[Bug c/92324] [10 Regression] ICE in expand_direct_optab_fn, at internal-fn.c:2890

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92324

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov  8 09:01:41 2019
New Revision: 277955

URL: https://gcc.gnu.org/viewcvs?rev=277955&root=gcc&view=rev
Log:
2019-11-08  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/92324
        * tree-vect-loop.c (vect_create_epilog_for_reduction): Use
        STMT_VINFO_REDUC_VECTYPE for all computations, inserting
        sign-conversions as necessary.
        (vectorizable_reduction): Reject conversions in the chain
        that are not sign-conversions, base analysis on a non-converting
        stmt and its operation sign.  Set STMT_VINFO_REDUC_VECTYPE.
        * tree-vect-stmts.c (vect_stmt_relevant_p): Don't dump anything
        for debug stmts.
        * tree-vectorizer.h (_stmt_vec_info::reduc_vectype): New.
        (STMT_VINFO_REDUC_VECTYPE): Likewise.

        * gcc.dg/vect/pr92205.c: XFAIL.
        * gcc.dg/vect/pr92324-1.c: New testcase.
        * gcc.dg/vect/pr92324-2.c: Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/pr92205.c
    trunk/gcc/tree-vect-loop.c
    trunk/gcc/tree-vect-stmts.c
    trunk/gcc/tree-vectorizer.h