Fixed bug with hoisting/deopting in taken-block instead of preheader.
With a fail-before pass-after regression test.

Rationale:
Hoisting and deopting should be done in the taken-block for safety
of the evaluation *unless* the code was in the original loop header,
and thus always taken.

https://code.google.com/p/android/issues/detail?id=198697

bug: 26506884

Change-Id: I1cf121292559fd2570ad67587ec3bc8e8a85a92a
diff --git a/test/562-bce-preheader/info.txt b/test/562-bce-preheader/info.txt
new file mode 100644
index 0000000..ae006ac
--- /dev/null
+++ b/test/562-bce-preheader/info.txt
@@ -0,0 +1 @@
+Regression test for correct placement of hoisting/deopting code.