[PATCH][OBVIOUS] Use signed char in a test (PR testsuite/87739).

[Martin Liška]

Hi.

It's obvious fix that was mentioned in the patch review but 
I forgot to include it.

Survives regression tests on ppc64le-linux-gnu.

Martin

gcc/testsuite/ChangeLog:

2018-10-25  Martin Liska  <mli...@suse.cz>

        PR testsuite/87739
        * gcc.dg/tree-ssa/pr84436-5.c (foo): Use signed char.
---
 gcc/testsuite/gcc.dg/tree-ssa/pr84436-5.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)



diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr84436-5.c b/gcc/testsuite/gcc.dg/tree-ssa/pr84436-5.c
index 3f9e2245e84..e8c1337de3e 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/pr84436-5.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr84436-5.c
@@ -2,9 +2,9 @@
 /* { dg-options "-O2 -fdump-tree-switchconv -fdump-tree-optimized" } */
 /* { dg-do run } */
 
-char
+signed char
 __attribute__ ((noipa))
-foo (char how)
+foo (signed char how)
 {
   switch (how) {
     case -4: how = 96; break;