hzfan commented on a change in pull request #7759:
URL: https://github.com/apache/tvm/pull/7759#discussion_r603032508
##########
File path: src/arith/iter_affine_map.cc
##########
@@ -1028,5 +1028,61 @@ PrimExpr IterMapRewriter::VisitExpr_(const FloorModNode*
op) {
}
}
+/*! * \brief Given an IterVarMapExpr, transform it to normal PrimExpr. */
+class IterMapToExprNormalizer {
+ public:
+ explicit IterMapToExprNormalizer(Analyzer* analyzer) : analyzer_(analyzer) {}
+
+ PrimExpr Convert(const IterMapExpr& expr) {
+ if (const auto* op = expr.as<IterSplitExprNode>()) {
+ return ConvertIterSplitExpr(GetRef<IterSplitExpr>(op));
+ } else if (const auto* op = expr.as<IterSumExprNode>()) {
+ return ConvertIterSumExpr(GetRef<IterSumExpr>(op));
+ } else {
+ ICHECK(expr.defined());
+ LOG(FATAL) << "Unknown IterMapExpr type " << expr->GetTypeKey();
+ return 0;
+ }
+ }
+
+ PrimExpr ConvertIterSumExpr(const IterSumExpr& expr) {
+ PrimExpr res = 0;
+ for (const IterSplitExpr& arg : expr->args) {
+ res += ConvertIterSplitExpr(arg);
+ }
+ res += expr->base;
+ return res;
+ }
+
+ PrimExpr ConvertIterSplitExpr(const IterSplitExpr& expr) {
+ PrimExpr source;
+ if (const auto* op = expr->source->source.as<VarNode>()) {
+ source = GetRef<Var>(op);
+ } else if (const auto& op = expr->source->source.as<IterSumExprNode>()) {
Review comment:
```suggestion
} else if (const auto* op = expr->source->source.as<IterSumExprNode>()) {
```
##########
File path: src/arith/iter_affine_map.cc
##########
@@ -1028,5 +1028,61 @@ PrimExpr IterMapRewriter::VisitExpr_(const FloorModNode*
op) {
}
}
+/*! * \brief Given an IterVarMapExpr, transform it to normal PrimExpr. */
+class IterMapToExprNormalizer {
+ public:
+ explicit IterMapToExprNormalizer(Analyzer* analyzer) : analyzer_(analyzer) {}
+
+ PrimExpr Convert(const IterMapExpr& expr) {
+ if (const auto* op = expr.as<IterSplitExprNode>()) {
+ return ConvertIterSplitExpr(GetRef<IterSplitExpr>(op));
+ } else if (const auto* op = expr.as<IterSumExprNode>()) {
+ return ConvertIterSumExpr(GetRef<IterSumExpr>(op));
+ } else {
+ ICHECK(expr.defined());
+ LOG(FATAL) << "Unknown IterMapExpr type " << expr->GetTypeKey();
+ return 0;
+ }
+ }
+
+ PrimExpr ConvertIterSumExpr(const IterSumExpr& expr) {
+ PrimExpr res = 0;
+ for (const IterSplitExpr& arg : expr->args) {
+ res += ConvertIterSplitExpr(arg);
+ }
+ res += expr->base;
+ return res;
+ }
+
+ PrimExpr ConvertIterSplitExpr(const IterSplitExpr& expr) {
+ PrimExpr source;
+ if (const auto* op = expr->source->source.as<VarNode>()) {
+ source = GetRef<Var>(op);
+ } else if (const auto& op = expr->source->source.as<IterSumExprNode>()) {
+ source = ConvertIterSumExpr(GetRef<IterSumExpr>(op));
+ }
Review comment:
Do we need to LOG(FATAL) if it falls in neither of the if?
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