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invoke.texi (-funsafe-math-optimizations): Document its possible effects at link time.

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* doc/invoke.texi (-funsafe-math-optimizations): Document its
        possible effects at link time.

From-SVN: r43519
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Richard Henderson 2001-06-22 15:59:44 -07:00 committed by Richard Henderson
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2 changed files with 8 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-06-22 Richard Henderson <rth@redhat.com>
* doc/invoke.texi (-funsafe-math-optimizations): Document its
possible effects at link time.
2001-06-22 Diego Novillo <dnovillo@redhat.com>
* basic-block.h (dump_edge_info): Declare.

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gcc/doc/invoke.texi
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@ -3373,7 +3373,9 @@ sets @option{-fno-math-errno}.
@opindex funsafe-math-optimizations
Allow optimizations for floating-point arithmetic that (a) assume
that arguments and results are valid and (b) may violate IEEE or
ANSI standards.
ANSI standards. When used at link-time, it may include libraries
or startup files that change the default FPU control word or other
similar optimizations.
This option should never be turned on by any @option{-O} option since
it can result in incorrect output for programs which depend on