[gcc r13-2009] [Committed] PR other/106575: Use "signed char" in new fold-eqandshift-4.c

[gcc r13-2009] [Committed] PR other/106575: Use "signed char" in new fold-eqandshift-4.c

[Roger Sayle]

https://gcc.gnu.org/g:c16d9f78dc81664e3341157c5a6efb85c0c141f4

commit r13-2009-gc16d9f78dc81664e3341157c5a6efb85c0c141f4
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Wed Aug 10 07:05:33 2022 +0100

    [Committed] PR other/106575: Use "signed char" in new fold-eqandshift-4.c
    
    My recently added testcase gcc.dg/fold-eqandshift-4.c, incorrectly assumed
    that "char" was "signed char", and hence fails on powerpc64 where this
    isn't the case.  Fixed by making "signed char" explicit where needed in
    this test.  Committed as obvious.
    
    2022-08-10  Roger Sayle  <roger@nextmovesoftware.com>
    
    gcc/testsuite/ChangeLog
            PR other/106575
            * gcc.dg/fold-eqandshift-4.c: Use "signed char" explicitly.

Diff:
---
 gcc/testsuite/gcc.dg/fold-eqandshift-4.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/gcc/testsuite/gcc.dg/fold-eqandshift-4.c b/gcc/testsuite/gcc.dg/fold-eqandshift-4.c
index 42d5190703e..fbba438556e 100644
--- a/gcc/testsuite/gcc.dg/fold-eqandshift-4.c
+++ b/gcc/testsuite/gcc.dg/fold-eqandshift-4.c
@@ -1,14 +1,14 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-optimized" } */
 
-int sr30eq00(char x) { return ((x >> 4) & 0x30) == 0; }
-int sr30ne00(char x) { return ((x >> 4) & 0x30) != 0; }
-int sr30eq20(char z) { return ((z >> 4) & 0x30) == 0x20; }
-int sr30ne20(char z) { return ((z >> 4) & 0x30) != 0x20; }
-int sr30eq30(char x) { return ((x >> 4) & 0x30) == 0x30; }
-int sr30ne30(char x) { return ((x >> 4) & 0x30) != 0x30; }
-int sr33eq33(char x) { return ((x >> 4) & 0x33) == 0x33; }
-int sr33ne33(char x) { return ((x >> 4) & 0x33) != 0x33; }
+int sr30eq00(signed char x) { return ((x >> 4) & 0x30) == 0; }
+int sr30ne00(signed char x) { return ((x >> 4) & 0x30) != 0; }
+int sr30eq20(signed char z) { return ((z >> 4) & 0x30) == 0x20; }
+int sr30ne20(signed char z) { return ((z >> 4) & 0x30) != 0x20; }
+int sr30eq30(signed char x) { return ((x >> 4) & 0x30) == 0x30; }
+int sr30ne30(signed char x) { return ((x >> 4) & 0x30) != 0x30; }
+int sr33eq33(signed char x) { return ((x >> 4) & 0x33) == 0x33; }
+int sr33ne33(signed char x) { return ((x >> 4) & 0x33) != 0x33; }
 
 int ur30eq00(unsigned char z) { return ((z >> 4) & 0x30) == 0; }
 int ur30ne00(unsigned char z) { return ((z >> 4) & 0x30) != 0; }