aboutsummaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-14.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-14.c')
-rw-r--r--gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-14.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-14.c b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-14.c
new file mode 100644
index 00000000000..e541160ebb6
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-14.c
@@ -0,0 +1,36 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fscalar-evolutions -fdump-tree-scev-details" } */
+
+int foo (void);
+
+int main (void)
+{
+ int a = -100;
+ int b = 2;
+ int c = 3;
+ int d = 4;
+
+ while (d)
+ {
+ if (foo ())
+ a += b;
+ else
+ a += c;
+
+ b += 1;
+ c += 5;
+
+ /* Exercises the initial condition of A after the if-phi-node. */
+ d = d + a;
+ }
+}
+
+/* The analyzer has to detect the following evolution function:
+ b -> {2, +, 1}_1
+ c -> {3, +, 5}_1
+ a -> {-100, +, {[2, 3], +, [1, 5]}_1}_1
+ d -> {4, +, {[-98, -97], +, {[2, 3], +, [1, 5]}_1}_1}_1
+*/
+
+/* FIXME. */
+