llvm-svn: 109468

if it hs side-effect to matchgcc's behaviour.
Addresses radar 8172109.

llvm-svn: 109467

llvm-svn: 109464

I knew this code duplication would bite me.

llvm-svn: 109463

llvm-svn: 109462

llvm-svn: 109458

llvm-svn: 109456

frame state after running a function.  This
caused nondeterministic crashes in the expression
evaluation code.

llvm-svn: 109454

llvm-svn: 109452

exception handling.  Also fix an extra underscore typo in one instance of
"__ARM_EABI__".  Radar 8236264.

llvm-svn: 109451

llvm-svn: 109450

The "excess register pressure" returned by HighRegPressure() is not accurate enough to factor into scheduling priority. Eliminate it and add early exits to speed up scheduling.

llvm-svn: 109449

llvm-svn: 109448

llvm-svn: 109447

reparsing an ASTUnit. When saving a preamble, create a buffer larger
than the actual file we're working with but fill everything from the
end of the preamble to the end of the file with spaces (so the lexer
will quickly skip them). When we load the file, create a buffer of the
same size, filling it with the file and then spaces. Then, instruct
the lexer to start lexing after the preamble, therefore continuing the
parse from the spot where the preamble left off.

It's now possible to perform a simple preamble build + parse (+
reparse) with ASTUnit. However, one has to disable a bunch of checking
in the PCH reader to do so. That part isn't committed; it will likely
be handled with some other kind of flag (e.g., -fno-validate-pch).

As part of this, fix some issues with null termination of the memory
buffers created for the preamble; we were trying to explicitly
NULL-terminate them, even though they were also getting implicitly
NULL terminated, leading to excess warnings about NULL characters in
source files.

llvm-svn: 109445

llvm-svn: 109443

to deleting it.

llvm-svn: 109441

llvm-svn: 109440

llvm-svn: 109438

Also, don't link in all the clang libraries statically.

llvm-svn: 109436

llvm-svn: 109435

we are using AVX and no AVX version of the desired intruction is present,
this is better for incremental dev (without fallbacks it's easier to spot
what's missing). Not sure this is the best hack thought (we can also disable
all HasSSE* predicates by dinamically marking them 'false' if AVX is present)

llvm-svn: 109434

llvm-svn: 109433

llvm-svn: 109431

llvm-svn: 109430

llvm-svn: 109429

string argument type checking.

llvm-svn: 109428

llvm-svn: 109427

llvm-svn: 109426

Simplifying use_iterators by dereferencing
is not a good idea. The codebase does not depend
in this any more, and it may introduce hidden
runtime cost. If you get compile errors, please
dereference your iterator before passing to cast<>
(and friends).

Also: please consider caching the result of
operator* and reusing that instead of dereferencing
many times.

llvm-svn: 109425

llvm-svn: 109424

This assumption is not satisfied due to global mergeing.
Workaround the issue by temporary disablinge mergeing of const globals.
Also, ignore LLVM "special" globals. This fixes PR7716

llvm-svn: 109423

llvm-svn: 109422

llvm-svn: 109421

llvm-svn: 109420

it inserted rather than using LoopInfo::getCanonicalInductionVariable to
rediscover it, since that doesn't work on non-canonical loops. This fixes
infinite recurrsion on such loops; PR7562.

llvm-svn: 109419

llvm-svn: 109416

llvm-svn: 109415

llvm-svn: 109414

dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier
pass in StandardPasses.h to ensure that it gets scheduled at the right
time.

Declare that loop unrolling preserves ScalarEvolution, and shuffle some
getAnalysisUsages.

This eliminates one LoopSimplify and one LCCSA run in the standard
compile opts sequence.

llvm-svn: 109413