Commit Graph

99802 Commits

Author SHA1 Message Date
Saleem Abdulrasool f12260caf1 tools: repair Windows build
exp2 is not available on Windows.  Fortunately, we are calculating powers of 2
with expontents within the range of [4,12].  Simply use an equivalent bitshift
operation to repair compilation with MSVC which does not provide this standard
function.

llvm-svn: 200454
2014-01-30 05:20:31 +00:00
Jakob Stoklund Olesen ef1d59a175 Implement SPARCv9 atomic_swap_64 with a pseudo.
The SWAP instruction only exists in a 32-bit variant, but the 64-bit
atomic swap can be implemented in terms of CASX, like the other atomic
rmw primitives.

llvm-svn: 200453
2014-01-30 04:48:46 +00:00
Saleem Abdulrasool 4c4789be5e ARM IAS: support .object_arch
The .object_arch directive indicates an alternative architecture to be specified
in the object file.  The directive does *not* effect the enabled feature bits
for the object file generation.  This is particularly useful when the code
performs runtime detection and would like to indicate a lower architecture as
the requirements than the actual instructions used.

llvm-svn: 200451
2014-01-30 04:46:41 +00:00
Saleem Abdulrasool 15d16d809b tools: add support for decoding ARM attributes
Enhance the ARM specific parsing support in llvm-readobj to support attributes.
This allows for simpler tests to validate encoding of the build attributes as
specified in the ARM ELF specification.

llvm-svn: 200450
2014-01-30 04:46:33 +00:00
Saleem Abdulrasool 5d962d31f1 ARM IAS: support .movsp
.movsp is an ARM unwinding directive that indicates to the unwinder that a
register contains an offset from the current stack pointer.  If the offset is
unspecified, it defaults to zero.

llvm-svn: 200449
2014-01-30 04:46:24 +00:00
Saleem Abdulrasool 56e06e8640 ARM: suuport .tlsdescseq directive
This enhances the ARMAsmParser to handle .tlsdescseq directives.  This is a
slightly special relocation.  We must be able to generate them, but not consume
them in assembly.  The relocation is meant to assist the linker in generating a
TLS descriptor sequence.  The ELF target streamer is enhanced to append
additional fixups into the current segment and that is used to emit the new
R_ARM_TLS_DESCSEQ relocations.

llvm-svn: 200448
2014-01-30 04:02:47 +00:00
Saleem Abdulrasool a3f12bdeec ARM: support TLS descriptor relocations
Add support for tlsdesc relocations which are part of the ABI, marked as
experimental.  These relocations permit the linker to perform TLS reference
optimizations.

llvm-svn: 200447
2014-01-30 04:02:38 +00:00
Saleem Abdulrasool 6e00ca887e ARM: support tlscall relocations
This adds support for TLS CALL relocations.  TLS CALL relocations are used to
indicate to the linker to generate appropriate entries to resolve TLS references
via an appropriate function invocation (e.g. __tls_get_addr(PLT)).

In order to accomodate the linker relaxation of the TLS access model for the
references (GD/LD -> IE, IE -> LE), the relocation addend must be incomplete.
This requires that the partial inplace value is also incomplete (i.e. 0).  We
simply avoid the offset value calculation at the time of the fixup adjustment in
the ARM assembler backend.

llvm-svn: 200446
2014-01-30 04:02:31 +00:00
Juergen Ributzka f6f0ce903e Revert "[Stackmaps] Record the stack size of each function that contains a stackmap/patchpoint intrinsic."
This reverts commit r200444 to unbreak buildbots.

llvm-svn: 200445
2014-01-30 03:34:02 +00:00
Juergen Ributzka aece7583a7 [Stackmaps] Record the stack size of each function that contains a stackmap/patchpoint intrinsic.
Reviewed by Andy

llvm-svn: 200444
2014-01-30 03:06:14 +00:00
Rafael Espindola 5e812afaeb Simplify the handling of iterators in ObjectFile.
None of the object file formats reported error on iterator increment. In
retrospect, that is not too surprising: no object format stores symbols or
sections in a linked list or other structure that requires chasing pointers.
As a consequence, all error checking can be done on begin() and end().

This reduces the text segment of bin/llvm-readobj in my machine from 521233 to
518526 bytes.

llvm-svn: 200442
2014-01-30 02:49:50 +00:00
Juergen Ributzka 980f2dc4fc Extend the preserve_most/all calling convention description in LangRef about the
fact that the argument registers will be preserved too.

llvm-svn: 200441
2014-01-30 02:39:00 +00:00
Timur Iskhodzhanov f166f6c8d0 Reland r200340 - 'Add line table debug info to COFF files when using a win32 triple'
This incorporates a couple of fixes reviewed at http://llvm-reviews.chandlerc.com/D2651

llvm-svn: 200440
2014-01-30 01:39:17 +00:00
Rafael Espindola 3aa05e40cf add a bunch of LLVM_OVERRIDE before I start refactoring these.
llvm-svn: 200439
2014-01-30 01:17:42 +00:00
Rafael Espindola f48f13527e Remove dead code.
llvm-svn: 200436
2014-01-30 01:10:21 +00:00
Manman Ren 7407e0e31c Revert r200431 due to bot failures.
llvm-svn: 200434
2014-01-30 00:53:27 +00:00
Rafael Espindola 9fa52155a9 Fix TLS handling in ELF's getAddress and llvm-nm to print 'D' for it.
llvm-svn: 200433
2014-01-30 00:42:30 +00:00
Manman Ren 104e0c80cc PGO branch weight: update edge weights in SelectionDAGBuilder.
When converting from "or + br" to two branches, or converting from
"and + br" to two branches, we correctly update the edge weights of
the two branches.

llvm-svn: 200431
2014-01-30 00:24:37 +00:00
Manman Ren b681918ddd PGO branch weight: update edge weights in IfConverter.
This commit only handles IfConvertTriangle. To update edge weights
of a successor, one interface is added to MachineBasicBlock:
/// Set successor weight of a given iterator.
setSuccWeight(succ_iterator I, uint32_t weight)

An existing testing case test/CodeGen/Thumb2/v8_IT_5.ll is updated,
since we now correctly update the edge weights, the cold block
is placed at the end of the function and we jump to the cold block.

llvm-svn: 200428
2014-01-29 23:18:47 +00:00
Eric Christopher 1a97215050 Move range handling for a function to endFunction rather than
when we create the subprogram DIE.

llvm-svn: 200426
2014-01-29 23:05:43 +00:00
Eric Christopher 8873adaa60 If we use DW_AT_ranges we need to specify a base address that ranges
are relative to in the compile unit. Currently let's just use 0...

Thanks to Greg Clayton for the catch!

llvm-svn: 200425
2014-01-29 22:22:56 +00:00
Eric Christopher fb8dd0085e Turn on CU ranges if we've got multiple compile units in the same
module since there's no range guarantee that we could make given
output order. This also fixes up the testcases that have multiple
CUs to have the correct range offset.

llvm-svn: 200422
2014-01-29 22:06:27 +00:00
Eric Christopher 179fba19fa Make the compile unit map a MapVector so that we can assume a stable
output ordering.

llvm-svn: 200421
2014-01-29 22:06:23 +00:00
Eric Christopher 95531b6969 Fix formatting of comment.
llvm-svn: 200420
2014-01-29 22:06:21 +00:00
Justin Bogner b35695869a llvm-cov: Accept the long forms of gcov options
This is a bit imperfect, as these options don't show up in the help as
is and single dash variants are accepted, which differs from gcov.
Unfortunately, this seems to be as good as it gets with the cl::opt
machinery, so it'll do as an incremental step.

llvm-svn: 200419
2014-01-29 21:31:47 +00:00
Justin Bogner 84e7a35ca8 llvm-cov: Improve help message text
This Properly capitalizes and clarifies the help output from
llvm-cov. It also puts the llvm-only / non-gcov-compatible options in
their own category.

llvm-svn: 200418
2014-01-29 21:31:45 +00:00
Justin Bogner a99a3902a5 llvm-cov: Expect a source file as a positional parameter
Currently, llvm-cov isn't command-line compatible with gcov, which
accepts a source file name as its first parameter and infers the gcno
and gcda file names from that. This change keeps our -gcda and -gcno
options available for convenience in overriding this behaviour, but
adds the required parameter and inference behaviour as a compatible
default.

llvm-svn: 200417
2014-01-29 21:31:34 +00:00
Jordan Rose d2ad22ae41 Remove C++11ism from r200407.
Oops!

llvm-svn: 200412
2014-01-29 19:14:23 +00:00
David Majnemer 91fc4c2169 MC: Better management of macro arguments
The linux kernel makes uses of a GAS `feature' which substitutes nothing
for macro arguments which aren't specified.

Proper support for these kind of macro arguments necessitated a cleanup of
differences between `GAS' and `Darwin' dialect macro processing.

Differential Revision: http://llvm-reviews.chandlerc.com/D2634

llvm-svn: 200409
2014-01-29 18:57:46 +00:00
Arnold Schwaighofer 85a26704e9 LoopVectorizer: Add a test case for unrolling of small loops that need a runtime
check.

llvm-svn: 200408
2014-01-29 18:55:44 +00:00
Jordan Rose c25b0c7e12 [CommandLine] Aliases require an value if their target requires a value.
This can still be overridden by explicitly setting a value requirement on the
alias option, but by default it should be the same.

PR18649

llvm-svn: 200407
2014-01-29 18:54:17 +00:00
Lang Hames 2cbbdf41c0 Add support for PC-relative non-extern relocations to RuntimeDyldMachO.
Also replaces testcase for r180790 (support for absolute non-externs relocs)
with a more robust version.

<rdar://problem/15864721>

llvm-svn: 200404
2014-01-29 18:31:35 +00:00
Quentin Colombet 9e16c8ac8a [X86][SchedModel] Fix typos in the definitions of the ports for Haswell.
llvm-svn: 200403
2014-01-29 18:26:59 +00:00
Oliver Stannard 8f85994aca Test commit
llvm-svn: 200401
2014-01-29 16:01:24 +00:00
Matheus Almeida ec079d9e1d [mips][msa] Add fill.d instruction.
This instruction is only available on Mips64 cores
that implement the MSA ASE.

llvm-svn: 200400
2014-01-29 15:12:02 +00:00
Matheus Almeida 4cb577c614 [mips][msa] CHECK-DAG-ize MSA 2r_vector_scalar.ll test.
This update is a preparation for the addition of Mips64 MSA tests.

No functional changes.

llvm-svn: 200399
2014-01-29 14:32:03 +00:00
Matheus Almeida 74070327b2 [mips][msa] Add copy_{u,s}.d.
These instructions are only available on Mips64 cores
that implement the MSA ASE.

llvm-svn: 200398
2014-01-29 14:05:28 +00:00
Matheus Almeida a64f0600f3 [mips][msa] CHECK-DAG-ize MSA elm_copy.ll test.
This update is a preparation for the addition of Mips64 MSA tests.

No functional changes.

llvm-svn: 200395
2014-01-29 13:51:34 +00:00
Chandler Carruth d4be9dc02d [LPM] Fix PR18643, another scary place where loop transforms failed to
preserve loop simplify of enclosing loops.

The problem here starts with LoopRotation which ends up cloning code out
of the latch into the new preheader it is buidling. This can create
a new edge from the preheader into the exit block of the loop which
breaks LoopSimplify form. The code tries to fix this by splitting the
critical edge between the latch and the exit block to get a new exit
block that only the latch dominates. This sadly isn't sufficient.

The exit block may be an exit block for multiple nested loops. When we
clone an edge from the latch of the inner loop to the new preheader
being built in the outer loop, we create an exiting edge from the outer
loop to this exit block. Despite breaking the LoopSimplify form for the
inner loop, this is fine for the outer loop. However, when we split the
edge from the inner loop to the exit block, we create a new block which
is in neither the inner nor outer loop as the new exit block. This is
a predecessor to the old exit block, and so the split itself takes the
outer loop out of LoopSimplify form. We need to split every edge
entering the exit block from inside a loop nested more deeply than the
exit block in order to preserve all of the loop simplify constraints.

Once we try to do that, a problem with splitting critical edges
surfaces. Previously, we tried a very brute force to update LoopSimplify
form by re-computing it for all exit blocks. We don't need to do this,
and doing this much will sometimes but not always overlap with the
LoopRotate bug fix. Instead, the code needs to specifically handle the
cases which can start to violate LoopSimplify -- they aren't that
common. We need to see if the destination of the split edge was a loop
exit block in simplified form for the loop of the source of the edge.
For this to be true, all the predecessors need to be in the exact same
loop as the source of the edge being split. If the dest block was
originally in this form, we have to split all of the deges back into
this loop to recover it. The old mechanism of doing this was
conservatively correct because at least *one* of the exiting blocks it
rewrote was the DestBB and so the DestBB's predecessors were fixed. But
this is a much more targeted way of doing it. Making it targeted is
important, because ballooning the set of edges touched prevents
LoopRotate from being able to split edges *it* needs to split to
preserve loop simplify in a coherent way -- the critical edge splitting
would sometimes find the other edges in need of splitting but not
others.

Many, *many* thanks for help from Nick reducing these test cases
mightily. And helping lots with the analysis here as this one was quite
tricky to track down.

llvm-svn: 200393
2014-01-29 13:16:53 +00:00
Evgeniy Stepanov 98f4ecfb58 Remove -arm-enable-ehabi from Android build rules. It's enabled by default.
llvm-svn: 200391
2014-01-29 12:36:18 +00:00
Renato Golin bfcefb39db Document EHABI enabled by default
llvm-svn: 200390
2014-01-29 12:04:13 +00:00
Renato Golin 8cea6e8fc6 Enable EHABI by default
After all hard work to implement the EHABI and with the test-suite
passing, it's time to turn it on by default and allow users to
disable it as a work-around while we fix the eventual bugs that show
up.

This commit also remove the -arm-enable-ehabi-descriptors, since we
want the tables to be printed every time the EHABI is turned on
for non-Darwin ARM targets.

Although MCJIT EHABI is not working yet (needs linking with the right
libraries), this commit also fixes some relocations on MCJIT regarding
the EH tables/lib calls, and update some tests to avoid using EH tables
when none are needed.

The EH tests in the test-suite that were previously disabled on ARM
now pass with these changes, so a follow-up commit on the test-suite
will re-enable them.

llvm-svn: 200388
2014-01-29 11:50:56 +00:00
David Majnemer ad5c1734e2 MC: Reorganize macro MC test along dialect lines
This commit seeks to do two things:
 - Run the surfeit of tests under the Darwin dialect.  This ends up
   affecting tests which assumed that spaces could deliminate arguments.
 - The GAS dialect tests should limit their surface area to things that
   could plausibly work under GAS. For example, Darwin style arguments
   have no business being in such a test.

llvm-svn: 200383
2014-01-29 09:18:43 +00:00
Kostya Serebryany 6e15ec1442 [asan] simplify a test
llvm-svn: 200378
2014-01-29 07:35:43 +00:00
Craig Topper 0d16d2dc31 Delete the Matchers stored in the SmallVectors in SwitchOpcodeMatcher/SwitchTypeMatcher.
llvm-svn: 200377
2014-01-29 07:06:07 +00:00
Venkatraman Govindaraju 141d0e2221 [Sparc] Use %r_disp32 for pc_rel entries in FDE as well.
This makes MCAsmInfo::getExprForFDESymbol() a virtual function and overrides it in SparcMCAsmInfo.

llvm-svn: 200376
2014-01-29 06:59:20 +00:00
NAKAMURA Takumi b366f01f83 Revert r200340, "Add line table debug info to COFF files when using a win32 triple."
It was incompatible with --target=i686-win32.

llvm-svn: 200375
2014-01-29 06:05:38 +00:00
Rafael Espindola 619581c3c9 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.

llvm-svn: 200374
2014-01-29 04:56:19 +00:00
Venkatraman Govindaraju fd5c1f9497 [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.

llvm-svn: 200373
2014-01-29 04:51:35 +00:00
Chandler Carruth 66f0b16360 [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.

llvm-svn: 200372
2014-01-29 04:40:19 +00:00
Arnold Schwaighofer 1aab75ab49 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").

llvm-svn: 200371
2014-01-29 04:36:12 +00:00
Rafael Espindola 7a578026ae We do use pipefail these days. Update the test.
llvm-svn: 200370
2014-01-29 04:08:05 +00:00
Venkatraman Govindaraju 50f32d949b [SparcV9] Use correct register class (I64RegClass) to hold the address of _GLOBAL_OFFSET_TABLE_ in sparcv9.
llvm-svn: 200368
2014-01-29 03:35:08 +00:00
Rafael Espindola 310f501ef0 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.

llvm-svn: 200367
2014-01-29 02:30:38 +00:00
Kevin Qin 92d64d2d56 [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.

llvm-svn: 200365
2014-01-29 01:57:30 +00:00
David Woodhouse 21bfc71752 [ARM] Remove superfluous inline asm mode switch test
llvm-svn: 200361
2014-01-29 00:49:28 +00:00
Mark Seaborn efe919ff8a 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

llvm-svn: 200360
2014-01-29 00:20:44 +00:00
David Majnemer 1625245b68 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.

llvm-svn: 200358
2014-01-29 00:07:39 +00:00
Rafael Espindola c3ceeb6fa7 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.

llvm-svn: 200357
2014-01-29 00:02:26 +00:00
David Woodhouse a86694ca7a [Sparc] Fix breakage in r200345
Oops. Don't do build tests on patches like that with --enable-targets=x86_64

llvm-svn: 200355
2014-01-28 23:38:16 +00:00
Rafael Espindola cbf1a809c3 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.

llvm-svn: 200354
2014-01-28 23:36:39 +00:00
Nick Kledzik c80ff7d4b0 Be more explicit about which overloaded variant to use. Caught by ASan!
llvm-svn: 200353
2014-01-28 23:25:13 +00:00
Rafael Espindola 7854f804d6 Convert to the inner enum so the compiler can warn about it in switches.
llvm-svn: 200352
2014-01-28 23:15:56 +00:00
David Woodhouse 7db3705f9e Tests for mode switching
1. test that inlineasm works
2. test that relaxable instructions are re-encoded in the correct mode.

llvm-svn: 200351
2014-01-28 23:13:30 +00:00
David Woodhouse d2cca113df 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.

llvm-svn: 200350
2014-01-28 23:13:25 +00:00
David Woodhouse 3fa98a65e9 Propagate MCSubtargetInfo through TableGen's getBinaryCodeForInstr()
llvm-svn: 200349
2014-01-28 23:13:18 +00:00
David Woodhouse 9784cef38d Explictly pass MCSubtargetInfo to MCCodeEmitter::EncodeInstruction()
llvm-svn: 200348
2014-01-28 23:13:07 +00:00
David Woodhouse f5199f68f2 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).

llvm-svn: 200347
2014-01-28 23:12:53 +00:00
David Woodhouse 6f3c73f7df Modify MCObjectStreamer EmitInstTo* interface
Add MCSubtargetInfo parameter
virtual void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &);
virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &);

llvm-svn: 200346
2014-01-28 23:12:49 +00:00
David Woodhouse e6c13e4abd Change MCStreamer EmitInstruction interface to take subtarget info
llvm-svn: 200345
2014-01-28 23:12:42 +00:00
Timur Iskhodzhanov 7523743075 Disable the COFF tests on non-X86 archs
llvm-svn: 200341
2014-01-28 21:47:33 +00:00
Timur Iskhodzhanov 2c659648b3 Add line table debug info to COFF files when using a win32 triple.
Reviewed at http://llvm-reviews.chandlerc.com/D2232

llvm-svn: 200340
2014-01-28 21:33:27 +00:00
Owen Anderson 5c65e7f345 Use the proper SDK when building iOS sim builds of LLVM and/or Mac OS X builds.
llvm-svn: 200335
2014-01-28 19:57:18 +00:00
Nick Kledzik b0be8687b9 fix templates to work with pre c++11
llvm-svn: 200333
2014-01-28 19:33:09 +00:00
Matheus Almeida 2e03f24301 [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.

llvm-svn: 200332
2014-01-28 19:24:11 +00:00
Nick Kledzik 15bcb9dc42 Add BumpPtrAllocator::allocateCopy() utilities
Makes it easy to use BumpPtrAllocator to make a copy of StringRef strings.

llvm-svn: 200331
2014-01-28 19:21:27 +00:00
Gautam Chakrabarti 2c283400f9 [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.

llvm-svn: 200325
2014-01-28 18:35:29 +00:00
Andrea Di Biagio 2ea61f17ad [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))) ))

llvm-svn: 200324
2014-01-28 18:14:21 +00:00
Adrian Prantl c67655a7f4 typo
llvm-svn: 200323
2014-01-28 18:13:47 +00:00
Rafael Espindola ab73c493ea 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.

llvm-svn: 200322
2014-01-28 16:56:46 +00:00
Aaron Ballman 6eca4eff19 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!

llvm-svn: 200321
2014-01-28 16:07:10 +00:00
Andrea Di Biagio b6d39afbda [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.

llvm-svn: 200313
2014-01-28 12:53:56 +00:00
NAKAMURA Takumi b524c2227e [CMake] llvm_update_compile_flags(name) doesn't require source files. TARGET PROPERTY SOURCES has them.
llvm-svn: 200311
2014-01-28 11:40:04 +00:00
Iain Sandoe 625b65a90c 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

llvm-svn: 200309
2014-01-28 11:03:17 +00:00
NAKAMURA Takumi 00d0a2a90d [CMake] Prune CMAKE_CXX_FLAGS stuff in llvm_process_sources.
It is the final step to deprecate contextual CMAKE_CXX_FLAGS.

llvm-svn: 200303
2014-01-28 09:48:19 +00:00
NAKAMURA Takumi a679f43f4e [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.

llvm-svn: 200301
2014-01-28 09:44:06 +00:00
NAKAMURA Takumi e20725b8da [CMake] Apply -ffunction-data-sectinos not only to CMAKE_CXX_FLAGS, but also to CMAKE_C_FLAGS.
llvm-svn: 200300
2014-01-28 09:44:00 +00:00
NAKAMURA Takumi bb50bceb06 [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.

llvm-svn: 200299
2014-01-28 09:43:55 +00:00
NAKAMURA Takumi db441f68b6 [CMake] Let llvm_process_sources check not only *.cpp but also *.c.
llvm-svn: 200298
2014-01-28 09:43:49 +00:00
NAKAMURA Takumi 0ff6f49028 [CMake] Put lli-child-target into the Folder "Misc".
llvm-svn: 200297
2014-01-28 09:43:41 +00:00
Chandler Carruth b783628560 [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.

llvm-svn: 200294
2014-01-28 09:10:41 +00:00
Hal Finkel 4e703bcecd 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.

llvm-svn: 200288
2014-01-28 05:32:58 +00:00
Craig Topper 74169dcf45 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.
llvm-svn: 200287
2014-01-28 04:49:01 +00:00
Timur Iskhodzhanov 31377c5492 MC: Add a .debug section that we'll soon use to emit debug info into COFF files
llvm-svn: 200285
2014-01-28 03:48:44 +00:00
Michel Danzer bf1a641060 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>
llvm-svn: 200283
2014-01-28 03:01:16 +00:00
Jakob Stoklund Olesen 83c677353b Fix the DWARF EH encodings for Sparc PIC code.
Also emit the stubs that were generated for references to typeinfo
symbols.

llvm-svn: 200282
2014-01-28 02:52:26 +00:00
Reid Kleckner 26af2cae05 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

llvm-svn: 200281
2014-01-28 02:38:36 +00:00
Reid Kleckner b2340d4c8c 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.

llvm-svn: 200279
2014-01-28 02:08:22 +00:00
Chandler Carruth d84f776e8a [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.

llvm-svn: 200273
2014-01-28 01:25:38 +00:00
Juergen Ributzka 659ce00d60 [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.

llvm-svn: 200271
2014-01-28 01:20:14 +00:00
Arnold Schwaighofer 18865db3c1 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%

llvm-svn: 200270
2014-01-28 01:01:53 +00:00
Eric Christopher 2037caf8b9 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.

llvm-svn: 200269
2014-01-28 00:49:26 +00:00
Eric Christopher f07ee3ae28 Reformat slightly.
llvm-svn: 200264
2014-01-27 23:50:03 +00:00
Manman Ren f1cb16e481 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.

llvm-svn: 200262
2014-01-27 23:39:03 +00:00
Mark Seaborn 8d5b0e2f8f Fix the "#ifndef HAVE_SYS_WAIT_H" code path in Program.inc to compile
Without this fix, WaitResult is not defined.

llvm-svn: 200259
2014-01-27 22:53:07 +00:00
Mark Seaborn ba86cf51c9 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

llvm-svn: 200255
2014-01-27 22:38:14 +00:00
Matt Arsenault 5f2a92a26c 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.

llvm-svn: 200249
2014-01-27 21:41:54 +00:00
David Peixotto b76f55f74a 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

llvm-svn: 200248
2014-01-27 21:39:04 +00:00
Gautam Chakrabarti 35bd952a10 test commit: add minor comment
llvm-svn: 200244
2014-01-27 20:03:35 +00:00
Andrea Di Biagio f09a357765 [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.

llvm-svn: 200234
2014-01-27 18:45:30 +00:00
Reid Kleckner 73afb43213 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.

llvm-svn: 200229
2014-01-27 17:47:11 +00:00
NAKAMURA Takumi 14f1f44a16 [CMake] Put *_exports into "Misc" folder.
llvm-svn: 200228
2014-01-27 17:39:38 +00:00
David Majnemer e035cf9ce4 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

llvm-svn: 200227
2014-01-27 17:20:25 +00:00
Tobias Grosser 0811b945e2 Do not reference llvm-gcc from bugpoint
Reiterating: llvm-gcc is dead since a long time.
llvm-svn: 200220
2014-01-27 13:44:58 +00:00
Chandler Carruth e24f3973eb [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.

llvm-svn: 200219
2014-01-27 13:11:50 +00:00
Benjamin Kramer 9e709bce86 ConstantHoisting: We can't insert instructions directly in front of a PHI node.
Insert before the terminating instruction of the dominating block instead.

llvm-svn: 200218
2014-01-27 13:11:43 +00:00
Benjamin Kramer 9d9907924d XCore: Fix typo in function name.
llvm-svn: 200216
2014-01-27 11:50:13 +00:00
Chandler Carruth edfa37effa [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.

llvm-svn: 200215
2014-01-27 11:41:50 +00:00
Chandler Carruth 2bb03ba605 [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.

llvm-svn: 200214
2014-01-27 11:27:37 +00:00
Chandler Carruth 147c23278f [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.

llvm-svn: 200213
2014-01-27 11:12:24 +00:00
Chandler Carruth 7f90b4530b [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.

llvm-svn: 200212
2014-01-27 11:12:19 +00:00
Chandler Carruth 328998b2f7 [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.

llvm-svn: 200211
2014-01-27 11:12:14 +00:00
Nick Lewycky 629199ccb3 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!
llvm-svn: 200210
2014-01-27 10:47:44 +00:00
Nick Lewycky 31eaca5513 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.

llvm-svn: 200203
2014-01-27 10:04:03 +00:00
Stepan Dyatkovskiy 55139555c4 Additional fix for 200201: due to dependence on bitwidth test was moved to X86 directory.
llvm-svn: 200202
2014-01-27 09:43:10 +00:00
Stepan Dyatkovskiy 157bb42e27 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. 
llvm-svn: 200201
2014-01-27 09:18:31 +00:00
Chandler Carruth 56612b204a [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.

llvm-svn: 200198
2014-01-27 08:17:58 +00:00
Michel Danzer 13736221e3 R600/SI: Add intrinsic for BUFFER_LOAD_DWORD* instructions
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 200196
2014-01-27 07:20:51 +00:00
Michel Danzer 6064f57ae8 R600/SI: Add intrinsic for S_SENDMSG instruction
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 200195
2014-01-27 07:20:44 +00:00
Alp Toker 17d4e98e73 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.

llvm-svn: 200194
2014-01-27 05:24:39 +00:00
Rafael Espindola 25fa291fb2 Print .mask and .fmask with the target streamer.
Testing this also found the missing '\n' after .frame that this patch also
fixes.

llvm-svn: 200192
2014-01-27 04:33:11 +00:00
Rui Ueyama 06dc5e79c6 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.

llvm-svn: 200191
2014-01-27 04:22:24 +00:00
Alp Toker 3bb1de7885 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.

llvm-svn: 200188
2014-01-27 04:07:36 +00:00
Alp Toker 042f41b047 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.

llvm-svn: 200187
2014-01-27 04:07:17 +00:00
Rafael Espindola 054234faa8 Print .frame via the target streamer.
llvm-svn: 200186
2014-01-27 03:53:56 +00:00
Kevin Qin 4a183d7094 [AArch64 NEON] Try to generate CONCAT_VECTOR when lowering BUILD_VECTOR or SHUFFLE_VECTOR.
Replace r199791.

llvm-svn: 200180
2014-01-27 02:53:54 +00:00
Kevin Qin 9eeedfbaa6 Revert r199791.
It's old version which has some bugs. I'll commit lattest patch soon.

llvm-svn: 200179
2014-01-27 02:53:41 +00:00
Rafael Espindola 2ab7ea7c1a Use SwitchSection in MipsAsmPrinter::EmitStartOfAsmFile.
llvm-svn: 200178
2014-01-27 01:33:33 +00:00
Rafael Espindola 51577b66ce Remove dead code.
llvm-svn: 200174
2014-01-27 00:47:51 +00:00
Rafael Espindola 98f5b54f85 Add back spaces I missed in the conversion to emitRawComments.
Sorry about that.

llvm-svn: 200171
2014-01-27 00:19:41 +00:00
Rafael Espindola bcf890bf07 Use emitRawComment instead of EmitRawText.
llvm-svn: 200170
2014-01-27 00:16:00 +00:00
Rafael Espindola b7381560bc Add missing file.
llvm-svn: 200169
2014-01-27 00:08:17 +00:00
Rafael Espindola fd5d129298 Add a XCoreTargetStreamer and port over the simple uses of EmitRawText.
llvm-svn: 200167
2014-01-26 23:57:05 +00:00
Saleem Abdulrasool f9352a3880 MC: fix test locations/name
Placed the MC variant diagnostics in the wrong directory accidentally.  Move
them into their respective architecture specific directories.

llvm-svn: 200161
2014-01-26 22:55:02 +00:00
Saleem Abdulrasool a903661289 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.

llvm-svn: 200160
2014-01-26 22:29:50 +00:00
Saleem Abdulrasool a25e1e4ebe 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.

llvm-svn: 200159
2014-01-26 22:29:43 +00:00
Saleem Abdulrasool 077fd251fd MC: whitespace
Fix indentation, remove unnecessary line.  NFC.

llvm-svn: 200158
2014-01-26 22:29:36 +00:00
Alp Toker 771f7652a9 Avoid C++ comment in C sources
lib/Target/X86/Disassembler/X86DisassemblerDecoder.c:1361:7: error: C++ style comments are not allowed in ISO C90

llvm-svn: 200153
2014-01-26 18:44:34 +00:00
Evan Cheng d89738c591 Follow up of r200095. Code clean up.
llvm-svn: 200152
2014-01-26 18:30:13 +00:00
NAKAMURA Takumi 4f82397a20 [CMake] tablegen(): Use -I <dir> according to the list by include_directories().
For now, local_tds and global_tds are integrated to dependent_tds.

llvm-svn: 200150
2014-01-26 12:41:38 +00:00