Add a CastInfo struct that will be used for cast information when constructing cast expressions. Right now it only stores the cast kind, but in the future it might store conversion functions and constructors.

llvm-svn: 78599

1. Passing something that isn't a string used to cause:
   "argument to annotate attribute was not a string literal"
  make it say "section attribute" instead.

2. Fix the location of the above message to point to the
   bad argument instead of the section token.

3. Implement rdar://4341926, by diagnosing invalid section
   specifiers in the frontend rather than letting them slip all
   the way to the assembler (a QoI win).

An example of #3 is that we used to produce something like this:

/var/folders/n7/n7Yno9ihEm894640nJdSQU+++TI/-Tmp-//ccFPFGtT.s:2:Expected comma after segment-name
/var/folders/n7/n7Yno9ihEm894640nJdSQU+++TI/-Tmp-//ccFPFGtT.s:2:Rest of line ignored. 1st junk character valued 46 (.).

Daniel improved clang to use llvm_report_error, so now we got:

$ clang t.c -c
fatal error: error in backend: Global variable 'x' has an invalid section specifier 'sadf': mach-o section specifier
      requires a segment and section separated by a comma.

with no loc info.  Now we get:

$ clang t.c -fsyntax-only
t.c:4:30: error: argument to 'section' attribute is not valid for this target: mach-o section specifier requires a segment
      and section separated by a comma
int x __attribute__((section("sadf")));
                             ^

which is nice :)

llvm-svn: 78586

mac, use an explicit triple.

llvm-svn: 78583

llvm-svn: 78582

a synthesized copy constructor.

llvm-svn: 78580

llvm-svn: 78578

llvm-svn: 78570

For example,
--
ddunbar@giles:Frontend$ clang -c backend-errors.c
fatal error: error in backend: Global variable 'a' has an invalid section specifier
      'I AM, not, legal': mach-o section specifier uses an unknown section type.
--
compare to:
--
ddunbar@giles:Frontend$ gcc -c backend-errors.c
/var/folders/DQ/DQ8GT3++HESEzT1obWBynE+++TI/-Tmp-//cc45w2pq.s:2:Expected comma after segment-name
/var/folders/DQ/DQ8GT3++HESEzT1obWBynE+++TI/-Tmp-//cc45w2pq.s:2:Rest of line ignored. 1st junk character valued 77 (M).
--

Yay!

I am not tied to my wording choice, we could also go with "uncoverable error"
for the prefix, or just leave it off entirely.

llvm-svn: 78554

--- Reverse-merging r78535 into '.':
D    test/Sema/altivec-init.c
U    include/clang/Basic/DiagnosticSemaKinds.td
U    include/clang/AST/Expr.h
U    include/clang/AST/StmtNodes.def
U    include/clang/Parse/Parser.h
U    include/clang/Parse/Action.h
U    tools/clang-cc/clang-cc.cpp
U    lib/Frontend/PrintParserCallbacks.cpp
U    lib/CodeGen/CGExprScalar.cpp
U    lib/Sema/SemaInit.cpp
U    lib/Sema/Sema.h
U    lib/Sema/SemaExpr.cpp
U    lib/Sema/SemaTemplateInstantiateExpr.cpp
U    lib/AST/StmtProfile.cpp
U    lib/AST/Expr.cpp
U    lib/AST/StmtPrinter.cpp
U    lib/Parse/ParseExpr.cpp
U    lib/Parse/ParseExprCXX.cpp

llvm-svn: 78551

llvm-svn: 78542

llvm-svn: 78541

llvm-svn: 78536

In addition to being defined by the AltiVec PIM, this is also the vector
initializer syntax used by OpenCL, so that vector literals are compatible
with macro arguments.

llvm-svn: 78535

llvm-svn: 78519

 of base/field which have trivial copy constructor.

llvm-svn: 78516

llvm-svn: 78515

llvm-svn: 78507

llvm-svn: 78502

llvm-svn: 78491

llvm-svn: 78490

llvm-svn: 78489

llvm-svn: 78488

Introduce a new PragmaPack attribute, and use it for #pragma pack. The PackedAttr now only represents __attribute__((packed)).

This is necessary because #pragma pack and __attribute__((packed)) have different semantics. No functionality change yet, but this lays the groundwork for fixing a record layout bug.

llvm-svn: 78483

llvm-svn: 78481

getFunctionLevelDeclContext needs to get the previous DeclContext if EnterDeclaratorContext has been called. Fixes PR4694. (Doug, please review)

llvm-svn: 78480

llvm-svn: 78478

llvm-svn: 78474

the new havior is better so...

llvm-svn: 78473

llvm-svn: 78471

llvm-svn: 78452

to allow sharing of nodes. Simplifies some aspects of template
instantiation, and fixes both PR3444 and <rdar://problem/6757457>.

llvm-svn: 78450

llvm-svn: 78448

non-trivial copy constructors.

llvm-svn: 78445

copying non-virtual base classes which have non-trivial
constructor. Work in progress.

llvm-svn: 78436

llvm-svn: 78434

llvm-svn: 78429

llvm-svn: 78415

separately.  Add the framework (currently unfed) for finding friend declarations
during argument-dependent lookup.

llvm-svn: 78414

fortuitous.  WIP.

llvm-svn: 78413

llvm-svn: 78412