2010/1/13 Bingfeng Mei <b...@broadcom.com>: > Your instruction is likely too specific to be picked up by GCC. > You may use an intrinisc for it. > > Bingfeng
but insv is a standard pattern name. the semantics of expression x= (x&0xFF00FFFF) | ((i<<16)&0x00FF0000); is exactly what insv can do. I all tried mips gcc cross compiler, and ins is also not generated. Intrinsic is a way to resolve this though. Maybe there is no other better way. BTW, There is a special case(the bit position is 0): 235: f0 97 fc mvi a9 -0x4; #move immediate to reg 238: ff e9 94 and a9 a14 a9; 23b: f0 95 02 or a9 0x2; The above three instructions can be replaced by mvi and insv. But the fact is not in the combine pass. Qifei Fan
