Fix r165005: The lexical DeclContext is not the right place to make a decision about whether we need to call tryAddTopLevelDecl or not. That call should be made when the DeclContext's redeclaration context is the translation unit.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165215 91177308-0d34-0410-b5e6-96231b3b80d8
Fix typo in comments.



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Prefer StringRef::startswith to the strncmp/strlen contraption.

This may be slightly more efficient and is definitely more readable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165217 91177308-0d34-0410-b5e6-96231b3b80d8
Revert 165129



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Fix scope location when parsing GNU attributes.

For GNU attributes, instead of reusing attribute source 
location for the scope location, use SourceLocation() since 
GNU attributes don not have scope tokens. 



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Driver: Link crtfastmath.o if it's available and -ffast-math is specified.

crtfastmath.o contains routines to set the floating point flags to a faster,
unsafe mode. Linking it in speeds up code dealing with denormals significantly
(PR14024).

For now this is only enabled on linux where I can test it and crtfastmath.o is
widely available. We may want to provide a similar file with compiler-rt
eventually and/or enable it on other platforms too.

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Add a test case for r156143, which enabled general varargs support for the
64-bit PPC SVR4 ABI.

The test verifies passing of structures, items with 16-byte alignment, and
small items that are passed right-justified in the parameter save area slot.


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Fix the CodeGen/ppc64-varargs-struct.c test case to tolerate release builds.


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Fixed ParamDecl source range for implicit typed k&r parameters.

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Fixed friend decl source range.

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Fixed instantiated operators source range.

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Fixed FunctionTypeLoc source range.

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Egriegious hack to support libstdc++4.6's broken <atomic> header, which defines
a non-inline namespace, then reopens it as inline to try to add its symbols to
the surrounding namespace. In this one special case, permit the namespace to be
reopened as inline, and patch up the name lookup tables to match.


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libstdc++-4.6 needs the same common_type fix as libstdc++-4.7. Other than that,
Clang can now cope with its eccentricities in C++11 mode.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165265 91177308-0d34-0410-b5e6-96231b3b80d8
If we flow off the end of a value-returning function:
 - outside C++, return undef (behavior is not undefined unless the value is used)
 - in C++, with -fcatch-undefined-behavior, perform an appropriate trap
 - in C++, produce an 'unreachable' (behavior is undefined immediately)


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Test case for r165275.

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[libclang] Introduce CXCursor_ModuleImportDecl cursor kind, used for a module
import declaration.

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[preprocessing record] Have PPEntityID be independent of the size of the
loaded entities vector, otherwise its meaning will change when a module
is imported and the vector size changes.

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[Modules] Introduce Module::TopHeaders which is a set of top-level headers
that are associated with a (sub)module.

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[libclang] Introduce new C functions that provide information about modules:

clang_Cursor_getModule
clang_Module_getParent
clang_Module_getName
clang_Module_getFullName
clang_Module_getNumTopLevelHeaders
clang_Module_getTopLevelHeader

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