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.
llvm-svn: 21676
diff --git a/llvm/lib/Target/X86/X86ISelPattern.cpp b/llvm/lib/Target/X86/X86ISelPattern.cpp
index 8b3f31c..0737842 100644
--- a/llvm/lib/Target/X86/X86ISelPattern.cpp
+++ b/llvm/lib/Target/X86/X86ISelPattern.cpp
@@ -64,6 +64,9 @@
setOperationAction(ISD::FP_ROUND_INREG , MVT::f32 , Expand);
setOperationAction(ISD::SEXTLOAD , MVT::i1 , Expand);
setOperationAction(ISD::SREM , MVT::f64 , Expand);
+ setOperationAction(ISD::CTPOP , MVT::i32 , Expand);
+ setOperationAction(ISD::CTTZ , MVT::i32 , Expand);
+ setOperationAction(ISD::CTTZ , MVT::i32 , Expand);
if (!UnsafeFPMath) {
setOperationAction(ISD::FSIN , MVT::f64 , Expand);