On 03/19/2011 08:46 AM, H.J. Lu wrote: > Operations on stack and frame pointers, like push/pop, require stack > and frame pointers in DImode. Even if I use word_mode in gen_push > and gen_pop, I got
No they don't. Not really. Assuming the stack and frame pointer are properly zero extended, and no one tries to place a stack frame across null, then you can also represent it by an SImode operation. > x.i:10:1: error: unrecognizable insn: > (insn/f 22 5 23 2 (set (mem:SI (pre_dec:DI (reg/f:SI 7 sp)) [0 S4 A8]) > (reg/f:SI 6 bp)) x.i:6 -1 > (nil)) Well, gee, that merely means a pattern needs to be adjusted. r~
