[Bug tree-optimization/78720] [7 Regression] Illegal instruction in generated code

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78720

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Dec 10 12:06:12 2016
New Revision: 243516

URL: https://gcc.gnu.org/viewcvs?rev=243516&root=gcc&view=rev
Log:
        PR tree-optimization/78720
        * match.pd (A < 0 ? C : 0): Only optimize for signed A.  If shift
        is negative, sign extend to @1's type and than AND with C.

        * gcc.c-torture/execute/pr78720.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr78720.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog