[clang] [CIR] Add rotate operation (PR #148426)

[Sirui Mu via cfe-commits]

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@@ -219,6 +233,28 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl &gd, unsigned builtinID,
     mlir::Value arg = emitScalarExpr(e->getArg(0));
     return RValue::get(builder.create<cir::BitReverseOp>(loc, arg));
   }
+
+  case Builtin::BI__builtin_rotateleft8:
+  case Builtin::BI__builtin_rotateleft16:
+  case Builtin::BI__builtin_rotateleft32:
+  case Builtin::BI__builtin_rotateleft64:
+  case Builtin::BI_rotl8:
+  case Builtin::BI_rotl16:
+  case Builtin::BI_rotl:
+  case Builtin::BI_lrotl:
+  case Builtin::BI_rotl64:
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Lancern wrote:

I'm going to exclude these MSVC flavor builtins from this patch since the MSVC ABI is NYI and I cannot test them yet.

https://github.com/llvm/llvm-project/pull/148426