llvm-svn: 290655

llvm-svn: 290654

llvm-svn: 290653

llvm-svn: 290652

This patch implements changes to allow _LIBCPP_ASSERT to throw on failure
instead of aborting. The main changes needed to do this are:

1. Change _LIBCPP_ASSERT to call a handler via a replacable function pointer
   instead of calling abort directly. Additionally this patch implements two
   handler functions, one which aborts and another that throws an exception.

2. Add _NOEXCEPT_DEBUG macro for disabling noexcept spec on function which
   contain _LIBCPP_ASSERT. This is required in order to prevent assertion
   failures throwing through a noexcept function. This macro has no effect
   unless _LIBCPP_DEBUG_USE_EXCEPTIONS is defined.

Having a non-aborting _LIBCPP_ASSERT is very important to allow sane testing of
debug mode. Currently we can only have one test case per file, since the test
case will cause the program to abort. Testing debug mode this way would require
thousands of test files, most of which would be 95% boiler plate. I don't think
this is a feasible strategy. Fortunately using a throwing debug handler solves
these issues.

Additionally this patch rewrites the documentation for debug mode.

llvm-svn: 290651

Summary:
All easy-to-find bugs in cxa_demangle where fixed now
(https://bugs.chromium.org/p/chromium/issues/detail?id=606626)
except for one (https://llvm.org/bugs/show_bug.cgi?id=31031).
Now I'd like to properly integrate this fuzzer with the source tree
and then run the fuzzer continuously on https://github.com/google/oss-fuzz

Reviewers: compnerd, mclow.lists, mehdi_amini

Subscribers: cfe-commits, mgorny

Differential Revision: https://reviews.llvm.org/D28133

llvm-svn: 290650

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