Patch by Alexei Svitkine: Refactor Sema::ParseAST API to allow clients to pass as an argument a TranslationUnit object whose contents live beyond the call to ParseAST.

llvm-svn: 63175

snaroff% time ../../Release-Asserts/bin/clang INPUTS/Cocoa_h.m
0.179u 0.051s 0:00.23 95.6%	0+0k 0+0io 0pf+0w
snaroff% time ../../Release-Asserts/bin/clang INPUTS/Cocoa_h.m -disable-free
0.169u 0.052s 0:00.22 95.4%	0+0k 0+0io 0pf+0w

llvm-svn: 63153

llvm-svn: 63150

If an input constraint refers to an output constraint, it should have the same constraint info as the output constraint. Fixes PR3417

llvm-svn: 63127

.def file for each library.  This means that adding a diagnostic
to sema doesn't require all the other libraries to be rebuilt.

Patch by Anders Johnsen!

llvm-svn: 63111

  - When it's safe, ActionResult uses the low bit of the pointer for
  the "invalid" flag rather than a separate "bool" value. This keeps
  GCC from generating some truly awful code, for a > 3x speedup in the
  result-passing microbenchmark.
  - When DISABLE_SMART_POINTERS is defined, store an ActionResult
  within ASTOwningResult rather than an ASTOwningPtr. Brings the
  performance benefits of the above to smart pointers with
  DISABLE_SMART_POINTERS defined.

Sadly, these micro-benchmark performance improvements don't seem to
make much of a difference on Cocoa.h right now. However, they're
harmless and might help with future optimizations.

llvm-svn: 63061

optimize it to use the LiteralData when possible.

llvm-svn: 63060

llvm-svn: 63055

llvm-svn: 63032

CompoundLiteralExpr so that there aren't any null pointers in the AST.

llvm-svn: 62981

llvm-svn: 62971

llvm-svn: 62947

think this has any significant effects at the moment, but it could 
matter if we start constant-folding statement expressions like gcc does.

llvm-svn: 62943

llvm-svn: 62936

Add serialization support for ReferenceType.

llvm-svn: 62934

different than those for sizeof.  Reject alignof(bitfield) like gcc does.

llvm-svn: 62928

llvm-svn: 62927

llvm-svn: 62926

llvm-svn: 62922

llvm-svn: 62884

Make sure that we know a call is invalid if we dropped arguments.

llvm-svn: 62882

llvm-svn: 62876

llvm-svn: 62859

Make sure all of the isUnsigned flags line up when comparing initializer values, to really really fix PR clang/3377

llvm-svn: 62858

Fixes PR clang/3377

llvm-svn: 62851

special action, inside function prototype scope. This avoids confusion
when we try to inject these parameters into the scope of the function
body before the function itself has been added to the surrounding
scope. Fixes <rdar://problem/6097326>.

llvm-svn: 62849

extension. Addresses clang PR/3371.

llvm-svn: 62823

initializers, so that we are within the appropriate subobject after
we've processed a multi-designator designation. We're matching GCC and
EDG's behavior on all examples I've found thus far.

*Huge* thanks to Eli Friedman for pointing out my fundamental
misunderstanding of "current object" in the C99 spec.

llvm-svn: 62812

fsyntax-only with PTH by 3%.

llvm-svn: 62774

llvm-svn: 62766

designated initializers. This implementation should cover all of the
constraints in C99 6.7.8, including long, complex designations and
computing the size of incomplete array types initialized with a
designated initializer. Please see the new test-case and holler if you
find cases where this doesn't work.

There are still some wrinkles with GNU's anonymous structs and
anonymous unions (it isn't clear how these should work; we'll just
follow GCC's lead) and with designated initializers for the members of a
union. I'll tackle those very soon.

CodeGen is still nonexistent, and there's some leftover code in the
parser's representation of designators that I'll also need to clean up.

llvm-svn: 62737

Fix Sema::Owned(ExprResult) to not use a ternary operator. Necessary to work around a Visual Studio compiler bug.

Thanks to Doug Gregor for the suggestion.

llvm-svn: 62723

llvm-svn: 62666

this removes 4266 calls to LookupDecl.

llvm-svn: 62662

No functionality change.

llvm-svn: 62640

This allows more concise syntax when allocating an object using the ASTContext's allocator.
Convert a few allocations to this operator to for test purposes.

llvm-svn: 62623

caused by my previous commit.

llvm-svn: 62613

When using a BumpPtrAllocator, this reduces malloc overhead from 2.2->1.9% (for Cocoa.h).

At this point, malloc() has dropped the fourth most expensive routine (behind Preprocessor::HandleIdentifier()).

llvm-svn: 62612

llvm-svn: 62609

Add debug hook to DeclContext.

llvm-svn: 62605