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If control falls off the end of a function after an __asm block, MSVC
assumes that the inline assembly filled the EAX and possibly EDX
registers with an appropriate return value. This functionality is used
in inline functions returning 64-bit integers in system headers, so we
need some amount of compatibility.

This is implemented in Clang by adding extra output constraints to every
inline asm block, and storing the resulting output registers into the
return value slot. If we see an asm block somewhere in the function
body, we emit a normal epilogue instead of marking the end of the
function with a return type unreachable.

Normal returns in functions not using this functionality will overwrite
the return value slot, and in most cases LLVM should be able to
eliminate the dead stores.

Fixes PR17201.

Reviewed By: majnemer

Differential Revision: http://reviews.llvm.org/D5177

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Before:
  not. and . or . not_eq = 1;

After:
  not.and.or.not_eq = 1;

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Now that LLVM emits correct .pdata and .xdata for inline functions, we
can reenable this.

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Fix the clang -Werror build after r217152 by flagging a polymorphically used but statically owned hierarchy with a protected base dtor and final classes to satisfy -Wnon-virtual-dtor

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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217161 91177308-0d34-0410-b5e6-96231b3b80d8

Summary:
This allows us to easily find them in the backend after the aggregates have
been lowered to other types. This is important on big-endian targets using
the N32/N64 ABI's since these ABI's must shift small structures into the
upper bits of the register.

Reviewers: atanasyan

Reviewed By: atanasyan

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5005

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217160 91177308-0d34-0410-b5e6-96231b3b80d8

Before:
  someObject.catch ();

After:
  someObject.catch();

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Before:
  var stuff = {
    // comment for update
    update : false,
             // comment for update
    modules : false,
              // comment for update
    tasks : false
  };

After:
  var stuff = {
    // comment for update
    update : false,
    // comment for update
    modules : false,
    // comment for update
    tasks : false
  };

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217157 91177308-0d34-0410-b5e6-96231b3b80d8

Summary:
Refactor VariantMatcher::MatcherOps to reduce the amount of generated code.
 - Make some code type agnostic and move it to the cpp file.
 - Return a DynTypedMatcher instead of storing the object in MatcherOps.

This change reduces the number of symbols generated in Registry.cpp by
~19%, the object byte size by ~17% and the compilation time (in non-release mode) by ~20%.

Reviewers: klimek

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D5124

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Summary:
They are returned indirectly which causes the other arguments to move to
the next argument slot.

With this, utils/ABITest does not discover any failing cases in the first
500 attempts on big/little endian for O32. Previously some of these failed.
Also tested N32/N64 little endian (big endian has other known issues) with
no issues.

Reviewers: atanasyan

Reviewed By: atanasyan

Subscribers: atanasyan, cfe-commits

Differential Revision: http://reviews.llvm.org/D4811

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r216662 changed the default ABI for 32-bit ARM targets to be "aapcs"
when no environment is given in the triple, however NetBSD requires it
to be "apcs-gnu".



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Patch by Jacques Pienaar.

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merging of namespace aliases across modules and improves source fidelity.
Incidentally also fixes PR20816.


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them to exclude tests with large stack usage from UBSan bootstrap.


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This bug was reported by UBSan.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217059 91177308-0d34-0410-b5e6-96231b3b80d8

Added cast operations to the table of vector operations. Supported status 'no' means that there are no tests in the Clang test suite for the given cast.


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In line with SemaOpenMP.cpp, etc. CUDA-specific semantic analysis code goes into
a separate file. This is in anticipation of adding extra functionality here in
the near future.

No change in functionality.

Review: http://reviews.llvm.org/D5160



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Using the intrinsic allows the SelectionDAGBuilder to turn this call
into the FABS Node and also the intrinsic is something the vectorizer knows
how to vectorize.

This patch also sets the readnone attribute on this call, which should
enable additional optmizations.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217042 91177308-0d34-0410-b5e6-96231b3b80d8

Replaced 'jit' link component with 'mcjit'.
Updated the required libraries.



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This is hoisted from clang-tidy where it's used everywhere. The implementation
is not particularly efficient right now, but there is no easy fix for that.

Differential Revision: http://reviews.llvm.org/D5085

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No change in functionality.

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This permits to add a space after closing parenthesis of a C-style cast.
Defaults to false to preserve old behavior.

Fixes llvm.org/PR19982.

Before:
  (int)i;

After:
  (int) i;

Patch by Marek Kurdej.

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Scoped lockable objects (mutex guards) are implemented as if it is a
lock itself that is acquired upon construction and unlocked upon
destruction. As it if course needs to be used to actually lock down
something else (a mutex), it keeps track of this knowledge through its
underlying mutex field in its FactEntry.

The problem with this approach is that this only allows us to lock down
a single mutex, so extend the code to use a vector of underlying
mutexes. This, however, makes the code a bit more complex than
necessary, so subclass FactEntry into LockableFactEntry and
ScopedLockableFactEntry and move all the logic that differs between
regular locks and scoped lockables into member functions.


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determining whether a declaration is out of line, instead of assuming
that the semantic and lexical DeclContext will be the same declaration
whenever they're the same entity.

This fixes behavior of declarations within merged classes and enums.


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This reinstates r215113.

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directly written in strictly-conforming source code).


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On operating systems like the BSDs, it is typically the case that
/usr/bin/python does not exist. We should therefore use /usr/bin/env
instead. This is also done in various other scripts in tools/.


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Fixes PR20731.


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  "vf[0]" ==> "vs[0]"



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