On Fri, Jan 16, 2009 at 1:28 PM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Fri, Jan 16, 2009 at 12:47 PM, Andrew Pinski <pins...@gmail.com> wrote: >> On Fri, Jan 16, 2009 at 11:35 AM, Jack Lloyd <ll...@randombit.net> wrote: >>> According to the info docs, the Alpha has __builtin_alpha_rpcc which >>> doesn't take any inputs either, and should just call rpcc much as an >>> rdtsc intrinsic would, so it may provide a more direct model. >> >> (define_insn "builtin_rpcc" >> [(set (match_operand:DI 0 "register_operand" "=r") >> (unspec_volatile:DI [(const_int 0)] UNSPECV_RPCC))] >> "" >> "rpcc %0" >> [(set_attr "type" "ilog")]) >> >> So yes this is exactly what I was mentioning to do ... >> > > The problem is 64bit. I have > > (define_insn "*rdtsc_rex64" > [(parallel [(set (match_operand:DI 0 "register_operand" "=a") > (unspec_volatile:DI [(const_int 0)] UNSPECV_RDTSC_EAX)) > (set (match_operand:DI 1 "register_operand" "=d") > (unspec_volatile:DI [(const_int 0)] UNSPECV_RDTSC_EDX))])] > "TARGET_64BIT" > "rdtsc" > [(set_attr "type" "other") > (set_attr "length" "2")]) > > But I got > > y.c: In function 'foo2': > y.c:7: error: unrecognizable insn: > (insn 5 4 6 3 y.c:6 (parallel [ > (set (reg:DI 62) > (unspec_volatile [ > (const_int 0 [0x0]) > ] 19)) > (set (reg:DI 61) > (unspec_volatile [ > (const_int 0 [0x0]) > ] 20)) > ]) -1 (nil)) > y.c:7: internal compiler error: in extract_insn, at recog.c:2027 > Please submit a full bug report, > > It looks like I can't use 2 unspec_volatile SETs in one RTL. >
Never mind. It was a typo. -- H.J.
