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-rw-r--r--gcc/testsuite/gcc.dg/tree-ssa/recip-2.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/recip-2.c b/gcc/testsuite/gcc.dg/tree-ssa/recip-2.c
new file mode 100644
index 000000000..be754145e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/recip-2.c
@@ -0,0 +1,35 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -funsafe-math-optimizations -fdump-tree-recip" } */
+
+float u, v, w, x, y, z;
+
+void e(float a, float b, float c, float d, float e, float f)
+{
+ if (a < b)
+ {
+ a = a + b;
+ c = c + d;
+ }
+
+ /* The PHI nodes for these divisions should be combined. */
+ d = d / a;
+ e = e / a;
+ f = f / a;
+
+ a = a / c;
+ b = b / c;
+
+ /* This should not be left as a multiplication. */
+ c = 1 / c;
+
+ u = a;
+ v = b;
+ w = c;
+ x = d;
+ y = e;
+ z = f;
+}
+
+/* { dg-final { scan-tree-dump-times " / " 2 "recip" } } */
+/* { dg-final { scan-tree-dump-times " \\* " 5 "recip" } } */
+/* { dg-final { cleanup-tree-dump "recip" } } */