[flang-commits] [flang] [flang][driver] Improve diagnostic for assembly inputs (PR #174316)

[Tarun Prabhu via flang-commits]

================
@@ -147,6 +147,31 @@ int main(int argc, const char **argv) {
   llvm::SmallVector<std::pair<int, const clang::driver::Command *>, 4>
       failingCommands;
 
+  // Reject assembly files as flang does not support assembling
+  if (c) {
+    for (const llvm::opt::Arg *arg : c->getInputArgs()) {
+      if (arg->getOption().getKind() != llvm::opt::Option::InputClass)
+        continue;
+
+      llvm::StringRef filename(arg->getValue());
+
+      // Determine file type from extension
+      clang::driver::types::ID type =
+          clang::driver::types::lookupTypeForExtension(
+              filename.rsplit('.').second);
+
+      if (type == clang::driver::types::TY_Asm ||
+          type == clang::driver::types::TY_PP_Asm) {
+
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tarunprabhu wrote:

We can probably do without the blank line here.
```suggestion
```

https://github.com/llvm/llvm-project/pull/174316