[Bug rtl-optimization/57676] [4.9/5/6 Regression] ICE: Maximum number of LRA constraint passes is achieved (30)

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57676

--- Comment #12 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Fri Mar  4 14:12:36 2016
New Revision: 233967

URL: https://gcc.gnu.org/viewcvs?rev=233967&root=gcc&view=rev
Log:
Avoid terminating early in LRA, unless -fchecking (PR57676)

gcc/
        PR rtl-optimization/57676
        * lra-assigns.c (lra_assign): Guard test for maximum iterations
        with flag_checking.

gcc/testsuite/
        PR rtl-optimization/57676
        * gcc.dg/torture/pr57676.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr57676.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-assigns.c
    trunk/gcc/testsuite/ChangeLog