Fix wrong code generation if EN/ENO are used in FBD/LD/SFC

This problem appears for example here

--------
------- | MOVE |
| MOVE1 |------|EN ENO|
------- | |
| |
------- | | -----------
| 23 |------|IN OUT|---| LocalVar0 |
------- -------- -----------


--------
------- | MOVE |
| MOVE2 |------|EN ENO|
------- | |
| |
------- | | -----------
| 15 |------|IN OUT|---| LocalVar0 |
------- -------- -----------

Before wrong code was generated for this case:

MOVE6_OUT := MOVE(EN := move1, IN := 23, ENO => MOVE6_ENO);
LocalVar0 := MOVE6_OUT;
MOVE4_OUT := MOVE(EN := move2, IN := 15, ENO => MOVE4_ENO);
LocalVar0 := MOVE4_OUT;

With this patch now following code is generated:

MOVE6_OUT := MOVE(EN := move1, IN := 23, ENO => MOVE6_ENO);
IF MOVE6_ENO THEN
LocalVar0 := MOVE6_OUT;
END_IF;
MOVE4_OUT := MOVE(EN := move2, IN := 15, ENO => MOVE4_ENO);
IF MOVE4_ENO THEN
LocalVar0 := MOVE4_OUT;
END_IF;


See discussion here:
https://sourceforge.net/p/beremiz/mailman/message/36378805/

     1

/* Beremiz' header file for use by extensions */

     2

     3

#include "iec_types.h"

     4

     5

#define LOG_LEVELS 4

     6

#define LOG_CRITICAL 0

     7

#define LOG_WARNING 1

     8

#define LOG_INFO 2

     9

#define LOG_DEBUG 3

    10

    11

extern unsigned long long common_ticktime__;

    12

    13

#ifdef TARGET_LOGGING_DISABLE

    14

#define LogMessage(level, buf, size)

    15

#else

    16

int     LogMessage(uint8_t level, char* buf, uint32_t size);

    17

#endif

    18

    19

long AtomicCompareExchange(long* atomicvar,long compared, long exchange);

    20