(tvm) branch main updated: [Fix][TIRx] Restore IterVar span reflection (#20214)

[tlopex]

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The following commit(s) were added to refs/heads/main by this push:
     new 30a1d2ef41 [Fix][TIRx] Restore IterVar span reflection (#20214)
30a1d2ef41 is described below

commit 30a1d2ef41ae9c0c5592971a6e4ded74e39029bd
Author: Shushi Hong <820958...@qq.com>
AuthorDate: Sat Aug 29 00:56:38 2026 -0400

    [Fix][TIRx] Restore IterVar span reflection (#20214)
    
    This PR restores the reflection metadata for `IterVarNode::span`, which
    was omitted during the migration from VisitAttrs to the new reflection
    mechanism.
    The source span remains optional and is excluded from structural
    equality and hashing, matching the original behavior.
---
 include/tvm/tirx/var.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/tvm/tirx/var.h b/include/tvm/tirx/var.h
index 28e322b3e3..1886aaca51 100644
--- a/include/tvm/tirx/var.h
+++ b/include/tvm/tirx/var.h
@@ -176,7 +176,9 @@ class IterVarNode : public PrimExprConvertibleNode {
         .def_ro("dom", &IterVarNode::dom)
         .def_ro("var", &IterVarNode::var, 
refl::AttachFieldFlag::SEqHashDefRecursive())
         .def_ro("iter_type", &IterVarNode::iter_type)
-        .def_ro("thread_tag", &IterVarNode::thread_tag);
+        .def_ro("thread_tag", &IterVarNode::thread_tag)
+        .def_ro("span", &IterVarNode::span, refl::DefaultValue(Span()),
+                refl::AttachFieldFlag::SEqHashIgnore());
   }
 
   static constexpr TVMFFISEqHashKind _type_s_eq_hash_kind = 
kTVMFFISEqHashKindTreeNode;