[GCC 4.8] Initial check-in of GCC 4.8.0

Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771

1 files changed, 32 insertions, 0 deletions

diff --git a/gcc-4.8/gcc/testsuite/gcc.dg/hoist-register-pressure-1.c b/gcc-4.8/gcc/testsuite/gcc.dg/hoist-register-pressure-1.c
new file mode 100644
index 000000000..f5b5302b3
--- /dev/null
+++ b/gcc-4.8/gcc/testsuite/gcc.dg/hoist-register-pressure-1.c
@@ -0,0 +1,32 @@
+/* { dg-options "-Os -fdump-rtl-hoist" }  */
+/* { dg-final { scan-rtl-dump "PRE/HOIST: end of bb .* copying expression" "hoist" { target { nonpic } } } } */
+/* { dg-final { cleanup-rtl-dump "hoist" } } */
+
+#define BUF 100
+int a[BUF];
+
+void com (int);
+void bar (int);
+
+int foo (int x, int y, int z)
+{
+  /* "x+y" won't be hoisted if "-fira-hoist-pressure" is disabled,
+     because its rtx_cost is too small.  */
+  if (z)
+    {
+      a[1] = a[0] + a[2];
+      a[2] = a[1] + a[3];
+      a[3] = a[2] + a[4];
+      a[4] = a[3] + a[5];
+      a[5] = a[4] + a[6];
+      a[6] = a[5] + a[7];
+      a[7] = a[6] + a[8];
+      com (x+y);
+    }
+  else
+    {
+      bar (x+y);
+    }
+
+  return 0;
+}