llvm-svn: 53248

Do not CSE DEBUG_LOC, DBG_LABEL, DBG_STOPPOINT, DECLARE, and EH_LABEL SDNode's. This improves compile time slightly at -O0 -g.

llvm-svn: 53246

soft float: experiments show that targets aren't
expecting this for results or for operands.  Add
support select/select_cc result soft float and
correct operand soft float for these.

llvm-svn: 53245

in LegalizeTypes.

llvm-svn: 53244

llvm-svn: 53243

llvm-svn: 53242

out every volatile load and store.  This is useful for tracking 
down insane volatile memory bugs.

llvm-svn: 53241

into phis.  This is actually the same bug as PR2262 /
2008-04-29-VolatileLoadDontMerge.ll, but I missed checking the first 
predecessor for multiple successors.  Testcase here:
InstCombine/2008-07-08-VolatileLoadMerge.ll

llvm-svn: 53240

llvm-svn: 53239

llvm-svn: 53238

llvm-svn: 53237

the name prefix when we change them from internal to external.  This allows bugpointing
of codegen miscompilations to work more reliably on Darwin.

llvm-svn: 53236

llvm-svn: 53235

llvm-svn: 53234

llvm-svn: 53233

soft float.

llvm-svn: 53231

llvm-svn: 53230

parameter attributes.

llvm-svn: 53228

llvm-svn: 53227

llvm-svn: 53226

argument number.

llvm-svn: 53225

Call and Invoke in a single method instead of having it hardcoded in multiple
places.

llvm-svn: 53224

call attributes.

llvm-svn: 53223

llvm-svn: 53222

llvm-svn: 53221

1) evaluate [v]fcmp true/false with undefs to true or false instead
   of undef.
2) fix vector comparisons with undef to return a vector result instead 
   of i1
3) fix vector comparisons with evaluatable results to return vector
   true/false instead of i1 true/false (PR2529)

llvm-svn: 53220

llvm-svn: 53219

llvm-svn: 53218

llvm-svn: 53217

llvm-svn: 53216

llvm-svn: 53215

llvm-svn: 53213

MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "Emit" phase of scheduling, as well as later phases
in CodeGen. Combined with other changes, this speeds up the
"instruction selection" phase of CodeGen by 10% in some cases.

llvm-svn: 53212

and reused across SelectionDAGs.

This drastically reduces the number of calls to malloc/free made during
instruction selection, and improves memory locality.

llvm-svn: 53211

for handling bookkeeping for deleted objects, as well as the alist class
template, for keeping lists of objects allocated from Recyclers, and some
related utilities.

llvm-svn: 53210

llvm-svn: 53209

ATT asm printer just print register AsmName's instead of calling tolower on each charater of Name. This speeds it up by 10%.

llvm-svn: 53208

TargetRegisterDesc::Name field is the same as the abstract register name. There is no need for targets to specify register names in addition to their AsmName's.

llvm-svn: 53207

llvm-svn: 53206

getTargetNode and SelectNodeTo to reduce duplication, and to
make some of the getTargetNode code available to SelectNodeTo.
Use SelectNodeTo instead of getTargetNode in several new
interesting cases, as it mutates nodes in place instead of
creating new ones.

This triggers some scheduling behavior differences due to nodes
being presented to the scheduler in a different order. Some of the
arbitrary scheduling decisions it makes are now arbitrarily made
differently. This is visible in CodeGen/PowerPC/LargeAbsoluteAddr.ll,
where a trivial scheduling difference led to a trivial register
allocation difference.

llvm-svn: 53203