This would allow to call addCompilerUsedGlobal on some
Clang-generated globals.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212767 91177308-0d34-0410-b5e6-96231b3b80d8

value-initialization.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212764 91177308-0d34-0410-b5e6-96231b3b80d8

Originally committed in r211722, this fixed one case of dtor calls being
emitted without locations (this causes problems for debug info if the
call is then inlined), this caught only some of the cases.

Instead of trying to re-enable the location before the cleanup, simply
re-enable the location immediately after the unconditional branches in
question using a scoped device to ensure the no-location state doesn't
leak out arbitrarily.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212761 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212757 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212754 91177308-0d34-0410-b5e6-96231b3b80d8

Reviewers: hansw, rnk

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4419

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212753 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212752 91177308-0d34-0410-b5e6-96231b3b80d8

[Driver/Unittests] Follow up for r212666, add unit test for the newly exposed getARMCPUForMArch() function.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212751 91177308-0d34-0410-b5e6-96231b3b80d8

This patch adds support for respecting the ABI and type alignment
of aggregates passed by value.  Currently, all aggregates are aligned
at 8 bytes in the parameter save area.  This is incorrect for two
reasons:

- Aggregates that need alignment of 16 bytes or more should be aligned
  at 16 bytes in the parameter save area.  This is implemented by
  using an appropriate "byval align" attribute in the IR.

- Aggregates that need alignment beyond 16 bytes need to be dynamically
  realigned by the caller.  This is implemented by setting the Realign
  flag of the ABIArgInfo::getIndirect call.

In addition, when expanding a va_arg call accessing a type that is
aligned at 16 bytes in the argument save area (either one of the
aggregate types as above, or a vector type which is already aligned
at 16 bytes), code needs to align the va_list pointer accordingly.

Reviewed by Hal Finkel.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212743 91177308-0d34-0410-b5e6-96231b3b80d8

Allow diagnostic checks that originate in included files to be matched without necessarily determining the line number that the diagnostic occurs on.  The new syntax replaces the line number with '*'.  This extension is limited to diagnostics in included files and may be used where the include file is not part of the test-suite itself.

Expected uses are for diagnostics originating in system headers, or for users who use -verify in testing 3rd-party library code where the location of diagnostics in header files may change from revision to revision and their precise location is not important to the success of the test-case.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212735 91177308-0d34-0410-b5e6-96231b3b80d8

This patch adds support for passing arguments of non-Altivec vector type
(i.e. defined via attribute ((vector_size (...)))) on powerpc64-linux.

While such types are not mentioned in the formal ABI document, this
patch implements a calling convention compatible with GCC:

- Vectors of size < 16 bytes are passed in a GPR
- Vectors of size > 16 bytes are passed via reference

Note that vector types with a number of elements that is not a power
of 2 are not supported by GCC, so there is no pre-existing ABI to
follow.  We choose to pass those (of size < 16) as if widened to the
next power of two, so they might end up in a vector register or
in a GPR.  (Sizes > 16 are always passed via reference as well.)

Reviewed by Hal Finkel.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212734 91177308-0d34-0410-b5e6-96231b3b80d8

Comdat IR references were mistakenly printed for aliases when they
passed through the IR/AsmWriter code.

This makes clang's tests not check for the existance of these wrongly
printed comdat references.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212733 91177308-0d34-0410-b5e6-96231b3b80d8

This new checker, alpha.core.TestAfterDivZero, catches issues like this:

  int sum = ...
  int avg = sum / count; // potential division by zero...
  if (count == 0) { ... } // ...caught here

Because the analyzer does not necessarily explore /all/ paths through a program,
this check is restricted to only work on zero checks that immediately follow a
division operation (/ % /= %=). This could later be expanded to handle checks
dominated by a division operation but not necessarily in the same CFG block.

Patch by Anders Rönnholm! (with very minor modifications by me)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212731 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212728 91177308-0d34-0410-b5e6-96231b3b80d8

[x32] Adding X32 target support to driver, including TargetInfo,DescriptionString, flags, paths lookup, etc. Cover changes with new tests. The author of the patch is Pavel Chupin (@pavel.v.chupin).
The changes enable "hello world" on x32 target (x86_64-*-linux-gnux32). s/isX32/IsX32/ also fixed.

Differential Revision: http://reviews.llvm.org/D4180



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212725 91177308-0d34-0410-b5e6-96231b3b80d8

Summary:
* Support the multilib layout used by the mips-img-linux-gnu
* Recognize mips{,64}{,el}-img-linux-gnu as being aliases of mips-img-linux-gnu
* Use the correct dynamic linker for mips-img-linux-gnu
* Make mips32r6/mips64r6 the default CPU for mips-img-linux-gnu

Subscribers: mpf

Differential Revision: http://reviews.llvm.org/D4436


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212719 91177308-0d34-0410-b5e6-96231b3b80d8

Differential Revision: http://reviews.llvm.org/D4432


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212700 91177308-0d34-0410-b5e6-96231b3b80d8

Differential Revision: http://reviews.llvm.org/D3908


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212689 91177308-0d34-0410-b5e6-96231b3b80d8

Although this is nominally a -W option, we actually handle it in the driver
exactly as an f-group flag that's translated directly to -mllvm.

That means f_Group (and unintuitively, not W_Group) has the semantics we want
to make it behave like a standard warning flag: no automatic forwarding, no
warning for link invocations and compile-only.

Silences diagnostics like:

  [691/1545] Linking CXX executable bin/llvm-diff
  clang-3.5: warning: argument unused during compilation: '-Wframe-larger-than=2048'

(Hopefully we can move towards handling these in the frontend but that'll
require some infrastructure work.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212670 91177308-0d34-0410-b5e6-96231b3b80d8

The sret paramater consumes the register after the implicit 'this'
parameter, as with other calling conventions.

Fixes PR20278, which turned out to be very easy.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212669 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212667 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212666 91177308-0d34-0410-b5e6-96231b3b80d8

Turn llvm::SpecialCaseList into a simple class that parses text files in
a specified format and knows nothing about LLVM IR. Move this class into
LLVMSupport library. Implement two users of this class:
  * DFSanABIList in DFSan instrumentation pass.
  * SanitizerBlacklist in Clang CodeGen library.
The latter will be modified to use actual source-level information from frontend
(source file names) instead of unstable LLVM IR things (LLVM Module identifier).

Remove dependency edge from ClangCodeGen/ClangDriver to LLVMTransformUtils.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212643 91177308-0d34-0410-b5e6-96231b3b80d8

gcc supports this behavior and it is pervasively used inside the Linux
kernel.

Note that both gcc and clang will reject code that attempts to do this
in a C++ language mode.

This fixes PR17998.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212631 91177308-0d34-0410-b5e6-96231b3b80d8

Differential Revision: http://reviews.llvm.org/D4434


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212625 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212624 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212622 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212621 91177308-0d34-0410-b5e6-96231b3b80d8

The clang -cc1as options are nearly a strict subset of -cc1. Instead of
duplicating the definitions and documentation, let's go ahead and share the
definitions in a similar way the current handling of combined driver and
frontend flags, eliminating some of the vestigial legacy surrounding the
assembler subcommand.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212620 91177308-0d34-0410-b5e6-96231b3b80d8

Summary:
This removes the need to pass -mnan=2008 explicitly to be able to compile
the test-suite for MIPS32r6/MIPS64r6.

Differential Revision: http://reviews.llvm.org/D4433


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212619 91177308-0d34-0410-b5e6-96231b3b80d8

Summary:
While debugging another issue, I noticed that Mips currently specifies that the
count leading zero builtins are undefined when the input is zero. The
architecture specifications say that the clz and dclz instructions write 32 or
64 respectively when given zero.

This doesn't fix any bugs that I'm aware of but it may improve optimisation in
some cases.

Differential Revision: http://reviews.llvm.org/D4431


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212618 91177308-0d34-0410-b5e6-96231b3b80d8

Before:
  (aaaaaaaaaa->*
   bbbbbbb)(aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));

After:
  (aaaaaaaaaa->*bbbbbbb)(
      aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212617 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed incompatibility with MSVC builds in range-based for loops in DataRecursiveASTVisitor and RecursiveASTVisitor for OpenMP constructs.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212601 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212600 91177308-0d34-0410-b5e6-96231b3b80d8

[OPENMP] Fixed incompatibility in [Data]RecursiveASTVisitor::TraverseOMPExecutableDirective method with MSVC for range-based loops.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212599 91177308-0d34-0410-b5e6-96231b3b80d8

Having some kind of weird kernel-assisted ABI for these when the
native instructions are available appears to be (and should be) the
exception; OSs have been gradually opting in for years and the code
was getting silly.

So let LLVM decide whether it's possible/profitable to inline them by
default.

Patch by Phoebe Buckheister.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212598 91177308-0d34-0410-b5e6-96231b3b80d8

Though not completely identical, make former
IndentFunctionDeclarationAfterType change this flag for backwards
compatibility (it is somewhat close in meaning and better the err'ing on
an unknown config flag).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212597 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212594 91177308-0d34-0410-b5e6-96231b3b80d8

[OPENMP] Improved code of DataRecursiveASTVisitor and RecursiveASTVisitor for OpenMP constructs per Tobias Grosser comments.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212592 91177308-0d34-0410-b5e6-96231b3b80d8

Key changes:
- Correctly (well ...) distinguish function declarations and variable
  declarations with ()-initialization.
- Don't indent when breaking function declarations/definitions after the
  return type.
- Indent variable declarations and typedefs when breaking after the
  type.

This fixes llvm.org/PR17999.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212591 91177308-0d34-0410-b5e6-96231b3b80d8