tentative definitions off to the ASTConsumer at the end of the
translation unit. 

Eliminate CodeGen's internal tracking of tentative definitions, and
instead hook into ASTConsumer::CompleteTentativeDefinition. Also,
tweak the definition-deferal logic for C++, where there are no
tentative definitions.

Fixes <rdar://problem/6808352>, and will make it much easier for
precompiled headers to cope with tentative definitions in the future.

llvm-svn: 69681

PR4023

llvm-svn: 69618

llvm-svn: 69545

will talk to steve.

llvm-svn: 69519

lazy PCH deserialization. Propagate that argument wherever it needs to
be. No functionality change, except that I've tightened up a few PCH
tests in preparation.

llvm-svn: 69406

llvm-svn: 69343

 - <rdar://problem/6800351> clang not producing correct large struct
   return code for Blocks

llvm-svn: 69337

when generating a common definition.

llvm-svn: 69287

 - PR3980.

 - <rdar://problem/6762287> [irgen] crash when generating tentative
   definition of incomplete structure

 - This also avoids creating common definitions for things which are
   later overwritten.

 - XFAIL'ed external-defs.c, it isn't completing types properly yet.

llvm-svn: 69231

llvm-svn: 69168

llvm-svn: 69091

C99 mode.  This is a regression from an earlier patch of mine.

This also simplifies the linkage enums a bit.

llvm-svn: 69069

pulling some attribute munging stuff into GetLinkageForFunction.

This should fix PR3986

llvm-svn: 69045

 - Pull out SetCommonAttributes, which handles the things common to
   aliases, methods, functions, and variables.

 - Pull out SetLLVMFunctionAttributesForDefinition, which handles the
   LLVM attributes which we only want to apply to a definition (like
   noinline and alwaysinline).

 - Kill SetGVDeclarationAttributes (inlined into SetFunctionAttributes
   and specialized).

 - Kill SetFunctionAttributesForDefinition (inlined into sole caller).

 - Inline SetGVDefinitionAttributes into SetMethodAttributes and
   specialize.

 - Rename SetGVDefinitionAttributes to SetFunctionDefinitionAttributes.

This is supposed to be a no functionality change commit, but I may
have made a mistake.

llvm-svn: 69036

 - No functionality change.

llvm-svn: 69035

disambiguate it.
 - No functionality change.

llvm-svn: 69034

llvm-svn: 69033

not in c89 mode).

llvm-svn: 69032

inlined for some reason, then we don't want a strong or even weak
definition.

llvm-svn: 69031

llvm-svn: 69030

llvm-svn: 69029

llvm-svn: 69028

llvm-svn: 69027

llvm-svn: 69026

llvm-svn: 69025

 - No functionality change.

llvm-svn: 68987

llvm-svn: 68982

Fixed crasher in <rdar://problem/6780904> [irgen] Assertion failed: (Result == conversionOK && "UTF-8 to UTF-16 conversion failed"), function GetAddrOfConstantCFString, file CodeGenModule.cpp, line 1063.

Still a diagnostic related FIXME (will discuss with Daniel/Fariborz offline).

llvm-svn: 68975

their emission was deferred.
 - <rdar://problem/6775234> variables with internal linkage should not
   be exposed with -fvisibility=hidden.

llvm-svn: 68818

llvm-svn: 68755

No functionality change (really).

llvm-svn: 68726

Add a destination type argument to EmitConstantExpr. This will be used for when the destination has a reference type. (No functionality change yet)

llvm-svn: 68593

llvm-svn: 68561

 - Changed method names to match gcc (categories names still aren't
   mangled in).

 - Expose correct name for class and metadata symbols (although
   -fvisibility=hidden isn't yet correct).

 - Remove several things from llvm.used that didn't need to be there
   (I suspect this can still be trimmed).

 - Don't use asm-prefix extension for _objc_empty_{cache,vtable} (not
   needed).

 - Hide EH type class info with -fvisibility=hidden

 - Change setGlobal[Option]Visibility to not change the visibility of
   functions with internal linkage.

llvm-svn: 68510

llvm-svn: 68425

llvm-svn: 68414

llvm-svn: 68379

llvm-svn: 68369

string literals.

llvm-svn: 68363

llvm-svn: 68300