[patch] Fixed-point patch 6/10

["Fu, Chao-Ying" <fu at mips dot com>]

Hi,

  Here is the patch #6.  Please review it.  Thanks!

> 1. Merge in machine modes to support signed and unsigned
> fract and accum modes.  Handle scalar and vector modes.
DONE!
> 2. Merge in fixed-value.h and fixed-value.c to handle fixed-point values.
(fixed-value.diff)
> 3. Merge in TREE structures for fixed-point types and constants.
(tree.diff)
> 4. Merge in C front-end changes to parse _Sat, _Fract and _Accum.
(c-parser.diff)
> 5. Merge in RTL structures for fixed-point constants and operators.
(rtl.diff)
> 6. Merge in libcpp to parse fixed-point constants.
(cpp.diff)
> 7. Merge in changes to support "case" of FIXED_POINT_TYPE, FIXED_CST,
> and CONST_FIXED in .c and .h files.
> 8. Merge in the MIPS backend that supports fixed-point instructions.
> 9. Merge in configure/build system changes for the runtime library.
> 10. Merge in testsuite (from gcc.dg/fixed-point) that only run
> when the compiler is configured to enable fixed-point.

Regards,
Chao-ying

libcpp/ChangeLog
2007-08-01  Chao-ying Fu  <fu@mips.com>

	* expr.c (interpret_float_suffix): Support hr, r, lr, llr, uhr, ur,
	ulr, ullr, hk, k, lk, llk, uhk, uk, ulk, ullk.
	(cpp_classify_number): Support decimal fixed-point constants without
	exponents.
	Warn about fixed-point constants when -pedantic.
	* include/cpplib.h (CPP_N_SMALL, CPP_N_MEDIUM, CPP_N_LARGE): Change
	comments to support fixed-point values.
	(CPP_N_FRACT, CPP_N_ACCUM): Define.

gcc/ChangeLog
2007-08-01  Chao-ying Fu  <fu@mips.com>

	* c-lex.c (interpret_fixed): Declare.
	(interpret_float): Process _Fract and _Accum.
	(interpret_fixed): New function.
	* final.c (output_addr_const): Process CONST_FIXED.
	* simplify-rtx.c (simplify_const_unary_operation): Handle US_NEG.
	(simplify_binary_operation_1): Handle US_ASHIFT, SS_MULT, US_MULT,
	SS_DIV, US_DIV.
	(simplify_const_binary_operation): Handle SS_MULT, US_MULT, SS_DIV,
	US_DIV, US_ASHIFT.
	(simplify_immed_subreg): Support CONST_FIXED.
	Process MODE_FRACT, MODE_UFRACT, MODE_ACCUM, MODE_UACCUM.
	(simplify_subreg): Support CONST_FIXED.

Attachment: cpp.diff
Description: cpp.diff