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

[Henrich Lauko via cfe-commits]

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@@ -7845,7 +7861,8 @@ class CIR_BinaryFPToFPBuiltinOp<string mnemonic, string llvmOpName>
   let results = (outs  CIR_AnyFloatOrVecOfFloatType:$result);
 
   let assemblyFormat = [{
-    $lhs `,` $rhs `:` qualified(type($lhs)) attr-dict
+    $lhs `,` $rhs `:` qualified(type($lhs))
+    (`fenv` `` custom<FenvFields>($fenv)^)? attr-dict
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xlauko wrote:

Same here.

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