[Mlir-commits] [mlir] [mlir][arith] Clarify the meaning of fastmath flags (PR #217087)

[Jakub Kuderski]

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@@ -139,6 +139,12 @@ def FastMathFlags : I32BitEnumAttr<
   let cppNamespace = "::mlir::arith";
   let genSpecializedAttr = 0;
   let printBitEnumPrimaryGroups = 1;
+  let description = [{
+    For the `reassoc`, `nnan`, `ninf`, `nsz`, `arcp`, `contract`, `afn`, `fast`
+    flags, the arith dialect follows the same semantics as LLVM IR. Refer to the
+    [LLVM Language Reference](https://llvm.org/docs/LangRef.html#fast-math-flags)
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kuhar wrote:

We should define these on our own instead of referencing llvm; arith should be self-contained.

https://github.com/llvm/llvm-project/pull/217087