re PR target/68400 (ICE in change_address_1, at emit-rtl.c:2125)

	PR target/68400
	* gcc.target/mips/mips.exp (mips_option_groups): Add stack-protector.
	* gcc.target/mips/pr68400.c: New test.

From-SVN: r232954

gcc/testsuite/ChangeLog

+2016-01-28  Steve Ellcey  <sellcey@imgtec.com>
+
+	PR target/68400
+	* gcc.target/mips/mips.exp (mips_option_groups): Add stack-protector.
+	* gcc.target/mips/pr68400.c: New test.
+
 2016-01-28  Martin Sebor  <msebor@redhat.com>
 
 	PR target/17381

gcc/testsuite/gcc.target/mips/mips.exp

@@ -257,6 +257,7 @@ set mips_option_groups {
     lsa "(|!)HAS_LSA"
     section_start "-Wl,--section-start=.*"
     frame-header "-mframe-header-opt|-mno-frame-header-opt"
+    stack-protector "-fstack-protector"
 }
 
 for { set option 0 } { $option < 32 } { incr option } {

gcc/testsuite/gcc.target/mips/pr68400.c

+/* PR target/pr68400
+   This was triggering an ICE in change_address_1 when compiled with -Os.  */
+
+/* { dg-do compile } */
+/* { dg-options "-fstack-protector -mips16" } */
+
+typedef struct s {
+ unsigned long long d;
+ long long t;
+} p;
+
+int sh(int x, unsigned char *buf)
+{
+ p *uhdr = (p *)buf;
+ unsigned int i = 0;
+ uhdr->d = ((uhdr->d & 0xff00000000000000LL) >> 56)
+            | ((uhdr->d & 0x0000ff0000000000LL) >> 24)
+            | ((uhdr->d & 0x00000000ff000000LL) << 8)
+            | ((uhdr->d & 0x00000000000000ffLL) << 56);
+ uhdr->t = ((uhdr->t & 0xff00000000000000LL) >> 56)
+                | ((uhdr->t & 0x0000ff0000000000LL) >> 24)
+                | ((uhdr->t & 0x000000ff00000000LL) >> 8)
+                | ((uhdr->t & 0x00000000ff000000LL) << 8)
+                | ((uhdr->t & 0x000000000000ff00LL) << 40)
+                | ((uhdr->t & 0x00000000000000ffLL) << 56);
+ i += 4;
+ if (x < i) return 0; else return 1;
+}