[sdcc-devel] [ sdcc-Bugs-659744 ] needless implicit cast to int

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Bugs item #659744, was opened at 2002-12-29 18:36
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100599&aid=659744&group_id=599

Category: None
>Group: unreproducable
Status: Open
Resolution: None
>Priority: 2
Submitted By: Nobody/Anonymous (nobody)
>Assigned to: Johan Knol (johanknol)
Summary: needless implicit cast to int

Initial Comment:
SDCC 2.3.2 generates implicit a cast to int, 
in a call to a function(unsigned char) 
if a bitvar is in the inputformula.

g....@gm...

------------
void tf(unsigned char c)
{
    c=c;
}
bit test;
main()
{
    tf(2*test);
}
--------------

-
                            129 ;        function main
                            130 ;      
----------------------------------------
-
   0039                     131 _main:
                            132 ;       tmp.c:8:
tf(2*test);
                            133 ;       genCast
   0039 E4                  134         clr     a
   003A A2 00               135         mov     c,_test
   003C 33                  136         rlc     a
   003D FA                  137         mov     r2,a
   003E 7B 00               138         mov    
r3,#0x00
                            139 ;       genLeftShift
                            140 ;      
genLeftShiftLiteral
                            141 ;       genlshTwo
   0040 EB                  142         mov     a,r3
   0041 CA                  143         xch     a,r2
   0042 25 E0               144         add     a,acc
   0044 CA                  145         xch     a,r2
   0045 33                  146         rlc     a
   0046 FB                  147         mov     r3,a
                            148 ;       genCast
   0047 8A 82               149         mov     dpl,r2
                            150 ;       genCall
   0049 12 00 38            151         lcall   _tf
   004C                     152 00101$:
   004C 22                  153         ret
                            154         .area CSEG   
(CODE)    

----------------------------------------------------------------------

>Comment By: Johan Knol (johanknol)
Date: 2003-01-15 14:53

Message:
Logged In: YES 
user_id=63512

This can not be reproduced in the latest version:

_main:
;       bug-659744.c:10: tf(2*test);
;       genLeftShift
;       genLeftShiftLiteral
;       genlshOne
        clr     a
        mov     c,_test
        rlc     a
        add     a,acc
        mov     dpl,a
;       genCall
        lcall   _tf
00101$:
        ret


----------------------------------------------------------------------

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