llvm-svn: 112321

llvm-svn: 112320

llvm-svn: 112319

llvm-svn: 112318

llvm-svn: 112317

llvm-svn: 112316

llvm-svn: 112315

A = shl x, 42
...
B = lshr ..., 38

which can be transformed into:
A = shl x, 4
...

iff we can prove that the would-be-shifted-in bits
are already zero.  This eliminates two shifts in the testcase
and allows eliminate of the whole i128 chain in the real example.

llvm-svn: 112314

Added checking of (x == x) and (x != x) to IdempotentOperationChecker and updated test cases flagged by it.

llvm-svn: 112313

Enabled relaxed LiveVariables analysis in the path-sensitive engine to increase the coverage of bugs. Primarily affects IdempotentOperationChecker.
- Migrated a temporarily separated test back to its original file (bug has been fixed, null-deref-ps-temp.c -> null-deref-ps.c)
- Changed SymbolManager to use relaxed LiveVariables
- Updated several test cases that the IdempotentOperationChecker class now flags
- Added test case to test relaxed LiveVariables use by the IdempotentOperationChecker

llvm-svn: 112312

llvm-svn: 112311

llvm-svn: 112310

llvm-svn: 112309

o Fixed a crasher when getting it via SBTarget.GetExecutable().

>>> filespec = target.GetExecutable()
Segmentation fault

o And renamed SBFileSpec::GetFileName() to GetFilename() to be consistent with FileSpec::GetFilename().

llvm-svn: 112308

llvm-svn: 112307

Add alternate version of LiveVariables analysis that does not kill liveness at assignments. This 'relaxed' liveness is useful in path sensitive analysis for situations where the resulting extended liveness allows us to find some bugs.
- Added killAtAssign flag to LiveVariables
- Added relaxed LiveVariables to AnalysisContext with an accessor

llvm-svn: 112306

llvm-svn: 112305

framework, which is good at ripping through bitfield
operations.  This generalize a bunch of the existing
xforms that instcombine does, such as 
  (x << c) >> c -> and
to handle intermediate logical nodes.  This is useful for
ripping up the "promote to large integer" code produced by
SRoA.

llvm-svn: 112304

llvm-svn: 112303

llvm-svn: 112302

swaps on the variable list, value object list, and disassembly. This avoids
us having to try and update frame indexes and other things that were getting
out of sync.

llvm-svn: 112301

llvm-svn: 112300

adjacent operands at once, instead of just two at a time.

llvm-svn: 112299

Improve wording of diagnostic complaining about a non-void* pointer as the first parameter of operator delete

llvm-svn: 112298

Patch by Cameron Esfahani!

llvm-svn: 112297

Implement CXCursor support for walking C++ base specifiers.  This includes adding the API hooks clang_isVirtualBase() and clang_getCXXAccessSpecifier() to query properties of the base specifier.

Implements <rdar://problem/8274883>.

llvm-svn: 112296

llvm-svn: 112295

member function you're typing in overrides another virtual function,
this fills in a (qualified!) call to that virtual function to make
such delegation easy.

llvm-svn: 112294

llvm-svn: 112293

llvm-svn: 112292

more general simplify demanded bits logic.

llvm-svn: 112291

transformation collect all the addrecs with the same loop
add combine them at once rather than starting everything over
at the first chance.

llvm-svn: 112290

llvm-svn: 112289

llvm-svn: 112288

llvm-svn: 112287

llvm-svn: 112286

computation can be truncated if it is fed by a sext/zext that doesn't
have to be exactly equal to the truncation result type.

llvm-svn: 112285

llvm-svn: 112284

llvm-svn: 112283

we don't see a DeclStmt (failure to instantiate which generally causes
panic).

llvm-svn: 112282