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

as 'objc_ownership_cfretain' except that the method acts like a CFRetain instead
of a [... retain] (important in GC modes). Checker support is wired up, but
currently only for Objective-C message expressions (not function calls).

llvm-svn: 70218

llvm-svn: 70217

of 64 bits.  This cuts 400KB off the PCH file for cocoa (7.1 -> 
6.7MB):

Before:

	Record Histogram:
		  Count    # Bits   % Abv  Record Kind
		      1     14296          SOURCE_LOCATION_PRELOADS
		      1   1699598  100.00  SOURCE_LOCATION_OFFSETS
		      1   1870766  100.00  METHOD_POOL
		      1    212988  100.00  SELECTOR_OFFSETS
		      1        88          STATISTICS
		      1       106          SPECIAL_TYPES
		      1  18033788  100.00  IDENTIFIER_TABLE
		      1   1806428  100.00  IDENTIFIER_OFFSET
		      1       170  100.00  TARGET_TRIPLE
		      1       268          LANGUAGE_OPTIONS
		      1   5168252  100.00  DECL_OFFSET
		      1    952700  100.00  TYPE_OFFSET

After:

	Record Histogram:
		  Count    # Bits   % Abv  Record Kind
		      1     14296          SOURCE_LOCATION_PRELOADS
		      1   1699598  100.00  SOURCE_LOCATION_OFFSETS
		      1   1870766  100.00  METHOD_POOL
		      1    212988  100.00  SELECTOR_OFFSETS
		      1        88          STATISTICS
		      1       106          SPECIAL_TYPES
		      1  18033788  100.00  IDENTIFIER_TABLE
		      1   1806428  100.00  IDENTIFIER_OFFSET
		      1       170  100.00  TARGET_TRIPLE
		      1       268          LANGUAGE_OPTIONS
		      1   2584156  100.00  DECL_OFFSET
		      1    476380  100.00  TYPE_OFFSET

llvm-svn: 70216

and % abbreviated.  For example:

	Record Histogram:
		  Count    # Bits   % Abv  Record Kind
		  25738   3424174  100.00  SM_SLOC_INSTANTIATION_ENTRY
		    814    562079  100.00  SM_SLOC_FILE_ENTRY
		    798     34110          SM_HEADER_FILE_INFO
		      3     91104  100.00  SM_SLOC_BUFFER_BLOB
		      3       498  100.00  SM_SLOC_BUFFER_ENTRY
		      1       465          SM_LINE_TABLE

llvm-svn: 70215

instead of ostreams for formatting.

llvm-svn: 70214

Fix PR4056. It's possible a physical register def is dead if its implicit use is deleted by two-address pass.

llvm-svn: 70213

llvm-svn: 70212

to precisely describe the h-register subreg register classes.
Thanks to Jakob Stoklund Olesen for spotting this and for the
initial patch!

Also, make getStoreRegOpcode and getLoadRegOpcode aware of the
needs of h registers.

llvm-svn: 70211

GR32_ABCD, and GR64_ABCD, respectively, to help describe them.

llvm-svn: 70210

llvm-svn: 70209

llvm-svn: 70208

building without optimization and building with checking.

llvm-svn: 70205

parm var decls in leopard cocoa.h end up using this abbreviation,
which shrinks the bitcode file by about 50K: 7217736->7167120.

Before:
  Block ID #12 (DECLS_BLOCK):
      Num Instances: 1
         Total Size: 2.23595e+07b/2.79494e+06B/698736W
          % of file: 38.7233
      Num SubBlocks: 0
        Num Abbrevs: 0
        Num Records: 139387
      % Abbrev Recs: 0

After:
  Block ID #12 (DECLS_BLOCK):
      Num Instances: 1
         Total Size: 2.02405e+07b/2.53006e+06B/632516W
          % of file: 35.301
      Num SubBlocks: 0
        Num Abbrevs: 1
        Num Records: 139387
      % Abbrev Recs: 19.2902

llvm-svn: 70199

of the normal stream cursor.

llvm-svn: 70198

llvm-svn: 70197

file. In particular, only eagerly load source location entries for
files and for the predefines buffer. Other buffers and
macro-instantiation source location entries are loaded lazily.

With the Cocoa-prefixed "Hello, World", we only load 815/26555 source
location entities. This halves the amount of user time we spend in
this "Hello, World" program with -fsyntax-only (down to .007s).

This optimization is part 1 of 2 for the source manager. This
eliminates most of the user time in loading a PCH file. We still spend
too much time initialize File structures (especially in the calls to
stat), so we need to either make the loading of source location
entries for files lazy or import the stat cache from the PTH
implementation.

llvm-svn: 70196

llvm-svn: 70194

llvm-svn: 70193

llvm-svn: 70192

extraneous braces.

llvm-svn: 70191

from the DeclsCursor.

llvm-svn: 70190

is part of a decl.

llvm-svn: 70189