[Bug middle-end/52419] Wrong expansion of misaligned vector store

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52419

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-29 
17:46:08 UTC ---
Author: jakub
Date: Wed Feb 29 17:45:55 2012
New Revision: 184666

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184666
Log:
    PR middle-end/52419
    * expr.c (expand_assignment): If doing misaligned store that doesn't
    cover all mode bits, perform a RMW cycle.

    * gcc.dg/torture/pr52419.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr52419.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expr.c
    trunk/gcc/testsuite/ChangeLog