2002-07-30 Toon Moene <toon@moene.indiv.nluug.nl>

2002-07-30  Toon Moene  <toon@moene.indiv.nluug.nl>

	* flags.h: Declare flag_finite_math_only.
	Use it in definition of HONOR_NANS and
	HONOR_INFINITIES.
	* c-common.c (cb_register_builtins): Emit
	__FINITE_MATH_ONLY__ when flag_finite_math_only
	is set.
	* combine.c (simplify_if_then_else): If
	flag_finite_math_only is set, a == b has a
	definite value.
	* toplev.c: Initialize flag_finite_math_only.
	(set_flags_fast_math): Set it on -ffast-math.
	(flag_fast_math_set_p): Test it.
doc:
	* invoke.texi: Document -ffinite-math-only.
f:
	* com.c (ffe_init_options): Set
	flag_finite_math_only.
	* invoke.texi: Document -fno-finite-math-only.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55887 138bc75d-0d04-0410-961f-82ee72b054a4