When a python script is run, by default it creates the bytecode file if the directory is writable, and this ‘pollutes’ source folders.

From python's help:
-B Don’t write .py[co] files on import. See also PYTHONDONTWRITEBYTECODE.

Patch by Pere Mato (D30604)!

llvm-svn: 298603

Summary: ThinLTO will annotate the CFG twice. If the branch weight is set by the first annotation, we should not set the branch weight again in the second annotation because the first annotation is more accurate as there is less optimization that could affect debug info accuracy.

Reviewers: tejohnson, davidxl

Reviewed By: tejohnson

Subscribers: mehdi_amini, aprantl, llvm-commits

Differential Revision: https://reviews.llvm.org/D31228

llvm-svn: 298602

Summary: Cleanup some remnants of code from when the X86FixupBWInsts pass did both forward liveness analysis and backward liveness analysis.

Reviewers: MatzeB, myatsina, DavidKreitzer

Reviewed By: MatzeB

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31264

llvm-svn: 298599

This patch fixes emitting of correct variant of DINS instruction.

Differential Revision: https://reviews.llvm.org/D30988

llvm-svn: 298596

Pull out mask elements at the start, allowing us to make the widening pattern matching more readable.

llvm-svn: 298594

This patch fixes decoding of size and position for DINSM
and DINSU instructions.

Differential Revision: https://reviews.llvm.org/D31072

llvm-svn: 298593

llvm-svn: 298592

llvm-svn: 298590

Up until now, vpmovm2 instruction described its destination operand size
by the source operand size. This patch adds new pattern for the vpmovm2
instruction. The node describes new expansion of the destination (from
{128|256} to 512).

Differential Revision: https://reviews.llvm.org/D30654

llvm-svn: 298586

llvm-svn: 298584

llvm-svn: 298583

Summary:
We currently do a linear scan through all of the Alignments array entries anytime getAlignmentInfo is called. I noticed while profiling compile time on a -O2 opt run that this function can be called quite frequently and was showing about as about 1% of the time in callgrind.

This patch puts the Alignments array into a sorted order by type and then by bitwidth. We can then do a binary search. And use the sorted nature to handle the special cases for INTEGER_ALIGN. Some of this is modeled after the sorting/searching we do for pointers already.

This reduced the time spent in this routine by about 2/3 in the one compilation I was looking at.

We could maybe improve this more by using a DenseMap to cache the results, but just sorting was easy and didn't require extra data structure. And I think it made the integer handling simpler.

Reviewers: sanjoy, davide, majnemer, resistor, arsenm, mehdi_amini

Reviewed By: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: https://reviews.llvm.org/D31232

llvm-svn: 298579

llvm-svn: 298578

llvm-svn: 298572

Summary:
This removes the 'remapTypeIndices' method on every TypeRecord class. My
original idea was that this would be the beginning of some kind of
generic entry point that would enumerate all of the TypeIndices inside
of a TypeRecord, so that we could write generic graph algorithms for
them without duplicating the knowledge of which fields are type index
fields everywhere. This never happened, and nothing else uses this
method. I need to change the API to deal with merging into IPI streams,
so let's move it into the file that uses it first.

Reviewers: zturner, ruiu

Reviewed By: zturner, ruiu

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D31267

llvm-svn: 298564

llvm-svn: 298563

The UB in t2_so_imm_neg conversion has been addressed under D31242 / r298512

This reverts commit r298482.

llvm-svn: 298562

  - It was decided to expose this information through other means (rocr)

Differential Revision: https://reviews.llvm.org/D30970

llvm-svn: 298560

llvm-svn: 298559

Differential Revision: https://reviews.llvm.org/D30969

llvm-svn: 298558

  - These are not required for low level runtime

Differential Revision: https://reviews.llvm.org/D29949

llvm-svn: 298556

llvm-svn: 298555

llvm-svn: 298553

  - Rename runtime metadata -> code object metadata
  - Make metadata not flow
  - Switch enums to use ScalarEnumerationTraits
  - Cleanup and move AMDGPUCodeObjectMetadata.h to AMDGPU/MCTargetDesc
  - Introduce in-memory representation for attributes
  - Code object metadata streamer
  - Create metadata for isa and printf during EmitStartOfAsmFile
  - Create metadata for kernel during EmitFunctionBodyStart
  - Finalize and emit metadata to .note during EmitEndOfAsmFile
  - Other minor improvements/bug fixes

Differential Revision: https://reviews.llvm.org/D29948

llvm-svn: 298552

Differential Revision: https://reviews.llvm.org/D31258

llvm-svn: 298551

The synthetic thunk for the import is prefixed with __imp_.  Attempt to
undecorate the names when they begin with the __imp_ prefix.

llvm-svn: 298550

[libFuzzer] add two experimental flags to make corpus merging more scalable: -save_coverage_summary/-load_coverage_summary. This is still WIP, the documentation will come later if these flags survive

llvm-svn: 298548

Summary:
Adding a printer pass for printing the LVI cache values after transformations
that use LVI.
This will help us in identifying cases where LVI
invariants are violated, or transforms that leave LVI in an incorrect state.
Right now, I have added two test cases to show that the printer pass is working.
I will be adding more test cases in a later change, once this change is
checked in upstream.

Reviewers: reames, dberlin, sanjoy, apilipenko

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30790

llvm-svn: 298542

Summary:
https://llvm.org/bugs/show_bug.cgi?id=31142 :

SROA was dropping the nonnull metadata on loads from allocas that got optimized out. This patch simply preserves nonnull metadata on loads through SROA and mem2reg.

Reviewers: chandlerc, efriedma

Reviewed By: efriedma

Subscribers: hfinkel, spatel, efriedma, arielb1, davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D27114

llvm-svn: 298540

Pass const qualified summaries into importers and unqualified summaries into
exporters. This lets us const-qualify the summary argument to thinBackend.

Differential Revision: https://reviews.llvm.org/D31230

llvm-svn: 298534

Add a const version of the getTypeIdSummary accessor that avoids
mutating the TypeIdMap.

Differential Revision: https://reviews.llvm.org/D31226

llvm-svn: 298531

llvm-svn: 298528

llvm-svn: 298523

llvm-svn: 298521

insertelement (insertelement X, Y, IdxC1), ScalarC, IdxC2 -->
insertelement (insertelement X, ScalarC, IdxC2), Y, IdxC1

As noted in the code comment and seen in the test changes, the motivation is that by pulling
constant insertion up, we may be able to constant fold some insertelement instructions.

Differential Revision: https://reviews.llvm.org/D31196

llvm-svn: 298520

Also add an assertion for the case that there are multiple FI
expressions with a DW_OP_LLVM_fragment; which should violate internal
constraints in DbgVariable.

llvm-svn: 298518

It's possible (albeit strange) for $HOME to intentionally
point somewhere other than the user's home directory as
reported by the password database.  Our test shouldn't fail
in this case.  This patch updates the test to pull directly
from the password database before unsetting $HOME, rather
than comparing the return value of home_directory() to the
original value of the environment variable.

llvm-svn: 298514

This is something of an edge case, but when the $HOME environment
variable is not set, we can still look in the password database
to get the current user's home directory.

Added a test for this by getting the value of $HOME, then unsetting
it, then calling home_directory() and verifying that it succeeds
and that the value is the same as what we originally read from
the environment.

llvm-svn: 298513

[ARM] t2_so_imm_neg had a subtle bug in the conversion, and could trigger UB by negating (int)-2147483648. By pure luck, none of the pre-existing tests triggered this; so I'm adding one.

Summary: Thanks to Vitaly Buka for helping catch this.

Reviewers: rengolin, jmolloy, efriedma, vitalybuka

Subscribers: llvm-commits, aemerson

Differential Revision: https://reviews.llvm.org/D31242

llvm-svn: 298512

This matches gas behavior and is part of pr31888.

llvm-svn: 298508