Added TLI hook for isFPExtFree. Some of the FMA combine heuristics are now guarded with that hook.
llvm-svn: 225795
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 30f08d0..2157003 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -9817,6 +9817,11 @@
return TargetLowering::isZExtFree(Val, VT2);
}
+bool PPCTargetLowering::isFPExtFree(EVT VT) const {
+ assert(VT.isFloatingPoint());
+ return true;
+}
+
bool PPCTargetLowering::isLegalICmpImmediate(int64_t Imm) const {
return isInt<16>(Imm) || isUInt<16>(Imm);
}
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index db5a3e4..b171b16 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -528,6 +528,8 @@
bool isZExtFree(SDValue Val, EVT VT2) const override;
+ bool isFPExtFree(EVT VT) const override;
+
/// \brief Returns true if it is beneficial to convert a load of a constant
/// to just the constant itself.
bool shouldConvertConstantLoadToIntImm(const APInt &Imm,