[clang] [llvm] [AMDGPU] Use `bf16` instead of `i16` for bfloat (PR #80908)

[Stanislav Mekhanoshin via cfe-commits]

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@@ -2652,6 +2652,23 @@ bool isInlinableLiteral32(int32_t Literal, bool HasInv2Pi) {
          (Val == 0x3e22f983 && HasInv2Pi);
 }
 
+bool isInlinableLiteralBF16(int16_t Literal, bool HasInv2Pi) {
+  if (!HasInv2Pi)
+    return false;
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rampitec wrote:

It does not change the behavior, but generally it shall only matter when you compare value to 0x3E22.

https://github.com/llvm/llvm-project/pull/80908