[clang] [llvm] [ARM] Fix -mno-omit-leaf-frame-pointer flag doesn't works on 32-bit ARM (PR #109628)

[via cfe-commits]

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@@ -125,6 +125,11 @@ Changes to the ARM Backend
   the required alignment space with a sequence of `0x0` bytes (the requested
   fill value) rather than NOPs.
 
+* The default behavior for frame pointers in leaf functions has been updated. When
+  `-fno-omit-frame-pointer` is specified, the frame pointer (FP) will now be retained
+  in leaf functions by default. To eliminate the frame pointer in leaf functions, the
+  `-momit-leaf-frame-pointer` option must be explicitly provided.
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guoxin049 wrote:

OK，Could you kindly review the changes I've made? Thank you.

https://github.com/llvm/llvm-project/pull/109628