when they are call edges at the leaf but may (transitively) be reached
via ref edges.

It turns out there is a simple rule: insert everything as a ref edge
which is a safe conservative default. Then we let the existing update
logic handle promoting some of those to call edges.

Note that it would be fairly cheap to make these call edges right away
if that is desirable by testing whether there is some existing call path
from the source to the target. It just seemed like slightly more
complexity in this code path that isn't strictly necessary. If anyone
feels strongly about handling this differently I'm happy to change it.

llvm-svn: 290649

[InstCombine] Remove a piece of a comment that said that InstCombiner contains pass infrastructure. That hasn't been true since r226618. NFC

llvm-svn: 290648

to make reference to template parameters. This is only a partial
implementation; we retain the restriction that the argument must not be
type-dependent, since it's unclear how that would work given the existence of
other language rules requiring an exact type match in this context, even for
type-dependent cases (a question has been raised on the core reflector).

llvm-svn: 290647

r290644. Sorry for this.

llvm-svn: 290646

due to a call cycle.

This actually crashed the ref removal before.

I've added a unittest that covers this kind of interesting graph
structure and mutation.

llvm-svn: 290645

currenty relies on the old PM's dependency system forming LCSSA.

The new PM will require a different design for this, and for now this is
causing most of the issues I'm currently seeing in testing. I'd like to
get to a testable baseline and then work on re-enabling things one at
a time.

llvm-svn: 290644

Summary:
Reduce RSS size treshold in the unit test to accomodate for the smaller
ASAN quarantine size on Android (see D27873).

Reviewers: eugenis

Patch by Alex Shlyapnikov.

Subscribers: danalbert, kubabrecka, llvm-commits

Differential Revision: https://reviews.llvm.org/D28132

llvm-svn: 290643

llvm-svn: 290642

This adds a combine that canonicalizes a chain of inserts which broadcasts
a value into a single insert + a splat shufflevector.

This fixes PR31286.

Differential Revision: https://reviews.llvm.org/D27992

llvm-svn: 290641

[libFuzzer] add an experimental flag -experimental_len_control=1 that sets max_len to 1M and tries to increases the actual max sizes of mutations very gradually (second attempt)

llvm-svn: 290637

llvm-svn: 290636

llvm-svn: 290635

llvm-svn: 290634

llvm-svn: 290633

llvm-svn: 290632

This seems like it must've been a leftover by accident - no tests were
backing it up & it doesn't make much sense to include size/alignment on
class declarations (it'd only be on those declarations for which the
definition was available - otherwise the size/alignment would not be
known).

llvm-svn: 290631

llvm-svn: 290630

llvm-svn: 290629

llvm-svn: 290628

llvm-svn: 290627

[compiler-rt] Move logic which replace memcpy interceptor with memmove from asan to sanitizer_common.

Reviewers: eugenis

Subscribers: kubabrecka, dberris, llvm-commits

Differential Revision: https://reviews.llvm.org/D28074

llvm-svn: 290626

Add warning flag for "partial specialization is not more specialized than primary template" error (since Eigen hits it), and while I'm here also add a warning flag for "partial specialization is not usable because one or more of its parameters cannot be deduced" warning.

llvm-svn: 290625

llvm-svn: 290624

llvm-svn: 290623

[libFuzzer] fix UB and simplify the computation of the RNG seed (https://llvm.org/bugs/show_bug.cgi?id=31456)

llvm-svn: 290622

Reviewers: ahatanak, eugenis, myatsina

Subscribers: kubabrecka, zizhar, llvm-commits

Differential Revision: https://reviews.llvm.org/D28128

llvm-svn: 290621

analysis handles become invalid.

Add a test case for its invalidation logic.

llvm-svn: 290620

Added \n commands to insert a line breaks where necessary, since one long line of documentation is nearly unreadable.
Formatted comments to fit into 80 chars.
In some cases added \a command in front of the parameter names to display them in italics.

llvm-svn: 290619

Fix a warning detected by gcc 6:
  warning: cast from type 'const void*' to type 'uint8_t* {aka unsigned char*}' casts away qualifiers [-Wcast-qual]

llvm-svn: 290618

Convert the verify method to use a few more range based for loops,
converting to const iterators in the process.

llvm-svn: 290617

Replace the use of grep with FileCheck.  Tidy up some of the tests.  A
few of the tests have been left as weak as previously, though some have
been made more stringent.

llvm-svn: 290616

llvm-svn: 290615

There is no need to do this within an analysis. That method shouldn't
even be reached if this predicate holds as the actual useful
optimization is in the analysis manager itself.

llvm-svn: 290614

llvm-svn: 290613

BasicAA in r290603.

I've kept the basic testing in the new PM test file as that also covers
the AAManager invalidation logic. If/when there is a good place for
broader AA testing it could move there.

This test is somewhat unsatisfying as I can't get it to fail even with
ASan outside of explicit checks of the invalidation. Apparently we don't
yet have any test coverage of the BasicAA code paths using either the
domtree or loopinfo -- I made both of them always be null and check-llvm
passed.

llvm-svn: 290612

Differential Revision: https://reviews.llvm.org/D26811

llvm-svn: 290611

The effect of the bug was that we would incorrectly create summaries
for global and weak values defined in module asm (since we were
essentially testing for bit 1 which is SF_Undefined, and the
RecordStreamer ignores local undefined references). This would have
resulted in conservatively disabling importing of anything referencing
globals and weaks defined in module asm. Added these cases to the test
which now fails without this bug fix.

Fixes PR31459.

llvm-svn: 290610

Differential Revision: https://reviews.llvm.org/D27953

llvm-svn: 290609

The feature allows for conditional assembly, filling the entries
of .amd_kernel_code_t etc.

Symbols are defined with value 0 at the beginning of each kernel scope.
After each register usage, the respective symbol is set to:
	value = max( value, ( register index + 1 ) )
Thus, at the end of scope the value represents a count of used registers.

Kernel scopes begin at .amdgpu_hsa_kernel directive, end at the
next .amdgpu_hsa_kernel (or EOF, whichever comes first). There is also
dummy scope that lies from the beginning of source file til the
first .amdgpu_hsa_kernel.

Test added.

Differential Revision: https://reviews.llvm.org/D27859

llvm-svn: 290608

Because operand was not marked as seen it was visited twice.
It doesn't change behavior of optimization, it just saves redudant
visit, so no test changes.

llvm-svn: 290607