[llvm] [LoongArch] Introduce `32s` target feature for LA32S ISA extensions (PR #139695)

[via llvm-commits]

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@@ -32,6 +32,13 @@ def IsLA32
 defvar LA32 = DefaultMode;
 def LA64 : HwMode<"+64bit", [IsLA64]>;
 
+// LoongArch 32-bit is divided into two variants, the reduced 32-bit variant
+// (LA32R) and the standard 32-bit variant (LA32S).
+def Feature32S
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heiher wrote:

Sure, sounds good.

https://github.com/llvm/llvm-project/pull/139695