Update for llvm::sys::fs::unique_file not creating directories.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185127 91177308-0d34-0410-b5e6-96231b3b80d8
Lazily deserialize function template specializations. This fixes a cycle in
module deserialization / merging, and more laziness here is general goodness.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185132 91177308-0d34-0410-b5e6-96231b3b80d8
Use lexing mode based on FormatStyle.Standard.

Summary:
Some valid pre-C++11 constructs change meaning when lexed in C++11
mode, e.g.
#define x(_a) printf("foo"_a);
(example from http://llvm.org/bugs/show_bug.cgi?id=16342). "foo"_a is treated as
a user-defined string literal when parsed in C++11 mode.
In order to deal with this correctly, we need to set lexing mode according to
which standard the code conforms to. We already have a configuration value for
this (FormatStyle.Standard), which seems to be appropriate to use in this case
as well.

Reviewers: klimek

CC: cfe-commits, gribozavr

Differential Revision: http://llvm-reviews.chandlerc.com/D1028

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185149 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a trivial typo, add a FIXME to have more test coverage for VTableBuilder

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185159 91177308-0d34-0410-b5e6-96231b3b80d8
Use the multiple argument form of path::append.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185164 91177308-0d34-0410-b5e6-96231b3b80d8
+ "For Windows Users" section
+ description for --use-analyzer option
+ managed size of columns of the 'options' table

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185199 91177308-0d34-0410-b5e6-96231b3b80d8
[ms-cxxabi] Move CodeGenVTables::needsVTTParameter to ItaniumCXXABI.

This function only makes sense there.  Eventually it should no longer
be part of the CGCXXABI interface, as it is an Itanium-specific detail.

Differential Revision: http://llvm-reviews.chandlerc.com/D821

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185213 91177308-0d34-0410-b5e6-96231b3b80d8
Fix line endings.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185215 91177308-0d34-0410-b5e6-96231b3b80d8
Fix error recovery with in-class initializer.

Previously, for a field with an invalid in-class initializer, we
would create a CXXDefaultInitExpr referring to a null Expr*.
This is not a good idea.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185216 91177308-0d34-0410-b5e6-96231b3b80d8
PR7927, PR16247: Reimplement handling of matching extern "C" declarations
across scopes.

When we declare an extern "C" name that is not a redeclaration of an entity in
the same scope, check whether it redeclares some extern "C" entity from another
scope, and if not, check whether it conflicts with a (non-extern-"C") entity in
the translation unit.

When we declare a name in the translation unit that is not a redeclaration,
check whether it conflicts with any extern "C" entities (possibly from other
scopes).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185229 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185231 91177308-0d34-0410-b5e6-96231b3b80d8
[test] Add test case for rdar://14183893.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185244 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r185229 as it breaks compilation of <windows.h>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185256 91177308-0d34-0410-b5e6-96231b3b80d8
Driver: Push triple objects around instead of going to std::string all the time.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185261 91177308-0d34-0410-b5e6-96231b3b80d8
Compress pairs. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185264 91177308-0d34-0410-b5e6-96231b3b80d8
Add enumerators to TestVisitor::Language to allow visitor tests to
explicitly specify use of C++98 or C++11. Lang_CXX is preserved as
an alias for Lang_CXX98.

This does not add Lang_CXX1Y or Lang_C11, on the assumption that it's
better to add them if/when they are needed.

(This is a prerequisite for a test in a later patch for RecursiveASTVisitor.)

Reviewed by Richard Smith.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185276 91177308-0d34-0410-b5e6-96231b3b80d8
Bug fix: Make RecursiveASTVisitor<T>::TraverseLambdaExpr call
WalkUpFromLambdaExpr, so that the Visit* functions are called
on that AST node.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185277 91177308-0d34-0410-b5e6-96231b3b80d8
Lex: Cleanup whitespace in PragmaRegionHandler


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185280 91177308-0d34-0410-b5e6-96231b3b80d8
Reinstate r185229, reverted in r185256, with a tweak: further ignore the
standard's rule that an extern "C" declaration conflicts with any entity in the
global scope with the same name. Now we only care if the global scope entity is
a variable declaration (and so might have the same mangled name as the extern
"C" declaration). This has been reported as a standard defect.

Original commit message:

PR7927, PR16247: Reimplement handling of matching extern "C" declarations
across scopes.

When we declare an extern "C" name that is not a redeclaration of an entity in
the same scope, check whether it redeclares some extern "C" entity from another
scope, and if not, check whether it conflicts with a (non-extern-"C") entity in
the translation unit.

When we declare a name in the translation unit that is not a redeclaration,
check whether it conflicts with any extern "C" entities (possibly from other
scopes).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185281 91177308-0d34-0410-b5e6-96231b3b80d8
Teach -Wunsequenced that the side-effects of a function evaluation are sequenced
before the value computation of the result. In C, this is implied by there being
a sequence point after their evaluation, and in C++, it's implied by the
side-effects being sequenced before the expressions and statements in the
function body.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185282 91177308-0d34-0410-b5e6-96231b3b80d8