* config/i386/i386.c (override_options): Replace TARGET_64BIT_MS_ABI.
(X86_64_VARARGS_SIZE): Replace REGPARM_MAX and SSE_REGPARM_MAX by abi
specific defines.
- (X86_64_REGPARM_MAX): New.
- (X86_64_SSE_REGPARM_MAX): New.
- (X64_REGPARM_MAX): New.
- (X64_SSE_REGPARM_MAX): New.
- (X86_32_REGPARM_MAX): New.
- (X86_32_SSE_REGPARM_MAX): New.
(ix86_handle_cconv_attribute): Replace TARGET_64BIT_MS_ABI.
(ix86_function_regparm): Handle user calling abi.
(ix86_function_arg_regno_p): Replace TARGET_64BIT_MS_ABI
(OUTGOING_REG_PARM_STACK_SPACE): New.
(ix86_reg_parm_stack_space): New prototype.
(CUMULATIVE_ARGS): Add call_abi member.
+ (X86_64_REGPARM_MAX): New.
+ (X86_64_SSE_REGPARM_MAX): New.
+ (X64_REGPARM_MAX): New.
+ (X64_SSE_REGPARM_MAX): New.
+ (X86_32_REGPARM_MAX): New.
+ (X86_32_SSE_REGPARM_MAX): New.
+ (REGPARM_MAX): Updated.
+ (SSE_REGPARM_MAX): Updated.
(machine_function): Add call_abi member.
* config/i386/mingw32.h (EXTRA_OS_CPP_BUILTINS): Replace
TARGET_64BIT_MS_ABI by DEFAULT_ABI compare to MS_ABI.