[gcc(refs/users/marxin/heads/loop-unswitching-switch-v5)] Add new test-case.

[Martin Liska <marxin@gcc.gnu.org>]

https://gcc.gnu.org/g:e90e6fe2afcadfeda248a40b71e1941c87f0a9d0

commit e90e6fe2afcadfeda248a40b71e1941c87f0a9d0
Author: Martin Liska <mliska@suse.cz>
Date:   Mon Nov 8 16:36:05 2021 +0100

    Add new test-case.

Diff:
---
 gcc/testsuite/gcc.dg/loop-unswitch-10.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/gcc/testsuite/gcc.dg/loop-unswitch-10.c b/gcc/testsuite/gcc.dg/loop-unswitch-10.c
new file mode 100644
index 00000000000..747de272935
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/loop-unswitch-10.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -funswitch-loops -fdump-tree-unswitch-details" } */
+
+int
+foo(double *a, double *b, double *c, double *d, double *r, int size, float order)
+{
+  for (int i = 0; i < size; i++)
+  {
+    double tmp;
+
+    if (order == 1.f)
+      tmp = -8 * a[i];
+    else
+      tmp = -4 * b[i];
+
+    double x = 3 * tmp + d[i] + tmp;
+
+    if (order == 1.f)
+      x += 2;
+
+    double y = 3.4f * tmp + d[i];
+    r[i] = x + y;
+  }
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times ";; Unswitching loop with condition: order.* == 1.0e" 1 "unswitch" } } */