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7 years ago[AArch64] Remove dotprod from base extension list
Sjoerd Meijer [Fri, 11 Aug 2017 13:12:49 +0000 (13:12 +0000)]
[AArch64] Remove dotprod from base extension list

Dot product is an optional ARMv8.2a extension; remove it from the ARMv8.2a base
extension list. This was introduced in commit r310480.

Differential Revision: https://reviews.llvm.org/D36609

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310708 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] Assembler support for the ARMv8.2a dot product instructions
Sjoerd Meijer [Fri, 11 Aug 2017 09:52:30 +0000 (09:52 +0000)]
[ARM] Assembler support for the ARMv8.2a dot product instructions

Commit r310480 added the AArch64 ARMv8.2a dot product instructions;
this adds the AArch32 instructions.

Differential Revision: https://reviews.llvm.org/D36575

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310701 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAGCombiner] Remove shuffle support from simplifyShuffleMask
Simon Pilgrim [Fri, 11 Aug 2017 08:37:00 +0000 (08:37 +0000)]
[DAGCombiner] Remove shuffle support from simplifyShuffleMask

rL310372 enabled simplifyShuffleMask to support undef shuffle mask inputs, but its causing hangs.

Removing support until I can triage the problem

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310699 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[IfConversion] Maintain the CFG when predicating/merging blocks in IfConvert*
Mikael Holmen [Fri, 11 Aug 2017 06:57:08 +0000 (06:57 +0000)]
[IfConversion] Maintain the CFG when predicating/merging blocks in IfConvert*

Summary:
This fixes PR32721 in IfConvertTriangle and possible similar problems in
IfConvertSimple, IfConvertDiamond and IfConvertForkedDiamond.

In PR32721 we had a triangle

   EBB
   | \
   |  |
   | TBB
   |  /
   FBB

where FBB didn't have any successors at all since it ended with an
unconditional return. Then TBB and FBB were be merged into EBB, but EBB
would still keep its successors, and the use of analyzeBranch and
CorrectExtraCFGEdges wouldn't help to remove them since the return
instruction is not analyzable (at least not on ARM).

The edge updating code and branch probability updating code is now pushed
into MergeBlocks() which allows us to share the same update logic between
more callsites. This lets us remove several dependencies on analyzeBranch
and completely eliminate RemoveExtraEdges.

One thing that showed up with this patch was that IfConversion sometimes
left a successor with 0% probability even if there was no branch or
fallthrough to the successor.

One such example from the test case ifcvt_bad_zero_prob_succ.mir. The
indirect branch tBRIND can only jump to bb.1, but without the patch we
got:

  bb.0:
    successors: %bb.1(0x80000000)

  bb.1:
    successors: %bb.1(0x80000000), %bb.2(0x00000000)
    tBRIND %r1, 1, %cpsr
    B %bb.1

  bb.2:

There is no way to jump from bb.1 to bb2, but still there is a 0% edge
from bb.1 to bb.2.

With the patch applied we instead get the expected:

  bb.0:
    successors: %bb.1(0x80000000)

  bb.1:
    successors: %bb.1(0x80000000)
    tBRIND %r1, 1, %cpsr
    B %bb.1

Since bb.2 had no predecessor at all, it was removed.

Several testcases had to be updated due to this since the removed
successor made the "Branch Probability Basic Block Placement" pass
sometimes place blocks in a different order.

Finally added a couple of new test cases:

* PR32721_ifcvt_triangle_unanalyzable.mir:
  Regression test for the original problem dexcribed in PR 32721.

* ifcvt_triangleWoCvtToNextEdge.mir:
  Regression test for problem that caused a revert of my first attempt
  to solve PR 32721.

* ifcvt_simple_bad_zero_prob_succ.mir:
  Test case showing the problem where a wrong successor with 0% probability
  was previously left.

* ifcvt_[diamond|forked_diamond|simple]_unanalyzable.mir
  Very simple test cases for the simple and (forked) diamond cases
  involving unanalyzable branches that can be nice to have as a base if
  wanting to write more complicated tests.

Reviewers: iteratee, MatzeB, grosser, kparzysz

Reviewed By: kparzysz

Subscribers: kbarton, davide, aemerson, nemanjai, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D34099

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310697 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PM] Switch the CGSCC debug messages to use the standard LLVM debug
Chandler Carruth [Fri, 11 Aug 2017 05:47:13 +0000 (05:47 +0000)]
[PM] Switch the CGSCC debug messages to use the standard LLVM debug
printing techniques with a DEBUG_TYPE controlling them.

It was a mistake to start re-purposing the pass manager `DebugLogging`
variable for generic debug printing -- those logs are intended to be
very minimal and primarily used for testing. More detailed and
comprehensive logging doesn't make sense there (it would only make for
brittle tests).

Moreover, we kept forgetting to propagate the `DebugLogging` variable to
various places making it also ineffective and/or unavailable. Switching
to `DEBUG_TYPE` makes this a non-issue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310695 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[MachineOutliner] Add RegState::Define to LDRXpost in insertOutlinedCall
Jessica Paquette [Thu, 10 Aug 2017 23:11:24 +0000 (23:11 +0000)]
[MachineOutliner] Add RegState::Define to LDRXpost in insertOutlinedCall

This fixes a MachineVerifier failure in machine-outliner.mir. Not explicitly
adding RegState::Define to the LR argument makes it unhappy because an explicit
definition is marked as a use.

Build failure:
http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-expensive/7496/testReport/junit/LLVM/CodeGen_AArch64/machine_outliner_mir/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310671 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "[AsmParser] Hash is not a comment on some targets"
Ahmed Bougacha [Thu, 10 Aug 2017 21:23:00 +0000 (21:23 +0000)]
Revert "[AsmParser] Hash is not a comment on some targets"

This reverts commit r310457.

It causes clang-produced IR to fail llvm codegen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310662 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoDisable some IR death tests when SEH is available
Reid Kleckner [Thu, 10 Aug 2017 21:14:07 +0000 (21:14 +0000)]
Disable some IR death tests when SEH is available

They hang for me locally. I suspect that there is a use-after-free when
attempting to destroy an LLVMContext after asserting from the middle of
metadata tracking. It doesn't seem worth debugging it further.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310660 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "[DAG] Cleanup unused nodes after store merge. NFCI."
Nirav Dave [Thu, 10 Aug 2017 21:03:36 +0000 (21:03 +0000)]
Revert "[DAG] Cleanup unused nodes after store merge. NFCI."

This reverts commit r310648 which causes an unexpected assertion failure

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310659 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] Make (X|C1)^C2 -> X^(C1^C2) iff X&~C1 == 0 work for splat vectors
Craig Topper [Thu, 10 Aug 2017 20:35:34 +0000 (20:35 +0000)]
[InstCombine] Make (X|C1)^C2 -> X^(C1^C2) iff X&~C1 == 0 work for splat vectors

This also corrects the description to match what was actually implemented. The old comment said X^(C1|C2), but it implemented X^((C1|C2)&~(C1&C2)). I believe ((C1|C2)&~(C1&C2)) is equivalent to (C1^C2).

Differential Revision: https://reviews.llvm.org/D36505

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310658 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAG] Relax type restriction for store merge
Nirav Dave [Thu, 10 Aug 2017 19:52:45 +0000 (19:52 +0000)]
[DAG]  Relax type restriction for store merge

Summary: Allow stores of bitcastable types to be merged by peeking through BITCAST nodes and recasting stored values constant and vector extract nodes as necessary.

Reviewers: jyknight, hfinkel, efriedma, RKSimon, spatel

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D34569

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310655 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Add SSE2 two-src shuffle costs
Simon Pilgrim [Thu, 10 Aug 2017 19:32:35 +0000 (19:32 +0000)]
[CostModel][X86] Add SSE2 two-src shuffle costs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310654 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] Clarify legal addressing modes for ARM and Thumb2. NFC
Eli Friedman [Thu, 10 Aug 2017 19:31:27 +0000 (19:31 +0000)]
[ARM] Clarify legal addressing modes for ARM and Thumb2. NFC

The existing code is very clever, but not clear, which seems
like the wrong tradeoff here.

Differential Revision: https://reviews.llvm.org/D36559

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310653 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[gold-plugin] Use more StringRef. No functionality change intended.
Benjamin Kramer [Thu, 10 Aug 2017 19:28:00 +0000 (19:28 +0000)]
[gold-plugin] Use more StringRef. No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310652 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Add avx1 two-src shuffle costs
Simon Pilgrim [Thu, 10 Aug 2017 19:02:51 +0000 (19:02 +0000)]
[CostModel][X86] Add avx1 two-src shuffle costs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310650 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAG] Cleanup unused nodes after store merge. NFCI.
Nirav Dave [Thu, 10 Aug 2017 18:53:14 +0000 (18:53 +0000)]
[DAG] Cleanup unused nodes after store merge. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310648 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Add avx2 two-src shuffle costs
Simon Pilgrim [Thu, 10 Aug 2017 18:29:34 +0000 (18:29 +0000)]
[CostModel][X86] Add avx2 two-src shuffle costs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310645 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoMake .file directive to have basename only
Taewook Oh [Thu, 10 Aug 2017 18:17:11 +0000 (18:17 +0000)]
Make .file directive to have basename only

Summary:
Currently LLVM puts directory along with the filename in .file directive, but this behavior doesn't match gcc. There's a no clear description about which one is right (https://sourceware.org/binutils/docs/as/File.html#File), but one document (https://sourceware.org/gdb/current/onlinedocs/stabs/ELF-Linker-Relocation.html) suggests that STT_FILE symbol in elf file is expected to have basename only, which should have a same sting file .file directive according to (https://docs.oracle.com/cd/E26502_01/html/E28388/eoiyg.html).

This also affects badly on the build system that uses hashing, as the directory info could be differnt from developer to developer even when they're working on same file.

Reviewers: pcc, mehdi_amini

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36018

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310642 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Extend two src shuffle cost tests
Simon Pilgrim [Thu, 10 Aug 2017 18:02:45 +0000 (18:02 +0000)]
[CostModel][X86] Extend two src shuffle cost tests

Cover most 128/256/512/1024-bit cases for vXf64/vXi64, vXf32/vXi32, vXi16 + vXi8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310641 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] Fix a crash in getSelectCondition if we happen to have two inverse...
Craig Topper [Thu, 10 Aug 2017 17:48:14 +0000 (17:48 +0000)]
[InstCombine] Fix a crash in getSelectCondition if we happen to have two inverse vectors of i1 constants.

We used to try to truncate the constant vector to vXi1, but if it's already i1 this would fail. Instead we now use IRBuilder::getZExtOrTrunc which should check the type and only create a trunc if needed. I believe this should trigger constant folding in the IRBuilder and ultimately do the same thing just with the additional type check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310639 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] Add a DEBUG_COUNTER to InstCombine to limit how many instructions are...
Craig Topper [Thu, 10 Aug 2017 17:48:12 +0000 (17:48 +0000)]
[InstCombine] Add a DEBUG_COUNTER to InstCombine to limit how many instructions are visited for debug

Sometimes it would be nice to stop InstCombine mid way through its combining to see the current IR. By using a debug counter we can place an upper limit on how many instructions to process.

This will also allow skipping the first X combines, but that has the potential to change later combines since earlier canonicalizations might have been skipped.

Differential Revision: https://reviews.llvm.org/D36553

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310638 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DebugCounter] Move the semicolon out of the DEBUG_COUNTER macro and require it to...
Craig Topper [Thu, 10 Aug 2017 17:48:11 +0000 (17:48 +0000)]
[DebugCounter] Move the semicolon out of the DEBUG_COUNTER macro and require it to be placed at the end of each use.

This make it consistent with STATISTIC which it will often appears near.

While there move one DEBUG_COUNTER instance out of an anonymous namespace. It's already declaring a static variable so the namespace is unnecessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310637 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[gold-plugin] Avoid race condition when creating temporary files.
Benjamin Kramer [Thu, 10 Aug 2017 17:38:41 +0000 (17:38 +0000)]
[gold-plugin] Avoid race condition when creating temporary files.

This is both a potential security issue and a potential functionality
issue because we create temporary files from multiple threads. Use
the safe version of createTemporaryFile instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310636 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Add avx512vbmi broadcast/reverse/single-src shuffle cost tests
Simon Pilgrim [Thu, 10 Aug 2017 17:33:25 +0000 (17:33 +0000)]
[CostModel][X86] Add avx512vbmi broadcast/reverse/single-src shuffle cost tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310633 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Improve single src shuffle costs
Simon Pilgrim [Thu, 10 Aug 2017 17:27:20 +0000 (17:27 +0000)]
[CostModel][X86] Improve single src shuffle costs

Add missing SK_PermuteSingleSrc costs for AVX2 targets and earlier, also added some of the simpler SK_PermuteTwoSrc costs to support splitting of SK_PermuteSingleSrc shuffles

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310632 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix 'not all control paths return' warning on windows builds. NFCI.
Simon Pilgrim [Thu, 10 Aug 2017 17:20:09 +0000 (17:20 +0000)]
Fix 'not all control paths return' warning on windows builds. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310631 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFixup for r310621: Hint the compilers about unreachable code.
Marek Sokolowski [Thu, 10 Aug 2017 16:46:52 +0000 (16:46 +0000)]
Fixup for r310621: Hint the compilers about unreachable code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310623 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd .rc scripts tokenizer.
Marek Sokolowski [Thu, 10 Aug 2017 16:21:44 +0000 (16:21 +0000)]
Add .rc scripts tokenizer.

This extends the shell of llvm-rc tool with the ability of tokenization
of the input files. Currently, ASCII and ASCII-compatible UTF-8 files
are supported.

Thanks to Nico Weber (thakis) for his original work in this area.

Differential Revision: https://reviews.llvm.org/D35957

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310621 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd "Restored" flag to CalleeSavedInfo
Krzysztof Parzyszek [Thu, 10 Aug 2017 16:17:32 +0000 (16:17 +0000)]
Add "Restored" flag to CalleeSavedInfo

The liveness-tracking code assumes that the registers that were saved
in the function's prolog are live outside of the function. Specifically,
that registers that were saved are also live-on-exit from the function.
This isn't always the case as illustrated by the LR register on ARM.

Differential Revision: https://reviews.llvm.org/D36160

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310619 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] add memcpy expansion tests with potential DL dependency; NFC
Sanjay Patel [Thu, 10 Aug 2017 15:37:26 +0000 (15:37 +0000)]
[InstCombine] add memcpy expansion tests with potential DL dependency; NFC

Current behavior is to transform these independently of the datalayout.

There's a proposal to change this in D35035:
https://reviews.llvm.org/D35035

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310611 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[unittests] Adding a unittest for ChangeTaTargetIndex. NFC
Marcello Maggioni [Thu, 10 Aug 2017 15:35:25 +0000 (15:35 +0000)]
[unittests] Adding a unittest for ChangeTaTargetIndex. NFC

Differential Revision: https://reviews.llvm.org/D36565

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310610 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAG] Rewrite expression. NFC.
Nirav Dave [Thu, 10 Aug 2017 15:29:33 +0000 (15:29 +0000)]
[DAG] Rewrite expression. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310608 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CostModel][X86] Added v2f64/v2i64 single src shuffle model tests
Simon Pilgrim [Thu, 10 Aug 2017 15:25:08 +0000 (15:25 +0000)]
[CostModel][X86] Added v2f64/v2i64 single src shuffle model tests

Fixed label checks for all prefixes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310606 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Keep dependencies when constructing loads in combineStore
Nirav Dave [Thu, 10 Aug 2017 15:12:32 +0000 (15:12 +0000)]
[X86] Keep dependencies when constructing loads in combineStore

Summary:
Preserve chain dependecies between old and new loads constructed to
prevent loads from reordering below later stores.

Fixes PR34088.

Reviewers: craig.topper, spatel, RKSimon, efriedma

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36528

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310604 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] regenerate test checks; NFC
Sanjay Patel [Thu, 10 Aug 2017 15:07:37 +0000 (15:07 +0000)]
[InstCombine] regenerate test checks; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310603 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Hexagon] Use isMetaInstruction instead of isDebugValue
Krzysztof Parzyszek [Thu, 10 Aug 2017 15:00:30 +0000 (15:00 +0000)]
[Hexagon] Use isMetaInstruction instead of isDebugValue

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310601 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[sanitizer-coverage] Change cmp instrumentation to distinguish const operands
Alexander Potapenko [Thu, 10 Aug 2017 15:00:13 +0000 (15:00 +0000)]
[sanitizer-coverage] Change cmp instrumentation to distinguish const operands

This implementation of SanitizerCoverage instrumentation inserts different
callbacks depending on constantness of operands:

  1. If both operands are non-const, then a usual
     __sanitizer_cov_trace_cmp[1248] call is inserted.
  2. If exactly one operand is const, then a
     __sanitizer_cov_trace_const_cmp[1248] call is inserted. The first
     argument of the call is always the constant one.
  3. If both operands are const, then no callback is inserted.

This separation comes useful in fuzzing when tasks like "find one operand
of the comparison in input arguments and replace it with the other one"
have to be done. The new instrumentation allows us to not waste time on
searching the constant operands in the input.

Patch by Victor Chibotaru.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310600 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] regenerate test checks, add comments; NFC
Sanjay Patel [Thu, 10 Aug 2017 14:51:42 +0000 (14:51 +0000)]
[InstCombine] regenerate test checks, add comments; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310598 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[NewGVN] Add CL option to control the generation of phi-of-ops (disable by default).
Chad Rosier [Thu, 10 Aug 2017 14:12:57 +0000 (14:12 +0000)]
[NewGVN] Add CL option to control the generation of phi-of-ops (disable by default).

Differential Revision: https://reviews.llvm.org/D36478539

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310594 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SelectionDAG] Allow constant folding for implicitly truncating BUILD_VECTOR nodes.
Guy Blank [Thu, 10 Aug 2017 14:09:50 +0000 (14:09 +0000)]
[SelectionDAG] Allow constant folding for implicitly truncating BUILD_VECTOR nodes.

In FoldConstantArithmetic, handle BUILD_VECTOR nodes that do implicit truncation on the elements.

This is similar to what is done in FoldConstantVectorArithmetic.

Differential Revision:
https://reviews.llvm.org/D36506

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310593 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[libFuzzer] Update LibFuzzer w.r.t. the new comparisons instrumentation API
Alexander Potapenko [Thu, 10 Aug 2017 14:01:45 +0000 (14:01 +0000)]
[libFuzzer] Update LibFuzzer w.r.t. the new comparisons instrumentation API

Added the _sanitizer_cov_trace_const_cmp[1248] callbacks.
For now they are implemented the same way as _sanitizer_cov_trace_cmp[1248].
For more details, please see https://reviews.llvm.org/D36465.

Patch by Victor Chibotaru.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310592 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CMake][LLVM] Remove duplicated library mask. Broken clang linking against clangShared
Oleg Ranevskyy [Thu, 10 Aug 2017 13:37:58 +0000 (13:37 +0000)]
[CMake][LLVM] Remove duplicated library mask. Broken clang linking against clangShared

Summary:
The `LLVM${c}Info` mask is listed twice in LLVM-Config.cmake. This results in the libraries such as LLVMARMInfo, LLVMAArch4Info, etc appearing twice in `extract_symbols.py` command line while building `clangShared`. `Extract_symbols.py` does not work well in such a case and completely ignores the symbols from the duplicated libraries. Thus, the LLVM(...)Info symbols do not get exported from `clangShared` and linking clang against it fails with unresolved dependencies.

Seems to be a mere copy-paste mistake.

Reviewers: beanz, chapuni

Reviewed By: chapuni

Subscribers: chapuni, aemerson, mgorny, kristof.beyls, llvm-commits, asl

Differential Revision: https://reviews.llvm.org/D36119

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310590 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ValueTracking] Enabling ValueTracking patch by default (recommit). Part 2.
Nikolai Bozhenov [Thu, 10 Aug 2017 11:24:57 +0000 (11:24 +0000)]
[ValueTracking] Enabling ValueTracking patch by default (recommit). Part 2.

The original patch was an improvement to IR ValueTracking on non-negative
integers. It has been checked in to trunk (D18777, r284022). But was disabled by
default due to performance regressions.
Perf impact has improved. The patch would be enabled by default.

Reviewers: reames, hfinkel

Differential Revision: https://reviews.llvm.org/D34101

Patch by: Olga Chupina <olga.chupina@intel.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310583 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[mips][microMIPS] Extending size reduction pass with XOR16
Zoran Jovanovic [Thu, 10 Aug 2017 10:27:29 +0000 (10:27 +0000)]
[mips][microMIPS] Extending size reduction pass with XOR16
Author: milena.vujosevic.janicic
Reviewers: sdardis
The patch extends size reduction pass for MicroMIPS.
XOR instruction is transformed into 16-bit instruction XOR16, if possible.
Differential Revision: https://reviews.llvm.org/D34239

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310579 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AArch64] Assembler support for v8.3 RCpc
Sam Parker [Thu, 10 Aug 2017 09:52:55 +0000 (09:52 +0000)]
[AArch64] Assembler support for v8.3 RCpc

Added assembler and disassembler support for the new Release
Consistent processor consistent instructions, introduced with ARM
v8.3-A for AArch64.

Differential Revision: https://reviews.llvm.org/D36522

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310575 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM][AArch64] ARMv8.3-A enablement
Sam Parker [Thu, 10 Aug 2017 09:41:00 +0000 (09:41 +0000)]
[ARM][AArch64] ARMv8.3-A enablement

The beta ARMv8.3 ISA specifications have been released for AArch64
and AArch32, these can be found at:
https://developer.arm.com/products/architecture/a-profile/exploration-tools

An introduction to this architecture update can be found at:
https://community.arm.com/processors/b/blog/posts/armv8-a-architecture-2016-additions

This patch is the first in a series which will add ARM v8.3-A support
in LLVM and Clang. It adds the necessary changes that create targets
for both the ARM and AArch64 backends.

Differential Revision: https://reviews.llvm.org/D36514

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310561 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SelectionDAG] When scalarizing vselect, don't assert on
Elad Cohen [Thu, 10 Aug 2017 07:44:23 +0000 (07:44 +0000)]
[SelectionDAG] When scalarizing vselect, don't assert on
a legal cond operand.

When scalarizing the result of a vselect, the legalizer currently expects
to already have scalarized the operands. While this is true for the true/false
operands (which have the same type as the result), it is not case for the
condition operand. On X86 AVX512, v1i1 is legal - this leads to operations such
as '< N x type> vselect < N x i1> < N x type> < N x type>' where < N x type > is
illegal to hit an assertion during the scalarization.

The handling is similar to r205625.
This also exposes the fact that (v1i1 extract_subvector) should be legal
and selectable on AVX512 - We do this by custom lowering to vector_extract_elt.
This still leaves us in some cases with redundant dag nodes which will be
combined in a separate soon to come patch.

This fixes pr33349.

Differential revision: https://reviews.llvm.org/D36511

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310552 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert part of r310296 to make it really NFC for instrumentation PGO.
Dehao Chen [Thu, 10 Aug 2017 05:10:32 +0000 (05:10 +0000)]
Revert part of r310296 to make it really NFC for instrumentation PGO.

Summary: Part of r310296 will disable PGOIndirectCallPromotion in ThinLTO backend if PGOOpt is None. However, as PGOOpt is not passed down to ThinLTO backend for instrumentation based PGO, that change would actually disable ICP entirely in ThinLTO backend, making it behave differently in instrumentation PGO mode. This change reverts that change, and only disable ICP there when it is SamplePGO.

Reviewers: davidxl

Reviewed By: davidxl

Subscribers: sanjoy, mehdi_amini, eraman, llvm-commits

Differential Revision: https://reviews.llvm.org/D36566

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310550 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LCG] Fix an assert in a on-scope-exit lambda that checked the contents
Chandler Carruth [Thu, 10 Aug 2017 03:05:21 +0000 (03:05 +0000)]
[LCG] Fix an assert in a on-scope-exit lambda that checked the contents
of the returned value.

Checking the returned value from inside of a scoped exit isn't actually
valid. It happens to work when NRVO fires and the stars align, which
they reliably do with Clang but don't, for example, on MSVC builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310547 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LVI] Fix LVI compile time regression around constantFoldUser()
Hiroshi Yamauchi [Thu, 10 Aug 2017 02:23:14 +0000 (02:23 +0000)]
[LVI] Fix LVI compile time regression around constantFoldUser()

Summary:
Avoid checking each operand and calling getValueFromCondition() before calling
constantFoldUser() when the instruction type isn't supported by
constantFoldUser().

This fixes a large compile time regression in an internal build.

Reviewers: sanjoy

Reviewed By: sanjoy

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D36552

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310545 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoLinker: Create a function declaration when moving a non-prevailing alias of function...
Peter Collingbourne [Thu, 10 Aug 2017 01:07:44 +0000 (01:07 +0000)]
Linker: Create a function declaration when moving a non-prevailing alias of function type.

We were previously creating a global variable of function type,
which is invalid IR. This issue was exposed by r304690, in which we
started asserting that global variables were of a valid type.

Fixes PR33462.

Differential Revision: https://reviews.llvm.org/D36438

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310543 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstSimplify] Add test cases that show that simplifySelectWithICmpCond doesn't work...
Craig Topper [Thu, 10 Aug 2017 01:02:02 +0000 (01:02 +0000)]
[InstSimplify] Add test cases that show that simplifySelectWithICmpCond doesn't work with non-canonical comparisons.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310542 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AMDGPU] Fix some Clang-tidy modernize-use-using and Include What You Use warnings...
Eugene Zelenko [Thu, 10 Aug 2017 00:46:15 +0000 (00:46 +0000)]
[AMDGPU] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310541 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix thinlto cache key computation for cfi-icall.
Evgeniy Stepanov [Wed, 9 Aug 2017 23:24:07 +0000 (23:24 +0000)]
Fix thinlto cache key computation for cfi-icall.

Summary:
Fixed PR33966.

CFI code generation for users (not just callers) of a function depends
on whether this function has a jumptable entry or not. This
information needs to be encoded in of thinlto cache key.

We filter the jumptable list against functions that are actually
referenced in the current module.

Subscribers: mehdi_amini, inglorion, eraman, hiraditya

Differential Revision: https://reviews.llvm.org/D36346

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310536 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoARM: Fix CMP_SWAP expansion
Matthias Braun [Wed, 9 Aug 2017 22:22:05 +0000 (22:22 +0000)]
ARM: Fix CMP_SWAP expansion

Clean up after my misguided attempt in r304267 to "fix" CMP_SWAP
returning an uninitialized status value.

- I was always using tMOVi8 to zero the status register which cannot
  encode higher register numbers and llvm would silently miscompile)

- Nobody was ever looking at that status value outside the expansion.
  ARMDAGToDAGISel::SelectCMP_SWAP() the only place creating CMP_SWAP
  instructions was not mapping anything to it. (The cmpxchg status value
  from llvm IR is lowered to a manual comparison after the CMP_SWAP)

So this:
- Renames the register from "status" to "temp" it make it obvious that
  it isn't used outside the expansion.
- Remove the zeroing status/temp register.
- Keep the live-in list improvements from r304267

Fixes http://llvm.org/PR34056

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310534 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoLangRef: Fix/improve cmpxchg wording
Matthias Braun [Wed, 9 Aug 2017 22:22:04 +0000 (22:22 +0000)]
LangRef: Fix/improve cmpxchg wording

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310533 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Path] Sink predicate computations to their uses. NFCI.
Benjamin Kramer [Wed, 9 Aug 2017 22:06:32 +0000 (22:06 +0000)]
[Path] Sink predicate computations to their uses. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310531 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86][Asm] Allow negative immediate to appear before bracketed expression
Coby Tayree [Wed, 9 Aug 2017 21:49:17 +0000 (21:49 +0000)]
[X86][Asm] Allow negative immediate to appear before bracketed expression

Currently, only non-negative immediate is allowed prior to a brac expression (memory reference).
MASM / GAS does not have any problem cope with the left side of the real line, so we should be able to as well.

Differntial Revision: https://reviews.llvm.org/D36229

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310528 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Hexagon] Ignore DBG_VALUEs when counting instructions in hexagon-early-if
Krzysztof Parzyszek [Wed, 9 Aug 2017 21:22:05 +0000 (21:22 +0000)]
[Hexagon] Ignore DBG_VALUEs when counting instructions in hexagon-early-if

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310524 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Linker] PR33527 - Linker::LinkOnlyNeeded should import AppendingLinkage globals
Benoit Belley [Wed, 9 Aug 2017 20:58:39 +0000 (20:58 +0000)]
[Linker] PR33527 - Linker::LinkOnlyNeeded should import AppendingLinkage globals

Linker::LinkOnlyNeeded should always import globals with
AppendingLinkage.

This resolves PR33527.

Differential Revision: https://reviews.llvm.org/D34448

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310522 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Docs] Remove a stray period from a code example in the Programmer's Manual.
Craig Topper [Wed, 9 Aug 2017 20:55:33 +0000 (20:55 +0000)]
[Docs] Remove a stray period from a code example in the Programmer's Manual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310520 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[llvm-cov] Rearrange entries in report index.
Eli Friedman [Wed, 9 Aug 2017 20:43:31 +0000 (20:43 +0000)]
[llvm-cov] Rearrange entries in report index.

Files which don't contain any functions are likely useless; don't
include them in the main table. Put the links at the bottom of the
page, in case someone wants to figure out coverage for code inside
a macro.

Not sure if this is the best solution, but it seems like an
improvement.

Differential Revision: https://reviews.llvm.org/D36298

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310518 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[RuntimeDyld][ORC] Add support for Thumb mode to RuntimeDyldMachOARM.
Lang Hames [Wed, 9 Aug 2017 20:19:27 +0000 (20:19 +0000)]
[RuntimeDyld][ORC] Add support for Thumb mode to RuntimeDyldMachOARM.

This patch adds support for thumb relocations to RuntimeDyldMachOARM, and adds
a target-specific flags field to JITSymbolFlags (so that on ARM we can record
whether each symbol is Thumb-mode code).

RuntimeDyldImpl::emitSection is modified to ensure that stubs memory is
correctly aligned based on the size returned by getStubAlignment().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310517 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU: Fix assert on n inline asm constraint
Matt Arsenault [Wed, 9 Aug 2017 20:09:35 +0000 (20:09 +0000)]
AMDGPU: Fix assert on n inline asm constraint

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310515 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Hexagon] Tie implicit uses to defs in predicated instructions
Krzysztof Parzyszek [Wed, 9 Aug 2017 19:58:00 +0000 (19:58 +0000)]
[Hexagon] Tie implicit uses to defs in predicated instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310514 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SimplifyCFG] remove checks for crasher test from r310481
Sanjay Patel [Wed, 9 Aug 2017 18:56:26 +0000 (18:56 +0000)]
[SimplifyCFG] remove checks for crasher test from r310481

Not sure why the earlier version would fail, but trying to get the bots
(and my local machine) to pass again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310510 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] narrow rotate left/right patterns to eliminate zext/trunc (PR34046)
Sanjay Patel [Wed, 9 Aug 2017 18:37:41 +0000 (18:37 +0000)]
[InstCombine] narrow rotate left/right patterns to eliminate zext/trunc (PR34046)

I couldn't find any smaller folds to help the cases in:
https://bugs.llvm.org/show_bug.cgi?id=34046
after:
rL310141

The truncated rotate-by-variable patterns elude all of the existing transforms because
of multiple uses and knowledge about demanded bits and knownbits that doesn't exist
without the whole pattern. So we need an unfortunately large pattern match. But by
simplifying this pattern in IR, the backend is already able to generate
rolb/rolw/rorb/rorw for x86 using its existing rotate matching logic (although
there is a likely extraneous 'and' of the rotate amount).

Note that rotate-by-constant doesn't have this problem - smaller folds should already
produce the narrow IR ops.

Differential Revision: https://reviews.llvm.org/D36395

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310509 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoPointerLikeTypeTraits: class->struct & remove the base definition
David Blaikie [Wed, 9 Aug 2017 18:34:21 +0000 (18:34 +0000)]
PointerLikeTypeTraits: class->struct & remove the base definition

This simplifies implementations and removing the base definition paves
the way for detecting whether a type is 'pointer like'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310507 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoReduce variable scope by moving declaration into if clause
David Blaikie [Wed, 9 Aug 2017 18:34:18 +0000 (18:34 +0000)]
Reduce variable scope by moving declaration into if clause

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310506 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[asan] Fix instruction emission ordering with dynamic shadow.
Matt Morehouse [Wed, 9 Aug 2017 17:59:43 +0000 (17:59 +0000)]
[asan] Fix instruction emission ordering with dynamic shadow.

Summary:
Instrumentation to copy byval arguments is now correctly inserted
after the dynamic shadow base is loaded.

Reviewers: vitalybuka, eugenis

Reviewed By: vitalybuka

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D36533

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310503 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[COFF, ARM64] Add MS builtins __dmb, __dsb, __isb
Mandeep Singh Grang [Wed, 9 Aug 2017 17:58:39 +0000 (17:58 +0000)]
[COFF, ARM64] Add MS builtins __dmb, __dsb, __isb

Reviewers: mstorsjo, rnk, ruiu, compnerd, efriedma

Reviewed By: efriedma

Subscribers: efriedma, aemerson, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D36110

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310502 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86][AVX512] Choose correct registers in vpbroadcastb/w
Guy Blank [Wed, 9 Aug 2017 17:21:01 +0000 (17:21 +0000)]
[X86][AVX512] Choose correct registers in vpbroadcastb/w

Fixes the vpbroadcastb/w instructions which use GPRs as source operands, to use the correct registers.
The full GPR should be used, and not the subregister, as it happens before the patch.

Fixes pr33795

Differential Revision:
https://reviews.llvm.org/D36479

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310498 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AMDGPU][MC][GFX9] Added 16-bit renamed and "_legacy" VALU opcodes
Dmitry Preobrazhensky [Wed, 9 Aug 2017 17:10:47 +0000 (17:10 +0000)]
[AMDGPU][MC][GFX9] Added 16-bit renamed and "_legacy" VALU opcodes

See Bug 33629: https://bugs.llvm.org//show_bug.cgi?id=33629

Reviewers: vpykhtin, SamWot, arsenm

Differential Revision: https://reviews.llvm.org/D36322

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310497 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoCFLAA: return MustAlias when pointers p, q are equal, i.e.,
Nuno Lopes [Wed, 9 Aug 2017 17:02:18 +0000 (17:02 +0000)]
CFLAA: return MustAlias when pointers p, q are equal, i.e.,
must-alias(p, sz_p, p, sz_q)  irrespective of access sizes sz_p, sz_q

As discussed a couple of weeks ago on the ML.
This makes the behavior consistent with that of BasicAA.
AA clients already check the obj size themselves and may not require the
obj size to match exactly the access size (e.g., in case of store forwarding)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310495 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ValueTracking] Turn a test into an assertion.
Davide Italiano [Wed, 9 Aug 2017 16:06:54 +0000 (16:06 +0000)]
[ValueTracking] Turn a test into an assertion.

As discussed with Chad, this should never happen, but this
assertion is basically free, so, keep it around just in case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310493 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ValueTracking] Update tests to unbreak the bots.
Davide Italiano [Wed, 9 Aug 2017 16:06:04 +0000 (16:06 +0000)]
[ValueTracking] Update tests to unbreak the bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310492 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[x86] add more tests for select-of-constants; NFC
Sanjay Patel [Wed, 9 Aug 2017 15:57:02 +0000 (15:57 +0000)]
[x86] add more tests for select-of-constants; NFC

This is to help recommit a fixed version of r310208. As shown in PR34097,
we could miscompile if subtraction of the constants overflowed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310490 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] Emit error when ARM exec mode is not available.
Florian Hahn [Wed, 9 Aug 2017 15:39:10 +0000 (15:39 +0000)]
[ARM] Emit error when ARM exec mode is not available.

Summary:
A similar error message has been removed from the ARMTargetMachineBase
constructor in r306939. With this patch, we generate an error message
for the example below, compiled with -mcpu=cortex-m0, which does not
have ARM execution mode.

    __attribute__((target("arm"))) int foo(int a, int b)
    {
        return a + b % a;
    }

    __attribute__((target("thumb"))) int bar(int a, int b)
    {
        return a + b % a;
    }

By adding this error message to ARMBaseTargetMachine::getSubtargetImpl,
we can deal with functions that set -thumb-mode in target-features.
At the moment it seems like Clang does not have access to target-feature
specific information, so adding the error message to the frontend will
be harder.

Reviewers: echristo, richard.barton.arm, t.p.northover, rengolin, efriedma

Reviewed By: echristo, efriedma

Subscribers: efriedma, aemerson, javed.absar, kristof.beyls

Differential Revision: https://reviews.llvm.org/D35627

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310486 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86][Asm]Allow far jmp/call to be picked when using explicit FWORD size specifier
Coby Tayree [Wed, 9 Aug 2017 15:34:55 +0000 (15:34 +0000)]
[X86][Asm]Allow far jmp/call to be picked when using explicit FWORD size specifier

Currently, far jmp/call which utilizes a 48bit memory operand would have been invoked via the 'lcall/ljmp' mnemonic (intel style).
This patch align those variants to formal intel spec

Differential Revision: https://reviews.llvm.org/D35846

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310485 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ValueTracking] Honour recursion limit.
Davide Italiano [Wed, 9 Aug 2017 15:13:50 +0000 (15:13 +0000)]
[ValueTracking] Honour recursion limit.

The recently improved support for `icmp` in ValueTracking
(r307304) exposes the fact that `isImplied` condition doesn't
really bail out if we hit the recursion limit (and calls
`computeKnownBits` which increases the depth and asserts).

Differential Revision:  https://reviews.llvm.org/D36512

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310481 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AArch64] Assembler support for the ARMv8.2a dot product instructions
Sjoerd Meijer [Wed, 9 Aug 2017 14:59:54 +0000 (14:59 +0000)]
[AArch64] Assembler support for the ARMv8.2a dot product instructions

Dot product is an optional ARMv8.2a extension, see also the public architecture
specification here:
https://developer.arm.com/products/architecture/a-profile/exploration-tools.
This patch adds AArch64 assembler support for these dot product instructions.

Differential Revision: https://reviews.llvm.org/D36515

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310480 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] Remove FeatureNoARM implies ModeThumb.
Florian Hahn [Wed, 9 Aug 2017 13:53:28 +0000 (13:53 +0000)]
[ARM] Remove FeatureNoARM implies ModeThumb.

Summary:
By removing FeatureNoARM implies ModeThumb, we can detect cases where a
function's target-features contain -thumb-mode (enables ARM codegen for the
function), but the architecture does not support ARM mode. Previously, the
implication caused the FeatureNoARM bit to be cleared for functions with
-thumb-mode, making the assertion in ARMSubtarget::ARMSubtarget [1]
pointless for such functions.

This assertion is the only guard against generating ARM code for
architectures without ARM codegen support. Is there a place where we
could easily generate error messages for the user? At the moment, we
would generate ARM code for Thumb-only architectures. X86 has the same
behavior as ARM, as in it only has an assertion and no error message,
but I think for ARM an error message would be helpful. What do you
think?

For the example below, `llc -mtriple=armv7m-eabi test.ll -o -` will
generate ARM assembler (or fail with an assertion error with this patch).
Note that if we run the resulting assembler through llvm-mc, we get
an appropriate error message, but not when codegen is handled
through clang.

```
define void @bar() #0 {
entry:
  ret void
}

attributes #0 = { "target-features"="-thumb-mode" }
```

[1] https://github.com/llvm-mirror/llvm/blob/c1f7b54cef62e9c8aa745d40bea146a167bf844e/lib/Target/ARM/ARMSubtarget.cpp#L147

Reviewers: t.p.northover, rengolin, peter.smith, aadg, silviu.baranga, richard.barton.arm, echristo

Reviewed By: rengolin, echristo

Subscribers: efriedma, aemerson, javed.absar, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D35569

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310476 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Support] PR33388 - Fix formatv_object move constructor
Benoit Belley [Wed, 9 Aug 2017 13:47:01 +0000 (13:47 +0000)]
[Support] PR33388 - Fix formatv_object move constructor

formatv_object currently uses the implicitly defined move constructor,
but it is buggy. In typical use-cases, the problem doesn't show-up
because all calls to the move constructor are elided. Thus, the buggy
constructors are never invoked.

The issue especially shows-up when code is compiled using the
-fno-elide-constructors compiler flag. For instance, this is useful when
attempting to collect accurate code coverage statistics.

The exact issue is the following:

The Parameters data member is correctly moved, thus making the
parameters occupy a new memory location in the target
object. Unfortunately, the default copying of the Adapters blindly
copies the vector of pointers, leaving each of these pointers
referencing the parameters in the original object instead of the copied
one. These pointers quickly become dangling when the original object is
deleted. This quickly leads to crashes.

The solution is to update the Adapters pointers when performing a move.
The copy constructor isn't useful for format objects and can thus be
deleted.

This resolves PR33388.

Differential Revision: https://reviews.llvm.org/D34463

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310475 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[DAG] Explicitly cleanup merged load values during store merge. NFCI.
Nirav Dave [Wed, 9 Aug 2017 13:37:07 +0000 (13:37 +0000)]
[DAG] Explicitly cleanup merged load values during store merge. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310474 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix -Wpessimizing-move warning.
Haojian Wu [Wed, 9 Aug 2017 12:49:20 +0000 (12:49 +0000)]
Fix -Wpessimizing-move warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310469 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AsmParser][AVX512]Enhance OpMask/Zero/Merge syntax check rubostness
Coby Tayree [Wed, 9 Aug 2017 12:32:05 +0000 (12:32 +0000)]
[AsmParser][AVX512]Enhance OpMask/Zero/Merge syntax check rubostness

Adopt a more strict approach regarding what marks should/can appear after a destination register, when operating upon an AVX512 platform.

Differential Revision: https://reviews.llvm.org/D35785

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310467 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LSR / TTI / SystemZ] Eliminate TargetTransformInfo::isFoldableMemAccess()
Jonas Paulsson [Wed, 9 Aug 2017 11:28:01 +0000 (11:28 +0000)]
[LSR / TTI / SystemZ]  Eliminate TargetTransformInfo::isFoldableMemAccess()

isLegalAddressingMode() has recently gained the extra optional Instruction*
parameter, and therefore it can now do the job that previously only
isFoldableMemAccess() could do.

The SystemZ implementation of isLegalAddressingMode() has gained the
functionality of checking for offsets, which used to be done with
isFoldableMemAccess().

The isFoldableMemAccess() hook has been removed everywhere.

Review: Quentin Colombet, Ulrich Weigand
https://reviews.llvm.org/D35933

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310463 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LoopStrengthReduce] Don't neglect the Fixup.Offset in isAMCompletelyFolded().
Jonas Paulsson [Wed, 9 Aug 2017 11:27:46 +0000 (11:27 +0000)]
[LoopStrengthReduce]  Don't neglect the Fixup.Offset in isAMCompletelyFolded().

In the recursive call to isAMCompletelyFolded(), the passed offset should be
the sum of F.BaseOffset and Fixup.Offset.

Review: Quentin Colombet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310462 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[mips] PR34083 - Wimplicit-fallthrough warning in MipsAsmParser.cpp
Simon Dardis [Wed, 9 Aug 2017 10:47:52 +0000 (10:47 +0000)]
[mips] PR34083 - Wimplicit-fallthrough warning in MipsAsmParser.cpp

Assert that a binary expression is actually a binary expression,
rather than potientially incorrectly attempting to handle it as a
unary expression.

This resolves PR34083.

Thanks to Simonn Pilgrim for reporting the issue!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310460 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoSuppress a warning. NFC.
Gabor Horvath [Wed, 9 Aug 2017 10:38:53 +0000 (10:38 +0000)]
Suppress a warning. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310459 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AsmParser] Hash is not a comment on some targets
Oliver Stannard [Wed, 9 Aug 2017 09:40:51 +0000 (09:40 +0000)]
[AsmParser] Hash is not a comment on some targets

The '#' token is not a comment for all targets (on ARM and AArch64 it marks an
immediate operand), so we shouldn't treat it as such.

Comments are already converted to AsmToken::EndOfStatement by
AsmLexer::LexLineComment, so this check was unnecessary.

Differential Revision: https://reviews.llvm.org/D36405

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310457 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LCG] Completely remove the map-based association of post-order numbers
Chandler Carruth [Wed, 9 Aug 2017 09:37:39 +0000 (09:37 +0000)]
[LCG] Completely remove the map-based association of post-order numbers
to Nodes when removing ref edges from a RefSCC.

This map based association turns out to be pretty expensive for large
RefSCCs and pointless as we already have embedded data members inside
nodes that we use to track the DFS state. We can reuse one of those and
the map becomes unnecessary.

This also fuses the update of those numbers into the scan across the
pending stack of nodes so that we don't walk the nodes twice during the
DFS.

With this I expect the new PM to be faster than the old PM for the test
case I have been optimizing. That said, it also seems simpler and more
direct in many ways. The side storage was always pretty awkward.

The last remaining hot-spot in the profile of the LCG once this is done
will be the edge iterator walk in the DFS. I'll take a look at improving
that next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310456 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[GlobalOpt] Switch an explicit loop to llvm::all_of(). NFCI.
Davide Italiano [Wed, 9 Aug 2017 09:23:29 +0000 (09:23 +0000)]
[GlobalOpt] Switch an explicit loop to llvm::all_of(). NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310453 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LCG] Special case when removing a ref edge from a RefSCC leaves
Chandler Carruth [Wed, 9 Aug 2017 09:14:34 +0000 (09:14 +0000)]
[LCG] Special case when removing a ref edge from a RefSCC leaves
that RefSCC still connected.

This is common and can be handled much more efficiently. As soon as we
know we've covered every node in the RefSCC with the DFS, we can simply
reset our state and return. This avoids numerous data structure updates
and other complexity.

On top of other changes, this appears to get new PM back to parity with
the old PM for a large protocol buffer message source code. The dense
map updates are very hot in this function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310451 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LCG] Switch one of the update methods for the LazyCallGraph to support
Chandler Carruth [Wed, 9 Aug 2017 09:05:27 +0000 (09:05 +0000)]
[LCG] Switch one of the update methods for the LazyCallGraph to support
limited batch updates.

Specifically, allow removing multiple reference edges starting from
a common source node. There are a few constraints that play into
supporting this form of batching:

1) The way updates occur during the CGSCC walk, about the most we can
   functionally batch together are those with a common source node. This
   also makes the batching simpler to implement, so it seems
   a worthwhile restriction.
2) The far and away hottest function for large C++ files I measured
   (generated code for protocol buffers) showed a huge amount of time
   was spent removing ref edges specifically, so it seems worth focusing
   there.
3) The algorithm for removing ref edges is very amenable to this
   restricted batching. There are just both API and implementation
   special casing for the non-batch case that gets in the way. Once
   removed, supporting batches is nearly trivial.

This does modify the API in an interesting way -- now, we only preserve
the target RefSCC when the RefSCC structure is unchanged. In the face of
any splits, we create brand new RefSCC objects. However, all of the
users were OK with it that I could find. Only the unittest needed
interesting updates here.

How much does batching these updates help? I instrumented the compiler
when run over a very large generated source file for a protocol buffer
and found that the majority of updates are intrinsically updating one
function at a time. However, nearly 40% of the total ref edges removed
are removed as part of a batch of removals greater than one, so these
are the cases batching can help with.

When compiling the IR for this file with 'opt' and 'O3', this patch
reduces the total time by 8-9%.

Differential Revision: https://reviews.llvm.org/D36352

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310450 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Add the rest of the ADC and SBB instructions to isDefConvertible.
Craig Topper [Wed, 9 Aug 2017 06:17:49 +0000 (06:17 +0000)]
[X86] Add the rest of the ADC and SBB instructions to isDefConvertible.

I don't know if this really affects anything. Just thought it was weird that we had all of the ADD/SUB/AND/OR/XOR instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310447 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] Use regular dyn_cast instead of a matcher for a simple case. NFC
Craig Topper [Wed, 9 Aug 2017 06:17:48 +0000 (06:17 +0000)]
[InstCombine] Use regular dyn_cast instead of a matcher for a simple case. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310446 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ImplicitNullCheck] Fix the bug when dependent instruction accesses memory
Serguei Katkov [Wed, 9 Aug 2017 05:17:02 +0000 (05:17 +0000)]
[ImplicitNullCheck] Fix the bug when dependent instruction accesses memory

It is possible that dependent instruction may access memory.
In this case we must reject optimization because the memory change will
be visible in null handler basic block. So we will execute an instruction which
we must not execute if check fails.

Reviewers: sanjoy, reames
Reviewed By: sanjoy
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D36392

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310443 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix broken pdb test.
Zachary Turner [Wed, 9 Aug 2017 04:48:16 +0000 (04:48 +0000)]
Fix broken pdb test.

For some reason I didn't see this failure the first time.  The
output format changed slightly, so we just have to update the
test for the new format.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310442 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix -Wreorder-fields warning.
Zachary Turner [Wed, 9 Aug 2017 04:34:11 +0000 (04:34 +0000)]
Fix -Wreorder-fields warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310440 91177308-0d34-0410-b5e6-96231b3b80d8