[Bug tree-optimization/84740] [8 Regression] ICE in build_constructors, at tree-switch-conversion.c:965

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84740

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar  8 07:29:42 2018
New Revision: 258354

URL: https://gcc.gnu.org/viewcvs?rev=258354&root=gcc&view=rev
Log:
        PR tree-optimization/84740
        * tree-switch-conversion.c (process_switch): Call build_constructors
        only if info.phi_count is non-zero.

        * gcc.dg/torture/pr84740.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr84740.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-switch-conversion.c