r242776 - in /trunk/gcc: ChangeLog c-family/Cha...

[jgreenhalgh@gcc.gnu.org]

Author: jgreenhalgh
Date: Wed Nov 23 17:23:12 2016
New Revision: 242776

URL: https://gcc.gnu.org/viewcvs?rev=242776&root=gcc&view=rev
Log:
[Patch 6/17] Migrate excess precision logic to use TARGET_EXCESS_PRECISION

gcc/

	* toplev.c (init_excess_precision): Delete most logic.
	* tree.c (excess_precision_type): Rewrite to use
	TARGET_EXCESS_PRECISION.
	* doc/invoke.texi (-fexcess-precision): Document behaviour in a
	more generic fashion.
	* ginclude/float.h: Wrap definition of FLT_EVAL_METHOD in
	__STDC_WANT_IEC_60559_TYPES_EXT__.

gcc/c-family/

	* c-common.c (excess_precision_mode_join): New.
	(c_ts18661_flt_eval_method): New.
	(c_c11_flt_eval_method): Likewise.
	(c_flt_eval_method): Likewise.
	* c-common.h (excess_precision_mode_join): New.
	(c_flt_eval_method): Likewise.
	* c-cppbuiltin.c (c_cpp_flt_eval_method_iec_559): New.
	(cpp_iec_559_value): Call it.
	(c_cpp_builtins): Modify logic for __LIBGCC_*_EXCESS_PRECISION__,
	call c_flt_eval_method to set __FLT_EVAL_METHOD__ and
	__FLT_EVAL_METHOD_TS_18661_3__.

gcc/testsuite/

	* gcc.dg/fpermitted-flt-eval-methods_3.c: New.
	* gcc.dg/fpermitted-flt-eval-methods_4.c: Likewise.


Added:
    trunk/gcc/testsuite/gcc.dg/fpermitted-flt-eval-methods_3.c
    trunk/gcc/testsuite/gcc.dg/fpermitted-flt-eval-methods_4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/c-family/c-common.h
    trunk/gcc/c-family/c-cppbuiltin.c
    trunk/gcc/doc/invoke.texi
    trunk/gcc/ginclude/float.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/toplev.c
    trunk/gcc/tree.c