[SystemZ] Set up JIT/MCJIT test cases

This patch adds the necessary configuration bits and #ifdef's to set up
the JIT/MCJIT test cases for SystemZ.  Like other recent targets, we do
fully support MCJIT, but do not support the old JIT at all.  Set up the
lit config files accordingly, and disable old-JIT unit tests.

Patch by Richard Sandiford.

llvm-svn: 181207

[SystemZ] Add MC test cases

This adds all MC tests for the SystemZ target.

Patch by Richard Sandiford.

llvm-svn: 181206

[SystemZ] Add DebugInfo test cases

This adds all DebugInfo tests for the SystemZ target.

This version of the patch incorporates feedback from reviews by
Eric Christopher and Rafael Espindola.  Thanks to all reviewers!

Patch by Richard Sandiford.

llvm-svn: 181205

[SystemZ] Add CodeGen test cases

This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.

llvm-svn: 181204

[SystemZ] Add back end

This adds the actual lib/Target/SystemZ target files necessary to
implement the SystemZ target.  Note that at this point, the target
cannot yet be built since the configure bits are missing.  Those
will be provided shortly by a follow-on patch.

This version of the patch incorporates feedback from reviews by
Chris Lattner and Anton Korobeynikov.  Thanks to all reviewers!

Patch by Richard Sandiford.

llvm-svn: 181203

We've added the RS880 variant in the LLVM backend to represent an R600
GPU with no vertex cache, so we need to update the GPU mappings for
-mcpu.

llvm-svn: 181202

[SystemZ] Define DWARF encoding

This is another patch in preparation for adding the SystemZ target.
It defines the appropriate values for DWARF encodings; the intent
is to be compatible with what GCC currently does on the target.

Patch by Richard Sandiford.

llvm-svn: 181201

Simplify JIT unit test #ifdefs

Several platforms need to disable all old-JIT unit tests, since they only
support the new MCJIT.  This currently done via #ifdef'ing out those tests
in the ExecutionEngine/JIT/*.cpp files.  As those #ifdef's have grown
historically, we now have a number of repeated directives which -in total-
cover nearly the whole file, but leave a couple of helper functions out.
When building the tests with clang itself, those helper functions now
cause spurious "unused function" warnings.

To fix those warnings, and also to remove the duplicate #ifdef conditions
and make it easier to disable the tests for a new target, this patch
consolidates the #ifdefs into a single one per file, which covers all
the tests including all helper routines.

Tested on PowerPC and SystemZ.

llvm-svn: 181200

llvm-svn: 181199

To pacify GCC warning about control reaching end of non-void function.

llvm-svn: 181197

Summary: Patch based on a patch by Ehsan Akhgari.

Reviewers: djasper

Reviewed By: djasper

CC: cfe-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D750

llvm-svn: 181196

llvm-svn: 181195

llvm-svn: 181194

Some flags that are common to ASan/MSan/TSan/LSan have been moved to
sanitizer_common.

llvm-svn: 181193

[PowerPC] Fix memory corruption in AsmParser

As pointed out by Evgeniy Stepanov, assigning a std::string temporary
to a StringRef is not a good idea.  Rework MatchRegisterName to avoid
using the .lower routine.

llvm-svn: 181192

LLVM/Clang basically don't use such comments and for Google-style,
include-lines are explicitly exempt from the column limit. Also, for
most cases, where the column limit is violated, the "better" solution
would be to move the comment to before the include, which clang-format
cannot do (yet).

llvm-svn: 181191

print "//mach_kernel" if you are debugging an executable
in the top level directory.

llvm-svn: 181190

llvm-svn: 181189

llvm-svn: 181188

clang-format did not indent any declarations/definitions when breaking
after the type. With this change, it indents for all declarations but
does not indent for function definitions, i.e.:

Before:
const SomeLongTypeName&
some_long_variable_name;
typedef SomeLongTypeName
SomeLongTypeAlias;
const SomeLongReturnType*
SomeLongFunctionName();
const SomeLongReturnType*
SomeLongFunctionName() { ... }

After:
const SomeLongTypeName&
    some_long_variable_name;
typedef SomeLongTypeName
    SomeLongTypeAlias;
const SomeLongReturnType*
    SomeLongFunctionName();
const SomeLongReturnType*
SomeLongFunctionName() { ... }

While it might seem inconsistent to indent function declarations, but
not definitions, there are two reasons for that:
- Function declarations are very similar to declarations of function
type variables, so there is another side to consistency to consider.
- There can be many function declarations on subsequent lines and not
indenting can make them harder to identify. Function definitions
are already separated by their body and not indenting
makes the function name slighly easier to find.

llvm-svn: 181187

(Would sometimes optimize away conacts used to extend a vector with undef values)

llvm-svn: 181186

__alignof__ of a field.

This problem can only happen in C++11.

Also do some petty optimizations.

rdar://13784901

llvm-svn: 181185

llvm-svn: 181184

This seems to be more common in LLVM, Google and Chromium.

Before:
class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA :
    public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,
    public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {
};

After:
class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,
      public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {
};

llvm-svn: 181183

Before: template <class ... Ts> void Foo(Ts ... ts) { Foo(ts ...); }
After:  template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }
llvm-svn: 181182

llvm-svn: 181181

pointers or not depending upon the function attributes.

llvm-svn: 181180

Looks like symbol resolution is not working on cygwin, the test fails
because __gxx_personality_v0 is not found.

llvm-svn: 181179

llvm-svn: 181178

Thanks Nick Lewycky for pointing this out.

llvm-svn: 181177

Use unknown results for places where it would be needed

llvm-svn: 181176

We used to disable constant merging not only if a constant is llvm.used, but
also if an alias of a constant is llvm.used. This change fixes that.

llvm-svn: 181175

Fix assert if __extension__ or _Generic is used when initializing a char array from a string literal.

llvm-svn: 181174

llvm-svn: 181173

We currently have no way to register new eh frames on ARM.

llvm-svn: 181172

llvm-svn: 181171

assignments in constant expressions. No significant functionality changes
(slight improvement to potential constant expression checking). 

llvm-svn: 181170

It looks like eh uses an unimplemented relocation on pp64

llvm-svn: 181169

llvm-svn: 181168

This gets exception handling working on ELF and Macho (x86-64 at least).
Other than the EH frame registration, this patch also implements support
for GOT relocations which are used to locate the personality function on
MachO.

llvm-svn: 181167