Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 124 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38385.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38385.c
new file mode 100644
index 000000000..a49c93e26
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38385.c
@@ -0,0 +1,124 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-loop-distribution" } */
+
+struct rtx_def
+{
+  int a;
+};
+
+typedef struct rtx_def *rtx;
+
+struct rd {
+  int alternative_enabled_p[100];
+  rtx operand[100];
+  int n_operands;
+};
+
+rtx this_insn;
+int n_reloads;
+int n_replacements;
+int n_earlyclobbers;
+int replace_reloads;
+int hard_regs_live_known;
+short* static_reload_reg_p;
+struct rd recog_data;
+
+int
+find_reloads (rtx insn, int replace, int ind_levels, int live_known,
+	      short *reload_reg_p)
+{
+  int i, j;
+  int noperands = replace;
+
+  int no_input_reloads = 0;
+  int n_alternatives = replace;
+  char this_alternative_match_win[30];
+  char this_alternative_win[30];
+  char this_alternative_earlyclobber[30];
+  int this_alternative_matches[30];
+  int goal_alternative[30];
+  int this_alternative_number;
+
+  char goal_alternative_match_win[30];
+  char goal_alternative_win[30];
+  int best;
+
+  int operand_mode[30];
+  int retval = 0;
+
+  for (this_alternative_number = 0;
+       this_alternative_number < n_alternatives;
+       this_alternative_number++)
+    {
+
+      int losers = 0;
+      int bad = 0;
+      
+      if (!recog_data.alternative_enabled_p[this_alternative_number])
+	{
+	  int i;
+	  
+	  for (i = 0; i < recog_data.n_operands; i++)
+	    ;
+	  
+	  continue;
+	}
+      
+      for (i = 0; i < noperands; i++)
+	if (this_alternative_earlyclobber[i]
+	    && (this_alternative_win[i] || this_alternative_match_win[i]))
+	  {
+	    if (j != noperands)
+	      {
+		losers++;
+		
+		for (j = 0; j < noperands; j++)
+		  if (this_alternative_matches[j] == i
+		      && this_alternative_match_win[j])
+		    {
+		      this_alternative_win[j] = 0;
+		      this_alternative_match_win[j] = 0;
+		      losers++;
+		    }
+	      }
+	  }
+      
+      if (losers == 0)
+	{
+	  for (i = 0; i < noperands; i++)
+	    {
+	      goal_alternative_win[i] = 0;
+	      goal_alternative_match_win[i] = 0;
+	    }
+	  
+	  goto finish;
+	}
+
+      if (! bad && best > losers)
+	{
+	  for (i = 0; i < noperands; i++)
+	    {
+	      goal_alternative[i] = 0;
+	      goal_alternative_win[i] = 0;
+	    }
+	}
+    }
+  
+
+ finish:
+
+  for (i = 0; i < noperands; i++)
+    if (! goal_alternative_win[i])
+      {
+	rtx op = recog_data.operand[i];
+	int mode = operand_mode[i];
+	
+	if (((ix86_preferred_reload_class ((op), (goal_alternative[i])) == 2)
+	     || no_input_reloads)
+	    && mode != 0)
+	  {}
+      }
+
+  return retval;
+}
+