Implement count leading zeros (ctlz), count trailing zeros (cttz), and count
population (ctpop). Generic lowering is implemented, however only promotion
is implemented for SelectionDAG at the moment.
More coming soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21676 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPC64ISelPattern.cpp b/lib/Target/PowerPC/PPC64ISelPattern.cpp
index 8614a24..25fbb98 100644
--- a/lib/Target/PowerPC/PPC64ISelPattern.cpp
+++ b/lib/Target/PowerPC/PPC64ISelPattern.cpp
@@ -68,6 +68,11 @@
setOperationAction(ISD::SREM, MVT::i64, Expand);
setOperationAction(ISD::UREM, MVT::i64, Expand);
+ // PowerPC has these, but they are not implemented
+ setOperationAction(ISD::CTPOP, MVT::i64, Expand);
+ setOperationAction(ISD::CTTZ , MVT::i64, Expand);
+ setOperationAction(ISD::CTTZ , MVT::i64, Expand);
+
setShiftAmountFlavor(Extend); // shl X, 32 == 0
addLegalFPImmediate(+0.0); // Necessary for FSEL
addLegalFPImmediate(-0.0); //