[clang] Make CIR assembly formats strict properties compatible (PR #226600)

[Henrich Lauko via cfe-commits]

================
@@ -7779,7 +7794,8 @@ class CIR_UnaryFPToIntBuiltinOp<string mnemonic, string llvmOpName>
   }];
 
   let assemblyFormat = [{
-    $src `:` type($src) `->` type($result) attr-dict
+    $src `:` type($src) `->` type($result)
+    (`fenv` `` custom<FenvFields>($fenv)^)? attr-dict
----------------
xlauko wrote:

Same here.

https://github.com/llvm/llvm-project/pull/226600