+2009-03-27 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/39472
+ * config/i386/i386.c (ix86_abi): New.
+ (override_options): Handle -mabi=.
+ (ix86_function_arg_regno_p): Replace DEFAULT_ABI with
+ ix86_abi.
+ (ix86_call_abi_override): Likewise.
+ (init_cumulative_args): Likewise.
+ (function_arg_advance): Likewise.
+ (function_arg_64): Likewise.
+ (function_arg): Likewise.
+ (ix86_pass_by_reference): Likewise.
+ (ix86_function_value_regno_p): Likewise.
+ (ix86_build_builtin_va_list_abi): Likewise.
+ (setup_incoming_varargs_64): Likewise.
+ (is_va_list_char_pointer): Likewise.
+ (ix86_init_machine_status): Likewise.
+ (ix86_reg_parm_stack_space): Use enum calling_abi on
+ call_abi.
+ (ix86_function_type_abi): Return enum calling_abi. Rewrite
+ for 64bit. Replace DEFAULT_ABI with ix86_abi.
+ (ix86_function_abi): Make it static and return enum
+ calling_abi.
+ (ix86_cfun_abi): Return enum calling_abi. Replace DEFAULT_ABI
+ with ix86_abi.
+ (ix86_fn_abi_va_list): Updated.
+
+ * config/i386/i386.h (ix86_abi): New.
+ (STACK_BOUNDARY): Replace DEFAULT_ABI with ix86_abi.
+ (CONDITIONAL_REGISTER_USAGE): Likewise.
+ (CUMULATIVE_ARGS): Change call_abi type to enum calling_abi.
+ (machine_function): Likewise.
+
+ * config/i386/i386.md (untyped_call): Replace DEFAULT_ABI
+ with ix86_abi.
+ * config/i386/cygming.h (TARGET_64BIT_MS_ABI): Likewise.
+ (STACK_BOUNDARY): Likewise.
+ * config/i386/mingw32.h (EXTRA_OS_CPP_BUILTINS): Likewise.
+
+ * config/i386/i386.opt (mabi=): New.
+
+ * config/i386/i386-protos.h (ix86_cfun_abi): Changed to
+ return enum calling_abi.
+ (ix86_function_type_abi): Likewise.
+ (ix86_function_abi): Removed.
+
+ * doc/invoke.texi: Document -mabi= option for x86.
+
2009-03-27 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* builtins.c (real_dconstp): Delete.
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