Un-break the gdb buildbot.
- Use the debug location of the return expression for the cleanup code
  if the return expression is trivially evaluatable, regardless of the
  number of stop points in the function.
- Ensure that any EH code in the cleanup still gets the line number of
  the closing } of the lexical scope.
- Added a testcase with EH in the cleanup.

rdar://problem/13442648

llvm-svn: 181056

- Decouples RegisterContext_x86_64 from UserArea.
- Restores the original definition of UserArea so that it can be used to generate offsets for use with ptrace.
- Moves UserArea to the 64-bit Linux specialization.

- Also fixes an off-by-one error for the size of m_gpr.
- Also adds a TODO comment noting the need for a mechanism to identify the correct plugin based on the target OS (and architecture).

Reviewed by: Matt Kopec and Samuel Jacob

llvm-svn: 181055

[PowerPC] Avoid using '$' in generated assembler code

PowerPC assemblers are supposed to support a stand-alone '$' symbol
as an alternative of '.' to refer to the current PC.  This does not
work in the LLVM assembler parser yet.

To avoid bootstrap failures when using the LLVM assembler as system
assembler, this patch modifies the assembler source code generated
by LLVM to avoid using '$' (and simply use '.' instead).

llvm-svn: 181054

[PowerPC] Parse platform-specifc variant kinds in AsmParser

This patch adds support for PowerPC platform-specific variant
kinds in MCSymbolRefExpr::getVariantKindForName, and also
adds a test case to verify they are translated to the appropriate
fixup type.

llvm-svn: 181053

[PowerPC] Add some Book II instructions to AsmParser

This patch adds a couple of Book II instructions (isync, icbi) to the
PowerPC assembler parser.  These are needed when bootstrapping clang
with the integrated assembler forced on, because they are used in
inline asm statements in the code base.

The test case adds the full list of Book II storage control instructions,
including associated extended mnemonics.  Again, those that are not yet
supported as marked as FIXME.

llvm-svn: 181052

[PowerPC] Support extended mnemonics in AsmParser

This patch adds infrastructure to support extended mnemonics in the
PowerPC assembler parser.  It adds support specifically for those
extended mnemonics that LLVM will itself generate.

The test case lists *all* extended mnemonics according to the
PowerPC ISA v2.06 Book I, but marks those not yet supported
as FIXME.

llvm-svn: 181051

[PowerPC] Add assembler parser

This adds assembler parser support to the PowerPC back end.

The parser will run for any powerpc-*-* and powerpc64-*-* triples,
but was tested only on 64-bit Linux.  The supported syntax is
intended to be compatible with the GNU assembler.

The parser does not yet support all PowerPC instructions, but
it does support anything that is generated by LLVM itself.
There is no support for testing restricted instruction sets yet,
i.e. the parser will always accept any instructions it knows,
no matter what feature flags are given.

Instruction operands will be checked for validity and errors
generated.  (Error handling in general could still be improved.)

The patch adds a number of test cases to verify instruction
and operand encodings.  The tests currently cover all instructions
from the following PowerPC ISA v2.06 Book I facilities:
Branch, Fixed-point, Floating-Point, and Vector. 
Note that a number of these instructions are not yet supported
by the back end; they are marked with FIXME.

A number of follow-on check-ins will add extra features.  When
they are all included, LLVM passes all tests (including bootstrap)
when using clang -cc1as as the system assembler.

llvm-svn: 181050

llvm-svn: 181049

Add serialization for captured statements and captured decls.  Also add
a const_capture_iterator to CapturedStmt.

Test contributed by Wei Pan

Differential Revision: http://llvm-reviews.chandlerc.com/D727

llvm-svn: 181048

Decompose GVN::processNonLocalLoad() (about 400 LOC) into smaller helper functions. No function change. 

This function consists of following steps:
   1. Collect dependent memory accesses.
   2. Analyze availability.
   3. Perform fully redundancy elimination, or 
   4. Perform PRE, depending on the availability

 Step 2, 3 and 4 are now moved to three helper routines.

llvm-svn: 181047

PR15906: The body of a lambda is not an evaluated subexpression; don't visit it when visiting such subexpressions.

llvm-svn: 181046

llvm-svn: 181045

Improvements to the std::map data formatter to recognize when invalid memory is being explored and bail out instead of looping for a potentially very long time

llvm-svn: 181044

Move the creation of CapturedStmt parameters out of CodeGen and into
Sema, making it easier to customize the outlined function. The
ImplicitParamDecls are stored in the CapturedDecl using an
ASTContext-allocated array.

Differential Revision: http://llvm-reviews.chandlerc.com/D722

llvm-svn: 181043

llvm-svn: 181042

its fields.

This removes false dependencies between DSP instructions which access different
fields of the the control register. Implicit register operands are added to
instructions RDDSP and WRDSP after instruction selection, depending on the
value of the mask operand.

llvm-svn: 181041

[analyzer] Start hacking up alternate control-flow edge generation.  WIP.  Not guaranteed to do anything useful yet.

llvm-svn: 181040

llvm-svn: 181039

By supporting the vectorization of PHINodes with more than two incoming values we can increase the complexity of nested if statements.

We can now vectorize this loop:

int foo(int *A, int *B, int n) {
  for (int i=0; i < n; i++) {
    int x = 9;
    if (A[i] > B[i]) {
      if (A[i] > 19) {
        x = 3;
      } else if (B[i] < 4 ) {
        x = 4;
      } else {
        x = 5;
      }
    }
    A[i] = x;
  }
}

llvm-svn: 181037

llvm-svn: 181035

llvm-svn: 181034

This can be optimized using the BFI_INT instruction.

llvm-svn: 181033

llvm-svn: 181032

checking for a lambda.

Thanks to Jordan for the pointer.

llvm-svn: 181031

It is preferable for a unit test to be responsible for creating its own input
data instead of relying on checked-in data files. Now the IncludeExcludeTest
for cpp11-migrate does this.

- Removed old data files.
- Updated build system and lit files to remove references to old data files.

llvm-svn: 181029

llvm-svn: 181028

Reviewed by: Daniel Malea

llvm-svn: 181027

Should fix PR15877.

llvm-svn: 181026

llvm-svn: 181025

llvm-svn: 181024

git-svn accidentally added these for me.

llvm-svn: 181023

Patch by Robert Wilhelm.

llvm-svn: 181022

Clang always calls setWarnOnSpellCheck, but we shouldn't require every client to
do so.

Issue noticed by Enea Zaffanella.

llvm-svn: 181021

Before: for (int i = 0;(i < 10); ++i) {}
After:  for (int i = 0; (i < 10); ++i) {}
llvm-svn: 181020

llvm-svn: 181019

llvm-svn: 181018

Before: for (; a&& b;) {}
After:  for (; a && b;) {}
llvm-svn: 181017

The soon-to-be-committed SystemZ port uses 128-bit IEEE floats.
MIPS64 GNU/Linux does too (albeit with unusual NaNs).

llvm-svn: 181016

Another step towards reinstating the SystemZ backend.  I'll commit
the configure changes separately (TARGET_HAS_JIT etc.), then commit
a patch to enable the MCJIT tests on SystemZ.

llvm-svn: 181015

Patch by Ismail Pazarbasi.

llvm-svn: 181011