[llvm] Add support for DFP IR type. (PR #69718)

[Andy Kaylor via llvm-commits]

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@@ -56,10 +56,13 @@ class Type {
     HalfTyID = 0,  ///< 16-bit floating point type
     BFloatTyID,    ///< 16-bit floating point type (7-bit significand)
     FloatTyID,     ///< 32-bit floating point type
+    Decimal32TyID, ///< 32-bit decimal floating point type
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andykaylor wrote:

I think that's right, but you'd want to move Decimal64TyID above DoubleTyID and Decimal128TyID above FP128TyID for consistency.

https://github.com/llvm/llvm-project/pull/69718