[clang] [llvm] [mlir] [clang][NVPTX][MLIR][NVVM] Add overloaded fadd intrinsics (PR #217336)

[Srinivasa Ravi via cfe-commits]

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@@ -4482,6 +4466,12 @@ static Constant *ConstantFoldFixedVectorCall(
 
     return ConstantVector::get(Result);
   }
+  case Intrinsic::nvvm_fadd:
+  case Intrinsic::nvvm_fadd_ftz:
+    // The rounding mode operand is a scalar, so the lane-wise folding below
+    // does not apply.
+    // TODO: Fold these by passing the rounding mode through to every lane.
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Wolfram70 wrote:

Yes, none of the vector types have had support for constant folding. I plan to add it for the supported vector types (`v2f16`, `v2bf16`, and `v2f32`) in a follow-up patch.

https://github.com/llvm/llvm-project/pull/217336