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5 years ago[MCA] Minor refactoring of method DefaultResourceStrategy::select. NFCI
Andrea Di Biagio [Wed, 2 Jan 2019 15:40:52 +0000 (15:40 +0000)]
[MCA] Minor refactoring of method DefaultResourceStrategy::select. NFCI

Common code used by the default resource strategy to select pipeline resources
has been moved to an helper function.

The new selection logic has been slightly rewritten to get rid of a redundant
zero check on the `ReadyMask` value. Before this patch, method select internally
called function `PowerOf2Floor` to compute the next ready pipeline resource.
However, `PowerOf2Floor` forces an implicit (redundant) zero check on the input
value. By construction, `ReadyMask` can never be zero. This patch replaces the
call to `PowerOf2Floor` with an equivalent block of code which avoids the
redundant zero check. This gives a minor 3-3.5% speedup on a release build.

No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350218 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: bugpoint, dsymutil, llvm-opt-report
Nico Weber [Wed, 2 Jan 2019 12:43:56 +0000 (12:43 +0000)]
[gn build] Add some llvm/tools: bugpoint, dsymutil, llvm-opt-report

Also add build file for dependency llvm/lib/OptRemarks.

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56192

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350217 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-c-test, llvm-cfi-verify, llvm-cov, llvm-cvtres
Nico Weber [Wed, 2 Jan 2019 12:42:39 +0000 (12:42 +0000)]
[gn build] Add some llvm/tools: llvm-c-test, llvm-cfi-verify, llvm-cov, llvm-cvtres

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56191

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350216 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-cxxdump, llvm-cxxfilt, llvm-cxxmap
Nico Weber [Wed, 2 Jan 2019 12:40:04 +0000 (12:40 +0000)]
[gn build] Add some llvm/tools: llvm-cxxdump, llvm-cxxfilt, llvm-cxxmap

Needed for check-llvm.

This is the last target reading llvm_install_binutils_symlinks.

Differential Revision: https://reviews.llvm.org/D56190

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350215 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-diff, llvm-dwp
Nico Weber [Wed, 2 Jan 2019 12:39:05 +0000 (12:39 +0000)]
[gn build] Add some llvm/tools: llvm-diff, llvm-dwp

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56189

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350214 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-mca, llvm-mt
Nico Weber [Wed, 2 Jan 2019 12:37:52 +0000 (12:37 +0000)]
[gn build] Add some llvm/tools: llvm-mca, llvm-mt

Also add build file for dependency llvm/lib/MCA.

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56166

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350213 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-size, llvm-split, llvm-strings
Nico Weber [Wed, 2 Jan 2019 12:34:57 +0000 (12:34 +0000)]
[gn build] Add some llvm/tools: llvm-size, llvm-split, llvm-strings

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56164

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350212 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-xray, sancov, sanstats, verify-uselistorder...
Nico Weber [Wed, 2 Jan 2019 12:32:49 +0000 (12:32 +0000)]
[gn build] Add some llvm/tools: llvm-xray, sancov, sanstats, verify-uselistorder, yaml-bench

Also add build file for dependency llvm/lib/XRay.

Needed for check-llvm.

(yaml-bench is an llvm/util, not an llvm/tool.)

Differential Revision: https://reviews.llvm.org/D56163

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350211 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AMDGPU] Handle OR as operand of raw load/store
Piotr Sobczak [Wed, 2 Jan 2019 09:47:41 +0000 (09:47 +0000)]
[AMDGPU] Handle OR as operand of raw load/store

Summary:
Use isBaseWithConstantOffset() which handles OR as an operand
to llvm.amdgcn.raw.buffer.load and llvm.amdgcn.raw.buffer.store.

Change-Id: Ifefb9dc5ded8710d333df07ab1900b230e33539a

Reviewers: nhaehnle, mareko, arsenm

Reviewed By: arsenm

Subscribers: arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D55999

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350208 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRevert rL350035 "[llvm-exegesis] Clustering: don't enqueue a point multiple times"
Clement Courbet [Wed, 2 Jan 2019 09:21:00 +0000 (09:21 +0000)]
Revert rL350035 "[llvm-exegesis] Clustering: don't enqueue a point multiple times"

Let's discuss this on the review thread before submitting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350207 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Remove the separate SMUL8/UMUL8 X86ISD opcodes by merging with SMUL/UMUL. Remov...
Craig Topper [Wed, 2 Jan 2019 06:40:11 +0000 (06:40 +0000)]
[X86] Remove the separate SMUL8/UMUL8 X86ISD opcodes by merging with SMUL/UMUL. Remove the second result from X86ISD::UMUL.

All of these use custom isel so we can pretty easily detect the differences in the custom code in X86ISelDAGToDAG. The ISD opcodes just need to express the desired semantics not the details of how they would be selected by isel. So unifying them lets us remove the special casing from lowering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350206 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Allow LowerSELECT and LowerBRCOND to directly lower i8 UMULO/SMULO.
Craig Topper [Wed, 2 Jan 2019 05:46:03 +0000 (05:46 +0000)]
[X86] Allow LowerSELECT and LowerBRCOND to directly lower i8 UMULO/SMULO.

These require a different X86ISD node to be created than i16/i32/i64. I guess no one wanted to add the special code for that except in LowerXALUO. But now LowerXALUO, LowerSELECT, and LowerBRCOND all use a common helper function so they all share the special code.

Unfortunately, there are no test changes because we seem to correct the miss in a DAG combine later. I did verify it manually using test cases from xmulo.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350205 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add i8/i16 smulo/umulo test cases where the overflow indication is used by...
Craig Topper [Wed, 2 Jan 2019 05:46:02 +0000 (05:46 +0000)]
[X86] Add i8/i16 smulo/umulo test cases where the overflow indication is used by a mask.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350204 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Remove KNL specific check prefix from xmulo.ll test. NFC
Craig Topper [Wed, 2 Jan 2019 05:46:00 +0000 (05:46 +0000)]
[X86] Remove KNL specific check prefix from xmulo.ll test. NFC

This was added at a time when i1 was a legal type with avx512f and there was a bug. i1 is no longer considered a legal type with avx512f so there should be no codegen difference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350203 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[InstCombine] canonicalize raw IR rotate patterns to funnel shift
Sanjay Patel [Tue, 1 Jan 2019 21:51:39 +0000 (21:51 +0000)]
[InstCombine] canonicalize raw IR rotate patterns to funnel shift

The final piece of IR-level analysis to allow this was committed with:
rL350188

Using the intrinsics should improve transforms based on cost models
like vectorization and inlining.

The backend should be prepared too, so we can now canonicalize more
sequences of shift/logic to the intrinsics and know that the end
result should be equal or better to the original code even if the
target does not have an actual rotate instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350199 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Factor the core code out of LowerXALUO into a helper function. Use it in LowerB...
Craig Topper [Tue, 1 Jan 2019 19:34:11 +0000 (19:34 +0000)]
[X86] Factor the core code out of LowerXALUO into a helper function. Use it in LowerBRCOND and LowerSELECT to avoid some duplicated code.

This makes it easier to keep the LowerBRCOND and LowerSELECT code in sync with LowerXALUO so they always pick the same operation for overflowing instructions.

This is inspired by the helper functions used by ARM and AArch64 for the same purpose.

The test change is because LowerSELECT was not in sync with LowerXALUO with regard to INC/DEC for SADDO/SSUBO.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350198 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LLVM-C] bool -> LLVMBool
Robert Widmann [Tue, 1 Jan 2019 19:03:37 +0000 (19:03 +0000)]
[LLVM-C] bool -> LLVMBool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350197 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LLVM-C] Add Accessors for Discarding Value Names in the IR
Robert Widmann [Tue, 1 Jan 2019 18:56:51 +0000 (18:56 +0000)]
[LLVM-C] Add Accessors for Discarding Value Names in the IR

Summary: Add accessors so the performance improvement from this setting is accessible to third parties.

Reviewers: whitequark, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D56179

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350196 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Remove KNL specific check prefix from xaluo.ll test. NFC
Craig Topper [Tue, 1 Jan 2019 18:44:44 +0000 (18:44 +0000)]
[X86] Remove KNL specific check prefix from xaluo.ll test. NFC

This was added at a time when i1 was a legal type with avx512f and there was a bug. i1 is no longer considered a legal type with avx512f so there should be no codegen difference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350195 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add test cases to show where LowerSELECT doesn't select SADDO/SSUBO to INC...
Craig Topper [Tue, 1 Jan 2019 18:44:42 +0000 (18:44 +0000)]
[X86] Add test cases to show where LowerSELECT doesn't select SADDO/SSUBO to INC/DEC, but LowerXALUOOp does. Leading to duplicate code.

When SADDO/SSUBO is used as a part of a condition, the X86 backend has to lower the instruction twice. One for the flags use and then once for the data use. These two selections should be kept in sync so they end up with one node providing the data and the flags. This doesn't seem to be happening for INC/DEC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350194 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[x86] move/rename helper for horizontal op codegen; NFC
Sanjay Patel [Tue, 1 Jan 2019 16:08:36 +0000 (16:08 +0000)]
[x86] move/rename helper for horizontal op codegen; NFC

Preliminary commit as suggested in D56011.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350193 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[BDCE] Regenerate test checks; NFC
Nikita Popov [Tue, 1 Jan 2019 12:27:23 +0000 (12:27 +0000)]
[BDCE] Regenerate test checks; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350190 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[BDCE] Remove -instsimplify from BDCE test; NFC
Nikita Popov [Tue, 1 Jan 2019 10:17:35 +0000 (10:17 +0000)]
[BDCE] Remove -instsimplify from BDCE test; NFC

To make it more obvious which part of the transformation is carried
out by BDCE. Also drop the CHECK-IO lines which only run -instsimplify
as they don't really seem meaningful if the main check doesn't run
-instsimplify either.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350189 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoReapply "[BDCE][DemandedBits] Detect dead uses of undead instructions"
Nikita Popov [Tue, 1 Jan 2019 10:05:26 +0000 (10:05 +0000)]
Reapply "[BDCE][DemandedBits] Detect dead uses of undead instructions"

This (mostly) fixes https://bugs.llvm.org/show_bug.cgi?id=39771.

BDCE currently detects instructions that don't have any demanded bits
and replaces their uses with zero. However, if an instruction has
multiple uses, then some of the uses may be dead (have no demanded bits)
even though the instruction itself is still live. This patch extends
DemandedBits/BDCE to detect such uses and replace them with zero.
While this will not immediately render any instructions dead, it may
lead to simplifications (in the motivating case, by converting a rotate
into a simple shift), break dependencies, etc.

The implementation tries to strike a balance between analysis power and
complexity/memory usage. Originally I wanted to track demanded bits on
a per-use level, but ultimately we're only really interested in whether
a use is entirely dead or not. I'm using an extra set to track which uses
are dead. However, as initially all uses are dead, I'm not storing uses
those user is also dead. This case is checked separately instead.

The previous attempt to land this lead to miscompiles, because cases
where uses were initially dead but were later found to be live during
further analysis were not always correctly removed from the DeadUses
set. This is fixed now and the added test case demanstrates such an
instance.

Differential Revision: https://reviews.llvm.org/D55563

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350188 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoReversing the commit in revision 350186. Revision causes regression in 4
Ayonam Ray [Tue, 1 Jan 2019 07:28:55 +0000 (07:28 +0000)]
Reversing the commit in revision 350186.  Revision causes regression in 4
tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350187 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoOmit range checks from jump tables when lowering switches with unreachable
Ayonam Ray [Tue, 1 Jan 2019 06:37:50 +0000 (06:37 +0000)]
Omit range checks from jump tables when lowering switches with unreachable
default

During the lowering of a switch that would result in the generation of a jump
table, a range check is performed before indexing into the jump table, for the
switch value being outside the jump table range and a conditional branch is
inserted to jump to the default block. In case the default block is
unreachable, this conditional jump can be omitted. This patch implements
omitting this conditional branch for unreachable defaults.

Review Reference: D52002

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350186 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[InstCombine] canonicalize MUL with NEG operand
Chen Zheng [Tue, 1 Jan 2019 01:09:20 +0000 (01:09 +0000)]
[InstCombine] canonicalize MUL with NEG operand

-X * Y --> -(X * Y)
X * -Y --> -(X * Y)

Differential Revision: https://reviews.llvm.org/D55961

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350185 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-exegesis, llvm-extract, llvm-link
Nico Weber [Mon, 31 Dec 2018 23:48:22 +0000 (23:48 +0000)]
[gn build] Add some llvm/tools: llvm-exegesis, llvm-extract, llvm-link

Also add build file for dependency llvm/lib/ExecutionEngine/MCJIT.

The exegesis stuff is pretty hairy and knows a lot about Target internals (in
general, not specifically in the GN build). I put the llvm-tblgen -gen-exegesis
call in llvm/tools/llvm-exegesis/lib/X86, instead of in llvm/lib/Target/X86
where it is in CMake land, and asked on D52932 why it's in that place in the
CMake build.

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56167

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350184 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add some llvm/tools: llvm-rc, llvm-rtdyld
Nico Weber [Mon, 31 Dec 2018 23:32:15 +0000 (23:32 +0000)]
[gn build] Add some llvm/tools: llvm-rc, llvm-rtdyld

Also add build file for dependencies llvm/lib/ExecutionEngine,
llvm/lib/ExecutionEngine/RuntimeDyld.

Needed for check-llvm.

Differential Revision: https://reviews.llvm.org/D56165

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350183 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add PR34641 masked shld/shrd test cases
Simon Pilgrim [Mon, 31 Dec 2018 19:46:18 +0000 (19:46 +0000)]
[X86] Add PR34641 masked shld/shrd test cases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350181 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add additional RUN lines to prepare for D56156. NFC
Craig Topper [Mon, 31 Dec 2018 19:09:32 +0000 (19:09 +0000)]
[X86] Add additional RUN lines to prepare for D56156. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350180 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[SelectionDAG] Add SIGN_EXTEND_VECTOR_INREG support to computeKnownBits.
Craig Topper [Mon, 31 Dec 2018 19:09:30 +0000 (19:09 +0000)]
[SelectionDAG] Add SIGN_EXTEND_VECTOR_INREG support to computeKnownBits.

Differential Revision: https://reviews.llvm.org/D56168

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350179 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add X86ISD::VSRAI to computeKnownBitsForTargetNode.
Craig Topper [Mon, 31 Dec 2018 19:09:27 +0000 (19:09 +0000)]
[X86] Add X86ISD::VSRAI to computeKnownBitsForTargetNode.

Differential Revision: https://reviews.llvm.org/D56169

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350178 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoKeep tablegen commands in alphabetical order. NFCI.
Simon Pilgrim [Mon, 31 Dec 2018 14:51:53 +0000 (14:51 +0000)]
Keep tablegen commands in alphabetical order. NFCI.

Mentioned on D56167.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350176 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[test] Fix propagating HOME envvar to unittests
Michal Gorny [Mon, 31 Dec 2018 13:48:12 +0000 (13:48 +0000)]
[test] Fix propagating HOME envvar to unittests

Propagate HOME environment variable to unittests.  This is necessary
to fix test failures resulting from pw_home pointing to a non-existing
directory while being overriden with HOME.  Apparently Gentoo users
hit this sometimes when they override build directory for Portage.

Original bug report: https://bugs.gentoo.org/674088

Differential Revision: https://reviews.llvm.org/D56162

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350175 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AArch64] Accept "sve" as arch feature in assembler
Martin Storsjo [Mon, 31 Dec 2018 10:22:04 +0000 (10:22 +0000)]
[AArch64] Accept "sve" as arch feature in assembler

Differential Revision: https://reviews.llvm.org/D56128

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350174 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[MSan] Handle llvm.is.constant intrinsic
Alexander Potapenko [Mon, 31 Dec 2018 09:42:23 +0000 (09:42 +0000)]
[MSan] Handle llvm.is.constant intrinsic

MSan used to report false positives in the case the argument of
llvm.is.constant intrinsic was uninitialized.
In fact checking this argument is unnecessary, as the intrinsic is only
used at compile time, and its value doesn't depend on the value of the
argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350173 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[DAGCombiner] Add missing one use check on the shuffle in the bitcast(shuffle(bitcast...
Craig Topper [Mon, 31 Dec 2018 05:40:46 +0000 (05:40 +0000)]
[DAGCombiner] Add missing one use check on the shuffle in the bitcast(shuffle(bitcast(s0),bitcast(s1))) -> shuffle(s0,s1) transform.

Found while trying out some other changes so I don't really have a test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350172 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Make `ninja check-clang` also run Clang's unit tests
Nico Weber [Mon, 31 Dec 2018 00:10:47 +0000 (00:10 +0000)]
[gn build] Make `ninja check-clang` also run Clang's unit tests

Also add a build file for clang/lib/ASTMatchers/Dynamic, which is only needed
by tests (and clang/tools/extra).

Also make llvm/utils/gn/build/sync_source_lists_from_cmake.py check that every
CMakeLists.txt file below {lld,clang}/unittests has a corresponding BUILD.gn
file, so we notice if new test binaries get added (since the failure mode for
missing GN build files for tests is just the tests silently not running in the
GN build).

Also add a unittest() macro for defining unit test targets, and add a lengthy
comment there about where the unit test binaries go and why.

With this, the build files for //clang are complete.

Differential Revision: https://reviews.llvm.org/D56116

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350171 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AArch64] Implement the .arch_extension directive
Martin Storsjo [Sun, 30 Dec 2018 21:06:32 +0000 (21:06 +0000)]
[AArch64] Implement the .arch_extension directive

Differential Revision: https://reviews.llvm.org/D56131

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350169 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[llvm-objcopy] [COFF] Use Error/Expected returns instead of calling reportError....
Martin Storsjo [Sun, 30 Dec 2018 20:35:43 +0000 (20:35 +0000)]
[llvm-objcopy] [COFF] Use Error/Expected returns instead of calling reportError. NFC.

Differential Revision: https://reviews.llvm.org/D55922

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350168 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Fix machine verify pass error for PATCHPOINT pseudo instruction that bad...
Kang Zhang [Sun, 30 Dec 2018 15:13:51 +0000 (15:13 +0000)]
[PowerPC] Fix machine verify pass error for PATCHPOINT pseudo instruction that bad machine code

Summary:
For SDAG, we pretend patchpoints aren't special at all until we emit the code for the pseudo.
Then the verifier runs and it seems like we have a use of an undefined register (the register will
be reserved later, but the verifier doesn't know that).

So this patch call setUsesTOCBasePtr before emit the code for the pseudo, so verifier can know
X2 is a reserved register.

Reviewed By: nemanjai

Differential Revision: https://reviews.llvm.org/D56148

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350165 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Fixed extra semicolon warning
David Bolvansky [Sun, 30 Dec 2018 13:18:17 +0000 (13:18 +0000)]
[NFC] Fixed extra semicolon warning
-This line, and those below, will be ignored--

M    lib/Support/Error.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350162 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Fix ADDE, SUBE do not know how to promote operator
Kang Zhang [Sun, 30 Dec 2018 07:48:09 +0000 (07:48 +0000)]
[PowerPC] Fix ADDE, SUBE do not know how to promote operator

Summary:
This patch is created to fix the Bugzilla bug 39815:
https://bugs.llvm.org/show_bug.cgi?id=39815

This patch is to support promotion integer result for the instruction ADDE, SUBE.

Reviewed By: hfinkel

Differential Revision: https://reviews.llvm.org/D56119

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350161 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Don't mark SEXTLOAD from v4i8/v4i16/v8i8 as Custom on pre-sse4.1.
Craig Topper [Sun, 30 Dec 2018 03:05:07 +0000 (03:05 +0000)]
[X86] Don't mark SEXTLOAD from v4i8/v4i16/v8i8 as Custom on pre-sse4.1.

This seems to be getting in the way more than its helping. This does mean we stop scalarizing some cases, but I'm not convinced the scalarization was really better.

Some of the changes to vsel-cmp-load.ll are a regression but D56156 should fix it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350159 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add custom type legalization for SIGN_EXTEND_VECTOR_INREG from 16i16/v32i8...
Craig Topper [Sun, 30 Dec 2018 02:30:34 +0000 (02:30 +0000)]
[X86] Add custom type legalization for SIGN_EXTEND_VECTOR_INREG from 16i16/v32i8 to v4i64 when v4i64 needs splitting.

This allows us to sign extend to v4i32 first. And then share that extension to implement the final steps to v4i64 using a pcmpgt and punpckl and punpckh.

We already do something similar for SIGN_EXTEND with -x86-experimental-vector-widening-legalization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350158 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC][NFC] Macro for register set defs for the Asm Parser
Nemanja Ivanovic [Sat, 29 Dec 2018 16:13:11 +0000 (16:13 +0000)]
[PowerPC][NFC] Macro for register set defs for the Asm Parser

We have some unfortunate code in the back end that defines a bunch of register
sets for the Asm Parser. Every time another class is needed in the parser, we
have to add another one of those definitions with explicit lists of registers.
This NFC patch simply provides macros to use to condense that code a little bit.

Differential revision: https://reviews.llvm.org/D54433

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350156 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Complete the custom legalization of vector int to fp conversion
Nemanja Ivanovic [Sat, 29 Dec 2018 13:40:48 +0000 (13:40 +0000)]
[PowerPC] Complete the custom legalization of vector int to fp conversion

A recent patch has added custom legalization of vector conversions of
v2i16 -> v2f64. This just rounds it out for other types where the input vector
has an illegal (narrower) type than the result vector. Specifically, this will
handle the following conversions:

v2i8 -> v2f64
v4i8 -> v4f32
v4i16 -> v4f32

Differential revision: https://reviews.llvm.org/D54663

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350155 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[InstCombine] [NFC] update testcases for canonicalize MUL with NEG operand
Chen Zheng [Sat, 29 Dec 2018 12:18:15 +0000 (12:18 +0000)]
[InstCombine] [NFC] update testcases for canonicalize MUL with NEG operand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350154 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Fix CR Bit spill pseudo expansion
Nemanja Ivanovic [Sat, 29 Dec 2018 11:43:54 +0000 (11:43 +0000)]
[PowerPC] Fix CR Bit spill pseudo expansion

The current CRBIT spill pseudo-op expansion creates a KILL instruction
that kills the CRBIT and defines the enclosing CR field. However, this
paints a false picture to the register allocator that all bits in the CR
field are killed so copies of other bits out of the field become dead and
removable.
This changes the expansion to preserve the KILL flag on the CRBIT as an
implicit use and to treat the CR field as an undef input.

Thanks to Hal Finkel for the review and Uli Weigand for implementation input.

Differential revision: https://reviews.llvm.org/D55996

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350153 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[mips] Show an error on attempt to use 64-bit PC-relative relocation
Simon Atanasyan [Sat, 29 Dec 2018 10:10:02 +0000 (10:10 +0000)]
[mips] Show an error on attempt to use 64-bit PC-relative relocation

The following code requests 64-bit PC-relative relocations unsupported
by MIPS ABI. Now it triggers an assertion. It's better to show an error
message.
```
foo:
  .quad bar - foo
```

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350152 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[mips] Show a regular error message on attempt to use one byte relocation
Simon Atanasyan [Sat, 29 Dec 2018 10:09:55 +0000 (10:09 +0000)]
[mips] Show a regular error message on attempt to use one byte relocation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350151 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add test case from PR38217. NFC
Craig Topper [Sat, 29 Dec 2018 07:14:30 +0000 (07:14 +0000)]
[X86] Add test case from PR38217. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350150 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoDrop SE cache early because loop parent can change in LoopSimplifyCFG
Max Kazantsev [Sat, 29 Dec 2018 04:26:22 +0000 (04:26 +0000)]
Drop SE cache early because loop parent can change in LoopSimplifyCFG

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350145 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[WebAssembly] Fix comments in ExplicitLocals (NFC)
Heejin Ahn [Sat, 29 Dec 2018 02:42:04 +0000 (02:42 +0000)]
[WebAssembly] Fix comments in ExplicitLocals (NFC)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350144 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoAdd vtable anchor to classes.
Richard Trieu [Sat, 29 Dec 2018 02:02:13 +0000 (02:02 +0000)]
Add vtable anchor to classes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350142 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Don't mark SEXTLOAD v4i8->v4i64 and v8i8->v8i64 as custom under vector widening...
Craig Topper [Sat, 29 Dec 2018 01:17:11 +0000 (01:17 +0000)]
[X86] Don't mark SEXTLOAD v4i8->v4i64 and v8i8->v8i64 as custom under vector widening legalization.

This was tricking us into making these operations and then letting them get scalarized later. But I can't prove that the scalarized version is actually better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350141 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[UnrollRuntime] NFC: Updated exiting tests and added more tests
Anna Thomas [Fri, 28 Dec 2018 19:21:50 +0000 (19:21 +0000)]
[UnrollRuntime] NFC: Updated exiting tests and added more tests

Added more tests for multiple exiting blocks to the LatchExit.
Today these cases are not supported. Patch to follow soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350135 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Directly emit X86ISD::PMULUDQ from the ReplaceNodeResults handling of v2i8...
Craig Topper [Fri, 28 Dec 2018 19:19:39 +0000 (19:19 +0000)]
[X86] Directly emit X86ISD::PMULUDQ from the ReplaceNodeResults handling of v2i8/v2i16/v2i32 multiply.

Previously we emitted a multiply and some masking that was supposed to matched to PMULUDQ, but the masking could sometimes be removed before we got a chance to match it. So instead just emit the PMULUDQ directly.

Remove the DAG combine that was added when the ReplaceNodeResults code was originally added. Add a new DAG combine to avoid regressions in shrink_vmul.ll

Some of the shrink_vmul.ll test cases now pick PMULUDQ instead of PMADDWD/PMULLD, but I think this should be an improvement on most CPUs.

I think all of this can go away if/when we switch to -x86-experimental-vector-widening-legalization

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350134 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[UnrollRuntime] NFC: Add comment and verify LCSSA
Anna Thomas [Fri, 28 Dec 2018 18:52:16 +0000 (18:52 +0000)]
[UnrollRuntime] NFC: Add comment and verify LCSSA

Added -verify-loop-lcssa to test cases.
Updated comments in ConnectProlog.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350131 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AArch64] Add command-line option for SB
Diogo N. Sampaio [Fri, 28 Dec 2018 17:14:58 +0000 (17:14 +0000)]
[AArch64] Add command-line option for SB

SB (Speculative Barrier) is only mandatory from 8.5
onwards but is optional from Armv8.0-A. This patch adds a command
line option to enable SB, as it was previously only possible to
enable by selecting -march=armv8.5-a.

This patch also moves to FeatureSB the old FeatureSpecRestrict.

Reviewers: pbarrio, olista01, t.p.northover, LukeCheeseman

Differential Revision: https://reviews.llvm.org/D55921

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350126 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[CodeView] Extend the `MemberAttributes` interface with the `isStatic` method
Aleksandr Urakov [Fri, 28 Dec 2018 17:03:24 +0000 (17:03 +0000)]
[CodeView] Extend the `MemberAttributes` interface with the `isStatic` method

Summary:
This patch extends the MemberAttributes interface with the isStatic method.
It is needed for D56126.

Reviewers: zturner, rnk

Reviewed By: zturner

Differential Revision: https://reviews.llvm.org/D56127

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350125 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AMDGPU][MC][DOC] Updated AMD GPU assembler description.
Dmitry Preobrazhensky [Fri, 28 Dec 2018 11:48:23 +0000 (11:48 +0000)]
[AMDGPU][MC][DOC] Updated AMD GPU assembler description.

Minor bugfixing and improvements.

See bug 36572: https://bugs.llvm.org/show_bug.cgi?id=36572

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350120 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Add failing test on LCSSA form preservation of LoopSimplifyCFG
Max Kazantsev [Fri, 28 Dec 2018 10:43:37 +0000 (10:43 +0000)]
[NFC] Add failing test on LCSSA form preservation of LoopSimplifyCFG

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350119 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] handle ISD:TRUNCATE in BitPermutationSelector
Hiroshi Inoue [Fri, 28 Dec 2018 08:00:39 +0000 (08:00 +0000)]
[PowerPC] handle ISD:TRUNCATE in BitPermutationSelector

This is the last one in a series of patches to support better code generation for bitfield insert.
BitPermutationSelector already support ISD::ZERO_EXTEND but not TRUNCATE.
This patch adds support for ISD:TRUNCATE in BitPermutationSelector.

For example of this test case,
struct s64b {
  int a:4;
  int b:16;
  int c:24;
};
void bitfieldinsert64b(struct s64b *p, unsigned char v) {
  p->b = v;
}

the selection DAG loos like:

t14: i32,ch = load<(load 4 from %ir.0)> t0, t2, undef:i64
       t18: i32 = and t14, Constant:i32<-1048561>
            t4: i64,ch = CopyFromReg t0, Register:i64 %1
          t22: i64 = AssertZext t4, ValueType:ch:i8
        t23: i32 = truncate t22
      t16: i32 = shl nuw nsw t23, Constant:i32<4>
    t19: i32 = or t18, t16
  t20: ch = store<(store 4 into %ir.0)> t14:1, t19, t2, undef:i64

By handling truncate in the BitPermutationSelector, we can use information from AssertZext when selecting t19 and skip the mask operation corresponding to t18.
So the generated sequences with and without this patch are

without this patch
rlwinm 5, 5, 0, 28, 11 # corresponding to t18
rlwimi 5, 4, 4, 20, 27
with this patch
rlwimi 5, 4, 4, 12, 27

Differential Revision: https://reviews.llvm.org/D49076

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350118 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoTemporarily disable term folding in LoopSimplifyCFG, add tests
Max Kazantsev [Fri, 28 Dec 2018 06:22:39 +0000 (06:22 +0000)]
Temporarily disable term folding in LoopSimplifyCFG, add tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350117 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LoopSimplifyCFG] Delete dead blocks in RPO
Max Kazantsev [Fri, 28 Dec 2018 06:08:51 +0000 (06:08 +0000)]
[LoopSimplifyCFG] Delete dead blocks in RPO

Deletion of dead blocks in arbitrary order may lead to failure
of assertion in `DeleteDeadBlock` that requires that we have
deleted all predecessors before we can delete the current block.
We should instead delete them in RPO order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350116 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Remove the implicit use of the register if it is replaced by Imm
QingShan Zhang [Fri, 28 Dec 2018 03:38:09 +0000 (03:38 +0000)]
[PowerPC] Remove the implicit use of the register if it is replaced by Imm
If we are changing the MI operand from Reg to Imm, we need also handle its implicit use if have.

Differential Revision: https://reviews.llvm.org/D56078

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350115 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] clang-format functions related to r350113
Zi Xuan Wu [Fri, 28 Dec 2018 02:45:17 +0000 (02:45 +0000)]
[NFC] clang-format functions related to r350113

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350114 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Fix assert from machine verify pass that atomic pseudo expanding causes...
Zi Xuan Wu [Fri, 28 Dec 2018 02:12:55 +0000 (02:12 +0000)]
[PowerPC] Fix assert from machine verify pass that atomic pseudo expanding causes mismatched register class

For atomic value operand which less than 4 bytes need to be masked.
And the related operation to calculate the newvalue can be done in 32 bit gprc.
So just use gprc for mask and value calculation.

Differential Revision: https://reviews.llvm.org/D56077

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350113 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] fix register class after converting X-FORM instruction to D-FORM instruction
Chen Zheng [Fri, 28 Dec 2018 01:02:35 +0000 (01:02 +0000)]
[PowerPC] fix register class after converting X-FORM instruction to D-FORM instruction
Differential Revision: https://reviews.llvm.org/D55806

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350111 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[CallSite removal] Add and flesh out APIs on the new `CallBase` base class that previ...
Chandler Carruth [Thu, 27 Dec 2018 23:40:17 +0000 (23:40 +0000)]
[CallSite removal] Add and flesh out APIs on the new `CallBase` base class that previously were only available on the `CallSite` wrapper.

Summary:
This will make migrating code easier and generally seems like a good collection
of API improvements.

Some of these APIs seem like more consistent / better naming of existing
ones. I've retained the old names for migration simplicit and am just
adding the new ones in this commit. I'll try to garbage collect these
once CallSite is gone.

Subscribers: sanjoy, mcrosier, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D55638

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350109 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add check-clang target and make it work
Nico Weber [Thu, 27 Dec 2018 23:38:58 +0000 (23:38 +0000)]
[gn build] Add check-clang target and make it work

With this, check-clang runs and passes all of clang's lit tests. It doesn't run
any of its unit tests yet.

Like with check-lld, running just ninja -C out/gn will build all prerequisites
needed to run tests, but it won't run the tests (so that the build becomes
clean after one build). Running ninja -C out/gn check-clang will build
prerequisites if needed and run the tests. The check-clang target never becomes
clean and runs tests every time.

Differential Revision: https://reviews.llvm.org/D56095

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350108 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Remove check that avoids creating PMULDQ with illegal types. Rely on SplitOpsAn...
Craig Topper [Thu, 27 Dec 2018 03:37:04 +0000 (03:37 +0000)]
[X86] Remove check that avoids creating PMULDQ with illegal types. Rely on SplitOpsAndApply to legalize it.

Create PMULDQ/PMULUDQ as long as the number of elements is a power of 2.

This seems to give some improvements in our ability to use SimplifyDemandedBits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350084 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Factor the core code out of LowerSETCC into a helper that can create CMP/BT...
Craig Topper [Thu, 27 Dec 2018 01:50:40 +0000 (01:50 +0000)]
[X86] Factor the core code out of LowerSETCC into a helper that can create CMP/BT/PTEST/KORTEST etc. without making an X86ISD::SETCC node. NFCI

Make each of the helper functions only return their comparison node and the condition code. Leave X86ISD::SETCC creation to the LowerSETCC function itself.

Looking into whether we can use this code directly in BRCOND and SELECT lowering instead of going through LowerSETCC which creates an X86ISD::SETCC node we need to look through.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350082 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Merge getBitTestCondition into LowerAndToBT. Don't create X86ISD::SETCC node...
Craig Topper [Thu, 27 Dec 2018 01:50:38 +0000 (01:50 +0000)]
[X86] Merge getBitTestCondition into LowerAndToBT. Don't create X86ISD::SETCC node in the merged function. NFCI

Only one of the 3 callers of LowerAndToBT need the SETCC node. Two of them have to look through it to find the operands they really need. Instead create it after the one call that needs it.

LowerAndToBT now returns both the BT node and the X86 specific condition code separately.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350081 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[WebAssembly] Added basic support for if/else/end_if in MC layer.
Wouter van Oortmerssen [Wed, 26 Dec 2018 22:55:26 +0000 (22:55 +0000)]
[WebAssembly] Added basic support for if/else/end_if in MC layer.

Summary:
These instructions are currently unused in our backend, but for
completeness it is good to support them, so they can be used with
the assembler in hand-written code.

Tests are very basic, signature support missing much like other blocks.

Reviewers: dschuff, aheejin

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D55973

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350079 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[WebAssembly] Make assembler check for proper nesting of control flow.
Wouter van Oortmerssen [Wed, 26 Dec 2018 22:46:18 +0000 (22:46 +0000)]
[WebAssembly] Make assembler check for proper nesting of control flow.

Summary:
It does so using a simple nesting stack, and gives clear errors upon
violation. This is unique to wasm, since most CPUs do not have
any nested constructs.

Had to add an end of file check to the general assembler for this.

Note: if/else/end instructions are not currently supported in our
tablegen defs, so these tests will be enabled in a follow-up.
They already pass the nesting check.

Reviewers: dschuff, aheejin

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D55797

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350078 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agomanpages: Update the URL for https
Sylvestre Ledru [Wed, 26 Dec 2018 22:34:44 +0000 (22:34 +0000)]
manpages: Update the URL for https

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350077 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[WebAssembly] Delete an unnecessary line in RegStackify
Heejin Ahn [Wed, 26 Dec 2018 22:33:35 +0000 (22:33 +0000)]
[WebAssembly] Delete an unnecessary line in RegStackify

`OneUseInst` is set outside of the loop before and `OneUse` does not
change throughout the loop, so this line is not necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350076 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[WebAssembly] Fix typos in comments in RegStackify (NFC)
Heejin Ahn [Wed, 26 Dec 2018 22:27:46 +0000 (22:27 +0000)]
[WebAssembly] Fix typos in comments in RegStackify (NFC)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350075 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LoopIdiomRecognize] Add CTTZ support
Craig Topper [Wed, 26 Dec 2018 21:59:48 +0000 (21:59 +0000)]
[LoopIdiomRecognize] Add CTTZ support

Summary:
Existing LIR recognizes CTLZ where shifting input variable right until it is zero. (Shift-Until-Zero idiom)

This commit:
1. Augments Shift-Until-Zero idiom to recognize CTTZ where input variable is shifted left.
2. Prepare for BitScan idiom recognition.

Patch by Yuanfang Chen (tabloid.adroit)

Reviewers: craig.topper, evstupac

Reviewed By: craig.topper

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D55876

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350074 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[codeview] Check if this 'this' type of a method is a pointer
Reid Kleckner [Wed, 26 Dec 2018 21:52:17 +0000 (21:52 +0000)]
[codeview] Check if this 'this' type of a method is a pointer

Fixes crash reported after r347354 for frontends that don't always emit
'this' pointers for methods. Now we will silently produce debug info
that makes functions like this look like static methods, which seems
reasonable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350073 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NVPTX] Allow libcalls that are defined in the current module.
Justin Lebar [Wed, 26 Dec 2018 19:12:31 +0000 (19:12 +0000)]
[NVPTX] Allow libcalls that are defined in the current module.

The patch adds a possibility to make library calls on NVPTX.

An important thing about library functions - they must be defined within
the current module. This basically should guarantee that we produce a
valid PTX assembly (without calls to not defined functions). The one who
wants to use the libcalls is probably will have to link against
compiler-rt or any other implementation.

Currently, it's completely impossible to make library calls because of
error LLVM ERROR: Cannot select: i32 = ExternalSymbol '...'. But we can
lower ExternalSymbol to TargetExternalSymbol and verify if the function
definition is available.

Also, there was an issue with a DAG during legalisation. When we expand
instruction into libcall, the inner call-chain isn't being "integrated"
into outer chain. Since the last "data-flow" (call retval load) node is
located in call-chain earlier than CALLSEQ_END node, the latter becomes
a leaf and therefore a dead node (and is being removed quite fast).
Proposed here solution relies on another data-flow pseudo nodes
(ProxyReg) which purpose is only to keep CALLSEQ_END at legalisation and
instruction selection phases - we remove the pseudo instructions before
register scheduling phase.

Patch by Denys Zariaiev!

Differential Revision: https://reviews.llvm.org/D34708

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350069 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[AMDGPU] Regenerate i64 shift tests.
Simon Pilgrim [Wed, 26 Dec 2018 12:09:10 +0000 (12:09 +0000)]
[AMDGPU] Regenerate i64 shift tests.

To show codegen diff due to a future SimplifyDemandedBits patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350065 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Use utility function for guards detection
Max Kazantsev [Wed, 26 Dec 2018 08:22:25 +0000 (08:22 +0000)]
[NFC] Use utility function for guards detection

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350064 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[MIPS GlobalISel] Select G_SELECT
Petar Avramovic [Tue, 25 Dec 2018 14:42:30 +0000 (14:42 +0000)]
[MIPS GlobalISel] Select G_SELECT

Add widen scalar for type index 1 (i1 condition) for G_SELECT.
Select G_SELECT for pointer, s32(integer) and smaller low level
types on MIPS32.

Differential Revision: https://reviews.llvm.org/D56001

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350063 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[NFC] Reuse variables instead of re-calling getParent
Max Kazantsev [Tue, 25 Dec 2018 07:20:06 +0000 (07:20 +0000)]
[NFC] Reuse variables instead of re-calling getParent

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350062 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[PowerPC] Fix the bug of ISD::ADDE to set its second return type to glue
Kang Zhang [Tue, 25 Dec 2018 03:29:51 +0000 (03:29 +0000)]
[PowerPC] Fix the bug of ISD::ADDE to set its second return type to glue

Summary:
This patch is to fix the bug imported by rL341634.
In above submit , the the return type of ISD::ADDE is
14224: SDVTList VTs = DAG.getVTList(MVT::i64, MVT::i64),
but in fact, the second return type of ISD::ADDE should be
MVT::Glue not MVT::i64.

Reviewed By: hfinkel

Differential Revision: https://reviews.llvm.org/D55977

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350061 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Make NOSORT line actually work
Nico Weber [Mon, 24 Dec 2018 23:06:29 +0000 (23:06 +0000)]
[gn build] Make NOSORT line actually work

GN wants the NOSORT line to be the first line of a comment block, not the last
line.

I sent https://gn-review.googlesource.com/c/gn/+/3560 to support having it in
the last line too, but since it will be a while until everyone has that change
even if it's expected, use the form that works today.

Differential Revision: https://reviews.llvm.org/D56065

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350060 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Use GetDemandedBits to simplify the operands of PMULDQ/PMULUDQ.
Craig Topper [Mon, 24 Dec 2018 19:40:20 +0000 (19:40 +0000)]
[X86] Use GetDemandedBits to simplify the operands of PMULDQ/PMULUDQ.

This is an alternative to what I attempted in D56057.

GetDemandedBits is a special version of SimplifyDemandedBits that allows simplifications even when the operand has other uses. GetDemandedBits will only do simplifications that allow a node to be bypassed. It won't create new nodes or alter any of the other users.

I had to add support for bypassing SIGN_EXTEND_INREG to GetDemandedBits.

Based on a patch that Simon Pilgrim sent me in email.

Fixes PR40142.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350059 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[X86] Add test cases for PR40142. NFC
Craig Topper [Mon, 24 Dec 2018 19:40:17 +0000 (19:40 +0000)]
[X86] Add test cases for PR40142. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350058 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[HWASAN] Instrument memorty intrinsics by default
Eugene Leviant [Mon, 24 Dec 2018 16:02:48 +0000 (16:02 +0000)]
[HWASAN] Instrument memorty intrinsics by default

Differential revision: https://reviews.llvm.org/D55926

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350055 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[gn build] Add build files for clang/tools/{c-arcmt-test,c-index-test} and their...
Nico Weber [Mon, 24 Dec 2018 15:45:04 +0000 (15:45 +0000)]
[gn build] Add build files for clang/tools/{c-arcmt-test,c-index-test} and their dependency clang/tools/libclang

libclang is somewhat incomplete. It's just enough to get check-clang to pass,
but that requires it to be pretty complete. The biggest thing is that it's not
built as a shared library on Linux. The libclang/BUILD.gn file has a comment
with details on what else is missing.

Differential Revision: https://reviews.llvm.org/D56059

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350054 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoReleaseNotes: X86 Target: bdver2 sched model was added (D52779)
Roman Lebedev [Mon, 24 Dec 2018 12:12:26 +0000 (12:12 +0000)]
ReleaseNotes: X86 Target: bdver2 sched model was added (D52779)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350053 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoRevert rL350048 and rL350050
Max Kazantsev [Mon, 24 Dec 2018 10:30:04 +0000 (10:30 +0000)]
Revert rL350048 and rL350050

These patches have broken almost all buildbots on test
DebugInfo/X86/addr_comments.ll. Reverting to green.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350052 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoFix build - follow-up to r350048 which broke headerless (v4) address pool
David Blaikie [Mon, 24 Dec 2018 07:56:40 +0000 (07:56 +0000)]
Fix build - follow-up to r350048 which broke headerless (v4) address pool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350050 91177308-0d34-0410-b5e6-96231b3b80d8

5 years ago[LoopSimplifyCFG] Delete dead exiting edges
Max Kazantsev [Mon, 24 Dec 2018 07:41:33 +0000 (07:41 +0000)]
[LoopSimplifyCFG] Delete dead exiting edges

This patch teaches LoopSimplifyCFG to remove dead exiting edges
from loops.

Differential Revision: https://reviews.llvm.org/D54025
Reviewed By: fedor.sergeev

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350049 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoDebugInfo: Use assembly label arithmetic for address pool size for easier reading...
David Blaikie [Mon, 24 Dec 2018 07:35:10 +0000 (07:35 +0000)]
DebugInfo: Use assembly label arithmetic for address pool size for easier reading/editing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350048 91177308-0d34-0410-b5e6-96231b3b80d8

5 years agoDebugInfo: Add assembly comments for debug_addr contribution header fields
David Blaikie [Mon, 24 Dec 2018 07:09:50 +0000 (07:09 +0000)]
DebugInfo: Add assembly comments for debug_addr contribution header fields

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350047 91177308-0d34-0410-b5e6-96231b3b80d8