implement copysign as a native op if they have it.

llvm-svn: 26541

rep/stos and rep/mov if the count is not a constant. We could do
  rep/stosl; and $count, 3; rep/stosb
For now, I will lower them to memset / memcpy calls. We will revisit this after
a little bit experiment.

Also need to take care of the trailing bytes even if the count is a constant.
Since the max. number of trailing bytes are 3, we will simply issue loads /
stores.

llvm-svn: 26517

llvm-svn: 26512

llvm-svn: 26479

llvm-svn: 26438

llvm-svn: 26372

  and ExternalSymbol.
- Use C++ code (rather than tblgen'd selection code) to match the above
  mentioned leaf nodes. Do not mutate and nodes and do not record the
  selection in CodeGenMap. These nodes should be safe to duplicate. This is
  a performance win.

llvm-svn: 26335

1. Various asm printer bug.
2. Lowering bug. Now TargetGlobalAddress is wrapped in X86ISD::TGAWrapper.

llvm-svn: 26324

dynamic-no-pic, and default.
PPC and x86 default is dynamic-no-pic for Darwin, pic for others.
- Removed options -enable-pic and -ppc-static.

llvm-svn: 26315

Fixed some existing bugs (wrong predicates, prefixes) at the same time.

llvm-svn: 26310

llvm-svn: 26308

llvm-svn: 26305

advantage of fisttpll.

llvm-svn: 26288

llvm-svn: 26273

llvm-svn: 26260

llvm-svn: 26259

and SUBE nodes that actually expose what's going on and allow for
significant simplifications in the targets.

llvm-svn: 26255

llvm-svn: 26246

and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.

llvm-svn: 26238

Turns them into calls to memset / memcpy if 1) buffer(s) are not DWORD aligned,
2) size is not known to be greater or equal to some minimum value (currently 128).

llvm-svn: 26224

llvm-svn: 26174

maxStoresPerMemMove. Although the last one is not used.

llvm-svn: 26172

CALLSEQ_START nodes.

llvm-svn: 26143

Also fixed a function stub bug. Added weak and linkonce support for
x86 Linux.

llvm-svn: 26038

flag so it can be flagged to a FST.

llvm-svn: 25953

llvm-svn: 25894

of the SELECT_CC, BR_CC, and BRTWOWAY_CC nodes.

llvm-svn: 25875

value or the chain going into the load.

llvm-svn: 25863

ensure the memory location has not been clobbered.

llvm-svn: 25861

it is already available in memory, do a fld directly from there.

llvm-svn: 25859

- Use XORP* to implement fneg.

llvm-svn: 25857

* Rename hasSSE -> hasSSE1 to avoid my continual confusion with 'has any SSE'.
* Add inline asm constraint specification.

llvm-svn: 25854

llvm-svn: 25831

the order of the compare operands and generate SETOGT, SETOGE, SETUGE, and
SETULE instead.

llvm-svn: 25824

llvm-svn: 25818

conversions. SSE does not have instructions to handle these tasks.

llvm-svn: 25817

Move MaskedValueIsZero from the DAGCombiner to the TargetLowering interface,making isMaskedValueZeroForTargetNode simpler, and useable from other partsof the compiler.

llvm-svn: 25803

llvm-svn: 25798

instead of lying and saying we have it.

llvm-svn: 25775

'fpimm' in .td files is now TargetConstantFP.

llvm-svn: 25771