egcs/gcc ChangeLog configure configure.in emit ...

[rth@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	rth@sourceware.cygnus.com	00/01/23 20:02:40

Modified files:
	gcc            : ChangeLog configure configure.in emit-rtl.c 
	gcc/config/alpha: alpha-protos.h alpha.c alpha.h alpha.md osf.h 
Added files:
	gcc/config/alpha: osf5.h 

Log message:
	* alpha/osf.h (TARGET_HAS_XFLOATING_LIBS): Define.
	* alpha/osf5.h: New file.
	* configure.in (alpha-*-osf5): Add it to tm_file.
	
	* emit-rtl.c (operand_subword): Support TFmode on a 64-bit target.
	
	* alpha-protos.h (alpha_emit_xfloating_arith): Declare.
	(alpha_emit_xfloating_cvt, function_arg): Declare.
	* alpha.c (alpha_emit_conditional_branch): Call
	alpha_emit_xfloating_compare for TFmode compares.
	(alpha_lookup_xfloating_lib_func): New.
	(alpha_compute_xfloating_mode_arg): New.
	(alpha_emit_xfloating_libcall): New.
	(alpha_emit_xfloating_arith): New.
	(alpha_emit_xfloating_compare): New.
	(alpha_emit_xfloating_cvt): New.
	(print_operand): Add default abort case.
	(function_arg): Mind FUNCTION_ARG_PASS_BY_REFERENCE.
	* alpha.h (TARGET_HAS_XFLOATING_LIBS): New.
	(BIGGEST_ALIGNMENT): Increase to 128 bits.
	(RETURN_IN_MEMORY): True for TF/TCmode.
	(ALPHA_ARG_SIZE): TF/TCmode is passed indirect.
	(FUNCTION_ARG): Move to function_arg.
	(FUNCTION_ARG_PASS_BY_REFERENCE): New.
	(ASM_OUTPUT_LONG_DOUBLE): New.
	(ASM_OUTPUT_DOUBLE): Always output bits.
	* alpha.md (addtf3, divtf3, multf3, subtf3, cmptf): New.
	(fix_trunctfdi2, floatditf2, floatunsditf2): New.
	(extenddftf2, trunctfdf2): New.