================
@@ -1469,6 +1465,47 @@ void VPReplicateRecipe::print(raw_ostream &O, const
Twine &Indent,
}
#endif
+Value *VPScalarCastRecipe ::generate(VPTransformState &State, unsigned Part) {
+ assert(vputils::onlyFirstLaneUsed(this) &&
+ "Codegen only implemented for first lane only.");
+ switch (Opcode) {
+ case Instruction::SExt:
+ case Instruction::ZExt:
+ case Instruction::Trunc: {
+ Value *Op = State.get(getOperand(0), VPIteration(Part, 0));
+ return State.Builder.CreateCast(Instruction::CastOps(Opcode), Op,
ResultTy);
+ }
+ default:
+ llvm_unreachable("opcode not implemented yet");
+ }
+}
+
+void VPScalarCastRecipe ::execute(VPTransformState &State) {
+ bool UniformAcrossUFs = all_of(operands(), [](VPValue *Op) {
+ return Op->isDefinedOutsideVectorRegions();
+ });
+ for (unsigned Part = 0; Part != State.UF; ++Part) {
+ Value *Res;
+ // Only generate a single instance, if the recipe is uniform across all
UFs.
----------------
ayalz wrote:
Only a single instance is going to be generated, in the preheader? Recipe is
uniform across all UFs by (current) definition (and even more so - invariant).
Can assert UniformAcrossUFs holds, along with onlyFirstLaneUsed.
https://github.com/llvm/llvm-project/pull/78113
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