[flang-commits] [flang] [Flang][LoongArch] Add sign extension for i32 arguments and returns in function signatures. (PR #116146)

[via flang-commits]

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@@ -1127,6 +1127,30 @@ struct TargetLoongArch64 : public GenericTarget<TargetLoongArch64> {
     }
     return marshal;
   }
+
+  CodeGenSpecifics::Marshalling
+  integerArgumentType(mlir::Location loc,
+                      mlir::IntegerType argTy) const override {
+    if (argTy.getWidth() == 32) {
+      // LA64 LP64D ABI requires unsigned 32 bit integers to be sign extended.
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jeanPerier wrote:

The comment and PR talk about "unsigned 32 bit integers", but the check above only checks that this is a "32 bit integer", doesn't the "unsigned" aspect of `argTy` also needs to be checked somehow?

https://github.com/llvm/llvm-project/pull/116146