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Eric Christopher [Mon, 10 Dec 2012 22:25:38 +0000 (22:25 +0000)]
Remove blank line at top of file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169779
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Eric Christopher [Mon, 10 Dec 2012 22:00:20 +0000 (22:00 +0000)]
Fix a coding style nit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169776
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Nadav Rotem [Mon, 10 Dec 2012 21:45:01 +0000 (21:45 +0000)]
Enable the loop vectorizer only on O2 and above. (Still disabled by default)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169774
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Tom Stellard [Mon, 10 Dec 2012 21:41:58 +0000 (21:41 +0000)]
LegalizeDAG: Allow type promotion of scalar loads
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169773
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Tom Stellard [Mon, 10 Dec 2012 21:41:54 +0000 (21:41 +0000)]
LegalizeDAG: Allow type promotion for scalar stores
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169772
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Nadav Rotem [Mon, 10 Dec 2012 21:39:02 +0000 (21:39 +0000)]
Split the LoopVectorizer into H and CPP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169771
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Bill Wendling [Mon, 10 Dec 2012 21:33:45 +0000 (21:33 +0000)]
Revert r169656.
The linker will call `lto_codegen_add_must_preserve_symbol' on all globals that
should be kept around. The linker will pretend that a dylib is being created.
<rdar://problem/
12528059>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169770
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Eli Bendersky [Mon, 10 Dec 2012 20:36:01 +0000 (20:36 +0000)]
Add a test for explicitly exercising the mc-relax-all flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169764
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Eli Bendersky [Mon, 10 Dec 2012 20:13:43 +0000 (20:13 +0000)]
Cleanup formatting, comments and naming.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169762
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Akira Hatanaka [Mon, 10 Dec 2012 20:04:40 +0000 (20:04 +0000)]
[mips] Set HWEncoding field of registers. Use delete function
getMipsRegisterNumbering and use MCRegisterInfo::getEncodingValue instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169760
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Eric Christopher [Mon, 10 Dec 2012 19:51:21 +0000 (19:51 +0000)]
Use the somewhat semantic term "split dwarf" it more matches what's
going on and makes a lot of the terminology in comments make more sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169758
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Eric Christopher [Mon, 10 Dec 2012 19:51:18 +0000 (19:51 +0000)]
Delete the FissionCU.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169757
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Eric Christopher [Mon, 10 Dec 2012 19:51:13 +0000 (19:51 +0000)]
Reorder fission variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169756
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Bill Wendling [Mon, 10 Dec 2012 19:46:49 +0000 (19:46 +0000)]
Don't use a red zone for code coverage if the user specified `-mno-red-zone'.
The `-mno-red-zone' flag wasn't being propagated to the functions that code
coverage generates. This allowed some of them to use the red zone when that
wasn't allowed.
<rdar://problem/
12843084>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169754
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Nadav Rotem [Mon, 10 Dec 2012 19:25:06 +0000 (19:25 +0000)]
Add support for reverse induction variables. For example:
while (i--)
sum+=A[i];
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169752
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Jim Grosbach [Mon, 10 Dec 2012 19:03:37 +0000 (19:03 +0000)]
CMake: Don't run 'git svn' if there is no .git/svn directory.
If the local checkout does not have 'git svn' references set up, don't try
to use 'git svn' for version information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169749
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Eli Bendersky [Mon, 10 Dec 2012 18:59:39 +0000 (18:59 +0000)]
This patch adds statistics for other non-DWARF fragments emitted by
the assembler. This is useful in order to know how the numbers add up,
since in particular the Align fragments account for a non-trivial
portion of the emitted fragments (especially on -O0 which sets
relax-all).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169747
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Hal Finkel [Mon, 10 Dec 2012 18:49:16 +0000 (18:49 +0000)]
Use GetUnderlyingObjects in misched
misched used GetUnderlyingObject in order to break false load/store
dependencies, and the -enable-aa-sched-mi feature similarly relied on
GetUnderlyingObject in order to ensure it is safe to use the aliasing analysis.
Unfortunately, GetUnderlyingObject does not recurse through phi nodes, and so
(especially due to LSR) all of these mechanisms failed for
induction-variable-dependent loads and stores inside loops.
This change replaces uses of GetUnderlyingObject with GetUnderlyingObjects
(which will recurse through phi and select instructions) in misched.
Andy reviewed, tested and simplified this patch; Thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169744
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Sean Silva [Mon, 10 Dec 2012 18:37:26 +0000 (18:37 +0000)]
Fix funky copy-pasted grammatical error.
PR14343
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169742
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Chandler Carruth [Mon, 10 Dec 2012 18:23:52 +0000 (18:23 +0000)]
Revert "Make '-mtune=x86_64' assume fast unaligned memory accesses."
Accidental commit... git svn betrayed me. Sorry for the noise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169741
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Chandler Carruth [Mon, 10 Dec 2012 18:22:42 +0000 (18:22 +0000)]
Make '-mtune=x86_64' assume fast unaligned memory accesses.
Summary:
Not all chips targeted by x86_64 have this feature, but a dramatically
increasing number do. Specifying a chip-specific tuning parameter will
continue to turn the feature on or off as appropriate for that
particular chip, but the generic flag should try to achieve the best
performance on the most widely available hardware. Today, the number of
chips with fast UA access dwarfs those without in the x86-64 space.
Note that this also brings LLVM's code generation for this '-march' flag
more in line with that of modern GCCs.
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D195
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169740
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Chandler Carruth [Mon, 10 Dec 2012 18:22:40 +0000 (18:22 +0000)]
Fix a typo in my previous commit -- bloomfield is 0x1A not 0x2A.
Thanks to the PaX folks for noticing in review! We need some tests here,
any sugestions welcome...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169739
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Chandler Carruth [Mon, 10 Dec 2012 09:18:44 +0000 (09:18 +0000)]
Address a FIXME and update the fast unaligned memory feature for newer
Intel chips.
The model number rules were determined by inspecting Intel's
documentation for their newer chip model numbers. My understanding is
that all of the newer Intel chips have fast unaligned memory access, but
if anyone is concerned about a particular chip, just shout.
No tests updated; it's not clear we have dedicated tests for the chips'
various features, but if anyone would like tests (or can point me at
some existing ones), I'm happy to oblige.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169730
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Chandler Carruth [Mon, 10 Dec 2012 08:28:39 +0000 (08:28 +0000)]
Add a new visitor for walking the uses of a pointer value.
This visitor provides infrastructure for recursively traversing the
use-graph of a pointer-producing instruction like an alloca or a malloc.
It maintains a worklist of uses to visit, so it can handle very deep
recursions. It automatically looks through instructions which simply
translate one pointer to another (bitcasts and GEPs). It tracks the
offset relative to the original pointer as long as that offset remains
constant and exposes it during the visit as an APInt offset. Finally, it
performs conservative escape analysis.
However, currently it has some limitations that should be addressed
going forward:
1) It doesn't handle vectors of pointers.
2) It doesn't provide a cheaper visitor when the constant offset
tracking isn't needed.
3) It doesn't support non-instruction pointer values.
The current functionality is exactly what is required to implement the
SROA pointer-use visitors in terms of this one, rather than in terms of
their own ad-hoc base visitor, which was always very poorly specified.
SROA has been converted to use this, and the code there deleted which
this utility now provides.
Technically speaking, using this new visitor allows SROA to handle a few
more cases than it previously did. It is now more aggressive in ignoring
chains of instructions which look like they would defeat SROA, but in
fact do not because they never result in a read or write of memory.
While this is "neat", it shouldn't be interesting for real programs as
any such chains should have been removed by others passes long before we
get to SROA. As a consequence, I've not added any tests for these
features -- it shouldn't be part of SROA's contract to perform such
heroics.
The goal is to extend the functionality of this visitor going forward,
and re-use it from passes like ASan that can benefit from doing
a detailed walk of the uses of a pointer.
Thanks to Ben Kramer for the code review rounds and lots of help
reviewing and debugging this patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169728
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Craig Topper [Mon, 10 Dec 2012 08:12:29 +0000 (08:12 +0000)]
Teach DAG combine to handle vector add/sub with vectors of all 0s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169727
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NAKAMURA Takumi [Mon, 10 Dec 2012 07:14:29 +0000 (07:14 +0000)]
[CMake] TARGET_TRIPLE may be internal alias of LLVM_DEFAULT_TARGET_TRIPLE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169726
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NAKAMURA Takumi [Mon, 10 Dec 2012 05:27:15 +0000 (05:27 +0000)]
[CMake] Update dependencies to intrinsics_gen corresponding to r169711.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169724
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Bill Wendling [Mon, 10 Dec 2012 02:51:16 +0000 (02:51 +0000)]
Revert to old behavior until linker can pass export-dynamic option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169720
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Chandler Carruth [Mon, 10 Dec 2012 00:54:45 +0000 (00:54 +0000)]
Fix PR14548: SROA was crashing on a mixture of i1 and i8 loads and stores.
When SROA was evaluating a mixture of i1 and i8 loads and stores, in
just a particular case, it would tickle a latent bug where we compared
bits to bytes rather than bits to bits. As a consequence of the latent
bug, we would allow integers through which were not byte-size multiples,
a situation the later rewriting code was never intended to handle.
In release builds this could trigger all manner of oddities, but the
reported issue in PR14548 was forming invalid bitcast instructions.
The only downside of this fix is that it makes it more clear that SROA
in its current form is not capable of handling mixed i1 and i8 loads and
stores. Sometimes with the previous code this would work by luck, but
usually it would crash, so I'm not terribly worried. I'll watch the LNT
numbers just to be sure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169719
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Dmitri Gribenko [Sun, 9 Dec 2012 23:14:26 +0000 (23:14 +0000)]
Documentation: convert ReleaseNotes.html to reST.
Patch by Anthony Mykhailenko with small fixes by me.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169714
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Michael Ilseman [Sun, 9 Dec 2012 21:12:04 +0000 (21:12 +0000)]
Reorganize FastMathFlags to be a wrapper around unsigned, and streamline some interfaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169712
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Paul Redmond [Sun, 9 Dec 2012 20:42:17 +0000 (20:42 +0000)]
LoopVectorize: support vectorizing intrinsic calls
- added function to VectorTargetTransformInfo to query cost of intrinsics
- vectorize trivially vectorizable intrinsic calls such as sin, cos, log, etc.
Reviewed by: Nadav
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169711
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Michael Ilseman [Sun, 9 Dec 2012 20:23:16 +0000 (20:23 +0000)]
Have the bitcode reader/writer just use FPMathOperator's fast math enum directly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169710
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Paul Redmond [Sun, 9 Dec 2012 19:46:31 +0000 (19:46 +0000)]
test commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169709
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Chris Lattner [Sun, 9 Dec 2012 16:55:39 +0000 (16:55 +0000)]
So many people have touched this, it doesn't make sense to ascribe authorship anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169704
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Jakub Staszak [Sun, 9 Dec 2012 16:06:44 +0000 (16:06 +0000)]
Use m_OneUse pattern instead of hasOneUse() method.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169703
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Sean Silva [Sun, 9 Dec 2012 15:52:47 +0000 (15:52 +0000)]
docs: Convert GarbageCollection.html to reST
Patch by Alexander Zinenko!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169702
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Jakub Staszak [Sun, 9 Dec 2012 15:37:46 +0000 (15:37 +0000)]
Remove trailing spaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169701
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Dmitri Gribenko [Sun, 9 Dec 2012 15:33:26 +0000 (15:33 +0000)]
Documentation: HowToReleaseLLVM.rst: remove trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169700
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Dmitri Gribenko [Sun, 9 Dec 2012 15:29:56 +0000 (15:29 +0000)]
Documentation: don't create TOCs manually.
Thanks to Sean Silva for pointing out!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169699
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Chandler Carruth [Sun, 9 Dec 2012 11:56:01 +0000 (11:56 +0000)]
Switch SROA to pop Uses off the back of its visitors' queues.
This will more closely match the behavior of the new PtrUseVisitor that
I am adding. Hopefully this will not change the actual behavior in any
way, but by making the processing order more similar help in debugging.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169697
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Benjamin Kramer [Sun, 9 Dec 2012 10:34:22 +0000 (10:34 +0000)]
Drop the address space limit for tests in the makefile build.
The limit seems to break newer pythons (see PR13598) so just drop it for now.
Eventually lit should learn to set limits for its children instead of a global
limit in the makefile.
If some PPC bots fail after this change: That's a good thing, they actually run
clang tests now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169695
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Craig Topper [Sun, 9 Dec 2012 08:20:52 +0000 (08:20 +0000)]
Remove extra blank line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169692
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Shuxin Yang [Sun, 9 Dec 2012 03:12:46 +0000 (03:12 +0000)]
- Re-enable population count loop idiom recognization
- fix a bug which cause sigfault.
- add two testing cases which was causing crash
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169687
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Craig Topper [Sat, 8 Dec 2012 22:49:19 +0000 (22:49 +0000)]
Teach DAG combine to handle vector logical operations with vectors of all 1s or all 0s. These cases can show up when vectors are split for legalizing. Fix some tests that were dependent on these cases not being combined.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169684
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Chandler Carruth [Sat, 8 Dec 2012 22:18:29 +0000 (22:18 +0000)]
Revert the patches adding a popcount loop idiom recognition pass.
There are still bugs in this pass, as well as other issues that are
being worked on, but the bugs are crashers that occur pretty easily in
the wild. Test cases have been sent to the original commit's review
thread.
This reverts the commits:
r169671: Fix a logic error.
r169604: Move the popcnt tests to an X86 subdirectory.
r168931: Initial commit adding the pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169683
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Benjamin Kramer [Sat, 8 Dec 2012 10:45:24 +0000 (10:45 +0000)]
Simplify code. Sort includes. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169676
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Logan Chien [Sat, 8 Dec 2012 05:19:49 +0000 (05:19 +0000)]
Fix Windows build breakage.
Windows does not have <stdint.h>, should include
"llvm/Support/DataTypes.h" instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169672
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Shuxin Yang [Sat, 8 Dec 2012 05:00:59 +0000 (05:00 +0000)]
Fix an inadvertent typo error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169671
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Chandler Carruth [Sat, 8 Dec 2012 03:10:14 +0000 (03:10 +0000)]
Fix a use-after-free bug found by ASan. You can't assign a temporary
std::string to a StringRef. Moreover, the method being called accepts
a Twine to simplify these patterns.
Fixes this ASan failure:
==6312== ERROR: AddressSanitizer: heap-use-after-free on address 0x7fd558b1af58 at pc 0xcb7529 bp 0x7fffff572080 sp 0x7fffff572078
READ of size 1 at 0x7fd558b1af58 thread T0
#0 0xcb7528 .../llvm/include/llvm/ADT/StringRef.h:192 llvm::StringRef::operator[]()
#1 0x1d53c0a .../llvm/include/llvm/ADT/StringExtras.h:128 llvm::HashString()
#2 0x1d53878 .../llvm/lib/Support/StringMap.cpp:64 llvm::StringMapImpl::LookupBucketFor()
#3 0x1b6872f .../llvm/include/llvm/ADT/StringMap.h:352 llvm::StringMap<>::GetOrCreateValue<>()
#4 0x1b61836 .../llvm/lib/MC/MCContext.cpp:109 llvm::MCContext::GetOrCreateSymbol()
#5 0xe9fd47 .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:154 (anonymous namespace)::ARMELFStreamer::EmitMappingSymbol()
#6 0xea01dd .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:133 (anonymous namespace)::ARMELFStreamer::EmitDataMappingSymbol()
#7 0xe9f78b .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:91 (anonymous namespace)::ARMELFStreamer::EmitBytes()
#8 0x1b15d82 .../llvm/lib/MC/MCStreamer.cpp:89 llvm::MCStreamer::EmitIntValue()
#9 0xcc0f9b .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:713 llvm::ARMAsmPrinter::emitAttributes()
#10 0xcc0d44 .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:632 llvm::ARMAsmPrinter::EmitStartOfAsmFile()
#11 0x14692ad .../llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:162 llvm::AsmPrinter::doInitialization()
#12 0x1bc4677 .../llvm/lib/VMCore/PassManager.cpp:1561 llvm::FPPassManager::doInitialization()
#13 0x1bc4990 .../llvm/lib/VMCore/PassManager.cpp:1595 llvm::MPPassManager::runOnModule()
#14 0x1bc55e5 .../llvm/lib/VMCore/PassManager.cpp:1705 llvm::PassManagerImpl::run()
#15 0x1bc5878 .../llvm/lib/VMCore/PassManager.cpp:1740 llvm::PassManager::run()
#16 0xc3954d .../llvm/tools/llc/llc.cpp:378 compileModule()
#17 0xc38001 .../llvm/tools/llc/llc.cpp:194 main
#18 0x7fd557d6a11c __libc_start_main
0x7fd558b1af58 is located 24 bytes inside of 29-byte region [0x7fd558b1af40,0x7fd558b1af5d)
freed by thread T0 here:
#0 0xc337da .../llvm/projects/compiler-rt/lib/asan/asan_new_delete.cc:56 operator delete()
#1 0x1ee9cef .../libstdc++-v3/include/bits/basic_string.h:535 std::string::~string()
#2 0xea01dd .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:133 (anonymous namespace)::ARMELFStreamer::EmitDataMappingSymbol()
#3 0xe9f78b .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:91 (anonymous namespace)::ARMELFStreamer::EmitBytes()
#4 0x1b15d82 .../llvm/lib/MC/MCStreamer.cpp:89 llvm::MCStreamer::EmitIntValue()
#5 0xcc0f9b .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:713 llvm::ARMAsmPrinter::emitAttributes()
#6 0xcc0d44 .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:632 llvm::ARMAsmPrinter::EmitStartOfAsmFile()
#7 0x14692ad .../llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:162 llvm::AsmPrinter::doInitialization()
#8 0x1bc4677 .../llvm/lib/VMCore/PassManager.cpp:1561 llvm::FPPassManager::doInitialization()
#9 0x1bc4990 .../llvm/lib/VMCore/PassManager.cpp:1595 llvm::MPPassManager::runOnModule()
#10 0x1bc55e5 .../llvm/lib/VMCore/PassManager.cpp:1705 llvm::PassManagerImpl::run()
#11 0x1bc5878 .../llvm/lib/VMCore/PassManager.cpp:1740 llvm::PassManager::run()
#12 0xc3954d .../llvm/tools/llc/llc.cpp:378 compileModule()
#13 0xc38001 .../llvm/tools/llc/llc.cpp:194 main
#14 0x7fd557d6a11c __libc_start_main
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169668
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Bill Wendling [Sat, 8 Dec 2012 00:18:16 +0000 (00:18 +0000)]
Add the `lto_codegen_set_export_dynamic' function.
This function sets the `_exportDynamic' ivar. When that's set, we export all
symbols (e.g. we don't run the internalize pass). This is equivalent to the
`--export-dynamic' linker flag in GNU land:
--export-dynamic
When creating a dynamically linked executable, add all symbols to the dynamic
symbol table. The dynamic symbol table is the set of symbols which are visible
from dynamic objects at run time. If you do not use this option, the dynamic
symbol table will normally contain only those symbols which are referenced by
some dynamic object mentioned in the link. If you use dlopen to load a dynamic
object which needs to refer back to the symbols defined by the program, rather
than some other dynamic object, then you will probably need to use this option
when linking the program itself.
The Darwin linker will support this via the `-export_dynamic' flag. We should
modify clang to support this via the `-rdynamic' flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169656
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Jim Grosbach [Fri, 7 Dec 2012 23:53:27 +0000 (23:53 +0000)]
Add C API for specifying CPU to the disassembler.
It was a nasty oversight that we didn't include this when we added this
API in the first place. Blech.
rdar://
12839439
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Bill Wendling [Fri, 7 Dec 2012 23:16:57 +0000 (23:16 +0000)]
s/AttrListPtr/AttributeSet/g to better label what this class is going to be in the near future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169651
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Eli Bendersky [Fri, 7 Dec 2012 22:06:56 +0000 (22:06 +0000)]
Make the contents of encoded sections SmallVector<char, N> instead of
SmallString. This makes it possible to use the length-erased SmallVectorImpl
in the interface without imposing buffer size. Thus, the size of MCInstFragment
is back down since a preallocated 8-byte contents buffer is enough.
It would be generally a good idea to rid all the fragments of SmallString as
contents, because a vector just makes more sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169644
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Nadav Rotem [Fri, 7 Dec 2012 21:43:11 +0000 (21:43 +0000)]
When we use the BLEND instruction that uses the MSB as a mask, we can remove
the VSRI instruction before it since it does not affect the MSB.
Thanks Craig Topper for suggesting this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169638
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Michael Ilseman [Fri, 7 Dec 2012 21:41:53 +0000 (21:41 +0000)]
Remove trailing whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169637
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Matthew Curtis [Fri, 7 Dec 2012 21:03:15 +0000 (21:03 +0000)]
In hexagon convertToHardwareLoop, don't deref end() iterator
In particular, check if MachineBasicBlock::iterator is end() before
using it to call getDebugLoc();
See also this thread on llvm-commits:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-
20121112/155914.html
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169634
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Ted Kremenek [Fri, 7 Dec 2012 19:44:12 +0000 (19:44 +0000)]
Mark ImmutableMap::remove/add() const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169629
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John Criswell [Fri, 7 Dec 2012 19:21:10 +0000 (19:21 +0000)]
Fixed some grammar and punctuation error.
No content changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169627
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Eli Bendersky [Fri, 7 Dec 2012 19:13:57 +0000 (19:13 +0000)]
Refactor MCInstFragment and MCDataFragment to adhere to a common interface,
which removes code duplication and prepares the ground for future additions.
Full discussion:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-
20121203/158233.html
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169626
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Nadav Rotem [Fri, 7 Dec 2012 19:01:13 +0000 (19:01 +0000)]
X86: Prefer using VPSHUFD over VPERMIL because it has better throughput.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169624
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Eli Bendersky [Fri, 7 Dec 2012 17:59:21 +0000 (17:59 +0000)]
Add separate statistics for Data and Inst fragments emitted during relaxation.
Also fixes a test that was overly-sensitive to the exact order of statistics
emitted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169619
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Eli Bendersky [Fri, 7 Dec 2012 17:55:28 +0000 (17:55 +0000)]
Some common functionality from WinCOFFStreamer::EmitAssignment can be now
delegated to MCObjectStreamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169617
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Eli Bendersky [Fri, 7 Dec 2012 17:42:41 +0000 (17:42 +0000)]
Lift EmitAssignment into MCObjectStreamer which gets rid of at least three
duplicate implementations in format-specific streamers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169613
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Tim Northover [Fri, 7 Dec 2012 16:50:23 +0000 (16:50 +0000)]
Added Mapping Symbols for ARM ELF
Before this patch, when you objdump an LLVM-compiled file, objdump tried to
decode data-in-code sections as if they were code. This patch adds the missing
Mapping Symbols, as defined by "ELF for the ARM Architecture" (ARM IHI 0044D).
Patch based on work by Greg Fitzgerald.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169609
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Dmitri Gribenko [Fri, 7 Dec 2012 16:42:48 +0000 (16:42 +0000)]
Convert HowToReleaseLLVM.html to reST
Patch by Alexander Zinenko.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169608
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David Tweed [Fri, 7 Dec 2012 15:57:45 +0000 (15:57 +0000)]
The test unconditionally assumes a particular cpu has a backend build in the target.
Buildbots for some hosts may choose to build only their own backend in order to
maximise testing-turnaround time. Move the test into a prefixed directory so
lit's standard "backend specific" suppression can be done.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169604
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Logan Chien [Fri, 7 Dec 2012 15:50:40 +0000 (15:50 +0000)]
Split MCELFStreamer into a header file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169603
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Sean Silva [Fri, 7 Dec 2012 10:36:55 +0000 (10:36 +0000)]
docs: Convert LangRef to reST.
NOTE: If you have any patches in the works that modify LangRef, you will
need to rewrite the changes to LangRef.html to their equivalents in
LangRef.rst. If you need assistance feel free to contact me.
Since LangRef is mission-critical for the project and "normative", I
have taken extra care to ensure that no content was lost or altered in
the conversion. The content was converted with a tool called `pandoc`,
so there is no chance for a human error like accidentally forgetting a
sentence or whatever. After the initial conversion by `pandoc`, only
changes to the markup were done.
This is just the most literal conversion of the HTML document as
possible. It might be worth exploring some way to chop up this massive
document into separate pages, e.g. something like
`docs/LangRef/Instructions.rst`, `docs/LangRef/Intrinsics.rst`, etc.
with `docs/LangRef.rst` being an "intro/navigation page" of sorts. On
the other hand, that loses the ability to {Ctrl,Cmd}-F for a given term
right from your browser.
IMO, I think our stylesheet needs some work because I find it hard to
tell what level of nesting some of the headings are at (e.g. "is this a
new section or is it a subsection?"). The issue is present on other
pages, but the sheer size and deep section structure of LangRef really
brings this issue out. If there are any web designers out there in the
community it would be awesome if you tried to come up with something
nicer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169596
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Evgeniy Stepanov [Fri, 7 Dec 2012 09:08:32 +0000 (09:08 +0000)]
[msan] Remove readonly/readnone attributes from all called functions.
MSan uses a TLS slot to pass shadow for function arguments and return values.
This makes all instrumented functions not readonly, and at the same time
requires that all callees of an instrumented function that may be
MSan-instrumented do not have readonly attribute (otherwise some of the
instrumentation may be optimized out).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169591
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Jakob Stoklund Olesen [Fri, 7 Dec 2012 04:23:40 +0000 (04:23 +0000)]
Use the new MIBundleBuilder class in the Mips target.
This is the preferred way of creating bundled machine instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169585
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Jakob Stoklund Olesen [Fri, 7 Dec 2012 04:23:35 +0000 (04:23 +0000)]
Add an MIBundleBuilder class.
Like the MachineInstrBuilder, this class makes it easier to build
bundles of MachineInstrs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169584
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Jakob Stoklund Olesen [Fri, 7 Dec 2012 04:23:29 +0000 (04:23 +0000)]
Add higher-level API for dealing with bundled MachineInstrs.
This is still a work in progress. The purpose is to make bundling and
unbundling operations explicit, and to catch errors where bundles are
broken or created inadvertently.
The old IsInsideBundle flag is replaced by two MI flags: BundledPred
which has the same meaning as IsInsideBundle, and BundledSucc which is
set on instructions that are bundled with a successor. Having two flags
provdes redundancy to detect when a bundle is inadvertently torn by a
splice() or insert(), and it makes it possible to write bundle iterators
that don't need to peek at adjacent instructions.
The new flags can't be manipulated directly (once setIsInsideBundle is
gone). Instead there are MI functions to make and break bundle bonds.
The setIsInsideBundle function will be removed in a future commit. It
should be replaced by bundleWithPred().
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Akira Hatanaka [Fri, 7 Dec 2012 03:10:18 +0000 (03:10 +0000)]
[mips] Delete nodes and instructions for dynamic alloca that are no longer in
use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169580
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Akira Hatanaka [Fri, 7 Dec 2012 03:06:09 +0000 (03:06 +0000)]
[mips] Shorten predicate name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169579
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Akira Hatanaka [Fri, 7 Dec 2012 03:04:05 +0000 (03:04 +0000)]
[mips] Delete unused sub-target features.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169578
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Akira Hatanaka [Fri, 7 Dec 2012 03:01:24 +0000 (03:01 +0000)]
[mips] Remove unnecessary predicates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169577
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Chandler Carruth [Fri, 7 Dec 2012 02:08:58 +0000 (02:08 +0000)]
Add support to ValueTracking for determining that a pointer is non-null
by virtue of inbounds GEPs that preclude a null pointer.
This is a very common pattern in the code generated by std::vector and
other standard library routines which use allocators that test for null
pervasively. This is one step closer to teaching Clang+LLVM to be able
to produce an empty function for:
void f() {
std::vector<int> v;
v.push_back(1);
v.push_back(2);
v.push_back(3);
v.push_back(4);
}
Which is related to getting them to completely fold SmallVector
push_back sequences into constants when inlining and other optimizations
make that a possibility.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169573
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Ted Kremenek [Fri, 7 Dec 2012 02:03:00 +0000 (02:03 +0000)]
Add manualRetain() and manualRelease() to ImmutableMapRef, and add a new constructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169572
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NAKAMURA Takumi [Fri, 7 Dec 2012 01:43:23 +0000 (01:43 +0000)]
Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables .
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169569
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NAKAMURA Takumi [Fri, 7 Dec 2012 01:25:45 +0000 (01:25 +0000)]
unittest/googletest/Makefile: Unbreak out-of-tree build.
- Use SOURCES instead of Source. See Makefile.rules and MakefileGuide.html.
- Don't assume the current directory. $(wildcard *.cc) doesn't match anything on corresponding build directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169568
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Eli Bendersky [Fri, 7 Dec 2012 00:01:53 +0000 (00:01 +0000)]
Add convenience accessor to Triple for OS == NaCl
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169565
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Alexey Samsonov [Thu, 6 Dec 2012 23:59:54 +0000 (23:59 +0000)]
Try to unbreak makefile build by excluding gtest-all.cc source
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169564
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Matt Beaumont-Gay [Thu, 6 Dec 2012 23:15:36 +0000 (23:15 +0000)]
Add a 'using' declaration to suppress GCC's -Woverloaded-virtual while we
decide what pattern we want to follow in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169561
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Alexey Samsonov [Thu, 6 Dec 2012 23:04:41 +0000 (23:04 +0000)]
Modify the LLVM checkout of googletest:
1) don't delete gtest-all.cc (which is used to gather all gtest source
files in a single file)
2) make including LLVMSupport headers optional (on by default).
Sanitizer tools may want to use their own versions of googletest
compiled with specific flags, instead of the common googletest
library used for all other LLVM/Clang unittests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169559
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Pedro Artigas [Thu, 6 Dec 2012 22:12:44 +0000 (22:12 +0000)]
fixed valgrind issues of prior commit, this change applies r169456 changes back to the tree with fixes. on darwin no valgrind issues exist in the tests that used to fail.
original change description:
change MCContext to work on the doInitialization/doFinalization model
reviewed by Evan Cheng <evan.cheng@apple.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169553
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Jakub Staszak [Thu, 6 Dec 2012 22:08:59 +0000 (22:08 +0000)]
Remove unused field.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169551
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Jakub Staszak [Thu, 6 Dec 2012 21:57:16 +0000 (21:57 +0000)]
Remove trailing spaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169550
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Dmitri Gribenko [Thu, 6 Dec 2012 21:24:47 +0000 (21:24 +0000)]
Fix typos in CHECK lines.
Patch by Alexander Zinenko.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169547
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Dmitri Gribenko [Thu, 6 Dec 2012 21:12:35 +0000 (21:12 +0000)]
Documentation: fix typos and formatting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169546
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Ted Kremenek [Thu, 6 Dec 2012 19:41:30 +0000 (19:41 +0000)]
Revert "Allow modifying an ImmutableMap without canonicalizing it immediately."
Jordan and I discussed this, and we don't want this in the API.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169541
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Evan Cheng [Thu, 6 Dec 2012 19:13:27 +0000 (19:13 +0000)]
Replace r169459 with something safer. Rather than having computeMaskedBits to
understand target implementation of any_extend / extload, just generate
zero_extend in place of any_extend for liveouts when the target knows the
zero_extend will be implicit (e.g. ARM ldrb / ldrh) or folded (e.g. x86 movz).
rdar://
12771555
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Jakub Staszak [Thu, 6 Dec 2012 19:05:46 +0000 (19:05 +0000)]
Remove unneeded function, since PR8156 was fixed over a year ago.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169534
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Jordan Rose [Thu, 6 Dec 2012 19:01:24 +0000 (19:01 +0000)]
Allow modifying an ImmutableMap without canonicalizing it immediately.
This is an alternative to the ImmutableMapRef interface where a factory
should still be canonicalizing by default, but in certain cases an
improvement can be made by delaying the canonicalization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169532
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Jakub Staszak [Thu, 6 Dec 2012 18:22:59 +0000 (18:22 +0000)]
Simplify code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169521
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Nadav Rotem [Thu, 6 Dec 2012 17:34:13 +0000 (17:34 +0000)]
Fix a bug in the code that merges consecutive stores. Previously we did not
check if loads that happen in between stores alias with the first store in the
chain, only with the second store onwards.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169516
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NAKAMURA Takumi [Thu, 6 Dec 2012 13:38:00 +0000 (13:38 +0000)]
MemorySanitizer.cpp: Suppress a warning. [-Wunused-variable]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169504
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Evgeniy Stepanov [Thu, 6 Dec 2012 11:58:59 +0000 (11:58 +0000)]
[msan] Fix a typo in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169491
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Evgeniy Stepanov [Thu, 6 Dec 2012 11:41:03 +0000 (11:41 +0000)]
[msan] Do not store origin for clean values.
Instead of unconditionally storing origin with every application store,
only do this when the shadow of the stored value is != 0.
This change also delays instrumentation of stores until after the walk over
function's instructions, because adding new basic blocks confuses InstVisitor.
We only keep 1 origin value per 4 bytes of application memory. This change
fixes the bug when a store of a single clean byte wiped the origin for the
whole 4-byte area.
Since stores of uninitialized values are relatively uncommon, this change
improves performance of track-origins mode by 5% median and by up to 47% on
specs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169490
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Bill Wendling [Thu, 6 Dec 2012 07:55:19 +0000 (07:55 +0000)]
s/getLowerBoundDefault/getDefaultLowerBound/ for consistency. Also put the more natural check first in the if-then statement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169486
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