[Bug tree-optimization/82965] [8 regression] gcc.dg/vect/pr79347.c starts failing after r254379

[paul.hua.gm at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82965

Paul Hua <paul.hua.gm at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paul.hua.gm at gmail dot com

--- Comment #12 from Paul Hua <paul.hua.gm at gmail dot com> ---

On mips64el target there are same fail for now (r258364).

FAIL: gcc.dg/vect/pr79347.c  -mmsa  scan-tree-dump-not vect "Invalid sum of "
FAIL: gcc.dg/vect/pr79347.c -flto -ffat-lto-objects -mmsa  scan-tree-dump-not
vect "Invalid sum of "

After bisected, it's started with r249872.

cross-compile config with:

../configure MISSING=texinfo MAKEINFO=missing --with-mpc=/opt/cfarm/mpc-latest/
--target=mips64el-linux-gnu --enable-languages=c,c++

build cmd:
build/gcc/cc1 -mel -quiet -dumpbase pr79347.c -mmsa -march=mips64r2 -mabi=64
-mllsc -mips64r2 -mno-shared -auxbase-strip pr79347.s -O2 -version
-fdiagnostics-color=never -fno-diagnostics-show-caret -ftree-vectorize
-fvect-cost-model=unlimited -fno-common -fdump-tree-vect-details
-fdump-tree-vect-all -o pr79347.s -fpreprocessed pr79347.i

cat pr79347.i:

...

short *a;
int c;
void n(void)
{
  for (int i = 0; i<c;i++)
    a[i]++;
}