https://gcc.gnu.org/g:f6b10fe45b9b704fd6a7124ab02c6e6cbd8efce4
commit r15-3098-gf6b10fe45b9b704fd6a7124ab02c6e6cbd8efce4
Author: Andrew Pinski <quic_apin...@quicinc.com>
Date: Thu Aug 22 21:15:21 2024 -0700
testsuite: Fix vect-mod-var.c for division by 0 [PR116461]
The testcase cc.dg/vect/vect-mod-var.c has an division by 0
which is undefined. On some targets (aarch64), the scalar and
the vectorized version, the result of division by 0 is the same.
While on other targets (x86), we get a SIGFAULT. On other targets (powerpc),
the results are different.
The fix is to make sure the testcase does not test division by 0 (or really
mod by 0).
Pushed as obvious after testing on x86_64-linux-gnu to make sure the
testcase passes
now.
PR testsuite/116461
gcc/testsuite/ChangeLog:
* gcc.dg/vect/vect-mod-var.c: Change the initialization loop so that
`b[i]` is never 0. Use 1 in those places.
Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
Diff:
---
gcc/testsuite/gcc.dg/vect/vect-mod-var.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/testsuite/gcc.dg/vect/vect-mod-var.c
b/gcc/testsuite/gcc.dg/vect/vect-mod-var.c
index eeed318c62b0..c552941faef5 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-mod-var.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-mod-var.c
@@ -23,6 +23,9 @@ main (void)
{
a[i] = BASE1 + i * 5;
b[i] = BASE2 - i * 4;
+ /* b[i] cannot be 0 as that would cause undefined
+ behavior with respect to `% b[i]`. */
+ b[i] = b[i] ? b[i] : 1;
__asm__ volatile ("");
}
