[llvm] [ARM] Fix not saving FP when required to in frame-pointer=non-leaf. (PR #165128)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/MC/MCParser/AsmLexer.cpp llvm/lib/Target/ARM/ARMFrameLowering.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/MC/MCParser/AsmLexer.cpp b/llvm/lib/MC/MCParser/AsmLexer.cpp
index 8062ce88a..a6188f067 100644
--- a/llvm/lib/MC/MCParser/AsmLexer.cpp
+++ b/llvm/lib/MC/MCParser/AsmLexer.cpp
@@ -836,9 +836,9 @@ AsmToken AsmLexer::LexToken() {
 
   if (isAtStartOfComment(TokStart)) {
     StringRef CommentString = MAI.getCommentString();
-    // For multi-char comment strings, advance CurPtr only if we matched the full
-    // string. This stops us from accidentally eating the newline if the current
-    // line ends in a single comment char.
+    // For multi-char comment strings, advance CurPtr only if we matched the
+    // full string. This stops us from accidentally eating the newline if the
+    // current line ends in a single comment char.
     if (CommentString.size() > 1 &&
         StringRef(TokStart, CommentString.size()) == CommentString) {
       CurPtr += CommentString.size() - 1;

``````````

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https://github.com/llvm/llvm-project/pull/165128