by Anton Korobeynikov!  This is a step towards closing PR786.

llvm-svn: 28447

llvm-svn: 28445

change.  This fixes PowerPC/fnegsel.ll.

llvm-svn: 28443

llvm-svn: 28423

This is part of the on-going work on PR 761.

llvm-svn: 28414

llvm-svn: 28378

llvm-svn: 28368

llvm-svn: 28355

enough to be autogenerated.

llvm-svn: 28354

the copyto/fromregs instead of making the PPCISD::CALL selection code create
them.  This vastly simplifies the selection code, and moves the ABI handling
parts into one place.

llvm-svn: 28346

1. Rearrange code a bit so that the special case doesn't require indenting lots
   of code.
2. Add comments describing PPC calling convention.
3. Only round up to 56-bytes of stack space for an outgoing call if the callee
   is varargs.  This saves a bit of stack space.

llvm-svn: 28342

llvm-svn: 28341

ISD::CALL node, then custom lower that.  This means that we only have to handle
LEGAL call operands/results, not every possible type.  This allows us to
simplify the call code, shrinking it by about 1/3.

llvm-svn: 28339

llvm-svn: 28335

llvm-svn: 28334

llvm-svn: 28333

handling.  This makes the lower argument code significantly simpler (we
only need to handle legal argument types).

Incidentally, this also implements support for vector argument registers,
so long as they are not on the stack.

llvm-svn: 28331

llvm-svn: 28311

llvm-svn: 28303

llvm-svn: 28264

llvm-svn: 28248

Nate, please verify that if InsertMask is 0, rlwimi shouldn't be used.
This fixes the crash and causes no PPC testsuite regressions.

llvm-svn: 28243

TargetData.h.  This should make recompiles a bit faster with my current
TargetData tinkering.

llvm-svn: 28238

really a bad codegen bug that LLC happens to get lucky with. I must chat with
Nate for the proper fix.

llvm-svn: 28213

llvm-svn: 28204

llvm-svn: 28184

llvm-svn: 28172

llvm-svn: 28170

llvm-svn: 28169

llvm-svn: 28168

llvm-svn: 28162

still a couple missed optimizations, but we now generate all the possible
rlwimis for multiple inserts into the same bitfield.  More regression tests
to come.

llvm-svn: 28156

using them.

llvm-svn: 28134

llvm-svn: 28118

llvm-svn: 28104

llvm-svn: 28102

llvm-svn: 28099

Loading and storing off R0 isn't what we wanted.  Also, taking some CR's out of
CRRC seems to cause failures as well.  Further investigation is required.

llvm-svn: 28097

llvm-svn: 28093

llvm-svn: 28091