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[Feature] Add PassConfig for Controlling Let Statement Inlining in Simplify Pass #1769

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Merged
LeiWang1999 merged 1 commit into from
Feb 2, 2026
Merged

[Feature] Add PassConfig for Controlling Let Statement Inlining in Simplify Pass #1769

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9 changes: 8 additions & 1 deletion src/transform/simplify.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ struct SimplifyConfigNode : public AttrsNodeReflAdapter<SimplifyConfigNode> {
bool propagate_knowns_to_simplify_expressions{};
bool convert_boolean_to_and_of_ors{};
bool apply_constraints_to_boolean_branches{};
bool enable_simplify_let_inline{true};

static void RegisterReflection() {
namespace refl = tvm::ffi::reflection;
Expand Down Expand Up @@ -61,7 +62,11 @@ struct SimplifyConfigNode : public AttrsNodeReflAdapter<SimplifyConfigNode> {
"If true, simplify each branch of AND/OR under a constraints "
"provided by the other "
"branch",
refl::DefaultValue(false));
refl::DefaultValue(false))
.def_ro("enable_simplify_let_inline",
&SimplifyConfigNode::enable_simplify_let_inline,
"If true, inline let statements when possible",
refl::DefaultValue(true));
}
TVM_FFI_DECLARE_OBJECT_INFO_FINAL("tl.transform.SimplifyConfig",
SimplifyConfigNode, BaseAttrsNode);
Expand Down Expand Up @@ -323,6 +328,8 @@ class StmtSimplifier : public IRMutatorWithAnalyzer {
}

bool CanInlineLetStmt(const LetStmtNode *op) {
if (!config_->enable_simplify_let_inline)
return false;
if (is_const_number(op->value))
return true;
if (op->value.as<VarNode>())
Expand Down
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