alpha.c (alpha_emit_conditional_branch): Handle ORDERED and UNORDERED conditions.

	* config/alpha/alpha.c (alpha_emit_conditional_branch): Handle
	ORDERED and UNORDERED conditions.

From-SVN: r187411

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7da054fad53fa7f9058970949fb71913e53e091c..6076af923a90dbfaf64f279867a465f13eec3db1 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-05-12  Uros Bizjak  <ubizjak@gmail.com>
+
+       * config/alpha/alpha.c (alpha_emit_conditional_branch): Handle
+       ORDERED and UNORDERED conditions.
+
 2012-05-11  Richard Guenther  <rguenther@suse.de>
 
        * tree-flow.h (referenced_var_check_and_insert): Remove.

diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c
index 174abc2f5599186ef8dce030bee21e6c8f072a80..225c9ab3c54203b4c93c0fcf6bf554219586290e 100644 (file)
--- a/gcc/config/alpha/alpha.c
+++ b/gcc/config/alpha/alpha.c
@@ -2335,7 +2335,7 @@ alpha_emit_conditional_branch (rtx operands[], enum machine_mode cmp_mode)
     {
     case EQ:  case LE:  case LT:  case LEU:  case LTU:
     case UNORDERED:
-      /* We have these compares: */
+      /* We have these compares.  */
       cmp_code = code, branch_code = NE;
       break;
 
@@ -2572,13 +2572,15 @@ alpha_emit_conditional_move (rtx cmp, enum machine_mode mode)
       switch (code)
        {
        case EQ: case LE: case LT: case LEU: case LTU:
+       case UNORDERED:
          /* We have these compares.  */
          cmp_code = code, code = NE;
          break;
 
        case NE:
-         /* This must be reversed.  */
-         cmp_code = EQ, code = EQ;
+       case ORDERED:
+         /* These must be reversed.  */
+         cmp_code = reverse_condition (code), code = EQ;
          break;
 
        case GE: case GT: case GEU: case GTU:
@@ -2598,6 +2600,14 @@ alpha_emit_conditional_move (rtx cmp, enum machine_mode mode)
          gcc_unreachable ();
        }
 
+      if (cmp_mode == DImode)
+       {
+         if (!reg_or_0_operand (op0, DImode))
+           op0 = force_reg (DImode, op0);
+         if (!reg_or_8bit_operand (op1, DImode))
+           op1 = force_reg (DImode, op1);
+       }
+
       tem = gen_reg_rtx (cmp_mode);
       emit_insn (gen_rtx_SET (VOIDmode, tem,
                              gen_rtx_fmt_ee (cmp_code, cmp_mode,
@@ -2609,6 +2619,14 @@ alpha_emit_conditional_move (rtx cmp, enum machine_mode mode)
       local_fast_math = 1;
     }
 
+  if (cmp_mode == DImode)
+    {
+      if (!reg_or_0_operand (op0, DImode))
+       op0 = force_reg (DImode, op0);
+      if (!reg_or_8bit_operand (op1, DImode))
+       op1 = force_reg (DImode, op1);
+    }
+
   /* We may be able to use a conditional move directly.
      This avoids emitting spurious compares.  */
   if (signed_comparison_operator (cmp, VOIDmode)
@@ -2627,11 +2645,13 @@ alpha_emit_conditional_move (rtx cmp, enum machine_mode mode)
   switch (code)
     {
     case EQ:  case LE:  case LT:  case LEU:  case LTU:
+    case UNORDERED:
       /* We have these compares: */
       break;
 
     case NE:
-      /* This must be reversed.  */
+    case ORDERED:
+      /* These must be reversed.  */
       code = reverse_condition (code);
       cmov_code = EQ;
       break;