Dan Gohman [Fri, 27 Apr 2012 18:56:31 +0000 (18:56 +0000)]
Miscellaneous accumulated cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155725
91177308-0d34-0410-b5e6-
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Lang Hames [Fri, 27 Apr 2012 18:51:24 +0000 (18:51 +0000)]
Fix the order of the operands in the llvm.fma intrinsic patterns for ARM,
<rdar://problem/
11325085>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155724
91177308-0d34-0410-b5e6-
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Mon P Wang [Fri, 27 Apr 2012 18:09:28 +0000 (18:09 +0000)]
Add an early bailout to IsValueFullyAvailableInBlock from deeply nested blocks.
The limit is set to an arbitrary 1000 recursion depth to avoid stack overflow
issues. <rdar://problem/
11286839>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155722
91177308-0d34-0410-b5e6-
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Dan Gohman [Fri, 27 Apr 2012 17:50:22 +0000 (17:50 +0000)]
Reapply r155682, making constant folding more consistent, with a fix to work
properly with how the code handles all-undef PHI nodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155721
91177308-0d34-0410-b5e6-
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Richard Barton [Fri, 27 Apr 2012 17:34:01 +0000 (17:34 +0000)]
Fix ARM assembly parsing for upper case condition codes on IT instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155720
91177308-0d34-0410-b5e6-
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Jim Grosbach [Fri, 27 Apr 2012 16:29:22 +0000 (16:29 +0000)]
Remove a docs reference to the CBackend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155716
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Fri, 27 Apr 2012 12:21:46 +0000 (12:21 +0000)]
Missed some register numbers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155706
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Fri, 27 Apr 2012 12:14:03 +0000 (12:14 +0000)]
Update edis test for r155704.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155705
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Fri, 27 Apr 2012 12:07:43 +0000 (12:07 +0000)]
X86: Don't emit conditional floating point moves on when targeting pre-pentiumpro architectures.
* Model FPSW (the FPU status word) as a register.
* Add ISel patterns for the FUCOM*, FNSTSW and SAHF instructions.
* During Legalize/Lowering, build a node sequence to transfer the comparison
result from FPSW into EFLAGS. If you're wondering about the right-shift: That's
an implicit sub-register extraction (%ax -> %ah) which is handled later on by
the instruction selector.
Fixes PR6679. Patch by Christoph Erhardt!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155704
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Evgeniy Stepanov [Fri, 27 Apr 2012 10:27:32 +0000 (10:27 +0000)]
Update config.sub in the sample project.
This change replaces projects/sample/autoconf/config.sub with a copy of
autoconf/config.sub.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155703
91177308-0d34-0410-b5e6-
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Kostya Serebryany [Fri, 27 Apr 2012 10:04:53 +0000 (10:04 +0000)]
[asan] small optimization: do not emit "x+0" instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155701
91177308-0d34-0410-b5e6-
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Richard Barton [Fri, 27 Apr 2012 08:42:59 +0000 (08:42 +0000)]
Refactor IT handling not to store the bottom bit of the condition code in the mask operand in the MCInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155700
91177308-0d34-0410-b5e6-
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NAKAMURA Takumi [Fri, 27 Apr 2012 07:59:20 +0000 (07:59 +0000)]
Revert r155682, "Use ConstantExpr::getExtractElement when constant-folding vectors"
It broke stage2 build. stage1/clang sometimes crashed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155699
91177308-0d34-0410-b5e6-
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Kostya Serebryany [Fri, 27 Apr 2012 07:31:53 +0000 (07:31 +0000)]
[tsan] Atomic support for ThreadSanitizer, patch by Dmitry Vyukov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155698
91177308-0d34-0410-b5e6-
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Craig Topper [Fri, 27 Apr 2012 07:11:58 +0000 (07:11 +0000)]
Add mcpu to tests to prevent them from using AVX instructions on Sandy Bridge after r155618.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155696
91177308-0d34-0410-b5e6-
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Evan Cheng [Fri, 27 Apr 2012 02:11:10 +0000 (02:11 +0000)]
Implement a bastardized ABI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155686
91177308-0d34-0410-b5e6-
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Evan Cheng [Fri, 27 Apr 2012 01:27:19 +0000 (01:27 +0000)]
- thumbv6 shouldn't imply +thumb2. Cortex-M0 doesn't suppport 32-bit Thumb2
instructions.
- However, it does support dmb, dsb, isb, mrs, and msr.
rdar://
11331541
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155685
91177308-0d34-0410-b5e6-
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Dan Gohman [Fri, 27 Apr 2012 00:54:36 +0000 (00:54 +0000)]
Use ConstantExpr::getExtractElement when constant-folding vectors
instead of getAggregateElement. This has the advantage of being
more consistent and allowing higher-level constant folding to
procede even if an inner extract element cannot be folded.
Make ConstantFoldInstruction call ConstantFoldConstantExpression
on the instruction's operands, making it more consistent with
ConstantFoldConstantExpression itself. This makes sure that
ConstantExprs get TargetData-aware folding before being handed
off as operands for further folding.
This causes more expressions to be folded, but due to a known
shortcoming in constant folding, this currently has the side effect
of stripping a few more nuw and inbounds flags in the non-targetdata
side of constant-fold-gep.ll. This is mostly harmless.
This fixes rdar://
11324230.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155682
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Thu, 26 Apr 2012 23:33:11 +0000 (23:33 +0000)]
Break up getProfitableChainIncrement().
The required checks are moved to ChainInstruction() itself and the
policy decisions are moved to IVChain::isProfitableInc().
Also cache the ExprBase in IVChain to avoid frequent recomputations.
No functional change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155676
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Thu, 26 Apr 2012 23:33:09 +0000 (23:33 +0000)]
Turn IVChain into a struct.
No functional change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155675
91177308-0d34-0410-b5e6-
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Chad Rosier [Thu, 26 Apr 2012 23:29:14 +0000 (23:29 +0000)]
Add instcombine patterns for the following transformations:
(x & y) | (x ^ y) -> x | y
(x & y) + (x ^ y) -> x | y
Patch by Manman Ren.
rdar://
10770603
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155674
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 26 Apr 2012 22:07:28 +0000 (22:07 +0000)]
DumpSegment64Command() wasn't returning correct result. Caught by static analyzer. rdar://
11329354
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155669
91177308-0d34-0410-b5e6-
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Andrew Trick [Thu, 26 Apr 2012 21:48:25 +0000 (21:48 +0000)]
Fix the SD scheduler to avoid gluing the same node twice.
DAGCombine strangeness may result in multiple loads from the same
offset. They both may try to glue themselves to another load. We could
insist that the redundant loads glue themselves to each other, but the
beter fix is to bail out from bad gluing at the time we detect it.
Fixes rdar://
11314175: BuildSchedUnits assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155668
91177308-0d34-0410-b5e6-
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Ted Kremenek [Thu, 26 Apr 2012 20:54:27 +0000 (20:54 +0000)]
Defensively guard against calling malloc() with a size of zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155661
91177308-0d34-0410-b5e6-
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Jim Grosbach [Thu, 26 Apr 2012 20:48:12 +0000 (20:48 +0000)]
ARM: Thumb ldr(literal) base address alignment is 32-bits.
The base address for the PC-relative load is Align(PC,4), so it's the
address of the word containing the 16-bit instruction, not the address
of the instruction itself. Ugh.
rdar://
11314619
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155659
91177308-0d34-0410-b5e6-
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Joerg Sonnenberger [Thu, 26 Apr 2012 20:10:07 +0000 (20:10 +0000)]
Add note about returns_twice magic removal from LLVM itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155657
91177308-0d34-0410-b5e6-
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Preston Gurd [Thu, 26 Apr 2012 19:52:27 +0000 (19:52 +0000)]
Trivial change to set UseLeaForSP flag in addition to toggling
the FeatureLeaForSP feature bit when llvm auto detects Intel Atom.
Patch by Andy Zhang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155655
91177308-0d34-0410-b5e6-
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Michael J. Spencer [Thu, 26 Apr 2012 19:43:35 +0000 (19:43 +0000)]
[CMake] Restructure how Clang, Polly and other external projects get included.
While making lld build under the tools directory I decided to refactor how this
works.
There is now a macro, add_llvm_external_project, which takes the name of the
expected subdirectory. This sets up two CMake options.
* LLVM_EXTERNAL_${NAME}_SOURCE_DIR
This is the path to the source. It defaults to
${CMAKE_CURRENT_SOURCE_DIR}/${name}.
* LLVM_EXTERNAL_${NAME}_BUILD
Enable and disable building the tool as part of LLVM.
I chose LLVM_EXTERNAL_${NAME} as a prefix so they all show up together in the
GUI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155654
91177308-0d34-0410-b5e6-
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Michael J. Spencer [Thu, 26 Apr 2012 19:27:11 +0000 (19:27 +0000)]
[Support/YAML] Properly fix unitialized variable warning by inserting a
'REPLACEMENT CHARACTER' (U+FFFD) when getAsInteger fails.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155653
91177308-0d34-0410-b5e6-
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Stepan Dyatkovskiy [Thu, 26 Apr 2012 18:45:24 +0000 (18:45 +0000)]
Fixed SmallMap test. The order of items is undefined in DenseMap. So being checking the increment for big mode, we can only check that all items are in map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155651
91177308-0d34-0410-b5e6-
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Tim Northover [Thu, 26 Apr 2012 08:46:29 +0000 (08:46 +0000)]
Use VLD1 in NEON extenting-load patterns instead of VLDR.
On some cores it's a bad idea for performance to mix VFP and NEON instructions
and since these patterns are NEON anyway, the NEON load should be used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155630
91177308-0d34-0410-b5e6-
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Tim Northover [Thu, 26 Apr 2012 08:24:07 +0000 (08:24 +0000)]
Test commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155626
91177308-0d34-0410-b5e6-
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Craig Topper [Thu, 26 Apr 2012 06:40:15 +0000 (06:40 +0000)]
Enable detection of AVX and AVX2 support through CPUID. Add AVX/AVX2 to corei7-avx, core-avx-i, and core-avx2 cpu names.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155618
91177308-0d34-0410-b5e6-
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Chandler Carruth [Thu, 26 Apr 2012 05:30:30 +0000 (05:30 +0000)]
Teach the reassociate pass to fold chains of multiplies with repeated
elements to minimize the number of multiplies required to compute the
final result. This uses a heuristic to attempt to form near-optimal
binary exponentiation-style multiply chains. While there are some cases
it misses, it seems to at least a decent job on a very diverse range of
inputs.
Initial benchmarks show no interesting regressions, and an 8%
improvement on SPASS. Let me know if any other interesting results (in
either direction) crop up!
Credit to Richard Smith for the core algorithm, and helping code the
patch itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155616
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 26 Apr 2012 01:38:10 +0000 (01:38 +0000)]
Specify cpu to unbreak tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155604
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 26 Apr 2012 01:13:36 +0000 (01:13 +0000)]
If triple is armv7 / thumbv7 and a CPU is specified, do not automatically assume
the feature set of v7a. This comes about if the user specifies something like
-arch armv7 -mcpu=cortex-m3. We shouldn't be generating instructions such as
uxtab in this case.
rdar://
11318438
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155601
91177308-0d34-0410-b5e6-
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Bill Wendling [Thu, 26 Apr 2012 00:38:42 +0000 (00:38 +0000)]
Don't forget to reset 'first operand' flag when we're setting the MDNodeOperand value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155599
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 21:22:33 +0000 (21:22 +0000)]
Try to fix llvm-arm-linux builder with -mcpu.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155589
91177308-0d34-0410-b5e6-
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Preston Gurd [Wed, 25 Apr 2012 21:04:54 +0000 (21:04 +0000)]
Trivial change to make the test use -mcpu=generic so as to avoid
a failure if run on an Intel Atom with post RA instruction scheduling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155587
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Wed, 25 Apr 2012 18:01:58 +0000 (18:01 +0000)]
Reapply the SmallMap patch with a fix.
Comparing ~0UL with an unsigned will always return false when long is 64 bits long.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155568
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 18:01:32 +0000 (18:01 +0000)]
Print IV chain numbers while collecting them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155567
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 18:01:30 +0000 (18:01 +0000)]
Remove more dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155566
91177308-0d34-0410-b5e6-
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Richard Barton [Wed, 25 Apr 2012 18:00:18 +0000 (18:00 +0000)]
Unify internal representation of ARM instructions with a register right-shifted by #32. These are stored as shifts by #0 in the MCInst and correctly marshalled when transforming from or to assembly representation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155565
91177308-0d34-0410-b5e6-
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Eric Christopher [Wed, 25 Apr 2012 17:51:00 +0000 (17:51 +0000)]
Revert "First implementation of:"
This reverts commit
76271a3366731d4c372fdebcd8d3437e6e09a61b.
as it's breaking the bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155562
91177308-0d34-0410-b5e6-
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Stepan Dyatkovskiy [Wed, 25 Apr 2012 17:09:38 +0000 (17:09 +0000)]
First implementation of:
- FlatArrayMap. Very simple map container that uses flat array inside.
- MultiImplMap. Map container interface, that has two modes, one for small amount of elements and one for big amount.
- SmallMap. SmallMap is DenseMap compatible MultiImplMap. It uses FlatArrayMap for small mode, and DenseMap for big mode.
Also added unittests for new classes and update for ProgrammersManual.
For more details about new classes see ProgrammersManual and comments in sourcecode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155557
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 16:32:23 +0000 (16:32 +0000)]
Simplify LiveIntervals::getApproximateInstructionCount().
This function is only used for a heuristic during -join-physregs. It
doesn't need floating point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155554
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 16:32:20 +0000 (16:32 +0000)]
Remove a dead function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155553
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 16:17:50 +0000 (16:17 +0000)]
Remove the -disable-cross-class-join option.
Cross-class joins have been normal and fully supported for a while now.
With TableGen generating the getMatchingSuperRegClass() hook, they are
unlikely to cause problems again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155552
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 25 Apr 2012 16:17:47 +0000 (16:17 +0000)]
Cross-class joining is winning.
Remove the heuristic for disabling cross-class joins. The greedy
register allocator can handle the narrow register classes, and when it
splits a live range, it can pick a larger register class.
Benchmarks were unaffected by this change.
<rdar://problem/
11302212>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155551
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Craig Topper [Wed, 25 Apr 2012 06:56:34 +0000 (06:56 +0000)]
Add ifdef around getSubtargetFeatureName in tablegen output file so that only targets that want the function get it. This prevents other targets from getting an unused function warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155538
91177308-0d34-0410-b5e6-
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Craig Topper [Wed, 25 Apr 2012 06:39:39 +0000 (06:39 +0000)]
Use vector_shuffles instead of target specific unpack nodes for AVX ZERO_EXTEND/ANY_EXTEND combine. These will be converted to target specific nodes during lowering. This is more consistent with other code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155537
91177308-0d34-0410-b5e6-
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Chris Lattner [Wed, 25 Apr 2012 06:37:20 +0000 (06:37 +0000)]
openbsd doesn't support soname, patch by Brad Smith!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155536
91177308-0d34-0410-b5e6-
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Chandler Carruth [Wed, 25 Apr 2012 02:30:00 +0000 (02:30 +0000)]
Actually delete now-empty file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155532
91177308-0d34-0410-b5e6-
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Lang Hames [Wed, 25 Apr 2012 02:16:54 +0000 (02:16 +0000)]
Reverting r155468. Chris and Chandler have convinced me that it's dangerous and
in poor taste.
Talking through some alternate solutions with Chandler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155530
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Akira Hatanaka [Wed, 25 Apr 2012 01:24:52 +0000 (01:24 +0000)]
Do not use $gp as a dedicated global register if the target ABI is not O32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155522
91177308-0d34-0410-b5e6-
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Andrew Trick [Wed, 25 Apr 2012 01:11:22 +0000 (01:11 +0000)]
typo in declaration from earlier today
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155519
91177308-0d34-0410-b5e6-
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Dan Gohman [Wed, 25 Apr 2012 00:50:46 +0000 (00:50 +0000)]
Simplify the known retain count tracking; use a boolean state instead
of a precise count. Also, move RRInfo's Partial field into PtrState,
now that it won't increase the size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155513
91177308-0d34-0410-b5e6-
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Dan Gohman [Tue, 24 Apr 2012 22:53:18 +0000 (22:53 +0000)]
Build custom predecessor and successor lists for each basic block.
These lists exclude invoke unwind edges and loop backedges which
are being ignored. This makes it easier to ignore them
consistently.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155500
91177308-0d34-0410-b5e6-
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Jim Grosbach [Tue, 24 Apr 2012 22:40:08 +0000 (22:40 +0000)]
ARM: improved assembler diagnostics for missing CPU features.
When an instruction match is found, but the subtarget features it
requires are not available (missing floating point unit, or thumb vs arm
mode, for example), issue a diagnostic that identifies what the feature
mismatch is.
rdar://
11257547
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155499
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Andrew Trick [Tue, 24 Apr 2012 20:36:19 +0000 (20:36 +0000)]
Fix a naughty header include that breaks "installed" builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155486
91177308-0d34-0410-b5e6-
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Nadav Rotem [Tue, 24 Apr 2012 20:18:49 +0000 (20:18 +0000)]
ConstantFoldSelectInstruction swapped the operands of the select.
Fix 12592. Patch by Matt Pharr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155480
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Nadav Rotem [Tue, 24 Apr 2012 19:57:38 +0000 (19:57 +0000)]
Fix the testcase. We do expect two vblendw on XMMs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155477
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Nadav Rotem [Tue, 24 Apr 2012 19:45:28 +0000 (19:45 +0000)]
Add a testcase for 155440
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155475
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Evan Cheng [Tue, 24 Apr 2012 19:06:55 +0000 (19:06 +0000)]
MachineBasicBlock::SplitCriticalEdge() should follow LLVM IR variant and refuse to break edge to EH landing pad. rdar://
11300144
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155470
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Lang Hames [Tue, 24 Apr 2012 18:58:36 +0000 (18:58 +0000)]
Add support for llvm.arm.neon.vmull* intrinsics to InstCombine. This fixes
<rdar://problem/
11291436>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155468
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Chandler Carruth [Tue, 24 Apr 2012 18:42:47 +0000 (18:42 +0000)]
Fix a crash on valid (if UB) bitcode that is produced for some global
constants in C++11 mode. I have no idea why it required such particular
circumstances to get here, the code seems clearly to rely upon unchecked
assumptions.
Specifically, when we decide to form an index into a struct type, we may
have gone through (at least one) zero-length array indexing round, which
would have left the offset un-adjusted, and thus not necessarily valid
for use when indexing the struct type.
This is just an canonicalization step, so the correct thing is to refuse
to canonicalize nonsensical GEPs of this form. Implemented, and test
case added.
Fixes PR12642. Pair debugged and coded with Richard Smith. =] I credit
him with most of the debugging, and preventing me from writing the wrong
code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155466
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Jim Grosbach [Tue, 24 Apr 2012 18:39:47 +0000 (18:39 +0000)]
ARM: Nuke remnant bogus code.
r154362 was supposed to delete this bit, but obviously didn't.
rdar://
11305594
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155465
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Stepan Dyatkovskiy [Tue, 24 Apr 2012 18:31:10 +0000 (18:31 +0000)]
Related to PR1255. Let's begin. I'll commit classes that corresponds to our latest PR1255 discussion posts in llvm-commits.
Strategy.
0. Implement new classes. Classes doesn't affect anything. They still work with ConstantInt base values at this stage.
1. Fictitious replacement of current ConstantInt case values with ConstantRangesSet. Case ranges set will still hold single value, and ConstantInt *getCaseValue() will return it. But additionally implement new method in SwitchInst that allows to work with case ranges. Currenly I think it should be some wrapper that returns either single value or ConstantRangesSet object.
2. Step-by-step replacement of old "ConstantInt* getCaseValue()" with new alternative. Modify algorithms for all passes that works with SwitchInst. But don't modify LLParser and BitcodeReader/Writer. Still hold single value in each ConstantRangesSet object. On this stage some parts of LLVM will use old-style methods, and some ones new-style.
3. After all getCaseValue() usages will removed and whole LLVM and its clients will work in new style - modify LLParser, Reader and Writer. Remove getCaseValue().
4. Replace ConstantInt*-based case ranges set items with APInt ones.
Currently we are on Zero Stage: New classes.
ConstantRangesSet.
I selected ConstantArrays as case ranges set "holder" object (it is a temporary decision, I'll explain why below). The array items are may be ConstantVectors with single item, and ConstantVectors with two items (that means single number and range respectively).
The ConstantInt will used as basic value representation. It will replaced with APInt then. Of course ConstantArray and ConstantVector will go away after ConstantInt => APInt replacement.
New class mandatory features:
- bool isSatisfies(ConstantInt *V) method (need better name?). Returns true if the given value satisfies this case.
- Case's ranges and values enumeration. In some passes we need to analize each case (SwitchLowering for example).
Factory + unified clusterify.
I also propose to implement the factory that allows to build case object with user friendly way. I called it CRSBuilder by now.
Currenly I implemented the factory that allows add,remove pairs of range+successor. It also allows add existing ConstantRangesSet decompiling it to separated ranges. Factory can emit either clusters set (single case range + successor) or the set of "ConstantRangesSet + Successor" pairs.
So you can use it either as builder for new cases set for SwitchInst, or for clusterification of existing cases set.
Just call Factory.optimize() and it emits optimized and sorted clusters collection for you!
I tested clusterification on SelectionDAGBuilder - it works fine. Don't worry it was not included in this patch. Just new classes.
Factory is a template. There are two params: SuccessorClass and IsReadonly. So you can specify what successor you need (BB or MBB). And you can also restrict your factory to use values in read-only mode (SelectionDAGBuilder need IsReadonly=true). Read-only factory couldn't build the cases ranges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155464
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Nadav Rotem [Tue, 24 Apr 2012 18:09:59 +0000 (18:09 +0000)]
AVX: Add additional vbroadcast replacement sequences for integers.
Remove the v2f64 patterns because it does not match any vbroadcast
instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155461
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Andrew Trick [Tue, 24 Apr 2012 18:06:49 +0000 (18:06 +0000)]
cmake: new file
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155460
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Andrew Trick [Tue, 24 Apr 2012 18:04:41 +0000 (18:04 +0000)]
misched: DAG builder must special case earlyclobber
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155459
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Andrew Trick [Tue, 24 Apr 2012 18:04:37 +0000 (18:04 +0000)]
misched: try (not too hard) to place debug values where they belong
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155458
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Andrew Trick [Tue, 24 Apr 2012 18:04:34 +0000 (18:04 +0000)]
misched: ignore debug values during scheduling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155457
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Andrew Trick [Tue, 24 Apr 2012 17:56:43 +0000 (17:56 +0000)]
misched: DAG builder support for tracking register pressure within the current scheduling region.
The DAG builder is a convenient place to do it. Hopefully this is more
efficient than a separate traversal over the same region.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155456
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Andrew Trick [Tue, 24 Apr 2012 17:53:35 +0000 (17:53 +0000)]
RegisterPressure: A utility for computing register pressure within a
MachineInstr sequence.
This uses the new target interface for tracking register pressure
using pressure sets to model overlapping register classes and
subregisters.
RegisterPressure results can be tracked incrementally or stored at
region boundaries. Global register pressure can be deduced from local
RegisterPressure results if desired.
This is an early, somewhat untested implementation. I'm working on
testing it within the context of a register pressure reducing
MachineScheduler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155454
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Kevin Enderby [Tue, 24 Apr 2012 17:45:56 +0000 (17:45 +0000)]
Add missing test cases for ARM VLD3 (single 3-element structure to all lanes)
instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155453
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Kevin Enderby [Tue, 24 Apr 2012 15:55:00 +0000 (15:55 +0000)]
Add missing test cases for ARM VLD4 (single 4-element structure to all lanes)
instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155444
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Nadav Rotem [Tue, 24 Apr 2012 11:27:53 +0000 (11:27 +0000)]
AVX2: The BLENDPW instruction selects between vectors of v16i16 using an i8
immediate. We can't use it here because the shuffle code does not check that
the lower part of the word is identical to the upper part.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155440
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Richard Barton [Tue, 24 Apr 2012 11:13:20 +0000 (11:13 +0000)]
Refactor Thumb ITState handling in ARM Disassembler to more efficiently use its vector
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155439
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Nadav Rotem [Tue, 24 Apr 2012 11:07:03 +0000 (11:07 +0000)]
AVX: We lower VECTOR_SHUFFLE and BUILD_VECTOR nodes into vbroadcast instructions
using the pattern (vbroadcast (i32load src)). In some cases, after we generate
this pattern new users are added to the load node, which prevent the selection
of the blend pattern. This commit provides fallback patterns which perform
in-vector broadcast (using in-vector vbroadcast in AVX2 and pshufd on AVX1).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155437
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Bill Wendling [Tue, 24 Apr 2012 11:03:50 +0000 (11:03 +0000)]
Look for the 'Is Simulated' module flag. This indicates that the program is compiled to run on a simulator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155435
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Bill Wendling [Tue, 24 Apr 2012 10:45:44 +0000 (10:45 +0000)]
FileCheck-ize tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155434
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Bill Wendling [Tue, 24 Apr 2012 10:36:42 +0000 (10:36 +0000)]
FileCheck-ize these tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155433
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Bill Wendling [Tue, 24 Apr 2012 09:15:38 +0000 (09:15 +0000)]
FileCheck-ize these tests. Harden some of them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155432
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Craig Topper [Tue, 24 Apr 2012 06:36:35 +0000 (06:36 +0000)]
Remove dangling spaces. Fix some other formatting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155429
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Craig Topper [Tue, 24 Apr 2012 06:02:29 +0000 (06:02 +0000)]
Simplify code a bit and make it compile better. Remove unused parameters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155428
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Evan Cheng [Mon, 23 Apr 2012 22:41:39 +0000 (22:41 +0000)]
Add a missing cpu subtype.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155402
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Jim Grosbach [Mon, 23 Apr 2012 22:04:10 +0000 (22:04 +0000)]
Tidy up. 80 columns, whitespace, et. al.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155399
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Nadav Rotem [Mon, 23 Apr 2012 21:53:37 +0000 (21:53 +0000)]
Optimize the vector UINT_TO_FP, SINT_TO_FP and FP_TO_SINT operations where the integer type is i8 (commonly used in graphics).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155397
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Preston Gurd [Mon, 23 Apr 2012 21:39:35 +0000 (21:39 +0000)]
This patch fixes a problem which arose when using the Post-RA scheduler
on X86 Atom. Some of our tests failed because the tail merging part of
the BranchFolding pass was creating new basic blocks which did not
contain live-in information. When the anti-dependency code in the Post-RA
scheduler ran, it would sometimes rename the register containing
the function return value because the fact that the return value was
live-in to the subsequent block had been lost. To fix this, it is necessary
to run the RegisterScavenging code in the BranchFolding pass.
This patch makes sure that the register scavenging code is invoked
in the X86 subtarget only when post-RA scheduling is being done.
Post RA scheduling in the X86 subtarget is only done for Atom.
This patch adds a new function to the TargetRegisterClass to control
whether or not live-ins should be preserved during branch folding.
This is necessary in order for the anti-dependency optimizations done
during the PostRASchedulerList pass to work properly when doing
Post-RA scheduling for the X86 in general and for the Intel Atom in particular.
The patch adds and invokes the new function trackLivenessAfterRegAlloc()
instead of using the existing requiresRegisterScavenging().
It changes BranchFolding.cpp to call trackLivenessAfterRegAlloc() instead of
requiresRegisterScavenging(). It changes the all the targets that
implemented requiresRegisterScavenging() to also implement
trackLivenessAfterRegAlloc().
It adds an assertion in the Post RA scheduler to make sure that post RA
liveness information is available when it is needed.
It changes the X86 break-anti-dependencies test to use –mcpu=atom, in order
to avoid running into the added assertion.
Finally, this patch restores the use of anti-dependency checking
(which was turned off temporarily for the 3.1 release) for
Intel Atom in the Post RA scheduler.
Patch by Andy Zhang!
Thanks to Jakob and Anton for their reviews.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155395
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Jim Grosbach [Mon, 23 Apr 2012 21:22:04 +0000 (21:22 +0000)]
ARM: VSLI two-operand assmebly aliases are tblgen'erated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155393
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Jim Grosbach [Mon, 23 Apr 2012 21:00:49 +0000 (21:00 +0000)]
ARM: tblgen'erate VSRA/VRSRA/VSRI assembly two-operand aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155392
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Jim Grosbach [Mon, 23 Apr 2012 21:00:47 +0000 (21:00 +0000)]
ARM: Add testcases for two-operand variants of VSRA/VRSRA/VSRI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155391
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Jim Grosbach [Mon, 23 Apr 2012 21:00:44 +0000 (21:00 +0000)]
Add ARM mode tests for the NEON vector shift-accumulate tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155390
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Jim Grosbach [Mon, 23 Apr 2012 21:00:42 +0000 (21:00 +0000)]
Tidy up. Reformat for ease of reading.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155389
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Jim Grosbach [Mon, 23 Apr 2012 20:37:20 +0000 (20:37 +0000)]
ARM: vqdmulh two-operand aliases are tblgen'erated now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155387
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Michael J. Spencer [Mon, 23 Apr 2012 19:00:27 +0000 (19:00 +0000)]
[Support/Unix] Unconditionally include time.h.
When building LLVM on Linux with libc++ with CMake TIME_WITH_SYS_TIME is
undefined, and HAVE_SYS_TIME_H is defined. This ends up including
sys/time.h but not time.h. Unix/TimeValue.inc requires time.h for asctime_r
and localtime. libstdc++ seems to include time.h anyway, but libc++ does
not.
Fix this by always including time.h
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155382
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Eric Christopher [Mon, 23 Apr 2012 19:00:11 +0000 (19:00 +0000)]
Allow forward declarations to take a context. This helps the debugger
find forward declarations in the context that the actual definition
will occur.
rdar://
11291658
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155380
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Chandler Carruth [Mon, 23 Apr 2012 18:28:57 +0000 (18:28 +0000)]
Temporarily revert r155364 until the upstream review can complete, per
the stated developer policy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155373
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Chandler Carruth [Mon, 23 Apr 2012 18:25:57 +0000 (18:25 +0000)]
Revert r155365, r155366, and r155367. All three of these have regression
test suite failures. The failures occur at each stage, and only get
worse, so I'm reverting all of them.
Please resubmit these patches, one at a time, after verifying that the
regression test suite passes. Never submit a patch without running the
regression test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155372
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