Patch by Daniel Liew <daniel.liew@imperial.ac.uk>!

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Update clang to use the InstrProfReader from LLVM to read
instrumentation based profile data. This also switches us from the
naive text format to the binary format, since that's what's
implemented in the reader.

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When transferring data from a CompilerInstance in an error path we need
to consider cases where the various fields are uninitialized.

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This paves the way to making OnDiskHashTable work with hashes that are
not 32 bits wide and to making OnDiskHashTable work very large hash
tables. The LLVM change to use these types is upcoming.

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Also, intentionally duplicate base class definitions per test, so it's easier to copy tests while debugging failures

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This is one of those DarwinPCS differences. It'd been caught in
arguments, but not return values.

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Another AAPCS bug, part of PR19432.

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0x80000000 isn't representable as an int, which is the default enum
type.

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The frontend option -fno-optimize-sibling-calls resolves to -cc1's
-mdisable-tail-calls, which is passed to the TargetMachine in the
backend.  PassManagerBuilder was adding the -tailcallelim pass anyway.

Use a new DisableTailCalls option in PassManagerBuilder to disable tail
calls harder.

Requires the matching commit in LLVM that adds DisableTailCalls.

<rdar://problem/16050591>

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In preparation for using a binary format for instrumentation based
profiling, explicitly treat the test inputs as text and transform them
before running. This will allow us to leave the checked in files in
human readable format once the instrumentation format is binary.

No functional change.

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This was probably a benign bug, since nobody would look at the vbtable
slots that we were filling in.

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Reviewed at http://reviews.llvm.org/D3410

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Making some public members into private members. This also introduces a bit more const-correctness, and now uses some range-based for loops. No functional changes intended.

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Nitpicky refactoring -- use of nullptr and auto, made a bit more const-correct. No functional changes intended.

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This reverts r172072.  clang-format used to use DiagnosticEngine to output
errors: http://llvm.org/viewvc/llvm-project?view=revision&revision=172071. Now
it doesn't, so this code is obsolete.


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Getting a pointer into a struct at a non-zero offset would try to
use the default address space.

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Summary:
This patch ensures that the lines of the block comments retain relative
column offsets. In order to do this WhitespaceManager::Changes representing
continuation of block comments keep a pointer on the change representing the
whitespace change before the block comment, and a relative column offset to this
change, so that the correct column can be reconstructed at the end of alignment
process.

Fixes http://llvm.org/PR19325

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://reviews.llvm.org/D3408

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Since the object is new'ed in the enterCFG function, now deleting in the exitCFG function instead of the destructor to ensure proper pairing. This allows reuse of the builder without creating a memory leak.

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Change an expected match to allow for the fact that some targets
may not generated the zeroext operation.


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This covers all tests in tests/Driver and tests/Preprocessor, but there are some
failing tests in test/Sema that need looking into.

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Preventing future MSVC 2012 surprises with SimpleArray by giving it an explicit move assignment operator.

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With BinPackParameters=false and Cpp11BracedListStyle=true (i.e. mostly
for Chromium):

Before:
  const Aaaaaa aaaaa = {aaaaa, bbbbb,  ccccc,  ddddd,  eeeee, ffffff,
                        ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk};

After:
  const Aaaaaa aaaaa = {aaaaa,
                        bbbbb,
                        ccccc,
                        ddddd,
                        eeeee,
                        ffffff,
                        ggggg,
                        hhhhhh,
                        iiiiii,
                        jjjjjj,
                        kkkkkk};

This fixes llvm.org/PR19359. I am not sure we'll want this in all cases
in the long run, but I'll guess we'll get feedback on that.

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Also fix a few other vtordisp-related bugs.

Reviewed at http://reviews.llvm.org/D3400

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My first attempt to make sure HFAs were contiguous was in the block dealing
with padding registers, which meant it only triggered on the first stack-based
HFA. This should extend it to the rest as well.

Another part of PR19432.

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  clang\lib\Sema\SemaTemplate.cpp(1826) : error C2064: term does not evaluate to a function taking 1 arguments

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that looks like it might be an explicit specialization, don't recover as an
explicit specialization (bypassing the check that would reject that).


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The YAMLParser has its own escaped string representation, and does not
handle octal escape sequences. When writing the virtual file system to a
YAML file, use yaml::escape().

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