[Bug tree-optimization/78005] [7 Regression] 172.mgrid and 450.soplex miscompare

["amker at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78005

--- Comment #5 from amker at gcc dot gnu.org ---
Author: amker
Date: Wed Oct 19 11:02:23 2016
New Revision: 241339

URL: https://gcc.gnu.org/viewcvs?rev=241339&root=gcc&view=rev
Log:
        PR tree-optimization/78005
        * tree-vect-loop-manip.c (vect_gen_prolog_loop_niters): Compute
        upper (included) bound for niters of prolog loop.
        (vect_gen_scalar_loop_niters): Change parameter VF to VFM1.
        Compute niters of scalar loop above which vectorized loop is
        preferred, as well as the upper (included) bound for the niters.
        (vect_do_peeling): Record niter bound for loops accordingly.

        gcc/testsuite
        PR tree-optimization/78005
        * gcc.dg/vect/pr78005.c: New.
        * gcc.target/i386/l_fma_float_1.c: Revise test.
        * gcc.target/i386/l_fma_float_2.c: Ditto.
        * gcc.target/i386/l_fma_float_3.c: Ditto.
        * gcc.target/i386/l_fma_float_4.c: Ditto.
        * gcc.target/i386/l_fma_float_5.c: Ditto.
        * gcc.target/i386/l_fma_float_6.c: Ditto.
        * gcc.target/i386/l_fma_double_1.c: Ditto.
        * gcc.target/i386/l_fma_double_2.c: Ditto.
        * gcc.target/i386/l_fma_double_3.c: Ditto.
        * gcc.target/i386/l_fma_double_4.c: Ditto.
        * gcc.target/i386/l_fma_double_5.c: Ditto.
        * gcc.target/i386/l_fma_double_6.c: Ditto.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr78005.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/l_fma_double_1.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_double_2.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_double_3.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_double_4.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_double_5.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_double_6.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_float_1.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_float_2.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_float_3.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_float_4.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_float_5.c
    trunk/gcc/testsuite/gcc.target/i386/l_fma_float_6.c
    trunk/gcc/tree-vect-loop-manip.c