diagnostics to improve gcc compatibility; useful for dejagnu testing.

llvm-svn: 70278

llvm-svn: 70277

llvm-svn: 70275

- Add 'LoopTarget' pointer field to CFGBlock. This records if the block is used
  as the 'loop back' path back to the head of a loop.
- For ForStmt, encode the loop back target as the increment code.

llvm-svn: 70274

that if we're going to print an extension warning anyway, 
there's no point to changing behavior based on NoExtensions: it will 
only make error recovery worse.

Note that this doesn't cause any behavior change because NoExtensions 
isn't used by the current front-end.  I'm still considering what to do about
the remaining use of NoExtensions in IdentifierTable.cpp.

llvm-svn: 70273

use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'm not 100% sure if it's necessary to change it there...

llvm-svn: 70270

builds to work (PR4088).

llvm-svn: 70269

llvm-svn: 70268

llvm-svn: 70266

Clang version value rather than hard-coding "1.0".

Add PCH and Clang version information into the PCH file. Reject PCH
files with the wrong version information.

llvm-svn: 70264

llvm-svn: 70263

llvm-svn: 70262

llvm-svn: 70259

processing to after PCH is loaded.  -Eonly and -parse-noop are close to working
with PCH now but are not quite there yet.

llvm-svn: 70257

llvm-svn: 70256

ignore a PCH file.

llvm-svn: 70251

llvm-svn: 70250

 - Forces input file to be empty to time startup/shutdown costs.

llvm-svn: 70249

llvm-svn: 70248

llvm-svn: 70247

llvm-svn: 70245

between the comparison's iv stride and the candidate stride is
exactly -1.

llvm-svn: 70244

the comparison operators were not only unnecessary in the presence of the
implicit conversion; they caused ambiguous overload errors. So I deleted them.

llvm-svn: 70243

Improve validation of C++ exception handling: diagnose throwing incomplete types and jumps into protected try-catch scopes.

llvm-svn: 70242

information to simplify [sz]ext({a,+,b}) to {zext(a),+,[zs]ext(b)},
as appropriate.

These functions and the trip count code each call into the other, so
this requires careful handling to avoid infinite recursion. During
the initial trip count computation, conservative SCEVs are used,
which are subsequently discarded once the trip count is actually
known.

Among other benefits, this change lets LSR automatically eliminate
some unnecessary zext-inreg and sext-inreg operation where the
operand is an induction variable.

llvm-svn: 70241

Add Sema::ExtVectorDecls and Sema::ObjCCategoryImpls to the PCH file. Since these vectors are very, very rarely used and, when used in headers, and even when used are relatively small, we load them eagerly.

llvm-svn: 70240

only llvm-bcanalyzer wants this info.

llvm-svn: 70239

This should have no effect on generated code, but makes the intermediate state
of the coalescer more sane.

llvm-svn: 70238

'objc_ownership_cfrelease'. These are the 'release' equivalents of
'objc_ownership_retain' and 'objc_ownership_cfretain' respectively.

llvm-svn: 70235

no-longer needed workarounds.

llvm-svn: 70234

llvm-svn: 70233

treated as "not owned" objects.

llvm-svn: 70232

llvm-svn: 70229

entries, shaving 100K off the PCH file for cocoa.

llvm-svn: 70228

llvm-svn: 70227

llvm-svn: 70226

PR2957

ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask.  A value of -1 represents UNDEF.

In addition to eliminating the creation of illegal BUILD_VECTORS just to 
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.

llvm-svn: 70225

HandleObjCOwnershipParmAttr. No functionality change (hopefully).

llvm-svn: 70224

essentially the same thing we do with pretokenized headers. stat()
caching improves performance of the Cocoa-prefixed "Hello, World" by
45%.

llvm-svn: 70223

member.

Also, spell bitfield more consistently as bit-field.

llvm-svn: 70220