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[Dynamic Shape] Use SizeVar instead of Var when convert Any in the GetShape function #8555

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merged 3 commits into from
Jul 30, 2021
Merged

[Dynamic Shape] Use SizeVar instead of Var when convert Any in the GetShape function #8555

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c51bf91
use sizevar when convert any to tir
lygztq Jul 26, 2021
bf33799
Merge remote-tracking branch 'origin/main' into any-to-sizevar
lygztq Jul 27, 2021
3e81638
Merge remote-tracking branch 'origin/main' into any-to-sizevar
lygztq Jul 30, 2021
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3 changes: 3 additions & 0 deletions include/tvm/tir/expr.h
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Expand Up @@ -1126,6 +1126,9 @@ class AnyNode : public PrimExprNode {
/*! \brief Convert to var. */
Var ToVar() const { return Var("any_dim", DataType::Int(32)); }

/*! \brief Convert to SizeVar. */
SizeVar ToSizeVar() const { return SizeVar("any_dim", DataType::Int(32)); }

static constexpr const char* _type_key = "tir.Any";
TVM_DECLARE_FINAL_OBJECT_INFO(AnyNode, PrimExprNode);
};
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3 changes: 2 additions & 1 deletion src/relay/backend/te_compiler_cache.cc
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Expand Up @@ -98,7 +98,8 @@ Array<IndexExpr> GetShape(const Array<IndexExpr>& shape) {
res.push_back(val);
#endif // TVM_INDEX_DEFAULT_I64
} else if (val->IsInstance<tir::AnyNode>()) {
res.push_back(val.as<tir::AnyNode>()->ToVar());
// currently all 'any' we meet in shape function are non-negative.
res.push_back(val.as<tir::AnyNode>()->ToSizeVar());
} else {
res.push_back(val);
}
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