[llvm] [LLVM] Add FP instruction intrinsics (PR #193588)

[Yingwei Zheng via llvm-commits]

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@@ -2703,6 +2704,79 @@ bool IRTranslator::translateKnownIntrinsic(const CallInst &CI, Intrinsic::ID ID,
         .addExternalSymbol(SymbolName.data());
     return true;
   }
+
+  // FP instruction intrinsics: call-form equivalents of FP instructions.
+  // These have no operand bundles in PR A and always lower to plain G_* nodes.
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dtcxzyw wrote:

What does `PR A` refer to?

https://github.com/llvm/llvm-project/pull/193588