[llvm] [Verifier] Clarify supported storage bit width for apfloat conversions (PR #209174)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/include/llvm/ADT/APFloat.h llvm/lib/IR/Verifier.cpp llvm/lib/Support/APFloat.cpp llvm/unittests/ADT/APFloatTest.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/include/llvm/ADT/APFloat.h b/llvm/include/llvm/ADT/APFloat.h
index 0aac343ba..ce94e0bac 100644
--- a/llvm/include/llvm/ADT/APFloat.h
+++ b/llvm/include/llvm/ADT/APFloat.h
@@ -416,8 +416,8 @@ public:
 
   /// Returns the size in bits of a valid arbitrary floating-point format
   /// string, or 0 if the string is not a valid format. Covers every format
-  /// accepted by isValidArbitraryFPFormat, not only those getArbitraryFPSemantics
-  /// can currently lower.
+  /// accepted by isValidArbitraryFPFormat, not only those
+  /// getArbitraryFPSemantics can currently lower.
   LLVM_ABI static unsigned getArbitraryFPFormatSizeInBits(StringRef Format);
 
   /// Returns the fltSemantics for a given arbitrary FP format string,

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https://github.com/llvm/llvm-project/pull/209174