[PATCH][ARM] Disable store_minmaxsi pattern for arm_restrict_i

Kyrill Tkachov kyrylo.tkachov@arm.com
Tue Sep 2 15:34:00 GMT 2014


Hi all,

The store_minmaxsi produces a cmp + ite + 2 conditional stores and is 
thus inappropriate when the ARMv8-A IT block rules are in place. 
Previously we had disabled it for speed optimisations, but it should be 
disabled completely when -mrestrict-it is in effect.

Ok for trunk and 4.9?

Tested arm-none-eabi.

2014-09-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

     * config/arm/arm.md (*store_minmaxsi): Disable for arm_restrict_it.
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