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-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-8.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-8.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-8.c
new file mode 100644
index 000000000..766f674d5
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/scev-8.c
@@ -0,0 +1,62 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-ivopts-details" } */
+
+int *a;
+
+int
+foo1 (long long s, long long l)
+{
+ long long i;
+
+ for (i = s; i < l; i++)
+ {
+ a[(short)i] = 0;
+ }
+ return 0;
+}
+
+int
+foo2 (unsigned char s, unsigned char l, unsigned char c)
+{
+ unsigned char i, step = 1;
+ int sum = 0;
+
+ for (i = s; i < l; i++)
+ {
+ sum += a[c];
+ c += step;
+ }
+
+ return sum;
+}
+
+int
+foo3 (unsigned char s, unsigned char l, unsigned char c)
+{
+ unsigned char i;
+ int sum = 0;
+
+ for (i = s; i != l; i += c)
+ {
+ sum += a[i];
+ }
+
+ return sum;
+}
+
+int
+foo4 (unsigned char s, unsigned char l)
+{
+ unsigned char i;
+ int sum = 0;
+
+ for (i = s; i != l; i++)
+ {
+ sum += a[i];
+ }
+
+ return sum;
+}
+
+/* Address of array references are not scevs. */
+/* { dg-final { scan-tree-dump-not "use \[0-9\]\n address" "ivopts" } } */