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Mark unchanging arrays as const (PR#2494)

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The compiler may be able to optimize if it knows an array won’t be
changing.
This commit is contained in:
Scott Lahteine 2015-07-22 15:14:40 -07:00 committed by Richard Wackerbarth
parent 72b9e3a6ac
commit c66955aaf9
3 changed files with 4 additions and 5 deletions
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1
Marlin/Marlin.h
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@ -241,7 +241,6 @@ inline void refresh_cmd_timeout() { previous_cmd_ms = millis(); }
#define CRITICAL_SECTION_END SREG = _sreg;
#endif
extern float homing_feedrate[];
extern bool axis_relative_modes[];
extern int feedrate_multiplier;
extern bool volumetric_enabled;

6
Marlin/Marlin_main.cpp
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@ -246,7 +246,7 @@ static int cmd_queue_index_w = 0;
static int commands_in_queue = 0;
static char command_queue[BUFSIZE][MAX_CMD_SIZE];
float homing_feedrate[] = HOMING_FEEDRATE;
const float homing_feedrate[] = HOMING_FEEDRATE;
bool axis_relative_modes[] = AXIS_RELATIVE_MODES;
int feedrate_multiplier = 100; //100->1 200->2
int saved_feedrate_multiplier;
@ -310,8 +310,8 @@ bool target_direction;
#endif
#ifdef SERVO_ENDSTOPS
int servo_endstops[] = SERVO_ENDSTOPS;
int servo_endstop_angles[] = SERVO_ENDSTOP_ANGLES;
const int servo_endstops[] = SERVO_ENDSTOPS;
const int servo_endstop_angles[] = SERVO_ENDSTOP_ANGLES;
#endif
#ifdef BARICUDA

2
Marlin/ultralcd.cpp
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@ -44,7 +44,7 @@ static void lcd_status_screen();
#if HAS_POWER_SWITCH
extern bool powersupply;
#endif
static float manual_feedrate[] = MANUAL_FEEDRATE;
const float manual_feedrate[] = MANUAL_FEEDRATE;
static void lcd_main_menu();
static void lcd_tune_menu();
static void lcd_prepare_menu();