[llvm] [IR] Add `llvm.modf` intrinsic (PR #121948)

[Paul Walker via llvm-commits]

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@@ -1058,6 +1058,10 @@ enum NodeType {
   /// FSINCOS - Compute both fsin and fcos as a single operation.
   FSINCOS,
 
+  /// FMODF - Decomposes the operand into integral and fractional parts, each
+  /// having the same type and sign as the arg.
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paulwalker-arm wrote:

s/the arg/the operand/

https://github.com/llvm/llvm-project/pull/121948