Use current working directory when Dirname is empty. This only happens when absolute source file path is used on compiler command line.

llvm-svn: 109302

appropriate for targets without detailed instruction iterineries.
The scheduler schedules for increased instruction level parallelism in
low register pressure situation; it schedules to reduce register pressure
when the register pressure becomes high.

On x86_64, this is a win for all tests in CFP2000. It also sped up 256.bzip2
by 16%.

llvm-svn: 109300

llvm-svn: 109295

function live in set. This will give us tGPR for Thumb1 and GPR otherwise,
so the copy will be spillable. rdar://8224931

llvm-svn: 109293

to be of a different register class. For example, in Thumb1 if the live-in is
a high register, we want the vreg to be a low register. rdar://8224931

llvm-svn: 109291

llvm-svn: 109285

comments explaining why it was wrong.  8225024.

Fix the real problem in 8213383: the code that splits very large
blocks when no other place to put constants can be found was not
considering the case that the block contained a Thumb tablejump.

llvm-svn: 109282

  it's too late to start backing off aggressive latency scheduling when most
  of the registers are in use so the threshold should be a bit tighter.
- Correctly handle live out's and extract_subreg etc.
- Enable register pressure aware scheduling by default for hybrid scheduler.
  For ARM, this is almost always a win on # of instructions. It's runtime
  neutral for most of the tests. But for some kernels with high register
  pressure it can be a huge win. e.g. 464.h264ref reduced number of spills by
  54 and sped up by 20%.

llvm-svn: 109279

llvm-svn: 109276

eliminate it.

llvm-svn: 109270

the BlockTraits abstractions.

llvm-svn: 109268

llvm-svn: 109267

llvm-svn: 109266

llvm-svn: 109265

llvm-svn: 109262

llvm-svn: 109248

are not demanded. This often allows the anyext to be folded away.

llvm-svn: 109242

llvm-svn: 109234

llvm-svn: 109224

llvm-svn: 109222

llvm-svn: 109216

llvmc can be now compiled with llvm-gcc on Windows.

llvm-svn: 109215

llvm-svn: 109207

llvm-svn: 109206

llvm-svn: 109205

Add complete assembler support for FMA3 instructions, with descriptions and encodings taken from the AVX manual

llvm-svn: 109204

SSE, so we can't return floating point values if this
is disabled.  Detect this error for clang.

With SSE1 only, f64 is a problem; it can be done, but
neither llvm-gcc nor clang has ever generated correct
code for it.  Since nobody noticed this I think it's
OK to treat it as an error for now.

This also handles SSE-sized vectors of floating point.
8207686, 8204109.

llvm-svn: 109201

Fix some AVX instructions which didnt had HasAVX prefix. And also a problem with PINSRW, which was totally wrong because of a typo I introduced previously

llvm-svn: 109198

ARM/PPC/MSP430-specific code (which are the only targets that
implement the hook) can directly reference their target-specific
instrinfo classes.

llvm-svn: 109171

"yet another" copy of the dwarf EH emission code that was
copied, pasted and slightly hacked up.

llvm-svn: 109169

Add remaining AVX instructions (most of them dealing with GR64 destinations. This complete the assembler support for the general AVX ISA. But we still miss instructions from FMA3 and CLMUL specific feature flags, which are now the next step

llvm-svn: 109168

llvm-svn: 109167

This is probably not the best way to implement "Force LR to 
be spilled if the Thumb function size is > 2048." do this, 
it should use the branch shortening infrastructure, but I'm
just preserving functionality here.

llvm-svn: 109165

llvm-svn: 109154

rip out the implementation of X86InstrInfo::GetInstSizeInBytes.
The code being ripped out just implemented a copy and hacked up
version of the (old) instruction encoder, and is buggy and 
terrible in other ways.  Since "GetInstSizeInBytes" is really 
only there to support the JIT's "NeedsExactSize" hook (which
noone is using), just rip out the code.  I will rip out the
NeedsExactSize hook next.

This resolves rdar://7617809 - switch X86InstrInfo::GetInstSizeInBytes to use X86MCCodeEmitter

llvm-svn: 109149

llvm-svn: 109132

llvm-svn: 109125

llvm-svn: 109122

A non function local MDNode can have an operand which is cloned by MapValue(). 

llvm-svn: 109117

llvm-svn: 109104