Renato Golin [Wed, 25 Feb 2015 14:41:06 +0000 (14:41 +0000)]
Improve handling of stack accesses in Thumb-1
Thumb-1 only allows SP-based LDR and STR to be word-sized, and SP-base LDR,
STR, and ADD only allow offsets that are a multiple of 4. Make some changes
to better make use of these instructions:
* Use word loads for anyext byte and halfword loads from the stack.
* Enforce 4-byte alignment on objects accessed in this way, to ensure that
the offset is valid.
* Do the same for objects whose frame index is used, in order to avoid having
to use more than one ADD to generate the frame index.
* Correct how many bits of offset we think AddrModeT1_s has.
Patch by John Brawn.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230496
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Aaron Ballman [Wed, 25 Feb 2015 13:05:24 +0000 (13:05 +0000)]
Silencing a "result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)" warning in MSVC; NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230489
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Aaron Ballman [Wed, 25 Feb 2015 13:02:23 +0000 (13:02 +0000)]
Silencing a -Wsign-compare warning triggered in MSVC; NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230488
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Vladimir Medic [Wed, 25 Feb 2015 11:43:01 +0000 (11:43 +0000)]
Replace obsolete -mattr=n64 command line option with -target-abi=n64. No functional changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230482
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NAKAMURA Takumi [Wed, 25 Feb 2015 11:04:36 +0000 (11:04 +0000)]
GlobalLayoutBuilder::addFragment(): Prune incorrect usage of \param(s). [-Wdocumentation]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230480
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NAKAMURA Takumi [Wed, 25 Feb 2015 11:02:00 +0000 (11:02 +0000)]
Fix UTF8 chars to ASCII.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230479
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Elena Demikhovsky [Wed, 25 Feb 2015 09:46:31 +0000 (09:46 +0000)]
AVX-512: Gather and Scatter patterns
Gather and scatter instructions additionally write to one of the source operands - mask register.
In this case Gather has 2 destination values - the loaded value and the mask.
Till now we did not support code gen pattern for gather - the instruction was generated from
intrinsic only and machine node was hardcoded.
When we introduce the masked_gather node, we need to select instruction automatically,
in the standard way.
I added a flag "hasTwoExplicitDefs" that allows to handle 2 destination operands.
(Some code in the X86InstrFragmentsSIMD.td is commented out, just to split one big
patch in many small patches)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230471
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Charles Davis [Wed, 25 Feb 2015 05:10:25 +0000 (05:10 +0000)]
[IC] Turn non-null MD on pointer loads to range MD on integer loads.
Summary:
This change fixes the FIXME that you recently added when you committed
(a modified version of) my patch. When `InstCombine` combines a load and
store of an pointer to those of an equivalently-sized integer, it currently
drops any `!nonnull` metadata that might be present. This change replaces
`!nonnull` metadata with `!range !{ 1, -1 }` metadata instead.
Reviewers: chandlerc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D7621
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230462
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Richard Smith [Wed, 25 Feb 2015 03:12:03 +0000 (03:12 +0000)]
Add some missing #includes and forward declarations found by modules build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230457
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Saleem Abdulrasool [Wed, 25 Feb 2015 02:38:03 +0000 (02:38 +0000)]
build: check if atomic routines are implicitly provided
It is possible for the atomic routines to be provided by the compiler without
requiring any additional libraries. Check if that is the case before checking
for a library.
Patch by Matt Glazar!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230452
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Richard Smith [Wed, 25 Feb 2015 01:44:09 +0000 (01:44 +0000)]
[modules] Add include/llvm/IR/DebugInfoFlags.def to the textual headers list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230427
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Hal Finkel [Wed, 25 Feb 2015 01:26:59 +0000 (01:26 +0000)]
[PowerPC] Add triples to QPX tests
Some of these tests fail on Darwin systems because of a lack of a triple;
fix that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230421
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Philip Reames [Wed, 25 Feb 2015 01:23:59 +0000 (01:23 +0000)]
[GC] Document the recently added PlaceSafepoints and RewriteGCForStatepoints passes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230420
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Duncan P. N. Exon Smith [Wed, 25 Feb 2015 01:10:03 +0000 (01:10 +0000)]
llvm-dis: Stop crashing when dropping debug info
Since r199356, we've printed a warning when dropping debug info.
r225562 started crashing on that, since it registered a diagnostic
handler that only expected errors. This fixes the handler to expect
other severities. As a side effect, it now prints "error: " at the
start of error messages, similar to `llvm-as`.
There was a testcase for r199356, but it only really checked the
assembler. Move `test/Bitcode/drop-debug-info.ll` to `test/Assembler`,
and introduce `test/Bitcode/drop-debug-info.3.5.ll` (and companion
`.bc`) to test the bitcode reader.
Note: tools/gold/gold-plugin.cpp has an equivalent bug, but I'm not sure
what the best fix is there. I'll file a PR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230416
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David Blaikie [Wed, 25 Feb 2015 01:08:52 +0000 (01:08 +0000)]
[opaque pointer type] Bitcode support for explicit type parameter on GEP.
Like r230414, add bitcode support including backwards compatibility, for
an explicit type parameter to GEP.
At the suggestion of Duncan I tried coalescing the two older bitcodes into a
single new bitcode, though I did hit a wrinkle: I couldn't figure out how to
create an explicit abbreviation for a record with a variable number of
arguments (the indicies to the gep). This means the discriminator between
inbounds and non-inbounds gep is a full variable-length field I believe? Is my
understanding correct? Is there a way to create such an abbreviation? Should I
just use two bitcodes as before?
Reviewers: dexonsmith
Differential Revision: http://reviews.llvm.org/D7736
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230415
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David Blaikie [Wed, 25 Feb 2015 01:07:20 +0000 (01:07 +0000)]
[opaque pointer type] bitcode support for explicit type parameter to the load instruction
Summary:
I've taken my best guess at this, but I've cargo culted in places & so
explanations/corrections would be great.
This seems to pass all the tests (check-all, covering clang and llvm) so I
believe that pretty well exercises both the backwards compatibility and common
(same version) compatibility given the number of checked in bitcode files we
already have. Is that a reasonable approach to testing here? Would some more
explicit tests be desired?
1) is this the right way to do back-compat in this case (looking at the number
of entries in the bitcode record to disambiguate between the old schema and
the new?)
2) I don't quite understand the logarithm logic to choose the encoding type of
the type parameter in the abbreviation description, but I found another
instruction doing the same thing & it seems to work. Is that the right
approach?
Reviewers: dexonsmith
Differential Revision: http://reviews.llvm.org/D7655
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230414
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Hal Finkel [Wed, 25 Feb 2015 01:06:45 +0000 (01:06 +0000)]
[PowerPC] Add support for the QPX vector instruction set
This adds support for the QPX vector instruction set, which is used by the
enhanced A2 cores on the IBM BG/Q supercomputers. QPX vectors are 256 bytes
wide, holding 4 double-precision floating-point values. Boolean values, modeled
here as <4 x i1> are actually also represented as floating-point values
(essentially { -1, 1 } for { false, true }). QPX shares many features with
Altivec and VSX, but is distinct from both of them. One major difference is
that, instead of adding completely-separate vector registers, QPX vector
registers are extensions of the scalar floating-point registers (lane 0 is the
corresponding scalar floating-point value). The operations supported on QPX
vectors mirrors that supported on the scalar floating-point values (with some
additional ones for permutations and logical/comparison operations).
I've been maintaining this support out-of-tree, as part of the bgclang project,
for several years. This is not the entire bgclang patch set, but is most of the
subset that can be cleanly integrated into LLVM proper at this time. Adding
this to the LLVM backend is part of my efforts to rebase bgclang to the current
LLVM trunk, but is independently useful (especially for codes that use LLVM as
a JIT in library form).
The assembler/disassembler test coverage is complete. The CodeGen test coverage
is not, but I've included some tests, and more will be added as follow-up work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230413
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Rafael Espindola [Wed, 25 Feb 2015 00:52:15 +0000 (00:52 +0000)]
Support SHF_MERGE sections in COMDATs.
This patch unifies the comdat and non-comdat code paths. By doing this
it add missing features to the comdat side and removes the fixed
section assumptions from the non-comdat side.
In ELF there is no one true section for "4 byte mergeable" constants.
We are better off computing the required properties of the section
and asking the context for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230411
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David Blaikie [Wed, 25 Feb 2015 00:51:52 +0000 (00:51 +0000)]
BitcodeWriter: Refactor common computation of bits required for a type index.
Suggested by Duncan. Happy to bikeshed the name, cache the result, etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230410
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Philip Reames [Wed, 25 Feb 2015 00:22:07 +0000 (00:22 +0000)]
Fix consistently wrong sphinx markup
I'd been using '' where I should have been using ``.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230407
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Philip Reames [Wed, 25 Feb 2015 00:18:04 +0000 (00:18 +0000)]
Update the GC docs to explicitly mention both gcroot and gc.statepoint
Also, fix confusing bit of the gcroot documentation that bit me personally.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230405
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Eric Christopher [Wed, 25 Feb 2015 00:12:11 +0000 (00:12 +0000)]
Make this test even more OS and register allocation neutral.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230404
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Philip Reames [Tue, 24 Feb 2015 23:57:26 +0000 (23:57 +0000)]
[GC] Sync documentation with code naming
Fixing an issue pointed out by Sean Silva. Thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230403
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Philip Reames [Tue, 24 Feb 2015 23:51:37 +0000 (23:51 +0000)]
More GC documentation cleanup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230402
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Eric Christopher [Tue, 24 Feb 2015 23:43:26 +0000 (23:43 +0000)]
Make this test not dependent upon the triple. All that was needed
was some flexibility in the check line for the comment basic block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230400
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Philip Reames [Tue, 24 Feb 2015 23:34:24 +0000 (23:34 +0000)]
More GC doc cleanup
Mostly minor wording changes for readability. Nothing major to see here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230397
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Zachary Turner [Tue, 24 Feb 2015 23:32:47 +0000 (23:32 +0000)]
[CMake] Set policy CMP0051 to OLD globally.
When you use generator expressions in a library sources list,
and then later access the SOURCES property, the OLD behavior
(CMake 3.0 and earlier) would not include these expressions in
the SOURCES property. The NEW behavior (starting in CMake 3.1)
is that they do include the generator expressions in the SOURCES
property.
Differential Revision: http://reviews.llvm.org/D7870
Reviewed By: Chris Bieneman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230396
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Peter Collingbourne [Tue, 24 Feb 2015 23:17:02 +0000 (23:17 +0000)]
LowerBitSets: Introduce global layout builder.
The builder is based on a layout algorithm that tries to keep members of
small bit sets together. The new layout compresses Chromium's bit sets to
around 15% of their original size.
Differential Revision: http://reviews.llvm.org/D7796
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230394
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Philip Reames [Tue, 24 Feb 2015 23:12:27 +0000 (23:12 +0000)]
Improve the getting started instructions in the GC docs
This is still gcroot vs gc.statepoint agnostic. I'm just trying to clarify the general documentation at this point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230393
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David Majnemer [Tue, 24 Feb 2015 23:08:13 +0000 (23:08 +0000)]
PrologEpilogInserter: Clean up math in calculateFrameObjectOffsets
There is no need to open-code the alignment calculation, we have a
handy RoundUpToAlignment function which "Does The Right Thing (TM)".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230392
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Sanjay Patel [Tue, 24 Feb 2015 22:43:06 +0000 (22:43 +0000)]
remove function names from comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230391
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Simon Pilgrim [Tue, 24 Feb 2015 22:08:56 +0000 (22:08 +0000)]
Reapplied D7816 & rL230177 & rL230278 - with an additional fix toensure that the smallest build vector input scalar type is always used. Additional (crash) test cases already committed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230388
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Simon Pilgrim [Tue, 24 Feb 2015 21:46:23 +0000 (21:46 +0000)]
Added test case for PR22678 (check CONCAT_VECTORS DAG combiner pass doesn't introduce illegal types)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230386
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Justin Bogner [Tue, 24 Feb 2015 21:42:42 +0000 (21:42 +0000)]
InstrProf: Test for appropriate linkage of the profiling structures
This test checks that the symbols instrprof creates have appropriate
linkage. The tests already exist in clang in a slightly different form
from before we sunk profile generation into an LLVM pass, but that's
an awkward place for them now. I'll remove/simplify the clang versions
shortly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230383
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Andrew Kaylor [Tue, 24 Feb 2015 20:49:35 +0000 (20:49 +0000)]
Fixing eol-style
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230378
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Hans Wennborg [Tue, 24 Feb 2015 20:36:40 +0000 (20:36 +0000)]
ReleaseNotes: add notes about VS2014 Update 4 requirement
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230363
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Arch D. Robison [Tue, 24 Feb 2015 20:11:49 +0000 (20:11 +0000)]
Fix typo: qual -> equal
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230361
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Philip Reames [Tue, 24 Feb 2015 19:44:46 +0000 (19:44 +0000)]
Starting to cleanup the garbage collection documentation
In this change:
- Put the getting started section first
- Create a dedicated section to document the built in collector strategies
- Move discuss of ShadowStack into new section
- Add placeholders for erlang, ocaml, and statepoint-example collectors
There will be many more changes following. I plan on full integrating the documentation for gc.statepoint and gc.root. I want to make it much clearer on how to get started and what users should expect in terms of effort.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230359
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Eric Christopher [Tue, 24 Feb 2015 19:11:00 +0000 (19:11 +0000)]
Revert:
Author: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Mon Feb 23 23:04:28 2015 +0000
Fix based on post-commit comment on D7816 & rL230177 - BUILD_VECTOR operand truncation was using the the BV's output scalar type instead of the input type.
and
Author: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Sun Feb 22 18:17:28 2015 +0000
[DagCombiner] Generalized BuildVector Vector Concatenation
The CONCAT_VECTORS combiner pass can transform the concat of two BUILD_VECTOR nodes into a single BUILD_VECTOR node.
This patch generalises this to support any number of BUILD_VECTOR nodes, and also permits UNDEF nodes to be included as well.
This was noticed as AVX vec128 -> vec256 canonicalization sometimes creates a CONCAT_VECTOR with a real vec128 lower and an vec128 UNDEF upper.
Differential Revision: http://reviews.llvm.org/D7816
as the root cause of PR22678 which is causing an assertion inside the DAG combiner.
I'll follow up to the main thread as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230358
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Eric Christopher [Tue, 24 Feb 2015 19:10:57 +0000 (19:10 +0000)]
Rename UpdateRegAllocHint to match style guidelines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230357
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Matthias Braun [Tue, 24 Feb 2015 18:52:04 +0000 (18:52 +0000)]
AArch64: Relax assert about large shift sizes.
The reason why these large shift sizes happen is because OpaqueConstants
currently inhibit alot of DAG combining, but that has to be addressed in
another commit (like the proposal in D6946).
Differential Revision: http://reviews.llvm.org/D6940
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230355
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Matthias Braun [Tue, 24 Feb 2015 18:52:01 +0000 (18:52 +0000)]
DAGCombiner: Move variable definitions closer to use; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230354
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Matthias Braun [Tue, 24 Feb 2015 18:51:59 +0000 (18:51 +0000)]
DAGCombiner: Move variable declaration closer to definiion; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230353
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Tom Stellard [Tue, 24 Feb 2015 17:59:19 +0000 (17:59 +0000)]
R600/SI: Remove isel mubuf legalization
We legalize mubuf instructions post-instruction selection, so this
code is no longer needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230352
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Tim Northover [Tue, 24 Feb 2015 17:22:34 +0000 (17:22 +0000)]
ARM: treat [N x i32] and [N x i64] as AAPCS composite types
The logic is almost there already, with our special homogeneous aggregate
handling. Tweaking it like this allows front-ends to emit AAPCS compliant code
without ever having to count registers or add discarded padding arguments.
Only arrays of i32 and i64 are needed to model AAPCS rules, but I decided to
apply the logic to all integer arrays for more consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230348
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Tobias Grosser [Tue, 24 Feb 2015 16:39:46 +0000 (16:39 +0000)]
Revert "Raising minimum required CMake version to 2.8.12.2."
This reverts commit r230062.
Debian stable (wheezy) ships still with cmake 2.8.9.
The commit broke my LLVM/Polly buildbot, to my knowledge our only Linux+cmake
buildbot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230343
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Sanjay Patel [Tue, 24 Feb 2015 16:26:02 +0000 (16:26 +0000)]
simplify control flow; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230342
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Hans Wennborg [Tue, 24 Feb 2015 16:19:29 +0000 (16:19 +0000)]
Revert r230280: "Bugfix: SCEVExpander incorrectly marks increment operations as no-wrap"
This caused PR22674, failing this assert:
Instructions.h:2281: llvm::Value* llvm::PHINode::getOperand(unsigned int) const: Assertion `i_nocapture < OperandTraits<PHINode>::operands(this) && "getOperand() out of range!"' failed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230341
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Michael Kuperstein [Tue, 24 Feb 2015 16:13:16 +0000 (16:13 +0000)]
[x32] Mark RBX as reserved when EBX is the base pointer.
This should have gone into r230334.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230339
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Sanjay Patel [Tue, 24 Feb 2015 16:11:05 +0000 (16:11 +0000)]
fix typo in comment; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230338
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Michael Kuperstein [Tue, 24 Feb 2015 15:27:13 +0000 (15:27 +0000)]
[x32] x32 should use ebx as the base pointer.
This fixes the original issue in PR22655, but not the secondary one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230334
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Hal Finkel [Tue, 24 Feb 2015 12:59:47 +0000 (12:59 +0000)]
[SDAG] Handle LowerOperation returning its input consistently
For almost all node types, if the target requested custom lowering, and
LowerOperation returned its input, we'd treat the original node as legal. This
did not work, however, for many loads and stores, because they follow
slightly different code paths, and we did not account for the possibility of
LowerOperation returning its input at those call sites.
I think that we now handle this consistently everywhere. At the call sites in
LegalizeDAG, we used to assert in this case, so there's no functional change
for any existing code there. For the call sites in LegalizeVectorOps, this
really only affects whether or not we set Changed = true, but I think makes the
semantics clearer.
No test case here, but it will be covered by an upcoming PowerPC commit adding
QPX support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230332
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Toma Tabacu [Tue, 24 Feb 2015 11:52:19 +0000 (11:52 +0000)]
[mips] Reformat some TableGen definitions. NFC.
Summary: Separated some instruction and pseudo-instruction definitions from InstAlias definitions, added banner for pseudo-instructions and removed a redundant whitespace from a pseudo-instruction definition. No functional change.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D7552
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230327
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Kuba Brecka [Tue, 24 Feb 2015 09:47:05 +0000 (09:47 +0000)]
Fix alloca_instruments_all_paddings.cc test to work under higher -O levels (llvm part)
When AddressSanitizer only a single dynamic alloca and no static allocas, due to an early exit from FunctionStackPoisoner::poisonStack we forget to unpoison the dynamic alloca. This patch fixes that.
Reviewed at http://reviews.llvm.org/D7810
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230316
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Craig Topper [Tue, 24 Feb 2015 08:02:13 +0000 (08:02 +0000)]
[X86] Remove the AbsMem32 type from the assembly parser. Only really need the 16-bit version which will automatically get prioritized over AbsMem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230313
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Reed Kotler [Tue, 24 Feb 2015 02:36:45 +0000 (02:36 +0000)]
Beginning of alloca implementation for Mips fast-isel
Summary: Begin to add various address modes; including alloca.
Test Plan: Make sure there are no regressions in test-suite at O0/02 in mips32r1/r2
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: echristo, rfuhler, llvm-commits
Differential Revision: http://reviews.llvm.org/D6426
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230300
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Bob Wilson [Tue, 24 Feb 2015 01:37:31 +0000 (01:37 +0000)]
Fix handling of negative offsets for AddrModeT2_i8s4 in rewriteT2FrameIndex.
This is a follow up to r230233 to fix something that I noticed by
inspection. The AddrModeT2_i8s4 addressing mode does not support
negative offsets. I spent a good chunk of the day trying to come up with
a testcase for this but was not successful. This addressing mode is used
to spill and restore GPRPair registers in Thumb2 code and that does not
happen often. We also make very limited used of negative offsets when
lowering frame indexes. I am going ahead with the change anyway, because
I am pretty confident that it is correct. I also added a missing assertion
to check that the low bits of the scaled offset are zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230297
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Sanjoy Das [Tue, 24 Feb 2015 01:02:42 +0000 (01:02 +0000)]
Fix bug 22641
The bug was a result of getPreStartForExtend interpreting nsw/nuw
flags on an add recurrence more strongly than is legal. {S,+,X}<nsw>
implies S+X is nsw only if the backedge of the loop is taken at least
once.
NOTE: I had accidentally committed an unrelated change with the commit
message of this change in r230275 (r230275 was reverted in r230279).
This is the correct change for this commit message.
Differential Revision: http://reviews.llvm.org/D7808
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230291
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Manman Ren [Tue, 24 Feb 2015 00:45:56 +0000 (00:45 +0000)]
[LTO API] add lto_codegen_set_module to set the destination module.
When debugging LTO issues with ld64, we use -save-temps to save the merged
optimized bitcode file, then invoke ld64 again on the single bitcode file to
speed up debugging code generation passes and ld64 stuff after code generation.
llvm linking a single bitcode file via lto_codegen_add_module will generate a
different bitcode file from the single input. With the newly-added
lto_codegen_set_module, we can make sure the destination module is the same as
the input.
lto_codegen_set_module will transfer the ownship of the module to code
generator.
rdar://
19024554
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230290
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Adam Nemet [Tue, 24 Feb 2015 00:41:59 +0000 (00:41 +0000)]
[LoopAccesses] LAA::getInfo to use const reference for stride parameter
And other required const-correctness fixes to make this work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230289
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David Majnemer [Tue, 24 Feb 2015 00:11:32 +0000 (00:11 +0000)]
X86: Only use 'lea' in Win64 epilogues if a frame pointer exists
We can only use 'add' in epilogues, 'lea' is not permitted unless we've
established a frame pointer in the prologue.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230286
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Sanjoy Das [Tue, 24 Feb 2015 00:08:41 +0000 (00:08 +0000)]
New instcombine rule: max(~a,~b) -> ~min(a, b)
This case is interesting because ScalarEvolutionExpander lowers min(a,
b) as ~max(~a,~b). I think the profitability heuristics can be made
more clever/aggressive, but this is a start.
Differential Revision: http://reviews.llvm.org/D7821
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230285
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Sanjoy Das [Mon, 23 Feb 2015 23:22:58 +0000 (23:22 +0000)]
Bugfix: SCEVExpander incorrectly marks increment operations as no-wrap
When emitting the increment operation, SCEVExpander marks the
operation as nuw or nsw based on the flags on the preincrement SCEV.
This is incorrect because, for instance, it is possible that {-6,+,1}
is <nuw> while {-6,+,1}+1 = {-5,+,1} is not.
This change teaches SCEV to mark the increment as nuw/nsw only if it
can explicitly prove that the increment operation won't overflow.
Apart from the attached test case, another (more realistic) manifestation
of the bug can be seen in Transforms/IndVarSimplify/pr20680.ll.
NOTE: this change was landed with an incorrect commit message in
rL230275 and was reverted for that reason in rL230279. This commit
message is the correct one.
Differential Revision: http://reviews.llvm.org/D7778
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230280
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Sanjoy Das [Mon, 23 Feb 2015 23:13:22 +0000 (23:13 +0000)]
Revert 230275.
230275 got committed with an incorrect commit message due to a mixup
on my side. Will re-land in a few moments with the correct commit
message.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230279
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Simon Pilgrim [Mon, 23 Feb 2015 23:04:28 +0000 (23:04 +0000)]
Fix based on post-commit comment on D7816 & rL230177 - BUILD_VECTOR operand truncation was using the the BV's output scalar type instead of the input type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230278
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Andrea Di Biagio [Mon, 23 Feb 2015 22:59:02 +0000 (22:59 +0000)]
[X86] Teach how to custom lower double-to-half conversions under fast-math.
This patch teaches the backend how to expand a double-half conversion into
a double-float conversion immediately followed by a float-half conversion.
We do this only under fast-math, and if float-half conversions are legal
for the target.
Added test CodeGen/X86/fastmath-float-half-conversion.ll
Differential Revision: http://reviews.llvm.org/D7832
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230276
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Sanjoy Das [Mon, 23 Feb 2015 22:55:13 +0000 (22:55 +0000)]
Fix bug 22641
The bug was a result of getPreStartForExtend interpreting nsw/nuw
flags on an add recurrence more strongly than is legal. {S,+,X}<nsw>
implies S+X is nsw only if the backedge of the loop is taken at least
once.
Differential Revision: http://reviews.llvm.org/D7808
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230275
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Rafael Espindola [Mon, 23 Feb 2015 21:51:06 +0000 (21:51 +0000)]
Fix invalid cast.
Fixes PR22525.
Patch by Ben Longbons with testcase by me.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230271
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David Majnemer [Mon, 23 Feb 2015 21:50:30 +0000 (21:50 +0000)]
X86: Use a smaller 'mov' instruction for stack probe calls
Prologue emission, in some cases, requires calls to a stack probe helper
function. The amount of stack to probe is passed as a register
argument in the Win64 ABI but the instruction sequence used is
pessimistic: it assumes that the number of bytes to probe is greater
than 4 GB.
Instead, select a more appropriate opcode depending on the number of
bytes we are going to probe.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230270
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David Majnemer [Mon, 23 Feb 2015 21:50:27 +0000 (21:50 +0000)]
X86: Use 'mov' instead of 'lea' in Win64 SEH prologues when possible
'mov' and 'lea' are equivalent when the displacement applied with 'lea'
is zero. However, 'mov' should encode smaller.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230269
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David Majnemer [Mon, 23 Feb 2015 21:50:25 +0000 (21:50 +0000)]
X86: Explain why we cannot use a 'mov' in a Win64 epilogue
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230268
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David Majnemer [Mon, 23 Feb 2015 21:50:18 +0000 (21:50 +0000)]
X86: Consistently use 'epilogue' instead of 'epilog'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230267
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Sanjay Patel [Mon, 23 Feb 2015 21:32:09 +0000 (21:32 +0000)]
add newline for easier reading; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230265
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 21:26:18 +0000 (21:26 +0000)]
[AsmPrinter] Access pointers to globals via pcrel GOT entries
Front-ends could use global unnamed_addr to hold pointers to other
symbols, like @gotequivalent below:
@foo = global i32 42
@gotequivalent = private unnamed_addr constant i32* @foo
@delta = global i32 trunc (i64 sub (i64 ptrtoint (i32** @gotequivalent to i64),
i64 ptrtoint (i32* @delta to i64))
to i32)
The global @delta holds a data "PC"-relative offset to @gotequivalent,
an unnamed pointer to @foo. The darwin/x86-64 assembly output for this follows:
.globl _foo
_foo:
.long 42
.globl _gotequivalent
_gotequivalent:
.quad _foo
.globl _delta
_delta:
.long _gotequivalent-_delta
Since unnamed_addr indicates that the address is not significant, only
the content, we can optimize the case above by replacing pc-relative
accesses to "GOT equivalent" globals, by a PC relative access to the GOT
entry of the final symbol instead. Therefore, "delta" can contain a pc
relative relocation to foo's GOT entry and we avoid the emission of
"gotequivalent", yielding the assembly code below:
.globl _foo
_foo:
.long 42
.globl _delta
_delta:
.long _foo@GOTPCREL+4
There are a couple of advantages of doing this: (1) Front-ends that need
to emit a great deal of data to store pointers to external symbols could
save space by not emitting such "got equivalent" globals and (2) IR
constructs combined with this opt opens a way to represent GOT pcrel
relocations by using the LLVM IR, which is something we previously had
no way to express.
Differential Revision: http://reviews.llvm.org/D6922
rdar://problem/
18534217
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230264
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Justin Bogner [Mon, 23 Feb 2015 21:21:34 +0000 (21:21 +0000)]
InstrProf: Teach llvm-cov to show the max count instead of the last
When multiple regions start on the same line, llvm-cov was just
showing the count of the last one as the line count. This can be
confusing and misleading for things like one-liner loops, where the
count at the end isn't very interesting, or even "if" statements with
an opening brace at the end of the line.
Instead, use the maximum of all of the region start counts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230263
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Andrew Kaylor [Mon, 23 Feb 2015 21:03:30 +0000 (21:03 +0000)]
Removing unused private field.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230259
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 20:57:46 +0000 (20:57 +0000)]
[X86][MMX] Fix test to reflect current codegen
This test failed in several buildbots, a bit unclear how that happen
since this was the previous behavior before r230248.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230258
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Andrew Kaylor [Mon, 23 Feb 2015 20:44:34 +0000 (20:44 +0000)]
Second attempt to fix WinEHCatchDirector build failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230257
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Andrew Kaylor [Mon, 23 Feb 2015 20:19:15 +0000 (20:19 +0000)]
Attempting to fix WinEHCatchDirector destructor related build failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230252
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Andrew Kaylor [Mon, 23 Feb 2015 20:04:51 +0000 (20:04 +0000)]
Adding test for Windows EH frame variable remapping.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230250
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Andrew Kaylor [Mon, 23 Feb 2015 20:01:56 +0000 (20:01 +0000)]
Remap frame variables for native Windows exception handling.
Differential Revision: http://reviews.llvm.org/D7770
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230249
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 19:53:37 +0000 (19:53 +0000)]
Revert "[X86][MMX] Add MMX instructions to foldable tables"
This reverts commit r230226 since it breaks win buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230248
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Chad Rosier [Mon, 23 Feb 2015 19:34:04 +0000 (19:34 +0000)]
Revert "Revert "Raising minimum required CMake version to 2.8.12.2.""
This reverts commit r230240, which was an accidental commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230246
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Eric Christopher [Mon, 23 Feb 2015 19:28:45 +0000 (19:28 +0000)]
Rewrite the global merge pass to be subprogram agnostic for now.
It was previously using the subtarget to get values for the global
offset without actually checking each function as it was generating
code. Go ahead and solidify the current behavior and make the
existing FIXMEs more prominent.
As a note the ARM backend previously had a thumb1 and non-thumb1
set of defaults. Only the former was tested so I've changed the
behavior to only use that for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230245
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Chad Rosier [Mon, 23 Feb 2015 19:15:16 +0000 (19:15 +0000)]
Prevent hoisting fmul from THEN/ELSE to IF if there is fmsub/fmadd opportunity.
This patch adds the isProfitableToHoist API. For AArch64, we want to prevent a
fmul from being hoisted in cases where it is more profitable to form a
fmsub/fmadd.
Phabricator Review: http://reviews.llvm.org/D7299
Patch by Lawrence Hu <lawrence@codeaurora.org>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230241
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Chad Rosier [Mon, 23 Feb 2015 19:15:08 +0000 (19:15 +0000)]
Revert "Raising minimum required CMake version to 2.8.12.2."
This reverts commit
247aed4710e8befde76da42b27313661dea7cf66.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230240
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Reid Kleckner [Mon, 23 Feb 2015 19:07:25 +0000 (19:07 +0000)]
cmake: Don't do the libstdc++ version check when clang simulates MSVC
If we're using clang-cl, that's a pretty good indication that we're
going to use MSVC's STL.
This simplifies the clang-cl ninja self-host configuration down to:
CC=clang-cl CXX=clang-cl cmake .. -GNinja
Modified version of zturner's patch:
Differential Revision: http://reviews.llvm.org/D7824
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230239
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Mehdi Amini [Mon, 23 Feb 2015 18:30:25 +0000 (18:30 +0000)]
InstSimplify: simplify 0 / X if nnan and nsz
From: Fiona Glaser <fglaser@apple.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230238
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Daniel Sanders [Mon, 23 Feb 2015 17:22:16 +0000 (17:22 +0000)]
[mips] Honour -mno-odd-spreg for vector insert/extract when MSA is enabled.
Summary:
-mno-odd-spreg prohibits the use of odd-numbered single-precision floating
point registers. However, vector insert/extract was still using them when
manipulating the subregisters of an MSA register. Fixed this by ensuring
that insertion/extraction is only performed on even-numbered vector
registers when -mno-odd-spreg is given.
Reviewers: vmedic, sstankovic
Reviewed By: sstankovic
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D7672
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230235
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Bob Wilson [Mon, 23 Feb 2015 16:57:19 +0000 (16:57 +0000)]
Fix incorrect immediate size for AddrModeT2_i8s4 in rewriteT2FrameIndex.
The natural way to handle this addressing mode would be to say that it has
8 bits and gets scaled by 4, but since the MC layer is expecting the scaling
to be already reflected in the immediate value, we have been setting the
Scale to 1. That's fine, but then NumBits needs to be adjusted to reflect
the effective increase in the range of the immediate. That adjustment was
missing.
The consequence is that the register scavenger can fail.
The estimateRSStackSizeLimit() function in ARMFrameLowering.cpp correctly
assumes that the AddrModeT2_i8s4 address mode can handle scaled offsets up to
1020. Under just the right circumstances, we fail to reserve space for the
scavenger because it thinks that nothing will be needed. However, the overly
pessimistic behavior in rewriteT2FrameIndex causes some frame indexes to be
out of range and require scavenged registers, and so the scavenger asserts.
Unfortunately I have not been able to come up with a testcase for this. I
can only reproduce it on an internal branch where the frame layout and
register allocation is slightly different than trunk. We really need a
way to serialize MachineInstr-level IR to write reasonable tests for things
like this.
rdar://problem/
19909005
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230233
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Benjamin Kramer [Mon, 23 Feb 2015 16:41:36 +0000 (16:41 +0000)]
Sync the __builtin_expects for our 3 quadratically probed hash table implementations.
This assumes that
a) finding the bucket containing the value is LIKELY
b) finding an empty bucket is LIKELY
c) growing the table is UNLIKELY
I also switched the a) and b) cases for SmallPtrSet as we seem to use
the set mostly more for insertion than for checking existence.
In a simple benchmark consisting of 2^21 insertions of 2^20 unique
pointers into a DenseMap or SmallPtrSet a few percent speedup on average,
but nothing statistically significant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230232
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 15:33:40 +0000 (15:33 +0000)]
[X86] Add specific mtriple in order to appease builbots
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230229
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 15:23:22 +0000 (15:23 +0000)]
[X86][MMX] Add MMX instructions to foldable tables
Teach the peephole optimizer to work with MMX instructions by adding
entries into the foldable tables. This covers folding opportunities not
handled during isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230226
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 15:23:14 +0000 (15:23 +0000)]
[X86][MMX] Support folding loads in psll, psrl and psra intrinsics
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230225
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Bruno Cardoso Lopes [Mon, 23 Feb 2015 15:23:06 +0000 (15:23 +0000)]
[X86][MMX] Add tests for pslli, psrli and psrai intrinsics
Add tests to cover the RR form of the pslli, psrli and psrai intrinsics.
In the next commit, the loads are going to be folded and the
instructions use the RM form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230224
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Elena Demikhovsky [Mon, 23 Feb 2015 15:12:31 +0000 (15:12 +0000)]
AVX-512: recommitted 229837 + bugfix + test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230223
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Elena Demikhovsky [Mon, 23 Feb 2015 14:14:02 +0000 (14:14 +0000)]
restructured X86 scalar unary operation templates
I made the templates general, no need to define pattern separately for each instruction/intrinsic.
Now only need to add r_Int pattern for AVX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230221
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Benjamin Kramer [Mon, 23 Feb 2015 11:33:54 +0000 (11:33 +0000)]
[llvm-pdbdump] Remove unused variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230216
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NAKAMURA Takumi [Mon, 23 Feb 2015 11:12:52 +0000 (11:12 +0000)]
Orc/JITSymbol.h requires not "Compiler.h" but "DataTypes.h" due to uint64_t.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230214
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David Majnemer [Mon, 23 Feb 2015 07:13:52 +0000 (07:13 +0000)]
AsmParser: Check ConstantExpr insertvalue operands for type correctness
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230206
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