Chandler Carruth [Thu, 25 Sep 2014 10:21:15 +0000 (10:21 +0000)]
[x86] Teach the new vector shuffle lowering a fancier way to lower
256-bit vectors with lane-crossing.
Rather than immediately decomposing to 128-bit vectors, try flipping the
256-bit vector lanes, shuffling them and blending them together. This
reduces our worst case shuffle by a pretty significant margin across the
board.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218446
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Oliver Stannard [Thu, 25 Sep 2014 10:02:05 +0000 (10:02 +0000)]
[Thumb2] BXJ should be undefined for v7M, v8A
The Thumb2 BXJ instruction (Branch and Exchange Jazelle) is not
defined for v7M or v8A. It is defined for all other Thumb2-supporting
architectures (v6T2, v7A and v7R).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218445
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Chandler Carruth [Thu, 25 Sep 2014 04:10:27 +0000 (04:10 +0000)]
[x86] Fix an oversight in the v8i32 path of the new vector shuffle
lowering where it only used the mask of the low 128-bit lane rather than
the entire mask.
This allows the new lowering to correctly match the unpack patterns for
v8i32 vectors.
For reference, the reason that we check for the the entire mask rather
than checking the repeated mask is because the repeated masks don't
abide by all of the invariants of normal masks. As a consequence, it is
safer to use the full mask with functions like the generic equivalence
test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218442
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Chandler Carruth [Thu, 25 Sep 2014 04:03:22 +0000 (04:03 +0000)]
[x86] Rearrange the code for v16i16 lowering a bit for clarity and to
reduce the amount of checking we do here.
The first realization is that only non-crossing cases between 128-bit
lanes are handled by almost the entire function. It makes more sense to
handle the crossing cases first.
THe second is that until we actually are going to generate fancy shared
lowering strategies that use the repeated semantics of the v8i16
lowering, we should waste time checking for repeated masks. It is
simplest to directly test for the entire unpck masks anyways, so we
gained nothing from this.
This also matches the structure of v32i8 more closely.
No functionality changed here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218441
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Chandler Carruth [Thu, 25 Sep 2014 02:52:12 +0000 (02:52 +0000)]
[x86] Implement AVX2 support for v32i8 in the new vector shuffle
lowering.
This completes the basic AVX2 feature support, but there are still some
improvements I'd like to do to really get the last mile of performance
here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218440
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Chandler Carruth [Thu, 25 Sep 2014 02:44:39 +0000 (02:44 +0000)]
[x86] More tweaks to the v32i8 test cases.
I made a mistake in the previous commit and produced the wrong pattern.
Fix that. Also make one more shuffle pattern byte-based rather than
word-based, and add two more blend patterns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218439
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Chandler Carruth [Thu, 25 Sep 2014 02:20:02 +0000 (02:20 +0000)]
[x86] Re-work a bunch of the v32i8 test cases to actually involve byte
shuffles rather than word shuffles.
As you might guess, these were built starting from the word shuffle test
cases and I failed to properly port a bunch of them and left them as
widened word shuffle test cases. We still have a couple of tests that
check our ability to widen shuffles, but now we will test the actual
byte shuffle quite a bit better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218438
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Reid Kleckner [Thu, 25 Sep 2014 02:09:18 +0000 (02:09 +0000)]
MC: Use @IMGREL instead of @IMGREL32, which we can't parse
Nico Rieck added support for this 32-bit COFF relocation some time ago
for Win64 stuff. It appears that as an oversight, the assembly output
used "foo"@IMGREL32 instead of "foo"@IMGREL, which is what we can parse.
Sadly, there were actually tests that took in IMGREL and put out
IMGREL32, and we didn't notice the inconsistency. Oh well. Now LLVM can
assemble it's own output with slightly more fidelity.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218437
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Chandler Carruth [Thu, 25 Sep 2014 01:16:01 +0000 (01:16 +0000)]
[x86] Remove the defunct X86ISD::BLENDV entry -- we use vector selects
for this now.
Should prevent folks from running afoul of this and not knowing why
their code won't instruction select the way I just did...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218436
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Chandler Carruth [Thu, 25 Sep 2014 01:13:38 +0000 (01:13 +0000)]
[x86] Fix the v16i16 blend logic I added in the prior commit and add the
missing test cases for it.
Unsurprisingly, without test cases, there were bugs here. Surprisingly,
this bug wasn't caught at compile time. Yep, there is an X86ISD::BLENDV.
It isn't wired to anything. Oops. I'll fix than next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218434
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Justin Bogner [Thu, 25 Sep 2014 00:34:18 +0000 (00:34 +0000)]
llvm-cov: Combine segments that cover the same location
If we have multiple coverage counts for the same segment, we need to
add them up rather than arbitrarily choosing one. This fixes that and
adds a test with template instantiations to exercise it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218432
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Akira Hatanaka [Thu, 25 Sep 2014 00:26:15 +0000 (00:26 +0000)]
[X86,AVX] Add an isel pattern for X86VBroadcast.
This fixes PR21050 and rdar://problem/
18434607.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218431
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Chandler Carruth [Thu, 25 Sep 2014 00:24:19 +0000 (00:24 +0000)]
[x86] Implement v16i16 support with AVX2 in the new vector shuffle
lowering.
This also implements the fancy blend lowering for v16i16 using AVX2 and
teaches the X86 backend to print shuffle masks for 256-bit PSHUFB
and PBLENDW instructions. It also makes the mask decoding correct for
PBLENDW instructions. The yaks, they are legion.
Tests are updated accordingly. There are some missing tests for the
VBLENDVB lowering, but I'll add those in a follow-up as this commit has
accumulated enough cruft already.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218430
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Kevin Enderby [Wed, 24 Sep 2014 23:08:22 +0000 (23:08 +0000)]
Flush out enough of llvm-objdump’s SymbolizerSymbolLookUp() for Mach-O files to
get the literal string “Hello world” printed as a comment on the instruction
that loads the pointer to it. For now this is just for x86_64. So for object
files with relocation entries it produces things like:
leaq L_.str(%rip), %rax ## literal pool for: "Hello world\n"
and similar for fully linked images like executables:
leaq 0x4f(%rip), %rax ## literal pool for: "Hello world\n"
Also to allow testing against darwin’s otool(1), I hooked up the existing
-no-show-raw-insn option to the Mach-O parser code, added the new Mach-O
only -full-leading-addr option to match otool(1)'s printing of addresses and
also added the new -print-imm-hex option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218423
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Kostya Serebryany [Wed, 24 Sep 2014 22:41:55 +0000 (22:41 +0000)]
[asan] don't instrument module CTORs that may be run before asan.module_ctor. This fixes asan running together -coverage
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218421
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Renato Golin [Wed, 24 Sep 2014 21:58:04 +0000 (21:58 +0000)]
Removing empty ARM tests from failed revert
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218419
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Renato Golin [Wed, 24 Sep 2014 21:45:26 +0000 (21:45 +0000)]
Removing empty tests from failed revert
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218417
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Renato Golin [Wed, 24 Sep 2014 21:30:43 +0000 (21:30 +0000)]
Revert 218406 - Refactor the RelocVisitor::visit method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218416
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Renato Golin [Wed, 24 Sep 2014 21:30:14 +0000 (21:30 +0000)]
Revert 218407 - Add support for ARM and AArch64 BE object files
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218415
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Renato Golin [Wed, 24 Sep 2014 21:29:45 +0000 (21:29 +0000)]
Revert 218408 - Report endianness in output of {dwarf, obj}dump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218414
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Renato Golin [Wed, 24 Sep 2014 21:28:53 +0000 (21:28 +0000)]
Revert 218411 - XFAIL reloc test on x86/hexagon
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218413
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Renato Golin [Wed, 24 Sep 2014 21:00:30 +0000 (21:00 +0000)]
XFAIL reloc test on x86/hexagon
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218411
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Akira Hatanaka [Wed, 24 Sep 2014 20:37:14 +0000 (20:37 +0000)]
Revert r218380. This was breaking Apple internal build bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218409
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Renato Golin [Wed, 24 Sep 2014 20:07:41 +0000 (20:07 +0000)]
Report endianness in output of {dwarf, obj}dump
For biendian targets like ARM and AArch64, it is useful to have the
output of the llvm-dwarfdump and llvm-objdump report the endianness
used when the object files were generated.
Patch by Charlie Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218408
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Renato Golin [Wed, 24 Sep 2014 20:07:30 +0000 (20:07 +0000)]
Add support for ARM and AArch64 BE object files
This change fixes the ARM and AArch64 relocation visitors in
RelocVisitor. They were unconditionally assuming the object data are
little-endian. Tests have been added to ensure that the
llvm-dwarfdump utility does not crash when processing big-endian
object files.
Patch by Charlie Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218407
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Renato Golin [Wed, 24 Sep 2014 20:07:22 +0000 (20:07 +0000)]
Refactor the RelocVisitor::visit method
This change replaces the brittle if/else chain of string comparisons
with a switch statement on the detected target triple, removing the
need for testing arbitrary architecture names returned from
getFileFormatName, whose primary purpose seems to be for display
(user-interface) purposes. The visitor now takes a reference to the
object file, rather than its arbitrary file format name to figure out
whether the file is a 32 or 64-bit object file and what the detected
target triple is.
A set of tests have been added to help show that the refactoring processes
relocations for the same targets as the original code.
Patch by Charlie Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218406
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Scott Douglass [Wed, 24 Sep 2014 18:37:48 +0000 (18:37 +0000)]
pass environment when invoking llvm-config from lit.cfg
Use the same environment when invoking llvm-config from lit.cfg as
will be used when running tests, so that ASAN_OPTIONS, INCLUDE, etc.
are present.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218403
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Chris Bieneman [Wed, 24 Sep 2014 18:35:58 +0000 (18:35 +0000)]
Adding #ifdef around TermColorMutex based on feedback from Craig Topper.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218401
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Chandler Carruth [Wed, 24 Sep 2014 18:20:09 +0000 (18:20 +0000)]
[x86] Factor out the logic to generically decombose a vector shuffle
into unblended shuffles and a blend.
This is the consistent fallback for the lowering paths that have fast
blend operations available, and its getting quite repetitive.
No functionality changed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218399
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Kaelyn Takata [Wed, 24 Sep 2014 18:00:20 +0000 (18:00 +0000)]
Revert "Add support for ARM and AArch64 BE object files"
This reverts commit r218389 as it depends on r218388.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218398
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Kaelyn Takata [Wed, 24 Sep 2014 18:00:17 +0000 (18:00 +0000)]
Revert "Report endianness in output of {dwarf, obj}dump"
This reverts commit r218391 as it depends on r218388 and r218389
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218397
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Kaelyn Takata [Wed, 24 Sep 2014 17:49:07 +0000 (17:49 +0000)]
Revert "Refactor the RelocVisitor::visit method"
This reverts commit
faac033f7364bb4226e22c8079c221c96af10d02.
The test depends on all targets to be enabled in llc in order to pass,
and needs to be rewritten/refactored to not have that dependency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218393
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Renato Golin [Wed, 24 Sep 2014 17:01:33 +0000 (17:01 +0000)]
Report endianness in output of {dwarf, obj}dump
For biendian targets like ARM and AArch64, it is useful to have the
output of the llvm-dwarfdump and llvm-objdump report the endianness
used when the object files were generated.
Patch by Charlie Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218391
91177308-0d34-0410-b5e6-
96231b3b80d8
Renato Golin [Wed, 24 Sep 2014 17:01:06 +0000 (17:01 +0000)]
Add support for ARM and AArch64 BE object files
This change fixes the ARM and AArch64 relocation visitors in
RelocVisitor. They were unconditionally assuming the object data are
little-endian. Tests have been added to ensure that the
llvm-dwarfdump utility does not crash when processing big-endian
object files.
Patch by Charlie Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218389
91177308-0d34-0410-b5e6-
96231b3b80d8
Renato Golin [Wed, 24 Sep 2014 17:00:42 +0000 (17:00 +0000)]
Refactor the RelocVisitor::visit method
This change replaces the brittle if/else chain of string comparisons
with a switch statement on the detected target triple, removing the
need for testing arbitrary architecture names returned from
getFileFormatName, whose primary purpose seems to be for display
(user-interface) purposes. The visitor now takes a reference to the
object file, rather than its arbitrary file format name to figure out
whether the file is a 32 or 64-bit object file and what the detected
target triple is.
A set of tests have been added to help show that the refactoring processes
relocations for the same targets as the original code.
Patch by Charlie Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218388
91177308-0d34-0410-b5e6-
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David Peixotto [Wed, 24 Sep 2014 16:48:31 +0000 (16:48 +0000)]
Fix assertion in LICM doFinalization()
The doFinalization method checks that the LoopToAliasSetMap is
empty. LICM populates that map as it runs through the loop nest,
deleting the entries for child loops as it goes. However, if a child
loop is deleted by another pass (e.g. unrolling) then the loop will
never be deleted from the map because LICM walks the loop nest to
find entries it can delete.
The fix is to delete the loop from the map and free the alias set
when the loop is deleted from the loop nest.
Differential Revision: http://reviews.llvm.org/D5305
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218387
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Moritz Roth [Wed, 24 Sep 2014 16:35:50 +0000 (16:35 +0000)]
[Thumb] Make load/store optimizer less conservative.
If it's safe to clobber the condition flags, we can do a few extra things:
it's then possible to reset the base register writeback using a SUBS, so
we can try to merge even if the base register isn't dead after the merged
instruction.
This is effectively a (heavily bug-fixed) rewrite of r208992.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218386
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Oliver Stannard [Wed, 24 Sep 2014 14:20:01 +0000 (14:20 +0000)]
[Thumb] 32-bit encodings of 'cps' are not valid for v7M
v7M only allows the 16-bit encoding of the 'cps' (Change Processor
State) instruction, and does not have the 32-bit encoding which is
valid from v6T2 onwards.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218382
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Aaron Ballman [Wed, 24 Sep 2014 13:54:56 +0000 (13:54 +0000)]
Silencing an "enumeral and non-enumeral type in conditional expression" warning. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218381
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Benjamin Kramer [Wed, 24 Sep 2014 13:19:28 +0000 (13:19 +0000)]
Replace a hand-written suffix compare with std::lexicographical_compare.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218380
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Chandler Carruth [Wed, 24 Sep 2014 09:39:41 +0000 (09:39 +0000)]
[x86] Teach the instruction lowering to add comments describing constant
pool data being loaded into a vector register.
The comments take the form of:
# ymm0 = [a,b,c,d,...]
# xmm1 = <x,y,z...>
The []s are used for generic sequential data and the <>s are used for
specifically ConstantVector loads. Undef elements are printed as the
letter 'u', integers in decimal, and floating point values as floating
point values. Suggestions on improving the formatting or other aspects
of the display are very welcome.
My primary use case for this is to be able to FileCheck test masks
passed to vector shuffle instructions in-register. It isn't fantastic
for that (no decoding special zeroing semantics or other tricks), but it
at least puts the mask onto an instruction line that could reasonably be
checked. I've updated many of the new vector shuffle lowering tests to
leverage this in their test cases so that we're actually checking the
shuffle masks remain as expected.
Before implementing this, I tried a *bunch* of different approaches.
I looked into teaching the MCInstLower code to scan up the basic block
and find a definition of a register used in a shuffle instruction and
then decode that, but this seems incredibly brittle and complex.
I talked to Hal a lot about the "right" way to do this: attach the raw
shuffle mask to the instruction itself in some form of unencoded
operands, and then use that to emit the comments. I still think that's
the optimal solution here, but it proved to be beyond what I'm up for
here. In particular, it seems likely best done by completing the
plumbing of metadata through these layers and attaching the shuffle mask
in metadata which could have fully automatic dropping when encoding an
actual instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218377
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Michael Liao [Wed, 24 Sep 2014 04:59:06 +0000 (04:59 +0000)]
Allow BB duplication threshold to be adjusted through JumpThreading's ctor
- BB duplication may not be desired on targets where there is no or small
branch penalty and code duplication needs restrict control.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218375
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NAKAMURA Takumi [Wed, 24 Sep 2014 04:45:14 +0000 (04:45 +0000)]
Windows/Host.inc: Reformat the header to fit 80-col.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218374
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NAKAMURA Takumi [Wed, 24 Sep 2014 04:45:02 +0000 (04:45 +0000)]
Unix/Host.inc: Remove <cstdlib>. It has been unused for a long time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218373
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NAKAMURA Takumi [Wed, 24 Sep 2014 04:44:50 +0000 (04:44 +0000)]
Unix/Host.inc: Wrap a comment line in 80-col.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218371
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NAKAMURA Takumi [Wed, 24 Sep 2014 04:44:37 +0000 (04:44 +0000)]
Unix/Host.inc: Remove leading whitespace. It had been here since r56942!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218370
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NAKAMURA Takumi [Wed, 24 Sep 2014 04:38:20 +0000 (04:38 +0000)]
valgrind/x86_64-pc-linux-gnu.supp: Suppress also /bin/bash.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218369
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NAKAMURA Takumi [Wed, 24 Sep 2014 04:38:09 +0000 (04:38 +0000)]
valgrind/x86_64-pc-linux-gnu.supp: Tweak /bin/sed to let calloc recognized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218368
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Jiangning Liu [Wed, 24 Sep 2014 03:22:56 +0000 (03:22 +0000)]
Clear PreferredExtendType for in each function-specific state FunctionLoweringInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218364
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Chandler Carruth [Wed, 24 Sep 2014 03:06:37 +0000 (03:06 +0000)]
[x86] More refactoring of the shuffle comment emission. The previous
attempt didn't work out so well. It looks like it will be much better
for introducing extra logic to find a shuffle mask if the finding logic
is totally separate. This also makes it easy to sink the opcode logic
completely out of the routine so we don't re-dispatch across it.
Still no functionality changed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218363
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Chandler Carruth [Wed, 24 Sep 2014 03:06:34 +0000 (03:06 +0000)]
[x86] Bypass the shuffle mask comment generation when not using verbose
asm. This can be somewhat expensive and there is no reason to do it
outside of tests or debugging sessions. I'm also likely to make it
significantly more expensive to support more styles of shuffles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218362
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Chandler Carruth [Wed, 24 Sep 2014 02:24:41 +0000 (02:24 +0000)]
[x86] Hoist the logic for extracting the relevant bits of information
from the MachineInstr into the caller which is already doing a switch
over the instruction.
This will make it more clear how to compute different operands to feed
the comment selection for example.
Also, in a drive-by-fix, don't append an empty comment string (which is
a no-op ultimately).
No functionality changed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218361
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Matt Arsenault [Wed, 24 Sep 2014 02:17:12 +0000 (02:17 +0000)]
R600/SI: Add new helper isSGPRClassID
Move these into header since they are trivial
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218360
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Matt Arsenault [Wed, 24 Sep 2014 02:17:09 +0000 (02:17 +0000)]
R600/SI: Fix hardcoded and wrong operand numbers.
Also fix leftover debug printing
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218359
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Matt Arsenault [Wed, 24 Sep 2014 02:17:06 +0000 (02:17 +0000)]
R600/SI: Enable named operand table for SALU instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218358
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Chandler Carruth [Wed, 24 Sep 2014 02:16:12 +0000 (02:16 +0000)]
[x86] Start refactoring the comment printing logic in the MC lowering of
vector shuffles.
This is just the beginning by hoisting it into its own function and
making use of early exit to dramatically simplify the flow of the
function. I'm going to be incrementally refactoring this until it is
a bit less magical how this applies to other instructions, and I can
teach it how to dig a shuffle mask out of a register. Then I plan to
hook it up to VPERMD so we get our mask comments for it.
No functionality changed yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218357
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Matt Arsenault [Wed, 24 Sep 2014 02:14:26 +0000 (02:14 +0000)]
R600/SI: Fix weird CHECK-DAG usage
This prevents these from failing in a future commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218356
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Tom Stellard [Wed, 24 Sep 2014 01:33:28 +0000 (01:33 +0000)]
R600/SI: Enable selecting SALU inside branches
We can do this now that the FixSGPRLiveRanges pass is working.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218353
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Tom Stellard [Wed, 24 Sep 2014 01:33:26 +0000 (01:33 +0000)]
R600/SI: Move PHIs that define SGPRs to the VALU in most cases
This fixes a bug that is uncovered by a future commit and will
be tested by the test/CodeGen/R600/sgpr-control-flow.ll test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218352
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Tom Stellard [Wed, 24 Sep 2014 01:33:24 +0000 (01:33 +0000)]
R600/SI: Fix the FixSGPRLiveRanges pass
The previous implementation was extending the live range of SGPRs
by modifying the live intervals directly. This was causing a lot
of machine verification errors when the machine scheduler was enabled.
The new implementation adds pseudo instructions with implicit uses to
extend the live ranges of SGPRs, which works much better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218351
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Tom Stellard [Wed, 24 Sep 2014 01:33:23 +0000 (01:33 +0000)]
R600/SI: Mark EXEC_LO and EXEC_HI as reserved
These registers can be allocated and used like other 32-bit registers,
but it seems like a likely source for bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218350
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Tom Stellard [Wed, 24 Sep 2014 01:33:22 +0000 (01:33 +0000)]
R600/SI: Fix SIRegisterInfo::getPhysRegSubReg()
Correctly handle special registers: EXEC, EXEC_LO, EXEC_HI, VCC_LO,
VCC_HI, and M0. The previous implementation would assertion fail
when passed these registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218349
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Tom Stellard [Wed, 24 Sep 2014 01:33:17 +0000 (01:33 +0000)]
R600/SI: Implement VGPR register spilling for compute at -O0 v3
VGPRs are spilled to LDS. This still needs more testing, but
we need to at least enable it at -O0, because the fast register
allocator spills all registers that are live at the end of blocks
and without this some future commits will break the
flat-address-space.ll test.
v2: Only calculate thread id once
v3: Move insertion of spill instructions to
SIRegisterInfo::eliminateFrameIndex()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218348
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Chandler Carruth [Wed, 24 Sep 2014 01:24:44 +0000 (01:24 +0000)]
[x86] Teach the new vector shuffle lowering to lower v8i32 shuffles with
the native AVX2 instructions.
Note that the test case is really frustrating here because VPERMD
requires the mask to be in the register input and we don't produce
a comment looking through that to the constant pool. I'm going to
attempt to improve this in a subsequent commit, but not sure if I will
succeed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218347
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Chandler Carruth [Wed, 24 Sep 2014 01:03:57 +0000 (01:03 +0000)]
[x86] Fix a really terrible bug in the repeated 128-bin-lane shuffle
detection. It was incorrectly handling undef lanes by actually treating
an undef lane in the first 128-bit lane as a *numeric* shuffle value.
Fortunately, this almost always DTRT and disabled detecting repeated
patterns. But not always. =/ This patch introduces a much more
principled approach and fixes the miscompiles I spotted by inspection
previously.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218346
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Robin Morisset [Tue, 23 Sep 2014 23:18:01 +0000 (23:18 +0000)]
Fix swift-atomics testcase
This testcase was not testing what it meant: because there were only two checks for
dmb {{ish}} in the second function, it could have missed a bug where one of the three
required dmb {{ish}} became dmb {{ishst}}. As I was fixing it, I also added
CHECK-LABELs to make it a bit less brittle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218341
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Chandler Carruth [Tue, 23 Sep 2014 22:39:02 +0000 (22:39 +0000)]
[x86] Teach the new vector shuffle lowering to lower v4i64 vector
shuffles using the AVX2 instructions. This is the first step of cutting
in real AVX2 support.
Note that I have spotted at least one bug in the test cases already, but
I suspect it was already present and just is getting surfaced. Will
investigate next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218338
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Reid Kleckner [Tue, 23 Sep 2014 22:33:01 +0000 (22:33 +0000)]
GlobalOpt: Preserve comdats of unoptimized initializers
Rather than slurping in and splatting out the whole ctor list, preserve
the existing array entries without trying to understand them. Only
remove the entries that we know we can optimize away. This way we don't
need to wire through priority and comdats or anything else we might add.
Fixes a linker issue where the .init_array or .ctors entry would point
to discarded initialization code if the comdat group from the TU with
the faulty global_ctors entry was dropped.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218337
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Jim Grosbach [Tue, 23 Sep 2014 22:16:02 +0000 (22:16 +0000)]
AArch64: allow constant expressions for shifted reg literals
e.g., add w1, w2, w3, lsl #(2 - 1)
This sort of thing comes up in pre-processed assembly playing macro games.
Still validate that it's an assembly time constant. The early exit error check
was just a bit overzealous and disallowed a left paren.
rdar://
18430542
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218336
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Chandler Carruth [Tue, 23 Sep 2014 22:14:14 +0000 (22:14 +0000)]
[x86] Teach the rest of the 'target shuffle' machinery about blends and
add VPBLENDD to the InstPrinter's comment generation so we get nice
comments everywhere.
Now that we have the nice comments, I can see the bug introduced by
a silly typo in the commit that enabled VPBLENDD, and have fixed it. Yay
tests that are easy to inspect.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218335
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Tom Stellard [Tue, 23 Sep 2014 21:26:25 +0000 (21:26 +0000)]
R600/SI: Clean up checks for legality of immediate operands
There are new register classes VCSrc_* which represent operands that
can take an SGPR, VGPR or inline constant. The VSrc_* class is now used
to represent operands that can take an SGPR, VGPR, or a 32-bit
immediate.
This allows us to have more accurate checks for legality of
immediates, since before we had no way to distinguish between operands
that supported any 32-bit immediate and operands which could only
support inline constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218334
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Robin Morisset [Tue, 23 Sep 2014 20:59:25 +0000 (20:59 +0000)]
[X86] Make wide loads be managed by AtomicExpand
Summary:
AtomicExpand already had logic for expanding wide loads and stores on LL/SC
architectures, and for expanding wide stores on CmpXchg architectures, but
not for wide loads on CmpXchg architectures. This patch fills this hole,
and makes use of this new feature in the X86 backend.
Only one functionnal change: we now lose the SynchScope attribute.
It is regrettable, but I have another patch that I will submit soon that will
solve this for all of AtomicExpand (it seemed better to split it apart as it
is a different concern).
Test Plan: make check-all (lots of tests for this functionality already exist)
Reviewers: jfb
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5404
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218332
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Robin Morisset [Tue, 23 Sep 2014 20:46:49 +0000 (20:46 +0000)]
[Power] Use AtomicExpandPass for fence insertion, and use lwsync where appropriate
Summary:
This patch makes use of AtomicExpandPass in Power for inserting fences around
atomic as part of an effort to remove fence insertion from SelectionDAGBuilder.
As a big bonus, it lets us use sync 1 (lightweight sync, often used by the mnemonic
lwsync) instead of sync 0 (heavyweight sync) in many cases.
I also added a test, as there was no test for the barriers emitted by the Power
backend for atomic loads and stores.
Test Plan: new test + make check-all
Reviewers: jfb
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5180
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218331
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Robin Morisset [Tue, 23 Sep 2014 20:31:14 +0000 (20:31 +0000)]
Add AtomicExpandPass::bracketInstWithFences, and use it whenever getInsertFencesForAtomic would trigger in SelectionDAGBuilder
Summary:
The goal is to eventually remove all the code related to getInsertFencesForAtomic
in SelectionDAGBuilder as it is wrong (designed for ARM, not really portable, works
mostly by accident because the backends are overly conservative), and repeats the
same logic that goes in emitLeading/TrailingFence.
In this patch, I make AtomicExpandPass insert the fences as it knows better
where to put them. Because this requires getting the fences and not just
passing an IRBuilder around, I had to change the return type of
emitLeading/TrailingFence.
This code only triggers on ARM for now. Because it is earlier in the pipeline
than SelectionDAGBuilder, it triggers and lowers atomic accesses to atomic so
SelectionDAGBuilder does not add barriers anymore on ARM.
If this patch is accepted I plan to implement emitLeading/TrailingFence for all
backends that setInsertFencesForAtomic(true), which will allow both making them
less conservative and simplifying SelectionDAGBuilder once they are all using
this interface.
This should not cause any functionnal change so the existing tests are used
and not modified.
Test Plan: make check-all, benefits from existing tests of atomics on ARM
Reviewers: jfb, t.p.northover
Subscribers: aemerson, llvm-commits
Differential Revision: http://reviews.llvm.org/D5179
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218329
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Lang Hames [Tue, 23 Sep 2014 19:20:57 +0000 (19:20 +0000)]
[MCJIT] Fix some more RuntimeDyld debugging output format specifiers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218328
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Lang Hames [Tue, 23 Sep 2014 19:17:48 +0000 (19:17 +0000)]
[MCJIT] Remove PPCRelocations.h - it's no longer used.
This was overlooked in r218320, which removed the relocation headers for other
targets. Thanks to Ulrich Weigand for catching it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218327
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Robin Morisset [Tue, 23 Sep 2014 18:33:21 +0000 (18:33 +0000)]
Just add a fixme about a possibly faster implementation of some atomic loads on some ARM processors
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218326
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Matt Arsenault [Tue, 23 Sep 2014 18:30:57 +0000 (18:30 +0000)]
Fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218324
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Chandler Carruth [Tue, 23 Sep 2014 18:16:12 +0000 (18:16 +0000)]
[x86] Teach the new shuffle lowering's blend functionality to use AVX2's
VPBLENDD where appropriate even on 128-bit vectors.
According to Agner's tables, this instruction is significantly higher
throughput (can execute on any port) on Haswell chips so we should
aggressively try to form it when available.
Sadly, this loses our delightful shuffle comments. I'll add those back
for VPBLENDD next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218322
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Lang Hames [Tue, 23 Sep 2014 18:08:47 +0000 (18:08 +0000)]
[MCJIT] Nuke MachineRelocation and MachineCodeEmitter. Now that the old JIT is
gone they're no longer needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218320
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Jingyue Wu [Tue, 23 Sep 2014 17:35:28 +0000 (17:35 +0000)]
[docs] Fixed a typo in Atomics.rst
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218319
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Lang Hames [Tue, 23 Sep 2014 17:10:24 +0000 (17:10 +0000)]
[MCJIT] Remove a few more references to JITMemoryManager that survived r218316.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218318
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Lang Hames [Tue, 23 Sep 2014 17:02:24 +0000 (17:02 +0000)]
[MCJIT] Remove #include of JITMemoryManager that accidentally survived r218316.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218317
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Lang Hames [Tue, 23 Sep 2014 16:56:02 +0000 (16:56 +0000)]
[MCJIT] Delete the JTIMemoryManager and associated APIs.
This patch removes the old JIT memory manager (which does not provide any
useful functionality now that the old JIT is gone), and migrates the few
remaining clients over to SectionMemoryManager.
http://llvm.org/PR20848
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218316
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Sanjay Patel [Tue, 23 Sep 2014 16:24:20 +0000 (16:24 +0000)]
Use SDValue bool operator to reduce code. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218314
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Oliver Stannard [Tue, 23 Sep 2014 15:38:11 +0000 (15:38 +0000)]
Fix segfault in AArch64 backend with -g and -mbig-endian
Fix a null pointer dereference when trying to swap the endianness of
fixups in the .eh_frame section in the AArch64 backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218311
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NAKAMURA Takumi [Tue, 23 Sep 2014 14:41:02 +0000 (14:41 +0000)]
Rework r218304, "ExecutionEngineTests: Call llvm_shutdown() on exit for ManagedStatic introduced in r218151."
r218304 caused crash on msvc builder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218308
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NAKAMURA Takumi [Tue, 23 Sep 2014 14:19:09 +0000 (14:19 +0000)]
valgrind/x86_64-pc-linux-gnu.supp: We don't care if sed leaks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218307
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Timur Iskhodzhanov [Tue, 23 Sep 2014 14:07:12 +0000 (14:07 +0000)]
Fix a small typo in the test comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218306
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Sid Manning [Tue, 23 Sep 2014 13:55:50 +0000 (13:55 +0000)]
Loop instead of individual def's for each GPR.
Differential Revision: http://reviews.llvm.org/D5450
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218305
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NAKAMURA Takumi [Tue, 23 Sep 2014 13:49:51 +0000 (13:49 +0000)]
ExecutionEngineTests: Call llvm_shutdown() on exit for ManagedStatic introduced in r218151.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218304
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Timur Iskhodzhanov [Tue, 23 Sep 2014 13:49:51 +0000 (13:49 +0000)]
Rebuild the inputs for the codeview-linetables.test with VS2013
Also provide reproducible instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218303
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Petar Jovanovic [Tue, 23 Sep 2014 12:54:19 +0000 (12:54 +0000)]
Do not destroy external linkage when deleting function body
The function deleteBody() converts the linkage to external and thus destroys
original linkage type value. Lack of correct linkage type causes wrong
relocations to be emitted later.
Calling dropAllReferences() instead of deleteBody() will fix the issue.
Differential Revision: http://reviews.llvm.org/D5415
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218302
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Chandler Carruth [Tue, 23 Sep 2014 11:15:19 +0000 (11:15 +0000)]
[x86] Teach the vector comment parsing and printing to correctly handle
undef in the shuffle mask. This shows up when we're printing comments
during lowering and we still have an IR-level constant hanging around
that models undef.
A nice consequence of this is *much* prettier test cases where the undef
lanes actually show up as undef rather than as a particular set of
values. This also allows us to print shuffle comments in cases that use
undef such as the recently added variable VPERMILPS lowering. Now those
test cases have nice shuffle comments attached with their details.
The shuffle lowering for PSHUFB has been augmented to use undef, and the
shuffle combining has been augmented to comprehend it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218301
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Chandler Carruth [Tue, 23 Sep 2014 10:08:29 +0000 (10:08 +0000)]
[x86] Teach the AVX1 path of the new vector shuffle lowering one more
trick that I missed.
VPERMILPS has a non-immediate memory operand mode that allows it to do
asymetric shuffles in the two 128-bit lanes. Use this rather than two
shuffles and a blend.
However, it turns out the variable shuffle path to VPERMILPS (and
VPERMILPD, although that one offers no functional differenc from the
immediate operand other than variability) wasn't even plumbed through
codegen. Do such plumbing so that we can reasonably emit
a variable-masked VPERMILP instruction. Also plumb basic comment parsing
and printing through so that the tests are reasonable.
There are still a few tests which don't show the shuffle pattern. These
are tests with undef lanes. I'll teach the shuffle decoding and printing
to handle undef mask entries in a follow-up. I've looked at the masks
and they seem reasonable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218300
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Michael Kuperstein [Tue, 23 Sep 2014 08:48:01 +0000 (08:48 +0000)]
Ensure bitcode encoding stays stable.
This includes constants, attributes, and some additional instructions not covered by previous tests.
Work was done by lama.saba@intel.com.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218297
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Argyrios Kyrtzidis [Tue, 23 Sep 2014 06:06:43 +0000 (06:06 +0000)]
[ADT/IntrusiveRefCntPtr] Give friend access to IntrusiveRefCntPtr<X> so the relevant move constructor can access 'Obj'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218295
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NAKAMURA Takumi [Tue, 23 Sep 2014 01:09:46 +0000 (01:09 +0000)]
Windows/DynamicLibrary.inc: Remove 'extern "C"' in ELM_Callback.
'extern "C" static' is not accepted by g++-4.7. Rather to tweak, I just removed 'extern "C"', since it doesn't affect the ABI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218290
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Sanjay Patel [Mon, 22 Sep 2014 22:46:44 +0000 (22:46 +0000)]
tighten up checks
We manage to generate all of the matching instructions (and a lot more) via
the reciprocal optimization function - even if we completely remove the square
root optimization. With CHECK_NEXT, we assure that we're executing the
expected square root optimization paths and not generating extra insts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218284
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Chris Bieneman [Mon, 22 Sep 2014 22:39:20 +0000 (22:39 +0000)]
Converting terminalHasColors mutex to a global ManagedStatic to avoid the static destructor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218283
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