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-rw-r--r--gcc/testsuite/gcc.dg/tree-ssa/phi-opt-3.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-3.c b/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-3.c
new file mode 100644
index 000000000..54970ad80
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-3.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-optimized" } */
+
+int f(int a, int b)
+{
+ if (a == 0)
+ return 0;
+ if (a != b)
+ return a;
+ return a;
+}
+
+/* There should be no ifs as the PHI arguments, we did not
+ optimize this before because PHI-OPT did not look at
+ PHIs which have more than two arguments. */
+/* { dg-final { scan-tree-dump-times "if" 0 "optimized"} } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */