using IL, ILA, et. al. v2i64 and i64 are now supported by
  the select bits (SELB) instruction.

- Add missing comparison operations (testcase forthcoming)

- More multiclass refactoring.

llvm-svn: 47973

- select_bits.ll now fully functional now that PR1993 is closed. It was
  previously broken by refactoring in SPUInstrInfo.td and using multiclasses.
- Same for eqv.ll

llvm-svn: 47972

llvm-svn: 47969

llvm-svn: 47968

llvm-svn: 47966

llvm-svn: 47965

llvm-svn: 47962

llvm-svn: 47960

Patch by Curtis Dunham.

llvm-svn: 47959

and add some protection against creating such.

llvm-svn: 47957

were being pruned in patterns where a variable was used more than once, e.g.:

  (or (and R32C:$rA, R32C:$rC), (and R32C:$rB, (not R32C:$rC)))

In this example, $rC is used more than once and is actually significant to
instruction selection pattern matching when commuted variants are produced.
This patch scans the pattern's clauses and collects the variables, creating
a set of variables that are used more than once. TreePatternNode::isIsomorphicTo()
also understands that multiply-used variables are significant.

llvm-svn: 47950

llvm-svn: 47948

llvm-svn: 47947

llvm-svn: 47946

llvm-svn: 47945

llvm-svn: 47944

    http://www.gnu.org/software/autoconf/manual/autoconf.html#Generic-Programs

llvm-svn: 47943

llvm-svn: 47941

llvm-svn: 47940

llvm-svn: 47939

except ppc long double.  This allows us to shrink constant pool
entries for x86 long double constants, which in turn allows us to
use flds/fldl instead of fldt.

llvm-svn: 47938

all the way to float, not stopping at double.

llvm-svn: 47937

llvm-svn: 47934

llvm-svn: 47933

bug in r47928 (Int64Ty is the correct type for the constant
pool entry here) and removes the asserts, now that the code
is capable of handling i128.

llvm-svn: 47932

For x86, if sse2 is available, it's not a good idea since cvtss2sd is slower than a movsd load and it prevents load folding. On x87, it's important to shrink fp constant since fldt is very expensive.

llvm-svn: 47931

llvm-svn: 47929

llvm-svn: 47928

findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies.

llvm-svn: 47927

llvm-svn: 47924

llvm-svn: 47922

llvm-svn: 47918

class (cosmetic).  First piece of byval implementation;
this doesn't work yet.  No functional change.

llvm-svn: 47917

llvm-svn: 47916

llvm-svn: 47915

llvm-svn: 47911

llvm-svn: 47909

llvm-svn: 47908

Update test to use multiple return value directly, instead of relying on -sretpromotion.

llvm-svn: 47907

llvm-svn: 47906