- Each target asm parser now creates its own MCSubtatgetInfo (if needed).
- Changed AssemblerPredicate to take subtarget features which tablegen uses
  to generate asm matcher subtarget feature queries. e.g.
  "ModeThumb,FeatureThumb2" is translated to
  "(Bits & ModeThumb) != 0 && (Bits & FeatureThumb2) != 0".

llvm-svn: 134678

llvm-svn: 134643

llvm-svn: 134572

llvm-svn: 134561

llvm-svn: 133821

is larger than the sum of the elements (including per-element padding).

llvm-svn: 133631

llvm-svn: 133561

explanation of what the EH table describes.

llvm-svn: 133559

const Constant *.

llvm-svn: 133400

llvm-svn: 133083

llvm-svn: 133007

Dan noted that this would work on the case shown on the commit message. I think
the case that was failing was a bb ending with a redundant conditional jump:

...
jne foo

foo:
...

I was unable to find any such case in the tests or in a debug build of clang,
so I will revert this part of the patch and watch the bots.

llvm-svn: 133004

AnalyzeBranch.

llvm-svn: 132981

Add a triple to the tests.

llvm-svn: 132885

llvm-svn: 132883

we try to branch to them.

Before we were creating successor lists with duplicated entries. Fixing that
found a bug in isBlockOnlyReachableByFallthrough that would causes it to
return the wrong answer for

-----------
...
jne foo
jmp bar

foo:
----------

llvm-svn: 132882

and definitions when emitting global variables.  This was causing global 
declarations to be emitted as if they were definitions.
Fixes <rdar://problem/9429892>.

llvm-svn: 132825

llvm-svn: 132668

llvm-svn: 132433

llvm-svn: 132427

llvm-svn: 132377

llvm-svn: 132373

llvm-svn: 132371

handler's data area starts with a 4-byte reference to the personality
function, followed by the DWARF LSDA.

llvm-svn: 132302

handler.

At this moment, only GCC-style exceptions are supported. Other kinds
of exceptions, including "traditional" SEH and Microsoft Visual C++ exceptions,
need more work--and an compiler exception model that isn't specific to
GCC-style exceptions!

In particular, I imagine that it would be possible to mix "traditional" SEH
with GCC-style EH or Microsoft C++ EH. Currently LLVM has no way (beyond some
target-specific defaults and whole-module compiler switches) of knowing which
scheme to use when.

llvm-svn: 132283

llvm-svn: 132250

llvm-svn: 132239

There was no way to check if a given register/mode pair was valid. We now return
an error code (-2) instead of asserting. If anyone thinks that an assert
at this point  is really needed, we can autogen a hasValidDwarfRegNum instead.

llvm-svn: 132236

the Win64 EH mechanism to implement GCC-style exceptions. LLVM supports
hardly anything else at this point!

llvm-svn: 132234

subregisters:

When a value is in a subregister, at least report the location as being
the superregister. We should extend the .td files to encode the bit
range so that we can produce a DW_OP_bit_piece.

llvm-svn: 132224

llvm-svn: 132222

Keep this simple. Use DIType to get signness and size of a type. Based on size, select appropraite form.

llvm-svn: 132206

This fixes regressions reported by buildbots as a fallout of r132193.

llvm-svn: 132197

llvm-svn: 132193

LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

llvm-svn: 132033

llvm-svn: 131940

llvm-svn: 131936

llvm-svn: 131760

llvm-svn: 131757

llvm-svn: 131756