[clang] [llvm] [APFloat] Add support for f8E3M4 IEEE 754 type (PR #99698)

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``````````bash
git-clang-format --diff a8b90c835291df9a6c152fd32de666192aa0da77 fdcc285cf016d2dfd7883ad6fd100d676ff9ff52 --extensions h,cpp -- clang/lib/AST/MicrosoftMangle.cpp llvm/include/llvm/ADT/APFloat.h llvm/lib/Support/APFloat.cpp llvm/unittests/ADT/APFloatTest.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp
index 8a9488165b..be675bb7fe 100644
--- a/llvm/unittests/ADT/APFloatTest.cpp
+++ b/llvm/unittests/ADT/APFloatTest.cpp
@@ -6661,7 +6661,8 @@ TEST(APFloatTest, Float8E3M4ToDouble) {
       APFloat::getSmallestNormalized(APFloat::Float8E3M4(), true);
   EXPECT_EQ(-0x1.p-2, NegSmallest.convertToDouble());
 
-  APFloat PosSmallestDenorm = APFloat::getSmallest(APFloat::Float8E3M4(), false);
+  APFloat PosSmallestDenorm =
+      APFloat::getSmallest(APFloat::Float8E3M4(), false);
   EXPECT_TRUE(PosSmallestDenorm.isDenormal());
   EXPECT_EQ(0x1.p-6, PosSmallestDenorm.convertToDouble());
   APFloat NegSmallestDenorm = APFloat::getSmallest(APFloat::Float8E3M4(), true);
@@ -7008,7 +7009,8 @@ TEST(APFloatTest, Float8E3M4ToFloat) {
       APFloat::getSmallestNormalized(APFloat::Float8E3M4(), true);
   EXPECT_EQ(-0x1.p-2, NegSmallest.convertToFloat());
 
-  APFloat PosSmallestDenorm = APFloat::getSmallest(APFloat::Float8E3M4(), false);
+  APFloat PosSmallestDenorm =
+      APFloat::getSmallest(APFloat::Float8E3M4(), false);
   EXPECT_TRUE(PosSmallestDenorm.isDenormal());
   EXPECT_EQ(0x1.p-6, PosSmallestDenorm.convertToFloat());
   APFloat NegSmallestDenorm = APFloat::getSmallest(APFloat::Float8E3M4(), true);

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https://github.com/llvm/llvm-project/pull/99698