[llvm] [KnownFPClass] Fix KnownFPClass::frexp subnormal mode handling (PR #219114)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Analysis/ValueTracking.cpp llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp llvm/lib/Support/KnownFPClass.cpp llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp llvm/unittests/CodeGen/GlobalISel/KnownFPClassTest.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp b/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
index 578614c3b..a866a8a95 100644
--- a/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
@@ -1947,8 +1947,7 @@ void GISelValueTracking::computeKnownFPClass(Register R,
       InterestedSrcs |= fcNegSubnormal;
 
     KnownFPClass KnownSrc;
-    computeKnownFPClass(Src, DemandedElts, InterestedSrcs, KnownSrc,
-                        Depth + 1);
+    computeKnownFPClass(Src, DemandedElts, InterestedSrcs, KnownSrc, Depth + 1);
     DenormalMode Mode =
         MF->getDenormalMode(getFltSemanticForLLT(DstTy.getScalarType()));
     Known = KnownFPClass::frexp_mant(KnownSrc, Mode);

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https://github.com/llvm/llvm-project/pull/219114