Commit Graph

3 Commits

Author SHA1 Message Date
Tom Stellard 567f886eb0 DAGCombiner: Avoid generating illegal vector INT_TO_FP nodes
DAGCombiner::reduceBuildVecConvertToConvertBuildVec() was making two
mistakes:

1. It was checking the legality of scalar INT_TO_FP nodes and then generating
vector nodes.

2. It was passing the result value type to
TargetLoweringInfo::getOperationAction() when it should have been
passing the value type of the first operand.

llvm-svn: 171420
2013-01-02 22:13:01 +00:00
Michael Liao 5922979e49 Teach DAG combine to fold (buildvec (Xint2fp x)) to (Xint2fp (buildvec x))
- If more than 1 elemennts are defined and target supports the vectorized
  conversion, use the vectorized one instead to reduce the strength on
  conversion operation.

llvm-svn: 166546
2012-10-24 04:14:18 +00:00
Michael Liao c5af149e70 Add custom conversion from v2u32 to v2f32 in 32-bit mode
- As there's no 64-bit GPRs in 32-bit mode, a custom conversion from v2u32 to
  v2f32 is added to improve the efficiency of the code generated.

llvm-svn: 166545
2012-10-24 04:09:32 +00:00