Bitcasts between FP and INT values using direct moves
This patch corresponds to review:
http://reviews.llvm.org/D15286
This patch was meant to land in revision 255246, but I accidentally uploaded
the patch that corresponds to http://reviews.llvm.org/D15372 in that revision
accidentally.
Thereby, this patch is the actual Bitcasts using direct moves patch, whereas
http://reviews.llvm.org/rL255246 actually corresponds to
http://reviews.llvm.org/D15372.
llvm-svn: 255649
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 8788382..c84248c 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -255,10 +255,17 @@
setOperationAction(ISD::SINT_TO_FP, MVT::i32, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
- setOperationAction(ISD::BITCAST, MVT::f32, Expand);
- setOperationAction(ISD::BITCAST, MVT::i32, Expand);
- setOperationAction(ISD::BITCAST, MVT::i64, Expand);
- setOperationAction(ISD::BITCAST, MVT::f64, Expand);
+ if (Subtarget.hasDirectMove()) {
+ setOperationAction(ISD::BITCAST, MVT::f32, Legal);
+ setOperationAction(ISD::BITCAST, MVT::i32, Legal);
+ setOperationAction(ISD::BITCAST, MVT::i64, Legal);
+ setOperationAction(ISD::BITCAST, MVT::f64, Legal);
+ } else {
+ setOperationAction(ISD::BITCAST, MVT::f32, Expand);
+ setOperationAction(ISD::BITCAST, MVT::i32, Expand);
+ setOperationAction(ISD::BITCAST, MVT::i64, Expand);
+ setOperationAction(ISD::BITCAST, MVT::f64, Expand);
+ }
// We cannot sextinreg(i1). Expand to shifts.
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);