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wrong opcode?


I curious as to why the code generated for these two move.w commands is
completely different. In the first assembly I used two variables (one equal to 0
and the other equal to 8). I tried doing a move using the variables added
together as my offset to register A1 and managed to get 33B9 0000 0000 0170 0000
0008. When I simply put an 8 in instead of the variables, I got the correct
code. 3379 0000 0000 0008. Any ideas??????

I'm using gnu as on a pc-cygwin system with a m68k target. 


3901 034a 0000 0008         .DC.L   C_WCP1_MSG_PARM
 3902 034e 0000 0000        .DC.L   HWPN_PARM_OFS
 3903 0352 33B9 0000 MOVE.W SYS_SYS_VERS_W,C_WCP_MSG_PARM+HWPN_PARM_OFS(%A1)
 3903      0000 0170 
 3903      0000 0008 
  
  
 
 3901 034a 0000 0008        .DC.L   C_WCP1_MSG_PARM
 3902 034e 0000 0000        .DC.L   HWPN_PARM_OFS
 3904                       
 3905 0352 3379 0000        MOVE.W  M_SYS_SYS_VERS_W,8(%A1)
 3905      0000 0008 
 3906      




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