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Diffstat (limited to 'gcc-4.8/gcc/testsuite/gcc.dg/vect/pr60276.c')
-rw-r--r--gcc-4.8/gcc/testsuite/gcc.dg/vect/pr60276.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/testsuite/gcc.dg/vect/pr60276.c b/gcc-4.8/gcc/testsuite/gcc.dg/vect/pr60276.c
new file mode 100644
index 000000000..d4ad21980
--- /dev/null
+++ b/gcc-4.8/gcc/testsuite/gcc.dg/vect/pr60276.c
@@ -0,0 +1,52 @@
+/* { dg-do run } */
+
+extern void abort (void);
+
+static void
+foo (int *out, const int *lp, unsigned samples)
+{
+ int x, target;
+ for (x = 0, target = 0; x < (int)samples; x += 2, target++)
+ {
+ out[x] = lp[target];
+ out[x - 1] = out[x - 2] + out[x];
+ }
+}
+
+static void
+foo_novec (int *out, const int *lp, unsigned samples)
+{
+ int x, target;
+ for (x = 0, target = 0; x < (int)samples; x += 2, target++)
+ {
+ out[x] = lp[target];
+ out[x - 1] = out[x - 2] + out[x];
+ __asm__ volatile ("" : : : "memory");
+ }
+}
+
+int main(void)
+{
+ const int lp[25] = {
+ 0, 2, 4, 6, 8,
+ 10, 12, 14, 16,
+ 18, 20, 22, 24,
+ 26, 28, 30, 32,
+ 34, 36, 38, 40,
+ 42, 44, 46, 48,
+ };
+ int out[49] = {0};
+ int out2[49] = {0};
+ int s;
+
+ foo (out + 2, lp + 1, 48);
+ foo_novec (out2 + 2, lp + 1, 48);
+
+ for (s = 0; s < 49; s++)
+ if (out[s] != out2[s])
+ abort ();
+
+ return 0;
+}
+
+/* { dg-final { cleanup-tree-dump "vect" } } */