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7 years ago[SCEV] Use find instead of find_as; NFC
Sanjoy Das [Tue, 27 Sep 2016 18:01:46 +0000 (18:01 +0000)]
[SCEV] Use find instead of find_as; NFC

We don't need the extra generality here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282514 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Reduce the scope of a struct; NFC
Sanjoy Das [Tue, 27 Sep 2016 18:01:44 +0000 (18:01 +0000)]
[SCEV] Reduce the scope of a struct; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282513 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Remove custom RAII wrapper; NFC
Sanjoy Das [Tue, 27 Sep 2016 18:01:42 +0000 (18:01 +0000)]
[SCEV] Remove custom RAII wrapper; NFC

Instead use the pre-existing `scope_exit` class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282512 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Make PendingLoopPredicates more frugal; NFCI
Sanjoy Das [Tue, 27 Sep 2016 18:01:38 +0000 (18:01 +0000)]
[SCEV] Make PendingLoopPredicates more frugal; NFCI

I don't expect `PendingLoopPredicates` to have very many
elements (e.g. when -O3'ing the sqlite3 amalgamation,
`PendingLoopPredicates` has at most 3 elements).  So now we use a
`SmallPtrSet` for it instead of the more heavyweight `DenseSet`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282511 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CMake] Use if(... IN_LIST ...) instead of list(FIND...)
Chris Bieneman [Tue, 27 Sep 2016 17:47:24 +0000 (17:47 +0000)]
[CMake] Use if(... IN_LIST ...) instead of list(FIND...)

NFC. This is just a little code cleanup to make things easier to read and understand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282510 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoPropagate DBG_VALUE entries when there are unvisited predecessors
Keith Walker [Tue, 27 Sep 2016 16:46:07 +0000 (16:46 +0000)]
Propagate DBG_VALUE entries when there are unvisited predecessors

Variables are sometimes missing their debug location information in
blocks in which the variables should be available. This would occur
when one or more predecessor blocks had not yet been visited by the
routine which propagated the information from predecessor blocks.

This is addressed by only considering predecessor blocks which have
already been visited.

The solution to this problem was suggested by Daniel Berlin on the
LLVM developer mailing list.

Differential Revision: https://reviews.llvm.org/D24927

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282506 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "Output optimization remarks in YAML"
Adam Nemet [Tue, 27 Sep 2016 16:39:24 +0000 (16:39 +0000)]
Revert "Output optimization remarks in YAML"

This reverts commit r282499.

The GCC bots are failing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282503 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd llvm::join_items to StringExtras.
Zachary Turner [Tue, 27 Sep 2016 16:37:30 +0000 (16:37 +0000)]
Add llvm::join_items to StringExtras.

llvm::join_items is similar to llvm::join, which produces a string
by concatenating a sequence of values together separated by a
given separator.  But it differs in that the arguments to
llvm::join() are same-type members of a container, whereas the
arguments to llvm::join_items are arbitrary types passed into
a variadic template.  The only requirement on parameters to
llvm::join_items (including for the separator themselves) is
that they be implicitly convertible to std::string or have
an overload of std::string::operator+

Differential Revision: https://reviews.llvm.org/D24880

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282502 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[lit] Fix refacto introduced by rL282479.
Daniel Dunbar [Tue, 27 Sep 2016 16:17:42 +0000 (16:17 +0000)]
[lit] Fix refacto introduced by rL282479.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282501 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoOutput optimization remarks in YAML
Adam Nemet [Tue, 27 Sep 2016 16:15:16 +0000 (16:15 +0000)]
Output optimization remarks in YAML

This allows various presentation of this data using an external tool.
This was first recommended here[1].

As an example, consider this module:

  1 int foo();
  2 int bar();
  3
  4 int baz() {
  5   return foo() + bar();
  6 }

The inliner generates these missed-optimization remarks today (the
hotness information is pulled from PGO):

  remark: /tmp/s.c:5:10: foo will not be inlined into baz (hotness: 30)
  remark: /tmp/s.c:5:18: bar will not be inlined into baz (hotness: 30)

Now with -pass-remarks-output=<yaml-file>, we generate this YAML file:

  --- !Missed
  Pass:            inline
  Name:            NotInlined
  DebugLoc:        { File: /tmp/s.c, Line: 5, Column: 10 }
  Function:        baz
  Hotness:         30
  Args:
    - Callee: foo
    - String:  will not be inlined into
    - Caller: baz
  ...
  --- !Missed
  Pass:            inline
  Name:            NotInlined
  DebugLoc:        { File: /tmp/s.c, Line: 5, Column: 18 }
  Function:        baz
  Hotness:         30
  Args:
    - Callee: bar
    - String:  will not be inlined into
    - Caller: baz
  ...

This is a summary of the high-level decisions:

* There is a new streaming interface to emit optimization remarks.
E.g. for the inliner remark above:

   ORE.emit(DiagnosticInfoOptimizationRemarkMissed(
                DEBUG_TYPE, "NotInlined", &I)
            << NV("Callee", Callee) << " will not be inlined into "
            << NV("Caller", CS.getCaller()) << setIsVerbose());

NV stands for named value and allows the YAML client to process a remark
using its name (NotInlined) and the named arguments (Callee and Caller)
without parsing the text of the message.

Subsequent patches will update ORE users to use the new streaming API.

* I am using YAML I/O for writing the YAML file.  YAML I/O requires you
to specify reading and writing at once but reading is highly non-trivial
for some of the more complex LLVM types.  Since it's not clear that we
(ever) want to use LLVM to parse this YAML file, the code supports and
asserts that we're writing only.

On the other hand, I did experiment that the class hierarchy starting at
DiagnosticInfoOptimizationBase can be mapped back from YAML generated
here (see D24479).

* The YAML stream is stored in the LLVM context.

* In the example, we can probably further specify the IR value used,
i.e. print "Function" rather than "Value".

* As before hotness is computed in the analysis pass instead of
DiganosticInfo.  This avoids the layering problem since BFI is in
Analysis while DiagnosticInfo is in IR.

[1] https://reviews.llvm.org/D19678#419445

Differential Revision: https://reviews.llvm.org/D24587

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282499 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoSort headers
Adam Nemet [Tue, 27 Sep 2016 16:15:11 +0000 (16:15 +0000)]
Sort headers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282498 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoproject_id is from another era in phabricator land and does not provide any value.
Manuel Klimek [Tue, 27 Sep 2016 15:47:29 +0000 (15:47 +0000)]
project_id is from another era in phabricator land and does not provide any value.

Patch by Eitan Adler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282494 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd xxhash to llvm.
Rafael Espindola [Tue, 27 Sep 2016 15:45:57 +0000 (15:45 +0000)]
Add xxhash to llvm.

It will be used for fast fingerprinting in lld at least.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282493 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[docs] Fix naming style in the example
Alexander Kornienko [Tue, 27 Sep 2016 14:49:45 +0000 (14:49 +0000)]
[docs] Fix naming style in the example

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282490 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AMDGPU] Enable changing instprinter's behavior based on the per-function
Konstantin Zhuravlyov [Tue, 27 Sep 2016 14:42:48 +0000 (14:42 +0000)]
[AMDGPU] Enable changing instprinter's behavior based on the per-function
subtarget

This is a prerequisite for coming waitcnt changes

Differential Revision: https://reviews.llvm.org/D24939

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282489 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[mips] Disable tail calls temporarily
Simon Dardis [Tue, 27 Sep 2016 13:15:54 +0000 (13:15 +0000)]
[mips] Disable tail calls temporarily

Disable tail calls while the remaining bugs are fixed. Enable only for tests.

Reviewers: vkalintiris

Differential Review: https://reviews.llvm.org/D24912

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282487 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[mips] Add rsqrt, recip for MIPS
Simon Dardis [Tue, 27 Sep 2016 12:25:15 +0000 (12:25 +0000)]
[mips] Add rsqrt, recip for MIPS

Add rsqrt.[ds], recip.[ds] for MIPS. Correct the microMIPS definitions for
architecture support and register usage.

Reviewers: vkalintiris, zoran.jovanoic

Differential Review: https://reviews.llvm.org/D24499

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282485 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[docs] Make WritingAnLLVMPass.rst up-to-date with current state of things
Andrey Bokhanko [Tue, 27 Sep 2016 12:07:21 +0000 (12:07 +0000)]
[docs] Make WritingAnLLVMPass.rst up-to-date with current state of things

This patch updates WritingAnLLVMPass.rst to make it in line with current state of things.

Specifically:

* Makefile instructions replaced with CMake ones
* Filenames replaced with correct ones
* Example reformatted a bit to make it less confusing and more conforming to LLVM Coding Standards
* opt tool output updated with what it actually prints nowdays
* "gcse" (which doesn't exist anymore) replaced with "gvn" (which still does)

Differential Revision: https://reviews.llvm.org/D24233

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282482 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoTrying to fix lldb build breakage probably caused by rL282452
Dimitar Vlahovski [Tue, 27 Sep 2016 10:34:43 +0000 (10:34 +0000)]
Trying to fix lldb build breakage probably caused by rL282452

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282479 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Power9] Builtins for ELF v.2 API conformance - back end portion
Nemanja Ivanovic [Tue, 27 Sep 2016 08:42:12 +0000 (08:42 +0000)]
[Power9] Builtins for ELF v.2 API conformance - back end portion

This patch corresponds to review:
https://reviews.llvm.org/D24396

This patch adds support for the "vector count trailing zeroes",
"vector compare not equal" and "vector compare not equal or zero instructions"
as well as "scalar count trailing zeroes" instructions. It also changes the
vector negation to use XXLNOR (when VSX is enabled) so as not to increase
register pressure (previously this was done with a splat immediate of all
ones followed by an XXLXOR). This was done because the altivec.h
builtins (patch to follow) use vector negation and the use of an additional
register for the splat immediate is not optimal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282478 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Add test case for PR30511 and r282341.
Craig Topper [Tue, 27 Sep 2016 06:44:30 +0000 (06:44 +0000)]
[X86] Add test case for PR30511 and r282341.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282473 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Expand all-ones-vector test to cover 256-bit and 512-bit vectors.
Craig Topper [Tue, 27 Sep 2016 06:44:27 +0000 (06:44 +0000)]
[X86] Expand all-ones-vector test to cover 256-bit and 512-bit vectors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282472 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Use std::max to calculate alignment instead of assuming RC->getSize() will...
Craig Topper [Tue, 27 Sep 2016 06:44:25 +0000 (06:44 +0000)]
[X86] Use std::max to calculate alignment instead of assuming RC->getSize() will not return a value greater than 32. I think it theoretically could be 64 for AVX-512.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282471 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[libFuzzer] run re2 test in 8 threads by default
Kostya Serebryany [Tue, 27 Sep 2016 03:33:57 +0000 (03:33 +0000)]
[libFuzzer] run re2 test in 8 threads by default

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282469 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[sanitizer-coverage] fix a bug in trace-gep
Kostya Serebryany [Tue, 27 Sep 2016 01:55:08 +0000 (01:55 +0000)]
[sanitizer-coverage] fix a bug in trace-gep

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282467 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[sanitizer-coverage] don't emit the CTOR function if nothing has been instrumented
Kostya Serebryany [Tue, 27 Sep 2016 01:08:33 +0000 (01:08 +0000)]
[sanitizer-coverage] don't emit the CTOR function if nothing has been instrumented

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282465 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert r277556. Add -lowertypetests-bitsets-level to control bitsets generation
Ivan Krasin [Tue, 27 Sep 2016 00:29:53 +0000 (00:29 +0000)]
Revert r277556. Add -lowertypetests-bitsets-level to control bitsets generation

Summary:
We don't currently need this facility for CFI. Disabling individual hot methods proved
to be a better strategy in Chrome.

Also, the design of the feature is suboptimal, as pointed out by Peter Collingbourne.

Reviewers: pcc

Subscribers: kcc

Differential Revision: https://reviews.llvm.org/D24948

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282461 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[libFuzzer] add a test based on openssl-1.0.1f (finds heartbleed)
Kostya Serebryany [Tue, 27 Sep 2016 00:27:40 +0000 (00:27 +0000)]
[libFuzzer] add a test based on openssl-1.0.1f (finds heartbleed)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282460 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[libFuzzer] add -exit_on_src_pos to test libFuzzer itself, add a test script for...
Kostya Serebryany [Tue, 27 Sep 2016 00:10:20 +0000 (00:10 +0000)]
[libFuzzer] add -exit_on_src_pos to test libFuzzer itself, add a test script for RE2 that uses this flag

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282458 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoLowerTypeTests: Remove unused variable.
Peter Collingbourne [Mon, 26 Sep 2016 23:56:17 +0000 (23:56 +0000)]
LowerTypeTests: Remove unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282456 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoLowerTypeTests: Create LowerTypeTestsModule class and move implementation there....
Peter Collingbourne [Mon, 26 Sep 2016 23:54:39 +0000 (23:54 +0000)]
LowerTypeTests: Create LowerTypeTestsModule class and move implementation there. Related simplifications.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282455 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[lit] Add a --max-failures option.
Daniel Dunbar [Mon, 26 Sep 2016 23:38:23 +0000 (23:38 +0000)]
[lit] Add a --max-failures option.

 - This is primarily useful as a "fail fast" mode for lit, where it will stop
   running tests after the first failure.

 - Patch by Max Moiseev.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282452 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CodeGen] Add support for emitting .init_array instead of .ctors on FreeBSD.
Davide Italiano [Mon, 26 Sep 2016 22:53:15 +0000 (22:53 +0000)]
[CodeGen] Add support for emitting .init_array instead of .ctors on FreeBSD.

PR: 30494

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282451 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[CodeGen] Switch test as FreeBSD will support .init_array soon.
Davide Italiano [Mon, 26 Sep 2016 22:38:17 +0000 (22:38 +0000)]
[CodeGen] Switch test as FreeBSD will support .init_array soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282450 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[WebAssembly] Use the frame pointer instead of the stack pointer
Derek Schuff [Mon, 26 Sep 2016 21:18:03 +0000 (21:18 +0000)]
[WebAssembly] Use the frame pointer instead of the stack pointer

When we have dynamic allocas we have a frame pointer, and
when we're lowering frame indexes we should make sure we use it.

Patch by Jacob Gravelle

Differential Revision: https://reviews.llvm.org/D24889

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282442 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoNext set of additional error checks for invalid Mach-O files for the
Kevin Enderby [Mon, 26 Sep 2016 21:11:03 +0000 (21:11 +0000)]
Next set of additional error checks for invalid Mach-O files for the
other load commands that use the Mach::linkedit_data_command type
but not used in llvm libObject code but used in llvm tool code.

This includes LC_FUNCTION_STARTS, LC_SEGMENT_SPLIT_INFO
and LC_DYLIB_CODE_SIGN_DRS load commands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282441 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoMove computation past early return
Aditya Kumar [Mon, 26 Sep 2016 21:01:13 +0000 (21:01 +0000)]
Move computation past early return

Reviewers:
        rafael
        spatel

Differential Revision: https://reviews.llvm.org/D24843

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282440 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[thinlto] Basic thinlto fdo heuristic
Piotr Padlewski [Mon, 26 Sep 2016 20:37:32 +0000 (20:37 +0000)]
[thinlto] Basic thinlto fdo heuristic

Summary:
This patch improves thinlto importer
by importing 3x larger functions that are called from hot block.

I compared performance with the trunk on spec, and there
were about 2% on povray and 3.33% on milc. These results seems
to be consistant and match the results Teresa got with her simple
heuristic. Some benchmarks got slower but I think they are just
noisy (mcf, xalancbmki, omnetpp)- running the benchmarks again with
more iterations to confirm. Geomean of all benchmarks including the noisy ones
were about +0.02%.

I see much better improvement on google branch with Easwaran patch
for pgo callsite inlining (the inliner actually inline those big functions)
Over all I see +0.5% improvement, and I get +8.65% on povray.
So I guess we will see much bigger change when Easwaran patch will land
(it depends on new pass manager), but it is still worth putting this to trunk
before it.

Implementation details changes:
- Removed CallsiteCount.
- ProfileCount got replaced by Hotness
- hot-import-multiplier is set to 3.0 for now,
didn't have time to tune it up, but I see that we get most of the interesting
functions with 3, so there is no much performance difference with higher, and
binary size doesn't grow as much as with 10.0.

Reviewers: eraman, mehdi_amini, tejohnson

Subscribers: mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D24638

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282437 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAllow StringRef to be constructed from a null pointer.
Zachary Turner [Mon, 26 Sep 2016 20:08:05 +0000 (20:08 +0000)]
Allow StringRef to be constructed from a null pointer.

Differential Revision: https://reviews.llvm.org/D24904

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282433 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd support for Code16GCC
Nirav Dave [Mon, 26 Sep 2016 19:33:36 +0000 (19:33 +0000)]
Add support for Code16GCC

[X86] The .code16gcc directive parses X86 assembly input in 32-bit mode and
outputs in 16-bit mode. Teach parser to switch modes appropriately.

Reviewers: dwmw2, craig.topper

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D20109

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282430 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd optimization bisect support to an optional Mips pass
Andrew Kaylor [Mon, 26 Sep 2016 19:05:37 +0000 (19:05 +0000)]
Add optimization bisect support to an optional Mips pass

Differential Revision: https://reviews.llvm.org/D19513

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282428 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoStatistic: Only print statistics on exit for -stats
Matthias Braun [Mon, 26 Sep 2016 18:38:07 +0000 (18:38 +0000)]
Statistic: Only print statistics on exit for -stats

Previously enabling the statistics with EnableStatistics() would lead to
them getting printed to stderr/-info-output-file on exit. However
frontends may want a way to enable statistics and do the printing on
their own instead of the forced printing on exit.

This changes the code so that only the -stats option enables printing on
exit, EnableStatistics() only enables the tracking but requires invoking
one of the PrintStatistics() variants.

Differential Revision: https://reviews.llvm.org/D24819

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282425 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoMachineInstr: Fix comment typo, further refine comment; NFC
Matthias Braun [Mon, 26 Sep 2016 18:38:05 +0000 (18:38 +0000)]
MachineInstr: Fix comment typo, further refine comment; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282424 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AArch64] Fix test triplet
Evandro Menezes [Mon, 26 Sep 2016 18:09:21 +0000 (18:09 +0000)]
[AArch64] Fix test triplet

Specify proper target triplet to pass under Windows too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282423 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[llvm-cov] Silence a warning from the MSVC runtime (NFC)
Vedant Kumar [Mon, 26 Sep 2016 17:57:13 +0000 (17:57 +0000)]
[llvm-cov] Silence a warning from the MSVC runtime (NFC)

Rework getLongestCommonPrefixLen() so that it doesn't access string null
terminators. The old version with std::mismatch would do this:

                        |
                        v
    Strings[0] = ['a', nil]

    Strings[1] = ['a', 'a', nil]
                        ^
                        |

This should silence a warning from the MSVC runtime (PR30515). As
before, I tested this out by preparing a coverage report for FileCheck.
Thanks to Yaron Keren for the report!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282422 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoUpdate MemorySSA unittest to account for non-pruned SSA form
Daniel Berlin [Mon, 26 Sep 2016 17:44:31 +0000 (17:44 +0000)]
Update MemorySSA unittest to account for non-pruned SSA form

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282421 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAMDGPU/SI: Don't crash on anonymous GlobalValues
Tom Stellard [Mon, 26 Sep 2016 17:29:25 +0000 (17:29 +0000)]
AMDGPU/SI: Don't crash on anonymous GlobalValues

Summary:
We need to call AsmPrinter::getNameWithPrefix() in order to handle
anonymous GlobalValues (e.g. @0, @1).

Reviewers: arsenm, b-sumner

Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, tony-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D24865

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282420 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRemove pruning of phi nodes in MemorySSA - it makes updating harder
Daniel Berlin [Mon, 26 Sep 2016 17:22:54 +0000 (17:22 +0000)]
Remove pruning of phi nodes in MemorySSA - it makes updating harder

Reviewers: george.burgess.iv

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D24923

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282419 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[LV] Scalarize instructions marked scalar after vectorization
Matthew Simpson [Mon, 26 Sep 2016 17:08:37 +0000 (17:08 +0000)]
[LV] Scalarize instructions marked scalar after vectorization

This patch ensures that we actually scalarize instructions marked scalar after
vectorization. Previously, such instructions may have been vectorized instead.

Differential Revision: https://reviews.llvm.org/D23889

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282418 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[Coroutines] Part14: Handle coroutines with no suspend points.
Gor Nishanov [Mon, 26 Sep 2016 15:49:28 +0000 (15:49 +0000)]
[Coroutines] Part14: Handle coroutines with no suspend points.

Summary:
If coroutine has no suspend points, remove heap allocation and turn a coroutine into a normal function.

Also, if a pattern is detected that coroutine resumes or destroys itself prior to coro.suspend call, turn the suspend point into a simple jump to resume or cleanup label. This pattern occurs when coroutines are used to propagate errors in functions that return expected<T>.

Reviewers: majnemer

Subscribers: mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D24408

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282414 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AArch64] Improve add/sub/cmp isel of uxtw forms.
Geoff Berry [Mon, 26 Sep 2016 15:34:47 +0000 (15:34 +0000)]
[AArch64] Improve add/sub/cmp isel of uxtw forms.

Don't match the UXTW extended reg forms of ADD/ADDS/SUB/SUBS if the
32-bit to 64-bit zero-extend can be done for free by taking advantage
of the 32-bit defining instruction zeroing the upper 32-bits of the X
register destination.  This enables better instruction selection in a
few cases, such as:

  sub x0, xzr, x8
  instead of:
  mov x8, xzr
  sub x0, x8, w9, uxtw

  madd x0, x1, x1, x8
  instead of:
  mul x9, x1, x1
  add x0, x9, w8, uxtw

  cmp x2, x8
  instead of:
  sub x8, x2, w8, uxtw
  cmp x8, #0

  add x0, x8, x1, lsl #3
  instead of:
  lsl x9, x1, #3
  add x0, x9, w8, uxtw

Reviewers: t.p.northover, jmolloy

Subscribers: mcrosier, aemerson, llvm-commits, rengolin

Differential Revision: https://reviews.llvm.org/D24747

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282413 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd support to optionally limit the size of jump tables.
Evandro Menezes [Mon, 26 Sep 2016 15:32:33 +0000 (15:32 +0000)]
Add support to optionally limit the size of jump tables.

Many high-performance processors have a dedicated branch predictor for
indirect branches, commonly used with jump tables.  As sophisticated as such
branch predictors are, they tend to have well defined limits beyond which
their effectiveness is hampered or even nullified.  One such limit is the
number of possible destinations for a given indirect branches that such
branch predictors can handle.

This patch considers a limit that a target may set to the number of
destination addresses in a jump table.

Patch by: Evandro Menezes <e.menezes@samsung.com>, Aditya Kumar
<aditya.k7@samsung.com>, Sebastian Pop <s.pop@samsung.com>.

Differential revision: https://reviews.llvm.org/D21940

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282412 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] Fixed bug introduced in r282237
Alexey Bataev [Mon, 26 Sep 2016 13:18:59 +0000 (13:18 +0000)]
[InstCombine] Fixed bug introduced in r282237

The index of the new insertelement instruction was evaluated in the
wrong way, it was considered as the index of the inserted value instead
of index of the position, where the value should be inserted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282401 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix typo in comment, NFC
Krzysztof Parzyszek [Mon, 26 Sep 2016 12:38:03 +0000 (12:38 +0000)]
Fix typo in comment, NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282399 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[InstCombine] Teach the udiv folding logic how to handle constant expressions.
Andrea Di Biagio [Mon, 26 Sep 2016 12:07:23 +0000 (12:07 +0000)]
[InstCombine] Teach the udiv folding logic how to handle constant expressions.

This patch fixes PR30366.

Function foldUDivShl() worked under the assumption that one of the values
in input to the function was always an instance of llvm::Instruction.
However, function visitUDivOperand() (the only user of foldUDivShl) was
clearly violating that precondition; internally, visitUDivOperand() uses pattern
matches to check the operands of a udiv. Pattern matchers for binary operators
know how to handle both Instruction and ConstantExpr values.

This patch fixes the problem in foldUDivShl(). Now we use pattern matchers
instead of explicit casts to Instruction. The reduced test case from PR30366
has been added to test file InstCombine/udiv-simplify.ll.

Differential Revision: https://reviews.llvm.org/D24565

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282398 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVR] Add AVRMCExpr
Dylan McKay [Mon, 26 Sep 2016 11:35:32 +0000 (11:35 +0000)]
[AVR] Add AVRMCExpr

Summary: This adds the AVRMCExpr headers and implementation.

Reviewers: arsenm, ruiu, grosbach, kparzysz

Subscribers: wdng, beanz, mgorny, kparzysz, jtbandes, llvm-commits

Differential Revision: https://reviews.llvm.org/D20503

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282397 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoRevert "[AMDGPU] Disassembler: print label names in branch instructions"
Sam Kolton [Mon, 26 Sep 2016 11:29:03 +0000 (11:29 +0000)]
Revert "[AMDGPU] Disassembler: print label names in branch instructions"

This reverts commit 6c6dbe625263ec9fcf8de0df27263cf147cde550.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282396 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AMDGPU] Disassembler: print label names in branch instructions
Sam Kolton [Mon, 26 Sep 2016 10:05:50 +0000 (10:05 +0000)]
[AMDGPU] Disassembler: print label names in branch instructions

Summary: Add AMDGPUSymbolizer for finding names for labels from ELF symbol table.

Reviewers: vpykhtin, artem.tamazov, tstellarAMD

Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, tony-tye

Differential Revision: https://reviews.llvm.org/D24802

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282394 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[ARM] Promote small global constants to constant pools
James Molloy [Mon, 26 Sep 2016 07:26:24 +0000 (07:26 +0000)]
[ARM] Promote small global constants to constant pools

If a constant is unamed_addr and is only used within one function, we can save
on the code size and runtime cost of an indirection by changing the global's storage
to inside the constant pool. For example, instead of:

      ldr r0, .CPI0
      bl printf
      bx lr
    .CPI0: &format_string
    format_string: .asciz "hello, world!\n"

We can emit:

      adr r0, .CPI0
      bl printf
      bx lr
    .CPI0: .asciz "hello, world!\n"

This can cause significant code size savings when many small strings are used in one
function (4 bytes per string).

This recommit contains fixes for a nasty bug related to fast-isel fallback - because
fast-isel doesn't know about this optimization, if it runs and emits references to
a string that we inline (because fast-isel fell back to SDAG) we will end up
with an inlined string and also an out-of-line string, and we won't emit the
out-of-line string, causing backend failures.

It also contains fixes for emitting .text relocations which made the sanitizer
bots unhappy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282387 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Optimization for replacing LEA with MOV at frame index elimination time
Zvi Rackover [Mon, 26 Sep 2016 06:42:07 +0000 (06:42 +0000)]
[X86] Optimization for replacing LEA with MOV at frame index elimination time

Summary:
Replace a LEA instruction of the form 'lea (%esp), %ebx' --> 'mov %esp, %ebx'

MOV is preferable over LEA because usually there are more issue-slots available to execute MOVs than LEAs. Latest processors also support zero-latency MOVs.

Fixes pr29022.

Reviewers: hfinkel, delena, igorb, myatsina, mkuper

Differential Revision: https://reviews.llvm.org/D24705

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282385 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PM] Refactor this unittest a bit to remove duplicated code. This was
Chandler Carruth [Mon, 26 Sep 2016 06:29:21 +0000 (06:29 +0000)]
[PM] Refactor this unittest a bit to remove duplicated code. This was
suggested at one point during code review and I deferred it to
a follow-up commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282383 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86][avx512] Fix bug in masked compress store.
Ayman Musa [Mon, 26 Sep 2016 06:22:08 +0000 (06:22 +0000)]
[X86][avx512] Fix bug in masked compress store.

Differential Revision: https://reviews.llvm.org/D23984

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282381 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Fix the order of members in the initializer list.
Chandler Carruth [Mon, 26 Sep 2016 04:49:58 +0000 (04:49 +0000)]
[SCEV] Fix the order of members in the initializer list.

Noticed due to the warning on this line. Sanjoy is on
a less-than-awesome internet connection, so committing on his behalf.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282380 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PM] Add a unittest covering the invalidation of a Module analysis from
Chandler Carruth [Mon, 26 Sep 2016 04:17:12 +0000 (04:17 +0000)]
[PM] Add a unittest covering the invalidation of a Module analysis from
a function pass nested inside of a CGSCC pass manager.

This is very similar to the previous unittest but makes sure the
invalidation logic works across all the layers here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282378 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[PM] Add a unittest for invalidating module analyses with an SCC pass.
Chandler Carruth [Mon, 26 Sep 2016 04:01:55 +0000 (04:01 +0000)]
[PM] Add a unittest for invalidating module analyses with an SCC pass.

This reinstates r280447. Original commit log:
This wasn't really well explicitly tested with a nice unittest before.
It seems good to have reasonably broken out unittests for this kind of
functionality as I'm workin go other invalidation features to make sure
none of the existing ones regress.

This still has too much duplicated code, I plan to factor that out in
a subsequent commit to use common helpers for repeated parts of this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282377 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Assign LoopPropertiesCache in the move constructor
Sanjoy Das [Mon, 26 Sep 2016 02:44:10 +0000 (02:44 +0000)]
[SCEV] Assign LoopPropertiesCache in the move constructor

In a previous change I collapsed two different caches into one.  When
doing that I noticed that ScalarEvolution's move constructor was not
moving those caches.

To keep the previous change simple, I've moved that bugfix into this
separate change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282376 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Combine two predicates into one; NFC
Sanjoy Das [Mon, 26 Sep 2016 02:44:07 +0000 (02:44 +0000)]
[SCEV] Combine two predicates into one; NFC

Both `loopHasNoSideEffects` and `loopHasNoAbnormalExits` involve walking
the loop and maintaining similar sorts of caches.  This commit changes
SCEV to compute both the predicates via a single walk, and maintain a
single cache instead of two.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282375 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Make it obvious BackedgeTakenInfo's constructor steals storage
Sanjoy Das [Mon, 26 Sep 2016 01:10:27 +0000 (01:10 +0000)]
[SCEV] Make it obvious BackedgeTakenInfo's constructor steals storage

Specifically, it moves SCEVUnionPredicates from its input into its own
storage.  Make this obvious at the type level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282374 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Further isolate incidental data structure; NFC
Sanjoy Das [Mon, 26 Sep 2016 01:10:25 +0000 (01:10 +0000)]
[SCEV] Further isolate incidental data structure; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282373 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Simplify BackedgeTakenInfo::getMax; NFC
Sanjoy Das [Mon, 26 Sep 2016 01:10:22 +0000 (01:10 +0000)]
[SCEV] Simplify BackedgeTakenInfo::getMax; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282372 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAppease MSVC
Sanjoy Das [Mon, 26 Sep 2016 00:22:18 +0000 (00:22 +0000)]
Appease MSVC

... by not default move constructors and operator= s. Defaulting these
works in clang, but not in MSVC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282370 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAttempt to appease MSVC
Sanjoy Das [Mon, 26 Sep 2016 00:00:51 +0000 (00:00 +0000)]
Attempt to appease MSVC

... by explicitly deleting the copy constructor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282369 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Reserve space in SmallVector; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:12:08 +0000 (23:12 +0000)]
[SCEV] Reserve space in SmallVector; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282368 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Document a gotcha; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:12:06 +0000 (23:12 +0000)]
[SCEV] Document a gotcha; NFC

We should re-consider the design decision that led to this gotcah, but
for now just document it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282367 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Have ExitNotTakenInfo keep a pointer to its predicate; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:12:04 +0000 (23:12 +0000)]
[SCEV] Have ExitNotTakenInfo keep a pointer to its predicate; NFC

SCEVUnionPredicate is a "heavyweight" structure, so it is beneficial to
store the (optional) data out of line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282366 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Simplify tracking ExitNotTakenInfo instances; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:12:00 +0000 (23:12 +0000)]
[SCEV] Simplify tracking ExitNotTakenInfo instances; NFC

This change simplifies a data structure optimization in the
`BackedgeTakenInfo` class for loops with exactly one computable exit.

I've sanity checked that this does not regress compile time performance,
using sqlite3's amalgamated build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282365 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Rename a couple of fields; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:11:57 +0000 (23:11 +0000)]
[SCEV] Rename a couple of fields; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282364 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Remove incidental data structure; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:11:55 +0000 (23:11 +0000)]
[SCEV] Remove incidental data structure; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282363 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[SCEV] Clang format most of the SCEV header; NFC
Sanjoy Das [Sun, 25 Sep 2016 23:11:51 +0000 (23:11 +0000)]
[SCEV] Clang format most of the SCEV header; NFC

The indentation for the declared classes was not as per LLVM coding
style.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282362 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Remove what appears to be leftover MMX code involving (v1i64 scalar_to_vector).
Craig Topper [Sun, 25 Sep 2016 16:34:11 +0000 (16:34 +0000)]
[X86] Remove what appears to be leftover MMX code involving (v1i64 scalar_to_vector).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282361 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Remove patterns for scalar_to_vector from FR32/FR64 to 256-bit vectors. Lowerin...
Craig Topper [Sun, 25 Sep 2016 16:34:09 +0000 (16:34 +0000)]
[X86] Remove patterns for scalar_to_vector from FR32/FR64 to 256-bit vectors. Lowering explicitly avoids creating this pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282360 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Replace get512BitSuperRegister with calls to TargetRegisterInfo::getMatchin...
Craig Topper [Sun, 25 Sep 2016 16:34:06 +0000 (16:34 +0000)]
[AVX-512] Replace get512BitSuperRegister with calls to TargetRegisterInfo::getMatchingSuperReg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282359 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Fix some patterns predicates to properly enforce priority for various versi...
Craig Topper [Sun, 25 Sep 2016 16:34:02 +0000 (16:34 +0000)]
[AVX-512] Fix some patterns predicates to properly enforce priority for various versions of CVTDQ2PD instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282358 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Add rounding versions of instructions to hasUndefRegUpdate.
Craig Topper [Sun, 25 Sep 2016 16:33:59 +0000 (16:33 +0000)]
[AVX-512] Add rounding versions of instructions to hasUndefRegUpdate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282357 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Add the scalar unsigned integer to fp conversion instructions to hasUndefRe...
Craig Topper [Sun, 25 Sep 2016 16:33:57 +0000 (16:33 +0000)]
[AVX-512] Add the scalar unsigned integer to fp conversion instructions to hasUndefRegUpdate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282356 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Remove duplicate instructions for converting integer to scalar floating...
Craig Topper [Sun, 25 Sep 2016 16:33:53 +0000 (16:33 +0000)]
[AVX-512] Remove duplicate instructions for converting integer to scalar floating point. We can use patterns to point to the other instructions instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282355 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd a comment on StringRef::contains(char)
Zachary Turner [Sun, 25 Sep 2016 04:06:39 +0000 (04:06 +0000)]
Add a comment on StringRef::contains(char)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282350 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoFix signed / unsigned comparison.
Zachary Turner [Sun, 25 Sep 2016 03:57:34 +0000 (03:57 +0000)]
Fix signed / unsigned comparison.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282348 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAdd some predicated searching functions to StringRef.
Zachary Turner [Sun, 25 Sep 2016 03:27:29 +0000 (03:27 +0000)]
Add some predicated searching functions to StringRef.

This adds 4 new functions to StringRef, which can be used to
take or drop characters while a certain condition is met, or
until a certain condition is met.  They are:

take_while - Return characters until a condition is not met.
take_until - Return characters until a condition is met.
drop_while - Remove characters until a condition is not met.
drop_until - Remove characters until a condition is met.

Internally, all of these functions delegate to two additional
helper functions which can be used to search for the position
of a character meeting or not meeting a condition, which are:

find_if - Find the first character matching a predicate.
find_if_not - Find the first character not matching a predicate.

Differential Revision: https://reviews.llvm.org/D24842

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282346 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Don't use two opcodes for INTR_TYPE_SCALAR_MASK_RM. The handling was such...
Craig Topper [Sun, 25 Sep 2016 01:03:10 +0000 (01:03 +0000)]
[AVX-512] Don't use two opcodes for INTR_TYPE_SCALAR_MASK_RM. The handling was such that if the second opcode was present the first was ingored, so we can just have one opcode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282344 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[X86] Teach combineShuffle to avoid creating floating point operations with integer...
Craig Topper [Sat, 24 Sep 2016 21:42:49 +0000 (21:42 +0000)]
[X86] Teach combineShuffle to avoid creating floating point operations with integer types and integer operations with floating point types. Seems isOperationLegal lies for mismatched types and operations.

Fixes PR30511.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282341 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Split scalar version of X86ISD::SELECT into a separate opcode because isel...
Craig Topper [Sat, 24 Sep 2016 21:42:47 +0000 (21:42 +0000)]
[AVX-512] Split scalar version of X86ISD::SELECT into a separate opcode because isel is not robust with multiple type profiles for the same opcode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282340 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVX-512] Remove the patterns for selecting scalar VCOMI/VUCOMI instructions with...
Craig Topper [Sat, 24 Sep 2016 21:42:43 +0000 (21:42 +0000)]
[AVX-512] Remove the patterns for selecting scalar VCOMI/VUCOMI instructions with SAE as there is no way to create the pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282339 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoObjCARC: Don't look at users of ConstantData
Duncan P. N. Exon Smith [Sat, 24 Sep 2016 21:01:20 +0000 (21:01 +0000)]
ObjCARC: Don't look at users of ConstantData

Stop looking at users of UndefValue and ConstantPointerNull in the
objective C ARC optimizers.  The other users aren't actually
interesting, since they're not pointing at a particular object.  I
imagine these calls could be optimized through -instcombine... maybe
they already are?

These early returns will be required at some point in the future, with a
WIP patch that asserts when someone accesses a use-list on ConstantData.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282338 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAnalysis: Return early for UndefValue in computeKnownBits
Duncan P. N. Exon Smith [Sat, 24 Sep 2016 20:42:02 +0000 (20:42 +0000)]
Analysis: Return early for UndefValue in computeKnownBits

There is no benefit in looking through assumptions on UndefValue to
guess known bits.  Return early to avoid walking their use-lists, and
assert that all instances of ConstantData are handled here for similar
reasons (UndefValue was the only integer/pointer holdout).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282337 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[x86] don't try to create a vector integer inst for an SSE1 target (PR30512)
Sanjay Patel [Sat, 24 Sep 2016 20:24:06 +0000 (20:24 +0000)]
[x86] don't try to create a vector integer inst for an SSE1 target (PR30512)

This bug was introduced with:
http://reviews.llvm.org/rL272511

We need to restrict the lowering to v4f32 comparisons because that's all SSE1 can handle.

This should fix:
https://llvm.org/bugs/show_bug.cgi?id=28044

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282336 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoScalar: Ignore ConstantData in processAssumption
Duncan P. N. Exon Smith [Sat, 24 Sep 2016 20:00:38 +0000 (20:00 +0000)]
Scalar: Ignore ConstantData in processAssumption

Assumptions on UndefValue and ConstantPointerNull aren't relevant to
other users.  Ignore them entirely to avoid wasting cycles walking
through their (possibly extremely extensive (cross-module)) use-lists.

It wasn't clear how to add a specific test for this, and it'll be
covered anyway by an eventual patch that asserts when trying to access
the use-list of an instance of ConstantData.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282334 91177308-0d34-0410-b5e6-96231b3b80d8

7 years agoAnalysis: Return early in isKnownNonNullAt for ConstantData
Duncan P. N. Exon Smith [Sat, 24 Sep 2016 19:39:47 +0000 (19:39 +0000)]
Analysis: Return early in isKnownNonNullAt for ConstantData

Check and return early for ConstantPointerNull and UndefValue
specifically in isKnownNonNullAt, and assert that ConstantData never
make it to isKnownNonNullFromDominatingCondition.

This confirms that isKnownNonNullFromDominatingCondition never walks
through the use-list of an instance of ConstantData.  Given that such
use-lists cross module boundaries, it never really made sense to do so,
and was potentially very expensive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282333 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[AVR] Update signature of AVRTargetObjectFile::SelectSectionForGlobal
Dylan McKay [Sat, 24 Sep 2016 11:38:08 +0000 (11:38 +0000)]
[AVR] Update signature of AVRTargetObjectFile::SelectSectionForGlobal

It was changed recently, and was breaking compilation of the backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282329 91177308-0d34-0410-b5e6-96231b3b80d8

7 years ago[RegisterBankInfo] Constify the member of the XXXMapping maps.
Quentin Colombet [Sat, 24 Sep 2016 04:54:03 +0000 (04:54 +0000)]
[RegisterBankInfo] Constify the member of the XXXMapping maps.

This makes it obvious that items in those maps behave like statically
created objects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282327 91177308-0d34-0410-b5e6-96231b3b80d8