My target has a bit test (btst) instruction, so the C code: if (x & 256) can be efficiently coded as (for example): btst $r0,256 jmp nz,.L1 However, with my current patterns, it generates an explicit "and" and "compare" using a scratch: and $r1,$r0,256 cmp $r1,0 jmp nz,.L1 Looking through targets with a similar instruction - arc, rx, s390, i386 - I see several different approaches. They all seem quite complicated. What is the best way of implementing this? Thanks. -- James Bowman http://www.excamera.com/
