vinx13 commented on a change in pull request #5209: [CodeGen][CUDA] Fix bugs
URL: https://github.com/apache/incubator-tvm/pull/5209#discussion_r402049736
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File path: src/target/source/codegen_cuda.cc
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@@ -352,6 +354,37 @@ void CodeGenCUDA::PrintStorageScope(
}
}
+void CodeGenCUDA::VisitExpr_(const CastNode* op, std::ostream& os) {
+ DataType from_ty = op->value.dtype();
+ DataType target_ty = op->dtype;
+ CHECK_EQ(target_ty.lanes(), from_ty.lanes());
+
+ // Emit simple C-style type conversion.
+ if (from_ty.is_scalar())
+ return CodeGenC::VisitExpr_(op, os);
+
+ // We could emit make_float4 like calls, but the emitted code looks
+ // too compact to read. Emit this as vectorized unary ops.
Review comment:
is there any difference in performance?
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