llvm-svn: 109433

llvm-svn: 109431

llvm-svn: 109430

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: 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

llvm-svn: 109412

llvm-svn: 109411

llvm-svn: 109410

llvm-svn: 109409

don't visit all blocks in the function, and don't iterate over the split blocks'
predecessor lists for each block visited.

Also, remove the special-case test for the entry block. Splitting the entry
block isn't common enough to make this worthwhile.

This fixes a major compile-time bottleneck which is exposed now that
LoopSimplify isn't being redundantly run both before and after
DominanceFrontier.

llvm-svn: 109408

llvm-svn: 109407

llvm-svn: 109405

llvm-svn: 109404

llvm-svn: 109403

llvm-svn: 109402

explicit inequality check.

llvm-svn: 109401

llvm-svn: 109400

explicit inequality check.

llvm-svn: 109398

may be used uninitialized in the callers of HighRegPressure.

llvm-svn: 109393

llvm-svn: 109391

A Visual C++ extension that removes trailing new lines? Seriously?

llvm-svn: 109390

Origonal Windows COFF implementation by Nathan Jedffords.

llvm-svn: 109389

llvm-svn: 109388

ReduceMiscompilingFunctions::TestFuncs. This makes the test functional
(i.e., no side effects).

Before we would end up using dead functions if a pass decided to remove them
(inline for example) and we would also keep broken functions and conclude that
that a single function was enough to reproduce the bug.

llvm-svn: 109387

llvm-svn: 109386

accept the flag and do nothing but warn about it, cleverly bypassing our
configure-based detection system. Patch by Takumi Nakamura!

llvm-svn: 109385

llvm-svn: 109383

llvm-svn: 109373

llvm-svn: 109372

those.  Radar 8231572.

llvm-svn: 109367

invalid type.

llvm-svn: 109365

llvm-svn: 109364