[PATCH] Fix FP reassociation #2

Richard Guenther rguenther@suse.de
Wed Feb 20 14:35:00 GMT 2008


On Wed, 20 Feb 2008, Richard Guenther wrote:

> 
> While we honor flag_associative_math in the fold_binary re-association
> code, split_tree which is used by it unconditionally bails out for
> FP types.
> 
> Bootstrap and regtest in progress, I'll apply this if it succeeds.
> 
> Richard.
> 
> 2008-02-20  Richard Guenther  <rguenther@suse.de>
> 
> 	* fold-const.c (split_tree): Associate floatig-point expressions
> 	if flag_associative_math is set.
> 
> 	* gcc.dg/fold-reassoc-1.c: New testcase.

Actually that needs adjustment of gcc.dg/tree-ssa/recip-3.c to
not compute d/d.

Committed with that change.

Richard.



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