[sdcc-devel] bugreport: problem with "<<"

[Anton V. <va...@is...>]

Hi all!

Here is another troublesome program (checked with CVS snapshot of march 6 &
2.1.9Ga):

char f(unsigned char c) {
 return (~(1 << c));
}

void main() {
 f(3);
}

sdcc generates the following:

_f:
 ar2 = 0x02
 ar3 = 0x03
 ar4 = 0x04
 ar5 = 0x05
 ar6 = 0x06
 ar7 = 0x07
 ar0 = 0x00
 ar1 = 0x01
; shl_bug.c 2
 mov r2,dpl
 mov dpl,#0xfe
00101$:

I.e. no shift in this case - probably this is a bug in optimization.

Best regards,   Anton Voloshin   mailto:va...@is...