[Bug middle-end/82062] [8 regression] simple conditional expressions no longer folded

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82062

--- Comment #14 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Wed Oct 25 21:53:21 2017
New Revision: 254089

URL: https://gcc.gnu.org/viewcvs?rev=254089&root=gcc&view=rev
Log:
        PR middle-end/82062
        * fold-const.c (operand_equal_for_comparison_p): Also return true
        if ARG0 is a simple variant of ARG1 with narrower precision.
        (fold_ternary_loc): Always pass unstripped operands to the predicate.

Added:
    trunk/gcc/testsuite/gcc.dg/fold-cond-2.c
      - copied unchanged from r254037,
trunk/gcc/testsuite/gcc.dg/fold-cond_expr-1.c
    trunk/gcc/testsuite/gcc.dg/fold-cond-3.c
Removed:
    trunk/gcc/testsuite/gcc.dg/fold-cond_expr-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog