[clang] [llvm] [MIPS] Add support for O64 Mips ABI (PR #223990)

[Ying Huang via llvm-commits]

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@@ -104,19 +109,41 @@ class LLVM_LIBRARY_VISIBILITY MipsTargetInfo : public TargetInfo {
     return false;
   }
 
+  void setOABITypes() {
+    // TODO:  OABI's long length can differ, find a way to do this and 
+    //        propagate to datalayout string.
+
+    unsigned LongLength = 32;
+    LongWidth = LongAlign = LongLength;
+    PointerWidth = PointerAlign = LongLength;
+  }
+
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yingopq wrote:

Does we need add test in file `clang/test/Preprocessor/init-mips.c`?

https://github.com/llvm/llvm-project/pull/223990