0000 (02:38 +0000)]
Update optimization passes to handle inalloca arguments
Summary:
I searched Transforms/ and Analysis/ for 'ByVal' and updated those call
sites to check for inalloca if appropriate.
I added tests for any change that would allow an optimization to fire on
inalloca.
Reviewers: nlewycky
Differential Revision: http://llvm-reviews.chandlerc.com/D2449
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200281
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Reid Kleckner [Tue, 28 Jan 2014 02:08:22 +0000 (02:08 +0000)]
x86: add implicit defs for cpuid
This avoids miscompiling MS inline asm in LLVM where we have to infer
clobbers. Test case forthcoming in Clang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200279
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Chandler Carruth [Tue, 28 Jan 2014 01:25:38 +0000 (01:25 +0000)]
[LPM] Fix PR18616 where the shifts to the loop pass manager to extract
LCSSA from it caused a crasher with the LoopUnroll pass.
This crasher is really nasty. We destroy LCSSA form in a suprising way.
When unrolling a loop into an outer loop, we not only need to restore
LCSSA form for the outer loop, but for all children of the outer loop.
This is somewhat obvious in retrospect, but hey!
While this seems pretty heavy-handed, it's not that bad. Fundamentally,
we only do this when we unroll a loop, which is already a heavyweight
operation. We're unrolling all of these hypothetical inner loops as
well, so their size and complexity is already on the critical path. This
is just adding another pass over them to re-canonicalize.
I have a test case from PR18616 that is great for reproducing this, but
pretty useless to check in as it relies on many 10s of nested empty
loops that get unrolled and deleted in just the right order. =/ What's
worse is that investigating this has exposed another source of failure
that is likely to be even harder to test. I'll try to come up with test
cases for these fixes, but I want to get the fixes into the tree first
as they're causing crashes in the wild.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200273
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Juergen Ributzka [Tue, 28 Jan 2014 01:20:14 +0000 (01:20 +0000)]
[TLI] Add a new hook to TargetLowering to query the target if a load of a constant should be converted to simply the constant itself.
Before this patch we used getIntImmCost from TargetTransformInfo to determine if
a load of a constant should be converted to just a constant, but the threshold
for this was set to an arbitrary value. This value works well for the two
targets (X86 and ARM) that implement this target-hook, but it isn't
target-independent at all.
Now targets have the possibility to decide directly if this optimization should
be performed. The default value is set to false to preserve the current
behavior. The target hook has been moved to TargetLowering, which removed the
last use and need of TargetTransformInfo in SelectionDAG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200271
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Arnold Schwaighofer [Tue, 28 Jan 2014 01:01:53 +0000 (01:01 +0000)]
LoopVectorize: Support conditional stores by scalarizing
The vectorizer takes a loop like this and widens all instructions except for the
store. The stores are scalarized/unrolled and hidden behind an "if" block.
for (i = 0; i < 128; ++i) {
if (a[i] < 10)
a[i] += val;
}
for (i = 0; i < 128; i+=2) {
v = a[i:i+1];
v0 = (extract v, 0) + 10;
v1 = (extract v, 1) + 10;
if (v0 < 10)
a[i] = v0;
if (v1 < 10)
a[i] = v1;
}
The vectorizer relies on subsequent optimizations to sink instructions into the
conditional block where they are anticipated.
The flag "vectorize-num-stores-pred" controls whether and how many stores to
handle this way. Vectorization of conditional stores is disabled per default for
now.
This patch also adds a change to the heuristic when the flag
"enable-loadstore-runtime-unroll" is enabled (off by default). It unrolls small
loops until load/store ports are saturated. This heuristic uses TTI's
getMaxUnrollFactor as a measure for load/store ports.
I also added a second flag -enable-cond-stores-vec. It will enable vectorization
of conditional stores. But there is no cost model for vectorization of
conditional stores in place yet so this will not do good at the moment.
rdar://
15892953
Results for x86-64 -O3 -mavx +/- -mllvm -enable-loadstore-runtime-unroll
-vectorize-num-stores-pred=1 (before the BFI change):
Performance Regressions:
Benchmarks/Ptrdist/yacr2/yacr2 7.35% (maze3() is identical but 10% slower)
Applications/siod/siod 2.18%
Performance improvements:
mesa -4.42%
libquantum -4.15%
With a patch that slightly changes the register heuristics (by subtracting the
induction variable on both sides of the register pressure equation, as the
induction variable is probably not really unrolled):
Performance Regressions:
Benchmarks/Ptrdist/yacr2/yacr2 7.73%
Applications/siod/siod 1.97%
Performance Improvements:
libquantum -13.05% (we now also unroll quantum_toffoli)
mesa -4.27%
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200270
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Eric Christopher [Tue, 28 Jan 2014 00:49:26 +0000 (00:49 +0000)]
Revert r199871 and replace it with a simple check in the debug info
code to see if we're emitting a function into a non-default
text section. This is still a less-than-ideal solution, but more
contained than r199871 to determine whether or not we're emitting
code into an array of comdat sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200269
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Eric Christopher [Mon, 27 Jan 2014 23:50:03 +0000 (23:50 +0000)]
Reformat slightly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200264
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Manman Ren [Mon, 27 Jan 2014 23:39:03 +0000 (23:39 +0000)]
PGO branch weight: keep halving the weights until they can fit into
uint32.
When folding branches to common destination, the updated branch weights
can exceed uint32 by more than factor of 2. We should keep halving the
weights until they can fit into uint32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200262
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Mark Seaborn [Mon, 27 Jan 2014 22:53:07 +0000 (22:53 +0000)]
Fix the "#ifndef HAVE_SYS_WAIT_H" code path in Program.inc to compile
Without this fix, WaitResult is not defined.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200259
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Mark Seaborn [Mon, 27 Jan 2014 22:38:14 +0000 (22:38 +0000)]
ARM MC: Fix the initial DWARF CFI unwind info at the start of a function
This brings MC into line with GNU 'as' on ARM, and it brings the ARM
target into line with most other LLVM targets, which declare the
initial CFI state with addInitialFrameState().
Without this, functions generated with .cfi_startproc/endproc on ARM
will tend to cause GDB to abort with:
gdb/dwarf2-frame.c:1132: internal-error: Unknown CFA rule.
I've also tested this by comparing the output of "readelf -w" on the
object files produced by llvm-mc and gas when given the .s file added
here.
This change is part of addressing PR18636.
Differential Revision: http://llvm-reviews.chandlerc.com/D2597
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200255
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Matt Arsenault [Mon, 27 Jan 2014 21:41:54 +0000 (21:41 +0000)]
Fix sext(setcc) -> select_cc using wrong type for setcc.
Also update the comment, since it actually produces a
select (setcc) instead of select_cc.
It was checking and using the setcc result type for the
type of the sext, instead of the type of the compared items.
In my problem case, the sext was to i32 and was used as the setcc type,
but the expected type was i64.
No test since I haven't been able to hit the problem with
this on any in-tree targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200249
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David Peixotto [Mon, 27 Jan 2014 21:39:04 +0000 (21:39 +0000)]
Fix unsupported addressing mode assertion for pld
Summary:
This commit gives an address mode to the PLD instruction. We
were getting an assertion failure in the frame lowering code
because we had code that was doing a pld of a stack allocated
address. The frame lowering was checking the address mode and
then asserting because pld had none defined.
This commit fixes pld for arm mode. There was a previous fix for
thumb mode in a separate commit. The commit for thumb mode
added a test in a separate file because it would otherwise fail
for arm. This commit moves the thumb test back into the prefetch.ll
file and adds the corresponding arm test.
Differential Revision: http://llvm-reviews.chandlerc.com/D2622
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200248
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Gautam Chakrabarti [Mon, 27 Jan 2014 20:03:35 +0000 (20:03 +0000)]
test commit: add minor comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200244
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Andrea Di Biagio [Mon, 27 Jan 2014 18:45:30 +0000 (18:45 +0000)]
[DAGCombiner] Teach how to fold sext/aext/zext of constant build vectors.
This patch teaches the DAGCombiner how to fold a sext/aext/zext dag node when
the operand in input is a build vector of constants (or UNDEFs).
The inability to fold a sext/zext of a constant build_vector was the root
cause of some pcg bugs affecting vselect expansion on x86-64 with AVX support.
Before this change, the DAGCombiner only knew how to fold a sext/zext/aext of a
ConstantSDNode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200234
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Reid Kleckner [Mon, 27 Jan 2014 17:47:11 +0000 (17:47 +0000)]
Silence MSVC warning on 'uint16_t |= bool' with a cast
This isn't C4800, it's C4805. MSVC says this is unsafe, but it
generates correct code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200229
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NAKAMURA Takumi [Mon, 27 Jan 2014 17:39:38 +0000 (17:39 +0000)]
[CMake] Put *_exports into "Misc" folder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200228
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David Majnemer [Mon, 27 Jan 2014 17:20:25 +0000 (17:20 +0000)]
MC: Add support for .cfi_startproc simple
This commit allows LLVM MC to process .cfi_startproc directives when
they are followed by an additional `simple' identifier. This signals to
elide the emission of target specific CFI instructions that would
normally occur initially.
This fixes PR16587.
Differential Revision: http://llvm-reviews.chandlerc.com/D2624
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200227
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Tobias Grosser [Mon, 27 Jan 2014 13:44:58 +0000 (13:44 +0000)]
Do not reference llvm-gcc from bugpoint
Reiterating: llvm-gcc is dead since a long time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200220
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Chandler Carruth [Mon, 27 Jan 2014 13:11:50 +0000 (13:11 +0000)]
[vectorize] Initial version of respecting PGO in the vectorizer: treat
cold loops as-if they were being optimized for size.
Nothing fancy here. Simply test case included. The nice thing is that we
can now incrementally build on top of this to drive other heuristics.
All of the infrastructure work is done to get the profile information
into this layer.
The remaining work necessary to make this a fully general purpose loop
unroller for very hot loops is to make it a fully general purpose loop
unroller. Things I know of but am not going to have time to benchmark
and fix in the immediate future:
1) Don't disable the entire pass when the target is lacking vector
registers. This really doesn't make any sense any more.
2) Teach the unroller at least and the vectorizer potentially to handle
non-if-converted loops. This is trivial for the unroller but hard for
the vectorizer.
3) Compute the relative hotness of the loop and thread that down to the
various places that make cost tradeoffs (very likely only the
unroller makes sense here, and then only when dealing with loops that
are small enough for unrolling to not completely blow out the LSD).
I'm still dubious how useful hotness information will be. So far, my
experiments show that if we can get the correct logic for determining
when unrolling actually helps performance, the code size impact is
completely unimportant and we can unroll in all cases. But at least
we'll no longer burn code size on cold code.
One somewhat unrelated idea that I've had forever but not had time to
implement: mark all functions which are only reachable via the global
constructors rigging in the module as optsize. This would also decrease
the impact of any more aggressive heuristics here on code size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200219
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Benjamin Kramer [Mon, 27 Jan 2014 13:11:43 +0000 (13:11 +0000)]
ConstantHoisting: We can't insert instructions directly in front of a PHI node.
Insert before the terminating instruction of the dominating block instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200218
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Benjamin Kramer [Mon, 27 Jan 2014 11:50:13 +0000 (11:50 +0000)]
XCore: Fix typo in function name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200216
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Chandler Carruth [Mon, 27 Jan 2014 11:41:50 +0000 (11:41 +0000)]
[vectorizer] Add an override for the target instruction cost and use it
to stabilize a test that really is trying to test generic behavior and
not a specific target's behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200215
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Chandler Carruth [Mon, 27 Jan 2014 11:27:37 +0000 (11:27 +0000)]
[vectorizer] Simplify code to use existing helpers on the Function
object and fewer pointless variables.
Also, add a clarifying comment and a FIXME because the code which
disables *all* vectorization if we can't use implicit floating point
instructions just makes no sense at all.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200214
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Chandler Carruth [Mon, 27 Jan 2014 11:12:24 +0000 (11:12 +0000)]
[vectorizer] Teach the loop vectorizer's unroller to only unroll by
powers of two. This is essentially always the correct thing given the
impact on alignment, scaling factors that can be used in addressing
modes, etc. Also, fix the management of the unroll vs. small loop cost
to more accurately model things with this world.
Enhance a test case to actually exercise more of the unroll machinery if
using synthetic constants rather than a specific target model. Before
this change, with the added flags this test will unroll 3 times instead
of either 2 or 4 (the two sensible answers).
While I don't expect this to make a huge difference, if there are lots
of loops sitting right on the edge of hitting the 'small unroll' factor,
they might change behavior. However, I've benchmarked moving the small
loop cost up and down in many various ways and by a huge factor (2x)
without seeing more than 0.2% code size growth. Small adjustments such
as the series that led up here have led to about 1% improvement on some
benchmarks, but it is very close to the noise floor so I mostly checked
that nothing regressed. Let me know if you see bad behavior on other
targets but I don't expect this to be a sufficiently dramatic change to
trigger anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200213
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Chandler Carruth [Mon, 27 Jan 2014 11:12:19 +0000 (11:12 +0000)]
[vectorizer] Add some flags which are useful for conducting experiments
with the unrolling behavior in the loop vectorizer. No functionality
changed at this point.
These are a bit hack-y, but talking with Hal, there doesn't seem to be
a cleaner way to easily experiment with different thresholds here and he
was also interested in them so I wanted to commit them. Suggestions for
improvement are very welcome here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200212
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Chandler Carruth [Mon, 27 Jan 2014 11:12:14 +0000 (11:12 +0000)]
[vectorizer] Fix a trivial oversight where we always requested the
number of vector registers rather than toggling between vector and
scalar register number based on VF. I don't have a test case as
I spotted this by inspection and on X86 it only makes a difference if
your target is lacking SSE and thus has *no* vector registers.
If someone wants to add a test case for this for ARM or somewhere else
where this is more significant, that would be awesome.
Also made the variable name a bit more sensible while I'm here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200211
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Nick Lewycky [Mon, 27 Jan 2014 10:47:44 +0000 (10:47 +0000)]
Fix crasher introduced in r200203 and caught by a libc++ buildbot. Don't assume that getMulExpr returns a SCEVMulExpr, it may have simplified it to something else!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200210
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Nick Lewycky [Mon, 27 Jan 2014 10:04:03 +0000 (10:04 +0000)]
Teach SCEV to handle more cases of 'and X, CST', specifically where CST is any number of contiguous 1 bits in a row, with any number of leading and trailing 0 bits.
Unfortunately, this in turn led to some lower quality SCEVs due to some different paths through expression simplification, so add getUDivExactExpr and use it. This fixes all instances of the problems that I found, but we can make that function smarter as necessary.
Merge test "xor-and.ll" into "and-xor.ll" since I needed to update it anyways. Test 'nsw-offset.ll' analyzes a little deeper, %n now gets a scev in terms of %no instead of a SCEVUnknown.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200203
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Stepan Dyatkovskiy [Mon, 27 Jan 2014 09:43:10 +0000 (09:43 +0000)]
Additional fix for 200201: due to dependence on bitwidth test was moved to X86 directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200202
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Stepan Dyatkovskiy [Mon, 27 Jan 2014 09:18:31 +0000 (09:18 +0000)]
Fix for PR18102.
Issue outcomes from DAGCombiner::MergeConsequtiveStores, more precisely from
mem-ops sequence sorting.
Consider, how MergeConsequtiveStores works for next example:
store i8 1, a[0]
store i8 2, a[1]
store i8 3, a[1] ; a[1] again.
return ; DAG starts here
1. Method will collect all the 3 stores.
2. It sorts them by distance from the base pointer (farthest with highest
index).
3. It takes first consecutive non-overlapping stores and (if possible) replaces
them with a single store instruction.
The point is, we can't determine here which 'store' instruction
would be the second after sorting ('store 2' or 'store 3').
It happens that 'store 3' would be the second, and 'store 2' would be the third.
So after merging we have the next result:
store i16 (1 | 3 << 8), base ; is a[0] but bit-casted to i16
store i8 2, a[1]
So actually we swapped 'store 3' and 'store 2' and got wrong contents in a[1].
Fix: In sort routine just also take into account mem-op sequence number.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200201
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Chandler Carruth [Mon, 27 Jan 2014 08:17:58 +0000 (08:17 +0000)]
[vectorizer] Clean up the handling of unvectorized loop unrolling in the
LoopVectorize pass.
The logic here doesn't make much sense. We *only* unrolled if the
unvectorized loop was a reduction loop with a single basic block *and*
small loop body. The reduction part in particular doesn't make much
sense. Instead, if we just fall through to the vectorized unroll logic
it makes more sense of unrolling if there is a vectorized reduction that
could be hacked on by the SLP vectorizer *or* if the loop is small.
This is mostly a cleanup and nothing in the test suite really exercises
this, but I did run benchmarks across this change and saw no really
significant changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200198
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Michel Danzer [Mon, 27 Jan 2014 07:20:51 +0000 (07:20 +0000)]
R600/SI: Add intrinsic for BUFFER_LOAD_DWORD* instructions
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200196
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Michel Danzer [Mon, 27 Jan 2014 07:20:44 +0000 (07:20 +0000)]
R600/SI: Add intrinsic for S_SENDMSG instruction
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200195
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Alp Toker [Mon, 27 Jan 2014 05:24:39 +0000 (05:24 +0000)]
Roll back the ConstStringRef change for now
There are a couple of interesting things here that we want to check over
(particularly the expecting asserts in StringRef) and get right for general use
in ADT so hold back on this one. For clang we have a workable templated
solution to use in the meanwhile.
This reverts commit r200187.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200194
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Rafael Espindola [Mon, 27 Jan 2014 04:33:11 +0000 (04:33 +0000)]
Print .mask and .fmask with the target streamer.
Testing this also found the missing '\n' after .frame that this patch also
fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200192
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Rui Ueyama [Mon, 27 Jan 2014 04:22:24 +0000 (04:22 +0000)]
Rename IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA.
editbin.exe and link.exe both accepts /highentropyva option to set this bit, so
doing s/VIRTUAL_ADDRESS/VA/ should make sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200191
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Alp Toker [Mon, 27 Jan 2014 04:07:36 +0000 (04:07 +0000)]
Move true/false StringRef helper to StringExtras
StringRef is a low-level data wrapper that shouldn't know about language
strings like 'true' and 'false' whereas StringExtras is just the place for
higher-level utilities.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200188
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Alp Toker [Mon, 27 Jan 2014 04:07:17 +0000 (04:07 +0000)]
StringRef: Extend constexpr capabilities and introduce ConstStringRef
(1) Add llvm_expect(), an asserting macro that can be evaluated as a constexpr
expression as well as a runtime assert or compiler hint in release builds. This
technique can be used to construct functions that are both unevaluated and
compiled depending on usage.
(2) Update StringRef using llvm_expect() to preserve runtime assertions while
extending the same checks to static asserts in C++11 builds that support the
feature.
(3) Introduce ConstStringRef, a strong subclass of StringRef that references
compile-time constant strings. It's convertible to, but not from, ordinary
StringRef and thus can be used to add compile-time safety to various interfaces
in LLVM and clang that only accept fixed inputs such as diagnostic format
strings that tend to get misused.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200187
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Rafael Espindola [Mon, 27 Jan 2014 03:53:56 +0000 (03:53 +0000)]
Print .frame via the target streamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200186
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Kevin Qin [Mon, 27 Jan 2014 02:53:54 +0000 (02:53 +0000)]
[AArch64 NEON] Try to generate CONCAT_VECTOR when lowering BUILD_VECTOR or SHUFFLE_VECTOR.
Replace r199791.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200180
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Kevin Qin [Mon, 27 Jan 2014 02:53:41 +0000 (02:53 +0000)]
Revert r199791.
It's old version which has some bugs. I'll commit lattest patch soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200179
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Rafael Espindola [Mon, 27 Jan 2014 01:33:33 +0000 (01:33 +0000)]
Use SwitchSection in MipsAsmPrinter::EmitStartOfAsmFile.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200178
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Rafael Espindola [Mon, 27 Jan 2014 00:47:51 +0000 (00:47 +0000)]
Remove dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200174
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Rafael Espindola [Mon, 27 Jan 2014 00:19:41 +0000 (00:19 +0000)]
Add back spaces I missed in the conversion to emitRawComments.
Sorry about that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200171
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Rafael Espindola [Mon, 27 Jan 2014 00:16:00 +0000 (00:16 +0000)]
Use emitRawComment instead of EmitRawText.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200170
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Rafael Espindola [Mon, 27 Jan 2014 00:08:17 +0000 (00:08 +0000)]
Add missing file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200169
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Rafael Espindola [Sun, 26 Jan 2014 23:57:05 +0000 (23:57 +0000)]
Add a XCoreTargetStreamer and port over the simple uses of EmitRawText.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200167
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Saleem Abdulrasool [Sun, 26 Jan 2014 22:55:02 +0000 (22:55 +0000)]
MC: fix test locations/name
Placed the MC variant diagnostics in the wrong directory accidentally. Move
them into their respective architecture specific directories.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200161
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Saleem Abdulrasool [Sun, 26 Jan 2014 22:29:50 +0000 (22:29 +0000)]
ARM: improve diagnostics for .word directive
If a complex expression was passed to the .word directive and the first part of
the directive failed to parse, a secondary diagnostic would be produced that
would clutter the error diagnostics. Improve the diagnostics by consuming the
remainder of the statement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200160
91177308-0d34-0410-b5e6-
96231b3b80d8
Saleem Abdulrasool [Sun, 26 Jan 2014 22:29:43 +0000 (22:29 +0000)]
AsmParser: improve diagnostics for invalid variants
An emitted diagnostic for an invalid relocation variant would place the caret on
the token following the relocation variant indicator or at the end of the line
if there was no following token. This change corrects the placement of the
caret to point to the token.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200159
91177308-0d34-0410-b5e6-
96231b3b80d8