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Commit Graph

104873 Commits

Author SHA1 Message Date
Andrea Di Biagio
de7985179f [X86] Always prefer to lower a VECTOR_SHUFFLE into a BLENDI instead of SHUFP (or VPERM2X128).
This patch teaches method 'LowerVECTOR_SHUFFLE' to give higher precedence to
the check for 'isBlendMask'; the idea is that, when possible, we should firstly
check if a shuffle performs a blend, and in case, try to lower it into a BLENDI
instead of selecting a SHUFP or (worse) a VPERM2X128.

In general:
 - AVX VBLENDPS/D always have better latency and throughput than VPERM2F128;
 - BLENDPS/D instructions tend to always have better 'reciprocal throughput'
   than the equivalent SHUFPS/D;
 - Both BLENDPS/D and SHUFPS/D are often decoded into the same number of
   m-ops; however, a m-op obtained from a BLENDPS/D can be scheduled to more
   than one execution port.

This patch:
 - Moves the check for 'isBlendMask' immediately before the check for
   'isSHUFPMask' within method 'LowerVECTOR_SHUFFLE';
 - Updates existing tests for sse/avx shuffle/blend instructions to verify
   that we select (v)blendps/d when possible (instead of (v)shufps/d or
   vperm2f128).

llvm-svn: 211720
2014-06-25 17:41:58 +00:00
Juergen Ributzka
15c30a5d46 Fix indentation.
llvm-svn: 211717
2014-06-25 16:49:37 +00:00
Rafael Espindola
4cfe49663b Fix the build.
llvm-svn: 211715
2014-06-25 15:47:36 +00:00
Rafael Espindola
196881cf29 Move expression visitation logic up to MCStreamer.
Remove the duplicate from MCRecordStreamer. No functionality change.

llvm-svn: 211714
2014-06-25 15:45:33 +00:00
Eli Bendersky
90bda3bffd Add some test files for r211710.
llvm-svn: 211711
2014-06-25 15:41:39 +00:00
Eli Bendersky
def2619060 Rename loop unrolling and loop vectorizer metadata to have a common prefix.
[LLVM part]

These patches rename the loop unrolling and loop vectorizer metadata
such that they have a common 'llvm.loop.' prefix.  Metadata name
changes:

llvm.vectorizer.* => llvm.loop.vectorizer.*
llvm.loopunroll.* => llvm.loop.unroll.*

This was a suggestion from an earlier review
(http://reviews.llvm.org/D4090) which added the loop unrolling
metadata. 

Patch by Mark Heffernan.

llvm-svn: 211710
2014-06-25 15:41:00 +00:00
JF Bastien
00d9135fdd Fix = delete in MSVC build from r211705
MSVC doesn't support = delete yet, use LLVM_DELETED_FUNCTION instead.

Related to: http://reviews.llvm.org/D3390

llvm-svn: 211709
2014-06-25 15:38:02 +00:00
Rafael Espindola
0e71694bfa Simplify the visitation of target expressions. No functionality change.
llvm-svn: 211707
2014-06-25 15:29:54 +00:00
JF Bastien
80d81f27d3 Random Number Generator (llvm)
Provides an abstraction for a random number generator (RNG) that produces a stream of pseudo-random numbers.
The current implementation uses C++11 facilities and is therefore not cryptographically secure.

The RNG is salted with the text of the current command line invocation.
In addition, a user may specify a seed (reproducible builds).

In clang, the seed can be set via

-frandom-seed=X
In the back end, the seed can be set via

-rng-seed=X
This is the llvm part of the patch.
clang part: D3391

URL: http://reviews.llvm.org/D3390
Author: yln

I'm landing this for the second time, it broke Windows bots the first time around.

llvm-svn: 211705
2014-06-25 15:21:42 +00:00
Rafael Espindola
d7f079b49c Simplify AddValueSymbols. No functionality change.
llvm-svn: 211701
2014-06-25 14:42:14 +00:00
Evgeniy Stepanov
cda29aab74 [msan] Fix bad interaction between with-calls mode and chained origin tracking.
Origin history should only be recorded for uninitialized values, because it is
meaningless otherwise. This change moves __msan_chain_origin to the runtime
library side and makes it conditional on the corresponding shadow value.

Previous code was correct, but _very_ inefficient.

llvm-svn: 211700
2014-06-25 14:41:57 +00:00
Rafael Espindola
6eca6c6b38 Don't leak a file descriptor.
llvm-svn: 211699
2014-06-25 14:35:59 +00:00
Logan Chien
b6044edb18 Code cleanup.
llvm-svn: 211697
2014-06-25 13:46:17 +00:00
Chandler Carruth
4a4a94b49b Add Polly to the ignored trees.
llvm-svn: 211695
2014-06-25 13:13:36 +00:00
Chandler Carruth
2262038283 [x86] Add intrinsics for the pshufd, pshuflw, and pshufhw instructions.
llvm-svn: 211694
2014-06-25 13:12:54 +00:00
NAKAMURA Takumi
c5a2c81f7e Re-apply r211399, "Generate native unwind info on Win64" with a fix to ignore SEH pseudo ops in X86 JIT emitter.
--
This patch enables LLVM to emit Win64-native unwind info rather than
DWARF CFI.  It handles all corner cases (I hope), including stack
realignment.

Because the unwind info is not flexible enough to describe stack frames
with a gap of unknown size in the middle, such as the one caused by
stack realignment, I modified register spilling code to place all spills
into the fixed frame slots, so that they can be accessed relative to the
frame pointer.

Patch by Vadim Chugunov!

Reviewed By: rnk

Differential Revision: http://reviews.llvm.org/D4081

llvm-svn: 211691
2014-06-25 12:41:52 +00:00
NAKAMURA Takumi
35a44c8eda Reformat.
llvm-svn: 211689
2014-06-25 12:40:56 +00:00
Andrea Di Biagio
7f4e676911 [X86] Add target combine rule to select ADDSUB instructions from a build_vector
This patch teaches the backend how to combine a build_vector that implements
an 'addsub' between packed float vectors into a sequence of vector add
and vector sub followed by a VSELECT.

The new VSELECT is expected to be lowered into a BLENDI.
At ISel stage, the sequence 'vector add + vector sub + BLENDI' is
pattern-matched against ISel patterns added at r211427 to select
'addsub' instructions.
Added three more ISel patterns for ADDSUB.

Added test sse3-avx-addsub-2.ll to verify that we correctly emit 'addsub'
instructions.

llvm-svn: 211679
2014-06-25 10:02:21 +00:00
Evgeniy Stepanov
5dad33bfe8 Factor out part of LICM::sink into a helper function.
llvm-svn: 211678
2014-06-25 09:17:21 +00:00
Alexey Volkov
ba8b63c17a Fix unresolved symbols when loading gold plugin
Differential Revision: http://reviews.llvm.org/D4275

llvm-svn: 211675
2014-06-25 08:04:58 +00:00
Evgeniy Stepanov
aeb724c213 [LICM] Don't create more than one copy of an instruction per loop exit block when sinking.
Fixes exponential compilation complexity in PR19835, caused by
LICM::sink not handling the following pattern well:

f = op g
e = op f, g
d = op e
c = op d, e
b = op c
a = op b, c

When an instruction with N uses is sunk, each of its operands gets N
new uses (all of them - phi nodes). In the example above, if a had 1
use, c would have 2, e would have 4, and g would have 8.

llvm-svn: 211673
2014-06-25 07:54:58 +00:00
Rafael Espindola
bbdd74d0fb Fix another asserting method in the null streamer.
llvm-svn: 211668
2014-06-25 05:37:58 +00:00
Rafael Espindola
f314cd4f5f Fix a regression from r211653.
The method was empty in the null streamer but I mistakenly replaced it with
the aborting one in MCStreamer.

llvm-svn: 211666
2014-06-25 05:31:22 +00:00
NAKAMURA Takumi
fdee168275 MCNullStreamer.cpp: Roll back a few empty methods that have been marked as unreachable in MCStreamer.cpp.
void EmitCOFFSecRel32(MCSymbol const *Symbol) override {}
  void EmitGPRel32Value(const MCExpr *Value) override {}

It should fix crash like "llc -mtriple=i686-cygwin -filetype=null".

llvm-svn: 211664
2014-06-25 04:34:36 +00:00
NAKAMURA Takumi
dc31d81b4f CodeGen/X86/pr20088.ll: Add -march=x86-64, or llc fails due to non-x86 default target.
llvm-svn: 211659
2014-06-25 03:05:47 +00:00
Alp Toker
af677c39a3 Use SourceMgr::getMemoryBuffer() in a couple of places
Cleanup only.

llvm-svn: 211656
2014-06-25 00:41:15 +00:00
Rafael Espindola
44abada33b Move some trivial methods up to MCStreamer.
This saves some duplicated boilerplate in RecordStreamer and NullStreamer.

llvm-svn: 211653
2014-06-25 00:27:53 +00:00
Lang Hames
85285a01f4 [RuntimeDyld] Adds the necessary hooks to MCJIT to be able to debug generated
MachO files using the GDB JIT debugging interface.

Patch by Keno Fischer. Thanks Keno!

llvm-svn: 211652
2014-06-25 00:20:53 +00:00
Rafael Espindola
c718fdc4f6 Simplify the handling of .cfi_endproc.
No functionality change.

llvm-svn: 211651
2014-06-25 00:13:59 +00:00
Rafael Espindola
00c3a7ea4c Simplify EmitLabel.
All the "real" streamers were already calling to MCStreamer::EmitLabel
to do part of the work.

llvm-svn: 211646
2014-06-24 23:54:40 +00:00
Juergen Ributzka
236ea1c61a [FastISel][X86] Fold XALU condition into branch and compare.
Optimize the codegen of select and branch instructions to directly use the
EFLAGS from the {s|u}{add|sub|mul}.with.overflow intrinsics.

llvm-svn: 211645
2014-06-24 23:51:21 +00:00
Tom Stellard
86f1137544 R600/SI: Use a ComplexPattern for MUBUF stores
Now that non-leaf ComplexPatterns are allowed we can fold all the MUBUF
store patterns into the instruction definition.  We will also be able to
reuse this new ComplexPattern for MUBUF loads and atomic operations.

llvm-svn: 211644
2014-06-24 23:33:07 +00:00
Tom Stellard
840992bb71 R600: Promote i64 stores to v2i32
Now we need only one 64-bit pattern for stores.

llvm-svn: 211643
2014-06-24 23:33:04 +00:00
NAKAMURA Takumi
bd0dc4812d ldr-pseudo-obj-errors.s: Fix silly copypasto.
llvm-svn: 211642
2014-06-24 23:18:07 +00:00
NAKAMURA Takumi
cd2bcef166 llvm/test/MC/AArch64/ldr-pseudo-obj-errors.s: Add -triple=aarch64-linux. AArch64 is unaware of PECOFF for now.
FIXME: This should pass for also targeting aarch64-darwin.
llvm-svn: 211640
2014-06-24 23:11:42 +00:00
Rafael Espindola
c0fea93ce8 Print a=b as an assignment.
In assembly the expression a=b is parsed as an assignment, so it should be
printed as one.

This remove a truly horrible hack for producing a label with "a=.". It would
be used by codegen but would never be reached by the asm parser. Sorry I
missed this when it was first committed.

llvm-svn: 211639
2014-06-24 22:45:16 +00:00
Matt Arsenault
37d6d91b5b R600: Fix inconsistency in rsq instructions.
R600 was using a clamped version of rsq, but SI was not. Add a
new rsq_clamped intrinsic and use them consistently.

It's unclear to me from the documentation what behavior
the R600 instructions have, so I assume they have the legacy behavior
described by the SI documents. For R600, use RECIPSQRT_IEEE
for both llvm.AMDGPU.rsq.legacy and llvm.AMDGPU.rsq. R600 also
has RECIPSQRT_FF, which I'm not sure how it fits in here.

llvm-svn: 211637
2014-06-24 22:13:39 +00:00
Sanjay Patel
def1964051 fixed a few typos in comments
llvm-svn: 211634
2014-06-24 21:11:51 +00:00
David Blaikie
ad1b24c1a0 Fix up scoping in a few tests (and delete one that validates unnecessary behavior).
Most of this is just tests that were silently succeeding in spite of
schema changes I made over a year ago. Cleaning them up as they lead to
failures in a change I'm working on/will come soon.

test/DebugInfo/2010-01-19-DbgScope.ll was removed as it tested miscoping
where a DebugLoc described a location not in the current function. The
test case doesn't describe why this is a valid situation and should be
supported, so I'm removing it and shortly going to commit changes that
make this firmly unsupported/assert-fail.

llvm-svn: 211628
2014-06-24 20:10:27 +00:00
Bill Schmidt
bfe90f8c83 [PPC64] Fix PR20071 (fctiduz generated for targets lacking that instruction)
PR20071 identifies a problem in PowerPC's fast-isel implementation for
floating-point conversion to integer.  The fctiduz instruction was added in
Power ISA 2.06 (i.e., Power7 and later).  However, this instruction is being
generated regardless of which 64-bit PowerPC target is selected.

The intent is for fast-isel to punt to DAG selection when this instruction is
not available.  This patch implements that change.  For testing purposes, the
existing fast-isel-conversion.ll test adds a RUN line for -mcpu=970 and tests
for the expected code generation.  Additionally, the existing test
fast-isel-conversion-p5.ll was found to be incorrectly expecting the
unavailable instruction to be generated.  I've removed these test variants
since we have adequate coverage in fast-isel-conversion.ll.

llvm-svn: 211627
2014-06-24 20:05:18 +00:00
Robert Khasanov
c1b0024016 vpblend intrinsics combines as shifts intrinsics due to absence return stmt between them
Fix PR20088

Differential Revision: http://reviews.llvm.org/D4277

llvm-svn: 211617
2014-06-24 18:08:04 +00:00
Matt Arsenault
11e06d5cd5 R600: Remove DIV_INF
This corresponded to an amdil instruction which there is
a 2 instruction equivalent for.

llvm-svn: 211616
2014-06-24 17:42:16 +00:00
Matt Arsenault
7819e41b84 R600/SI: Move pattern to instruction definition
llvm-svn: 211614
2014-06-24 17:17:06 +00:00
Weiming Zhao
f75734dbe4 Fix test case in r211605/r211533
The test case in
"Fix PR20056: Implement pseudo LDR <reg>, =<literal/label> for AArch64" should
only work with Linux.

llvm-svn: 211613
2014-06-24 17:05:43 +00:00
Diego Novillo
51b3abee30 Add new debug kind LocTrackingOnly.
Summary:
This new debug emission kind supports emitting line location
information in all instructions, but stops code generation
from emitting debug info to the final output.

This mode is useful when the backend wants to track source
locations during code generation, but it does not want to
produce debug info. This is currently used by optimization
remarks (-pass-remarks, -pass-remarks-missed and
-pass-remarks-analysis).

To prevent debug info emission, DIBuilder never inserts the
annotation 'llvm.dbg.cu' when LocTrackingOnly is enabled.

Reviewers: echristo, dblaikie

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D4234

llvm-svn: 211609
2014-06-24 17:02:03 +00:00
Weiming Zhao
23e9a680c2 Resubmit commit r211533
"Fix PR20056: Implement pseudo LDR <reg>, =<literal/label> for AArch64"
Missed files are added in this commit.

llvm-svn: 211605
2014-06-24 16:21:38 +00:00
David Majnemer
02a115bee2 CodeGen: Avoid multiple strlen calls
Use a StringRef to hold our section prefix.  This avoids multiple calls
to strlen.

llvm-svn: 211602
2014-06-24 16:01:53 +00:00
Christian Pirker
4deae9a4a4 ARM: Fix TPsoft for Thumb mode
Reviewed at http://reviews.llvm.org/D4230

llvm-svn: 211601
2014-06-24 15:45:59 +00:00
Rafael Espindola
c24f075f54 Replace two release calls with std::move. I missed this on the previous commit.
llvm-svn: 211597
2014-06-24 14:25:17 +00:00
Rafael Espindola
3df1c115ec Pass a unique_ptr<MemoryBuffer> to the constructors in the Binary hierarchy.
Once the objects are constructed, they own the buffer. Passing a unique_ptr
makes that clear.

llvm-svn: 211595
2014-06-24 13:56:32 +00:00