On 29 October 2014 10:03, Kyrill Tkachov <kyrylo.tkac...@arm.com> wrote: > Hi all, > > This patch fixes an issue with the final_prescan workaround for the > Cortex-A53 erratum 835769 > where calling recog_memoized could modify the recog data for the > multiply-accumulate instruction > when looking at a preceding asm block. This can lead to wrong code > generation. > > The solution is to call extract_constrain_insn_cached to restore the recog > data before exiting > aarch64_madd_needs_nop. > > Bootstrapped and tested on aarch64-none-linux-gnu. > A compile testcase is added demonstrating the issue. > > Ok for trunk?
Ok /Marcus
