Mousius commented on code in PR #13522:
URL: https://github.com/apache/tvm/pull/13522#discussion_r1038058303
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src/target/source/codegen_c_host.cc:
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@@ -93,18 +94,46 @@ void CodeGenCHost::AddFunction(const PrimFunc& f) {
}
}
-void CodeGenCHost::PrintFuncPrefix() { // NOLINT(*)
- stream << "#ifdef __cplusplus\n"
- << "extern \"C\"\n"
- << "#endif\n"
- << "TVM_DLL int32_t";
+void CodeGenCHost::GenerateForwardFunctionDeclarations(String global_symbol,
+ const Array<PrimExpr>&
args) {
+ for (auto& func_already_defined : GetFunctionNames()) {
+ if (global_symbol == func_already_defined) {
+ return;
+ }
+ }
+ this->PrintFuncPrefix(fwd_decl_stream);
+ fwd_decl_stream << " " << global_symbol << "(";
+ for (size_t i = 1; i < args.size(); ++i) {
Review Comment:
Wouldn't it be better to share the same logic though? Then we can guarantee
the forward declarations will always match the function prints later? Otherwise
we'd have to update in both places should we change how we print the function
definition.
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