[clang] [compiler-rt] [ubsan] Display correct runtime messages for negative _BitInt (PR #93612)

[via cfe-commits]

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@@ -103,6 +103,14 @@ class TypeDescriptor {
     /// representation is that of bitcasting the floating-point value to an
     /// integer type.
     TK_Float = 0x0001,
+    /// An _BitInt(N) type. Lowest bit is 1 for a signed value, 0 for an
+    /// unsigned
+    /// value. Remaining bits are log_2(bit_width). The value representation is
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earnol wrote:

Accepted.

https://github.com/llvm/llvm-project/pull/93612