===================================================================
@@ -1,3 +1,10 @@
+2013-03-27 Bin Cheng <bin.cheng@arm.com>
+
+ PR target/56102
+ * config/arm/arm.c (thumb1_rtx_costs, thumb1_size_rtx_costs): Fix
+ rtx costs for SET/ASHIFT/ASHIFTRT/LSHIFTRT/ROTATERT patterns with
+ mult-word mode.
+
2013-03-27 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.h (TARGET_FLT_EVAL_METHOD): Define.
===================================================================
@@ -7116,7 +7116,7 @@ static inline int
thumb1_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
{
enum machine_mode mode = GET_MODE (x);
- int total;
+ int total, words;
switch (code)
{
@@ -7124,6 +7124,8 @@ thumb1_rtx_costs (rtx x, enum rtx_code code, enum
case ASHIFTRT:
case LSHIFTRT:
case ROTATERT:
+ return (mode == SImode) ? COSTS_N_INSNS (1) : COSTS_N_INSNS (2);
+
case PLUS:
case MINUS:
case COMPARE:
@@ -7147,7 +7149,10 @@ thumb1_rtx_costs (rtx x, enum rtx_code code, enum
return COSTS_N_INSNS (1) + 16;
case SET:
- return (COSTS_N_INSNS (1)
+ /* A SET doesn't have a mode, so let's look at the SET_DEST to get
+ the mode. */
+ words = ARM_NUM_INTS (GET_MODE_SIZE (GET_MODE (SET_DEST (x))));
+ return (COSTS_N_INSNS (words)
+ 4 * ((MEM_P (SET_SRC (x)))
+ MEM_P (SET_DEST (x))));
@@ -7844,6 +7849,7 @@ static inline int
thumb1_size_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
{
enum machine_mode mode = GET_MODE (x);
+ int words;
switch (code)
{
@@ -7851,6 +7857,8 @@ thumb1_size_rtx_costs (rtx x, enum rtx_code code,
case ASHIFTRT:
case LSHIFTRT:
case ROTATERT:
+ return (mode == SImode) ? COSTS_N_INSNS (1) : COSTS_N_INSNS (2);
+
case PLUS:
case MINUS:
case COMPARE:
@@ -7869,7 +7877,10 @@ thumb1_size_rtx_costs (rtx x, enum rtx_code code,
return COSTS_N_INSNS (1);
case SET:
- return (COSTS_N_INSNS (1)
+ /* A SET doesn't have a mode, so let's look at the SET_DEST to get
+ the mode. */
+ words = ARM_NUM_INTS (GET_MODE_SIZE (GET_MODE (SET_DEST (x))));
+ return (COSTS_N_INSNS (words)
+ 4 * ((MEM_P (SET_SRC (x)))
+ MEM_P (SET_DEST (x))));