tqchen commented on code in PR #17765:
URL: https://github.com/apache/tvm/pull/17765#discussion_r2003689582
##########
src/arith/rewrite_simplify.cc:
##########
@@ -1230,7 +1230,8 @@ PrimExpr RewriteSimplifier::Impl::VisitExpr_(const
FloorModNode* op) {
TVM_TRY_REWRITE_IF(floormod(x + y * c1, c2), floormod(x + y * floormod(c1,
c2), c2),
c2.Eval()->value > 0);
- TVM_TRY_REWRITE_IF(floormod(x * c1, x * c2), x * floormod(c1, c2),
c2.Eval()->value != 0);
+ TVM_TRY_REWRITE_IF(matches_one_of(floormod(x * c1, x * c2), floormod(c1 *
x, c2 * x)),
+ floormod(c1, c2), c2.Eval()->value != 0);
Review Comment:
I am a bit surprised to see if we need c * x case since canonical simplify
will move most cases to x * c, would be good to understand why original flow
fails in this case
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