https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83047

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Nov 21 08:41:47 2017
New Revision: 254992

URL: https://gcc.gnu.org/viewcvs?rev=254992&root=gcc&view=rev
Log:
        PR tree-optimization/83047
        * gimple-ssa-store-merging.c
        (imm_store_chain_info::output_merged_store): If the loads with the
        same vuse are in different basic blocks, for load_gsi pick a load
        location that is dominated by the other loads.

        * gcc.dg/pr83047.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr83047.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-store-merging.c
    trunk/gcc/testsuite/ChangeLog

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