* gcc.dg/20020206-1.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@49557 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 48 insertions, 0 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5c8a027d3cb..759f06c62b9 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2002-02-06  Janis Johnson  <janis187@us.ibm.com>
+
+	* gcc.dg/20020206-1.c: New test.
+
 2002-02-06  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.c-torture/execute/20020206-1.c: New test.
diff --git a/gcc/testsuite/gcc.dg/20020206-1.c b/gcc/testsuite/gcc.dg/20020206-1.c
new file mode 100644
index 00000000000..c5367610610
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20020206-1.c
@@ -0,0 +1,44 @@
+/* This code is from the beginning of combine_reloads in reload.c in
+   GCC 3.1-20020117, with simplifications.  It compiled incorrectly
+   for -O2 -fprefetch-loop-arrays for ix86 targets.  */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -fprefetch-loop-arrays -w" } */
+/* { dg-options "-O2 -fprefetch-loop-arrays -mcpu=pentium3 -w" { target i?86-*-* } } */
+
+struct reload
+{
+  int first_member;
+  int out;
+  int final_member;
+};
+
+int n_reloads;
+struct reload rld[10];
+
+static int
+combine_reloads ()
+{
+  int i;
+  int output_reload = -1;
+  int secondary_out = -1;
+
+  for (i = 0; i < n_reloads; i++)
+    if (rld[i].out != 0)
+      {
+	if (output_reload >= 0)
+	  return output_reload;
+	output_reload = i;
+      }
+  return output_reload;
+}
+
+int
+main ()
+{
+  n_reloads = 4;
+  rld[2].out = 2;
+  if (combine_reloads () != 2)
+    abort ();
+  exit (0);
+}