[llvm] [KnownFPClass] Infer signs of finite nonzero fdiv results (PR #214912)

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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/unittests/CodeGen/GlobalISel/KnownFPClassTest.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/unittests/CodeGen/GlobalISel/KnownFPClassTest.cpp b/llvm/unittests/CodeGen/GlobalISel/KnownFPClassTest.cpp
index e63bcb2e5..8083f0a11 100644
--- a/llvm/unittests/CodeGen/GlobalISel/KnownFPClassTest.cpp
+++ b/llvm/unittests/CodeGen/GlobalISel/KnownFPClassTest.cpp
@@ -1194,8 +1194,7 @@ TEST_F(AArch64GISelMITest, TestFPClassFDivSqrt) {
   GISelValueTracking Info(*MF);
   KnownFPClass Known = Info.computeKnownFPClass(SrcReg);
 
-  EXPECT_EQ(fcAllFlags & ~(fcNegNormal | fcNegSubnormal),
-            Known.KnownFPClasses);
+  EXPECT_EQ(fcAllFlags & ~(fcNegNormal | fcNegSubnormal), Known.KnownFPClasses);
   EXPECT_EQ(std::nullopt, Known.SignBit);
 }
 
@@ -1223,8 +1222,7 @@ TEST_F(AArch64GISelMITest, TestFPClassFDivNegSqrtNeg) {
   GISelValueTracking Info(*MF);
   KnownFPClass Known = Info.computeKnownFPClass(SrcReg, fcPositive);
 
-  EXPECT_EQ(fcAllFlags & ~(fcPosNormal | fcPosSubnormal),
-            Known.KnownFPClasses);
+  EXPECT_EQ(fcAllFlags & ~(fcPosNormal | fcPosSubnormal), Known.KnownFPClasses);
   EXPECT_EQ(std::nullopt, Known.SignBit);
 }
 

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https://github.com/llvm/llvm-project/pull/214912