================
@@ -6470,6 +6540,84 @@ static SDValue lowerAddrSpaceCast(SDValue Op,
SelectionDAG &DAG) {
return Op;
}
+SDValue SystemZTargetLowering::lowerFP_EXTEND(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDValue In = Op.getOperand(Op->isStrictFPOpcode() ? 1 : 0);
+ if (In.getSimpleValueType() != MVT::f16)
+ return Op; // Legal
+ return SDValue(); // Let legalizer emit the libcall.
+}
+
+// Shift the lower 2 bytes of Op to the left in order to insert into the
+// upper 2 bytes of the FP register.
+static SDValue convertToF16(SDValue Op, SelectionDAG &DAG) {
----------------
uweigand wrote:
Huh. Now you've extracted these subroutines, but there's still only used in
one place. Wasn't the intent to use those for BITCAST in the no-vector case
(this logic would still be preferable over an in-memory transfer).
https://github.com/llvm/llvm-project/pull/109164
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