[clang] [llvm] [APFloat] Add support for f8E4M3 IEEE 754 type (PR #97179)

[Thorsten Schütt via cfe-commits]

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@@ -136,6 +136,7 @@ static constexpr fltSemantics semIEEEquad = {16383, -16382, 113, 128};
 static constexpr fltSemantics semFloat8E5M2 = {15, -14, 3, 8};
 static constexpr fltSemantics semFloat8E5M2FNUZ = {
     15, -15, 3, 8, fltNonfiniteBehavior::NanOnly, fltNanEncoding::NegativeZero};
+static constexpr fltSemantics semFloat8E4M3 = {7, -6, 4, 8};
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tschuett wrote:

Just checking that you want default semantics?

https://github.com/llvm/llvm-project/pull/97179