fix SH long long compare

From-SVN: r134380

gcc/ChangeLog

+2008-04-17  Christian Bruel  <christian.bruel@st.com>
+
+	* config/sh/sh.c (expand_cbranchdi4): Use original operands for
+	msw_skip comparison.
+	
 2008-04-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/35739

gcc/config/sh/sh.c

@@ -1685,6 +1685,14 @@ expand_cbranchdi4 (rtx *operands, enum rtx_code comparison)
     {
       rtx taken_label = operands[3];
 
+      /* Operands were possibly modified, but msw_skip doesn't expect this.
+	 Always use the original ones.  */
+      if (msw_taken != CODE_FOR_nothing)
+	{
+	  operands[1] = op1h;
+	  operands[2] = op2h;
+	}
+
       operands[3] = skip_label = gen_label_rtx ();
       expand_cbranchsi4 (operands, msw_skip, msw_skip_prob);
       operands[3] = taken_label;

gcc/testsuite/ChangeLog

+2008-04-17  Christian Bruel  <christian.bruel@st.com>
+
+	* gcc.dg/dicomp.c: New testcase. 
+	
 2008-04-16  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR fortran/35724

gcc/testsuite/gcc.dg/long-long-compare-1.c

+/* Problem only noticed on SH for -mcbranchdi DImode comparison with constants.
+ * Target dependant failure but test valid for alls.  */
+/* { dg-do run } */
+/* { dg-options "-O0" } */
+/* { dg-options "-O0 -mcbranchdi" { target sh4-*-* } } */
+
+extern void abort(void);
+extern void exit(int);
+
+int test2(long long n)
+{
+  if (n < 2)
+    return 1;
+  return 0;
+}
+
+int test1(long long n)
+{
+  if (n < 1)
+    return 1;
+  return 0;
+}
+
+int test0(long long n)
+{
+  if (n < 0)
+    return 1;
+  return 0;
+}
+
+int test1n(long long n)
+{
+  if (n < -1LL)
+    return 1;
+  return 0;
+}
+
+int test2n(long long n)
+{
+  if (n < -2LL)
+    return 1;
+  return 0;
+}
+
+int main()
+{
+  if (test2n (-1LL))
+    abort ();
+
+  if (test2n (-2LL))
+    abort ();
+
+  if (test2n (0LL))
+    abort ();
+
+  if (test2n (1LL))
+    abort ();
+
+  if (test2n (2LL))
+    abort ();
+ 
+  if (test1n (-1LL))
+    abort ();
+
+  if (!test1n (-2LL))
+    abort ();
+
+  if (test1n (0LL))
+    abort ();
+
+  if (test1n (1LL))
+    abort ();
+
+  if (test1n (2LL))
+    abort ();
+
+  if (!test0 (-1LL))
+    abort ();
+
+  if (!test0 (-2LL))
+    abort ();
+
+  if (test0 (0LL))
+    abort ();
+
+  if (test0 (1LL))
+    abort ();
+
+  if (test0 (2LL))
+    abort ();
+
+  if (!test2 (-1LL))
+    abort ();
+
+  if (!test2 (-2LL))
+    abort ();
+
+  if (!test2 (0LL))
+    abort ();
+
+  if (!test2 (1LL))
+    abort ();
+
+  if (test2 (2LL))
+    abort ();
+
+  if (!test1 (-1LL))
+    abort ();
+
+  if (!test1 (-2LL))
+    abort ();
+
+  if (!test1 (0LL))
+    abort ();
+
+  if (test1 (1LL))
+    abort ();
+
+  if (test1 (2LL))
+    abort ();
+
+  exit (0);
+}
+
+
+