[Bug optimization/14737] New: Purge political statement from -ffast-math docs

["bangerth at dealii dot org" <gcc-bugzilla at gcc dot gnu dot org>]

I object to the missionary use of the term "should never be 
turned on by any -O option" in the description of -ffast-math. 
Here is a patch that removes this, and also documents what 
this flag is there for: 
------------------------ 
Index: invoke.texi 
=================================================================== 
RCS file: /cvsroot/gcc/gcc/gcc/doc/invoke.texi,v 
retrieving revision 1.390.2.22 
diff -c -r1.390.2.22 invoke.texi 
*** invoke.texi 15 Mar 2004 21:15:33 -0000      1.390.2.22 
--- invoke.texi 25 Mar 2004 23:31:33 -0000 
*************** 
*** 4395,4404 **** 
   
  This option causes the preprocessor macro @code{__FAST_MATH__} to be 
defined. 
   
! This option should never be turned on by any @option{-O} option since 
  it can result in incorrect output for programs which depend on 
  an exact implementation of IEEE or ISO rules/specifications for 
! math functions. 
   
  @item -fno-math-errno 
  @opindex fno-math-errno 
--- 4395,4405 ---- 
   
  This option causes the preprocessor macro @code{__FAST_MATH__} to be 
defined. 
   
! This option is not turned on by any @option{-O} option since 
  it can result in incorrect output for programs which depend on 
  an exact implementation of IEEE or ISO rules/specifications for 
! math functions. It may, however, yield faster code for programs that do  
! not require the guarantees of these specifications. 
   
  @item -fno-math-errno 
  @opindex fno-math-errno 
 
 
ChangeLog entry: 
 
2004-03-25  Wolfgang Bangerth  <bangerth@dealii.org> 
 
	* doc/invoke.texi (optimization options): Reword description 
	  of -ffast-math. Document its primary purpose.

-- 
           Summary: Purge political statement from -ffast-math docs
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Keywords: patch
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bangerth at dealii dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14737