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Re: [PATCH GCC]Catch more MEM_REFs sharing common addressing part in gimple strength reduction


On 09/18/13 02:26, bin.cheng wrote:


-----Original Message-----
From: Dominique Dhumieres [mailto:dominiq@lps.ens.fr]
Sent: Wednesday, September 18, 2013 1:47 AM
To: gcc-patches@gcc.gnu.org
Cc: hjl.tools@gmail.com; Bin Cheng
Subject: Re: [PATCH GCC]Catch more MEM_REFs sharing common
addressing part in gimple strength reduction

The new test gcc.dg/tree-ssa/slsr-39.c fails in 64 bit mode (see
http://gcc.gnu.org/ml/gcc-regression/2013-09/msg00455.html ).
Looking for MEM in the dump returns

   _12 = MEM[(int[50] *)_17];
   MEM[(int[50] *)_20] = _13;


Thanks for reporting, I think this can be fixed by patch:
http://gcc.gnu.org/ml/gcc-patches/2013-09/msg00761.html

Just a quick update on the patch. The proposed patch didn't pass the x86_64 bootstrap, and I'm working on a better fix.

Thanks,
Yufeng


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