arm.c (arm_new_rtx_costs): Use destination mode when handling a SET rtx.

2014-01-10  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/arm.c (arm_new_rtx_costs): Use destination mode
	when handling a SET rtx.

From-SVN: r206521

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 24cb3b8..b6f8089 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2014-01-10  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
+       * config/arm/arm.c (arm_new_rtx_costs): Use destination mode
+       when handling a SET rtx.
+
+2014-01-10  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
        * config/arm/arm-cores.def (cortex-a53): Specify FL_CRC32.
        (cortex-a57): Likewise.
        (cortex-a57.cortex-a53): Likewise. Remove redundant flags.

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 842d67f..18196b3 100644 (file)
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -9092,6 +9092,9 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
     {
     case SET:
       *cost = 0;
+      /* SET RTXs don't have a mode so we get it from the destination.  */
+      mode = GET_MODE (SET_DEST (x));
+
       if (REG_P (SET_SRC (x))
          && REG_P (SET_DEST (x)))
        {
@@ -9106,6 +9109,8 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
             in 16 bits in Thumb mode.  */
          if (!speed_p && TARGET_THUMB && outer_code == COND_EXEC)
            *cost >>= 1;
+
+         return true;
        }
 
       if (CONST_INT_P (SET_SRC (x)))
@@ -9113,7 +9118,6 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
          /* Handle CONST_INT here, since the value doesn't have a mode
             and we would otherwise be unable to work out the true cost.  */
          *cost = rtx_cost (SET_DEST (x), SET, 0, speed_p);
-         mode = GET_MODE (SET_DEST (x));
          outer_code = SET;
          /* Slightly lower the cost of setting a core reg to a constant.
             This helps break up chains and allows for better scheduling.  */