Objective-C [IRGen]. Add encoding for 'weak' attribute of a
'readonly' property. // rdar://16136439



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205477 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Emit some functions as weak_odr under -fms-compatibility

Summary:
MSVC always emits inline functions marked with the extern storage class
specifier.  The result is something similar to the opposite of
__attribute__((gnu_inline)).

This extension is also available in C.

This fixes PR19264.

Reviewers: rnk, rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3207

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205485 91177308-0d34-0410-b5e6-96231b3b80d8
Allow ASTFile to be reset to null

Which we do in removeModules().

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205491 91177308-0d34-0410-b5e6-96231b3b80d8
[OPENMP] Small update for C++11


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205506 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Understand that "auto" is a type.

Before:
  MACRO(auto * a);

After:
  MACRO(auto *a);

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205517 91177308-0d34-0410-b5e6-96231b3b80d8
Improved semantics for implicit scalar -> extvector conversions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205521 91177308-0d34-0410-b5e6-96231b3b80d8
x

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205526 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Prefer an additional line-break over hanging indent.

Don't allow the RHS of an operator to be split over multiple
lines unless there is a line-break right after the operator.

Before:
  if (aaaa && bbbbb || // break
                  cccc) {
  }

After:
  if (aaaa &&
      bbbbb || // break
          cccc) {
  }

In most cases, this seems to increase readability.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205527 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "Add support for named values in the parser."
This was submitted before it was ready.

This reverts commit 62060a01e095cf35eb9ca42a333752d12714f35c.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205533 91177308-0d34-0410-b5e6-96231b3b80d8
Code cleanup (re-indent)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205536 91177308-0d34-0410-b5e6-96231b3b80d8
Teach getTemplateInstantiationPattern to deal with generic lambdas.

No functionality change.

When determining the pattern for instantiating a generic lambda call operator specialization - we must not go drilling down for the 'prototype' (i.e. as written) pattern - rather we must use our partially transformed  pattern (whose DeclRefExprs are wired correctly to any enclosing lambda's decls that should be mapped correctly in a local instantiation scope) that is the templated pattern of the specialization's primary template (even though the primary template might be instantiated from a 'prototype' member-template).  Previously, the drilling down was haltted by marking the instantiated-from primary template as a member-specialization (incorrectly). 

This prompted Richard to remark (http://llvm-reviews.chandlerc.com/D1784?id=4687#inline-10272) 
"It's a bit nasty to (essentially) set this bit incorrectly. Can you put the check into getTemplateInstantiationPattern instead?"

In my reckless youth, I chose to ignore that comment.  With the passage of time, I have come to learn the value of bowing to the will of the angry Gods ;) 




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205543 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r205436:

        Extend the SSE2 comment lexing to AVX2. Only 16byte align when not on AVX2.

        This provides some 3% speedup when preprocessing gcc.c as a single file.


The patch is wrong, it always uses SSE2, and when I fix that there's no speedup
at all. I am not sure where the 3% came from previously.

--Thi lie, and those below, will be ignored--

M    Lex/Lexer.cpp


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-fms-extensions: Error out on #pragma init_seg

By ignoring this pragma with a warning, we're essentially miscompiling
the user's program.  WebKit / Blink use this pragma to disable dynamic
initialization and finalization of some static data, and running the
dtors crashes the program.

Error out for now, so that /fallback compiles the TU correctly with
MSVC.  This pragma should be implemented some time this month, and we
can remove this hack.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205554 91177308-0d34-0410-b5e6-96231b3b80d8
vector [Sema]. Check for proper use of 's' char prefix
(which indicates vector expression is a string of hex
values) instead of crashing in code gen. // rdar://16492792


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205557 91177308-0d34-0410-b5e6-96231b3b80d8
Turn off -Wmissing-noreturn warning for blocks 
as there is no way to attach this attribute to the
block literal. // rdar://16274746


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205580 91177308-0d34-0410-b5e6-96231b3b80d8
Put macro redefinition warnings under -Wmacro-redefined

This is consistent with -Wbuiltin-macro-redefined, and puts this common
extension warning under a flag.

Reviewers: rsmith

Differential Revision: http://llvm-reviews.chandlerc.com/D3283

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205591 91177308-0d34-0410-b5e6-96231b3b80d8
Add clang-cl alias to allow users to disable c4005

If we ever want three or more aliases, at that point we should put MSVC
warning ids in DiagnosticGroups.td.  We can use that to support #pragma
warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205598 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Don't create branch weight metadata from empty profiles

If all of our weights are zero when calculating branch weights, it
means we haven't profiled the code in question. Avoid creating a
metadata node that says all branches are equally likely in this case.

The test also checks constructs that hit the other createBranchWeights
overload. These were already working.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205606 91177308-0d34-0410-b5e6-96231b3b80d8
Extend -Wtautological-constant-out-of-range-compare to handle boolean values
better.  This warning will now trigger on the following conditionals:

bool b;
int i;

if (b > 1) {}  // always false
if (0 <= (i > 5)) {} // always true
if (-1 > b) {} // always false

Patch by Per Viberg.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205608 91177308-0d34-0410-b5e6-96231b3b80d8
Basic: rename VisualStudio to Windows

Visual Studio is the Integrated Development Environment.  The toolchain is
generally referred to MSVC.  Rename the target information to be more precise as
per the recommendation of Reid Kleckner.

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