Pass the ISA-specific compilation flags to the ABI implementations

Copyright (c) 2021, Arm Limited.

cranelift/codegen/src/isa/arm32/mod.rs

@@ -48,7 +48,7 @@ impl Arm32Backend {
         // This performs lowering to VCode, register-allocates the code, computes
         // block layout and finalizes branches. The result is ready for binary emission.
         let emit_info = EmitInfo::new(flags.clone());
-        let abi = Box::new(abi::Arm32ABICallee::new(func, flags)?);
+        let abi = Box::new(abi::Arm32ABICallee::new(func, flags, self.isa_flags())?);
         compile::compile::<Arm32Backend>(func, self, abi, &self.reg_universe, emit_info)
     }
 }