arc.c (gen_compare_reg): Swap operands also when we do not expand to rtl.

2015-11-11  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (gen_compare_reg): Swap operands also when we
	do not expand to rtl.

From-SVN: r230217

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d292656..dd5df90 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-12  Claudiu Zissulescu  <claziss@synopsys.com>
+
+       * config/arc/arc.c (gen_compare_reg): Swap operands also when we
+       do not expand to rtl.
+
 2015-11-12  Richard Biener  <rguenther@suse.de>
 
        PR tree-optimization/58497

diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 85d53e4..8bb0969 100644 (file)
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -1690,6 +1690,7 @@ gen_compare_reg (rtx comparison, machine_mode omode)
     {
       rtx op0 = gen_rtx_REG (cmode, 0);
       rtx op1 = gen_rtx_REG (cmode, GET_MODE_SIZE (cmode) / UNITS_PER_WORD);
+      bool swap = false;
 
       switch (code)
        {
@@ -1698,15 +1699,19 @@ gen_compare_reg (rtx comparison, machine_mode omode)
          break;
        case LT: case UNGE: case LE: case UNGT:
          code = swap_condition (code);
-         tmp = x;
-         x = y;
-         y = tmp;
+         swap = true;
          break;
        default:
          gcc_unreachable ();
        }
       if (currently_expanding_to_rtl)
        {
+         if (swap)
+           {
+             tmp = x;
+             x = y;
+             y = tmp;
+           }
          emit_move_insn (op0, x);
          emit_move_insn (op1, y);
        }
@@ -1714,6 +1719,11 @@ gen_compare_reg (rtx comparison, machine_mode omode)
        {
          gcc_assert (rtx_equal_p (op0, x));
          gcc_assert (rtx_equal_p (op1, y));
+         if (swap)
+           {
+             op0 = y;
+             op1 = x;
+           }
        }
       emit_insn (gen_cmp_float (cc_reg, gen_rtx_COMPARE (mode, op0, op1)));
     }