[CodeGen] Default CTTZ_ZERO_UNDEF/CTLZ_ZERO_UNDEF to Expand in TargetLoweringBase. This is what the majority of the targets want and removes a bunch of code. Set it to Legal explicitly in the few cases where that's the desired behavior.
llvm-svn: 267853
diff --git a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
index fa1e275..f49a984 100644
--- a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
@@ -1868,14 +1868,6 @@
setOperationAction(ISD::CTLZ, MVT::i16, Promote);
setOperationAction(ISD::CTTZ, MVT::i8, Promote);
setOperationAction(ISD::CTTZ, MVT::i16, Promote);
- setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i8, Expand);
- setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i16, Expand);
- setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
- setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
- setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i8, Expand);
- setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i16, Expand);
- setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
- setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
// In V5, popcount can count # of 1s in i64 but returns i32.
// On V4 it will be expanded (set later).
@@ -1955,8 +1947,7 @@
ISD::SMUL_LOHI, ISD::UMUL_LOHI,
// Logical/bit:
ISD::AND, ISD::OR, ISD::XOR, ISD::ROTL, ISD::ROTR,
- ISD::CTPOP, ISD::CTLZ, ISD::CTTZ, ISD::CTLZ_ZERO_UNDEF,
- ISD::CTTZ_ZERO_UNDEF,
+ ISD::CTPOP, ISD::CTLZ, ISD::CTTZ,
// Floating point arithmetic/math functions:
ISD::FADD, ISD::FSUB, ISD::FMUL, ISD::FMA, ISD::FDIV,
ISD::FREM, ISD::FNEG, ISD::FABS, ISD::FSQRT, ISD::FSIN,