This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [PATCH] Fix parts of PR52975


On Mon, Apr 16, 2012 at 2:22 AM, Richard Guenther <rguenther@suse.de> wrote:
>
> When looking at the code we produce from if-conversion and vectorization
> I noticed several things. ?For one, we are not handling TARGET_MEM_REF
> in operand_equal_p which means that DOM does not clean up loads/stores
> of that form (to the extent DOM can do that anyway). ?Also we never
> simplify the conditions in VEC_COND_EXPRs because the combining in
> forwprop does not handle them. ?And we do not combine the inverted
> COND_EXPRs if-conversion can create - but it's easy to do that in
> forwprop.
>
> The following addresses this two issues.
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk.
>
> Richard.
>
> 2012-04-16 ?Richard Guenther ?<rguenther@suse.de>
>
> ? ? ? ?PR tree-optimization/52975
> ? ? ? ?* tree-ssa-forwprop.c (combine_cond_exprs): New function.
> ? ? ? ?(ssa_forward_propagate_and_combine): Call it for COND_EXPRs
> ? ? ? ?and VEC_COND_EXPRs. ?Also combine into VEC_COND_EXPRs condition.
> ? ? ? ?* fold-const.c (operand_equal_p): Handle TARGET_MEM_REF.
>

This caused:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53032


-- 
H.J.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]