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From fa049b3584a1cc36c250205e3d5841e6a40ff677 Mon Sep 17 00:00:00 2001
From: amker <amker@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 27 Mar 2013 08:16:54 +0000
Subject: [PATCH] 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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@197155 138bc75d-0d04-0410-961f-82ee72b054a4
Upstream-Status: Backport
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57329
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
gcc/config/arm/arm.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 460d333..edf850d 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -7094,7 +7094,7 @@ 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)
{
@@ -7102,6 +7102,8 @@ thumb1_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
case ASHIFTRT:
case LSHIFTRT:
case ROTATERT:
+ return (mode == SImode) ? COSTS_N_INSNS (1) : COSTS_N_INSNS (2);
+
case PLUS:
case MINUS:
case COMPARE:
@@ -7125,7 +7127,10 @@ thumb1_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
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))));
@@ -7822,6 +7827,7 @@ 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)
{
@@ -7829,6 +7835,8 @@ thumb1_size_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
case ASHIFTRT:
case LSHIFTRT:
case ROTATERT:
+ return (mode == SImode) ? COSTS_N_INSNS (1) : COSTS_N_INSNS (2);
+
case PLUS:
case MINUS:
case COMPARE:
@@ -7847,7 +7855,10 @@ thumb1_size_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
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))));
--
1.8.2.1
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