No functionality change intended, maybe a tiny performance improvement.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@270996 91177308-0d34-0410-b5e6-96231b3b80d8

Turn copies into references as suggested by clang-tidy's performance-unnecessary-copy-initialization.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@270994 91177308-0d34-0410-b5e6-96231b3b80d8

Now a TemplateTypeParm will be visualized as typename ...T if it is a pack


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@270521 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@270505 91177308-0d34-0410-b5e6-96231b3b80d8

Fix use-after-free ASan failures for modules / PCH files that deserialize abi_tag or no_sanitize attributes.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269869 91177308-0d34-0410-b5e6-96231b3b80d8

While more could be done, showing the type is a lot better than what is there now.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269623 91177308-0d34-0410-b5e6-96231b3b80d8

Reduce space in empty constructors and between data members and first public section.

Fix some Include What You Use warnings.

Differential revision: http://reviews.llvm.org/D20213


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269371 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@267788 91177308-0d34-0410-b5e6-96231b3b80d8

Bitsets, and the compiler features they rely on (vtable opt, CFI),
only have visibility within the LTO'd part of the linkage unit. Therefore,
only enable these features for classes with hidden LTO visibility. This
notion is based on object file visibility or (on Windows)
dllimport/dllexport attributes.

We provide the [[clang::lto_visibility_public]] attribute to override the
compiler's LTO visibility inference in cases where the class is defined
in the non-LTO'd part of the linkage unit, or where the ABI supports
calling classes derived from abstract base classes with hidden visibility
in other linkage units (e.g. COM on Windows).

If the cross-DSO CFI mode is enabled, bitset checks are emitted even for
classes with public LTO visibility, as that mode uses a separate mechanism
to cause bitsets to be exported.

This mechanism replaces the whole-program-vtables blacklist, so remove the
-fwhole-program-vtables-blacklist flag.

Because __declspec(uuid()) now implies [[clang::lto_visibility_public]], the
support for the special attr:uuid blacklist entry is removed.

Differential Revision: http://reviews.llvm.org/D18635

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@267784 91177308-0d34-0410-b5e6-96231b3b80d8

At the moment almost every lit.site.cfg.in contains two lines comment:

  ## Autogenerated by LLVM/Clang configuration.
  # Do not edit!

The patch adds variable LIT_SITE_CFG_IN_HEADER, that is replaced from
configure_lit_site_cfg with the note and some useful information.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@266516 91177308-0d34-0410-b5e6-96231b3b80d8

Dtrace is implemented to try and minimize performance impact on the process being traced. This results in dtrace dropping samples if it is taking too many CPU resources. Multi-threading dtrace increases the sample drop rate dramatically.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@266213 91177308-0d34-0410-b5e6-96231b3b80d8

This is re-landing r260742. I've reworked the conditionals so that it only hits when targeting Apple platforms with ld64.

Original Summary:
With this change generating clang order files using dtrace uses the following workflow:

cmake <whatever options you want>

ninja generate-order-file

ninja clang

This patch works by setting a default path to the order file (which can be overridden by the user). If the order file doesn't exist during configuration CMake will create an empty one.

CMake then ties up the dependencies between the clang link job and the order file, and generate-order-file overwrites CLANG_ORDER_FILE with the new order file.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265864 91177308-0d34-0410-b5e6-96231b3b80d8

ASTWriter."), reverted in r265526, with a fix for an iterator invalidation bug
(thanks, MSan!).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265564 91177308-0d34-0410-b5e6-96231b3b80d8

This reverts commit r265518.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265526 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265518 91177308-0d34-0410-b5e6-96231b3b80d8

Also, a little minor cleanup


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265338 91177308-0d34-0410-b5e6-96231b3b80d8

Displays a template specialization as, say, A<int, double>. Does not
yet handle UncommonTemplateNameStorage, QualifiedTemplateName, or
DependentTemplateName, but still more than worthwhile


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265104 91177308-0d34-0410-b5e6-96231b3b80d8

With this change, TemplateDecls display in the Locals Window something like

  template<typename T, typename U> struct A;



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264997 91177308-0d34-0410-b5e6-96231b3b80d8

With this change, a TemplateParameterList will suggestively display in the locals window something like:
  <typename T, int i>



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264714 91177308-0d34-0410-b5e6-96231b3b80d8

Also fixes some omissions for TemplateSpecializationType


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264710 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264621 91177308-0d34-0410-b5e6-96231b3b80d8

Use VS2015 Project Support for Natvis to eliminate the need to manually install clang native visualizer

This is the clang equivalent to llvm commit 264601. When using Visual Studio 2015, cmake now puts the native visualizers in llvm.sln, so the developer automatically sees custom visualizations.
Much thanks to ariccio who provided extensive help on this change. (manual installation still needed on VS2013).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264603 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264229 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264169 91177308-0d34-0410-b5e6-96231b3b80d8

This is based on post-commit feedback from Vedant. Totally didn't know that existed and worked on Windows.

Thanks Vedant!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264064 91177308-0d34-0410-b5e6-96231b3b80d8

Sean provided feedback based on r257934 on cfe-commits. This change addresses that feedback.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264063 91177308-0d34-0410-b5e6-96231b3b80d8

When LIT parallelizes the profraw file generation we need to generate unique temp filenames then clean them up after the driver executes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264021 91177308-0d34-0410-b5e6-96231b3b80d8

With this change, the class

  struct A {
    A(int _i);
    ~A();
    int foo(double d);
    double bar(A *a) { return 1.3; }
  };

appears in the VS2015 Locals Window as

D              0x02dbb378 struct A
|- DeclKind    CXXRecord
|- Members
 |- [0]        implicit struct A
 |- [1]        Constructor {A(int _i)}
 |- [2]        Destructor {~A()}
 |- [3]        Method {int foo(double d)}
 |- [4]        Method {double bar(struct A *)}
|- [Raw View]  /* Other stuff */

Note that these changes only benefit VS2015 as
VS2013 does not have views and only displays the
struct name "A", but the change does no apparent
harm in VS2013, so is still a win.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264020 91177308-0d34-0410-b5e6-96231b3b80d8

This patch adds a new set of substitutions to the lit run lines for order files and PGO generation which run the clang driver to get the cc1 command, then execute the cc1 command directly. This allows the scripts to bypass profiling the clang driver over and over again.

The approach in this patch was discussed via IRC with Sean Silvas.

Special thanks to Daniel Dunbar whose out-of-tree code I liberally plagiarized.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263997 91177308-0d34-0410-b5e6-96231b3b80d8

Readably displays a FunctionDecl in the Visual Studio Locals Window something like:
  void g(int, double d, struct A && arr)




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263915 91177308-0d34-0410-b5e6-96231b3b80d8

Whenever possible, use C++ names for visualizing builtin types. E.g., "long double" instead of "LongDouble"


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263891 91177308-0d34-0410-b5e6-96231b3b80d8

Displays return type and parameters for the Function Protoype object in the Locals window.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263890 91177308-0d34-0410-b5e6-96231b3b80d8

This change shows members of DeclContext objects in the Visual Studio debugger. It will also cast a TagType like a class or a struct to a DeclContext, so its methods and fields are visualized. 



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263794 91177308-0d34-0410-b5e6-96231b3b80d8

We only add this to __attribute__((deprecated)).

Differential Revision: http://reviews.llvm.org/D17865


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263652 91177308-0d34-0410-b5e6-96231b3b80d8

Created visualizer for PointerType, LValueReferenceType, RValueReferenceType, and TemplateParmType.
In addition, cleaned up the display of existing types to be more C++-like. For example, instead of

  SubstTemplateTypeParmType: {Identifier (("T"))} => Record (25), {Identifier (("A"))}

it now displays more readably as 

  SubstTemplateTypeParmType: {typename T <= struct A}

The <expand> sections still can be used for all the gory details if necessary.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263638 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263172 91177308-0d34-0410-b5e6-96231b3b80d8

This is one of a series of changes to improve the MSVC visualization of Clang types.
This one focuses on Record and SubstTemplateTypeParmType meaning that, for example,
a TemplateArgumentLoc no longer displays incomprehensibly in the locals window as

  {Argument={DeclArg={Kind=1 QT=0x033acb00 D=0xcccccccc {DeclType=???}}...

but instead much more usefully as

  Type template parameter: SubstTemplateTypeParm: {Identifier (("T"))} => Record, {Identifier (("A"))}

Additional types and improvements will be made in subsequent commits



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262933 91177308-0d34-0410-b5e6-96231b3b80d8

exactly the same as clang's existing [[clang::fallthrough]] attribute, which
has been updated to have the same semantics. The one significant difference
is that [[fallthrough]] is ill-formed if it's not used immediately before a
switch label (even when -Wimplicit-fallthrough is disabled). To support that,
we now build a CFG of any function that uses a '[[fallthrough]];' statement
to check.

In passing, fix some bugs with our support for statement attributes -- in
particular, diagnose their use on declarations, rather than asserting.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262881 91177308-0d34-0410-b5e6-96231b3b80d8

I've tried to keep the infrastructure behind parameter ABI
treatments fairly general.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262587 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262288 91177308-0d34-0410-b5e6-96231b3b80d8