[llvm] [mlir] [MLIR][NVVM] Add NVVMRequiresSM op traits (PR #126886)

[Guray Ozen via llvm-commits]

================
@@ -27,12 +27,17 @@ def RequiresSMInterface: OpInterface<"RequiresSMInterface"> {
   ];
 }
 
-class NVVMRequiresSM<int minVersion, string isArchAccelerated = "false",
-                    string exactMatch = "false"> :
-  ParamNativeOpTrait<"NVVMRequiresSM",
-                    !cast<string>(minVersion) # "," # isArchAccelerated # ","
-                      # exactMatch>;
-                      
-class NVVMRequiresSMa<int version> : NVVMRequiresSM<version, "true", "true">;
+class NVVMRequiresSM<int minVersion> :
+  ParamNativeOpTrait<"NVVMRequiresSM", !cast<string>(minVersion)>;
+
+class StrJoin<string sep, list<string> str_list> {
+  string ret = !foldl("", str_list, a, b,
+               !if(!eq(a, ""), b, !if(!eq(b, ""), a, !strconcat(a, sep, b))));
+}
+
+class NVVMRequiresSMa<list<int> smVersions> :
+  ParamNativeOpTrait<"NVVMRequiresSMa",
+                      StrJoin<",", !foreach(vers, smVersions,
+                                            !cast<string>(vers))>.ret>;
----------------
grypp wrote:

```suggestion
// OP requires an exact SM match along with 
// architecture acceleration.
class NVVMRequiresSMa<list<int> smVersions> :
  ParamNativeOpTrait<"NVVMRequiresSMa",
                      StrJoin<",", !foreach(vers, smVersions,
                                            !cast<string>(vers))>.ret>;
```

https://github.com/llvm/llvm-project/pull/126886