ekalda commented on code in PR #16893:
URL: https://github.com/apache/tvm/pull/16893#discussion_r1567592059
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src/tir/transforms/vectorize_loop.cc:
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@@ -725,17 +728,33 @@ class Vectorizer : public StmtMutator, public
ExprFunctor<PrimExpr(const PrimExp
class LoopVectorizer : public StmtMutator {
public:
+ LoopVectorizer(PrimFunc f) {
+ auto target = f->attrs.GetAttr<tvm::Target>(tvm::attr::kTarget);
+ if (target.defined()) {
+ target_ = Downcast<Target>(target);
+ has_sve_ = target_->GetFeature<Bool>("has_sve").value_or(Bool(false));
+ }
+ }
+
Stmt VisitStmt_(const ForNode* op) final {
if (op->kind == ForKind::kVectorized) {
+ auto* extent_as_int = op->extent.as<IntImmNode>();
+ if (!extent_as_int || extent_as_int->value < 1) {
+ bool is_scalable_expr = CheckContains::ExprContains(op->extent,
arith::IsVScaleCall);
+ ICHECK(is_scalable_expr && has_sve_)
+ << "Failed to vectorize loop with extent " << op->extent << " for
target " << target_;
+ }
ICHECK(is_zero(op->min));
return Vectorizer(op->loop_var, op->extent)(op->body);
} else {
return StmtMutator::VisitStmt_(op);
}
}
-};
-Stmt VectorizeLoop(Stmt stmt) { return LoopVectorizer()(std::move(stmt)); }
Review Comment:
Is this function necessary?
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