jwfromm commented on code in PR #12717:
URL: https://github.com/apache/tvm/pull/12717#discussion_r966384283
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src/tir/schedule/primitive/compute_inline.cc:
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@@ -571,6 +596,34 @@ class ReverseComputeInliner : public BaseInliner {
using BaseInliner::VisitExpr_;
using BaseInliner::VisitStmt_;
+ /*! \brief Generate the predicate after inlining based on the consumer
predicate */
+ PrimExpr BuildInlinedConsumerPredicate(const BlockRealizeNode*
producer_block_realize) {
+ // Bind the producer block iter domains for simplification
+ Map<Var, PrimExpr> subst_map;
+ for (int i = 0, n = producer_block_realize->iter_values.size(); i < n;
++i) {
+ const IterVar& iter = producer_block_realize->block->iter_vars[i];
+ analyzer.Bind(iter->var, Range::FromMinExtent(iter->dom->min,
iter->dom->extent));
+ subst_map.Set(iter->var, producer_block_realize->iter_values[i]);
+ }
+ // Substitute the consumer block iters with the corresponding iters in the
producer blocks
+ PrimExpr predicate = Substituter(this)(consumer_predicate_);
+ // Simplify the predicate using the producer block iter domains
+ predicate = analyzer.Simplify(predicate);
Review Comment:
Just for my understanding, how does this bit work? I'm having a hard time
seeing how the domain of consumer_predicate is compared to the producer domain
through this substitution.
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