[Bug target/86731] [8/9 Regression] Miscompiles vec_sl at -O3 with -fwrapv on ppc64el

[willschm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86731

--- Comment #3 from Will Schmidt <willschm at gcc dot gnu.org> ---
Author: willschm
Date: Thu Sep  6 19:47:06 2018
New Revision: 264150

URL: https://gcc.gnu.org/viewcvs?rev=264150&root=gcc&view=rev
Log:
[gcc]

2018-09-06  Will Schmidt  <will_schm...@vnet.ibm.com>

        PR target/86731
        * config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Update logic
        around folding of vec_sl to handle out of range shift values.

[testsuite]

2018-08-15  Will Schmidt  <will_schm...@vnet.ibm.com>

        PR target/86731
        * gcc.target/powerpc/pr86731.c: New test.
        * gcc.target/powerpc/pr86731-longlong.c: New test.
        * gcc.target/powerpc/pr86731-fwrapv.c: New test.
        * gcc.target/powerpc/pr86731-fwrapv-longlong.c: New test.
        * gcc.target/powerpc/pr86731-nogimplefold.c: New test.
        * gcc.target/powerpc/pr86731-nogimplefold-longlong.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/powerpc/pr86731-fwrapv-longlong.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr86731-fwrapv.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr86731-longlong.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr86731-nogimplefold-longlong.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr86731-nogimplefold.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr86731.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.c
    trunk/gcc/testsuite/ChangeLog