Correct. This has been fixed in the meantime, but 3.28 is too old. On Sun, Nov 1, 2015 at 9:39 PM, Matt Broadstone <mbroa...@gmail.com> wrote:
> Hi, > > I'm trying to track down an eager deoptimization in my node.js code, and > it seems to be directly related to a keyed lookup on an object using a > string. There is a comment on an issue from May ( > https://code.google.com/p/v8/issues/detail?id=3183#c12) that seems to > indicate that the assumption is that keyed lookups are by number. Is that > the case? Is it not possible for me to optimize this method if I require a > keyed lookup by string? > > versions: > node: v0.12.7 > v8: 3.28.71.19 > > This is the stack for the triggered DEOPT, please let me know if further > information would help: > > [optimizing 0x2d3900bd1609 <JS Function Codec.encode (SharedFunctionInfo > 0x2d3900b27af9)> - took 0.820, 0.509, 0.214 ms] > [deoptimizing (DEOPT eager): begin 0x2d3900bd1609 Codec.encode (opt #34) > @40, FP to SP delta: 56] > Deferred TaggedToI: NaN > translating Codec.encode => node=136, height=24 > 0x7fff5fbff0a0: [top + 80] <- 0x373656140201 ; [sp + 96] > 0x373656140201 <JS Object> > 0x7fff5fbff098: [top + 72] <- 0x331bd6004161 ; rbx 0x331bd6004161 > <true> > 0x7fff5fbff090: [top + 64] <- 0x3736561487c1 ; [sp + 80] > 0x3736561487c1 <a BufferBuilder with map 0x28dbca62ad71> > 0x7fff5fbff088: [top + 56] <- 0xeb789d0f7f1 ; rdx 0xeb789d0f7f1 > <String[7]: boolean> > 0x7fff5fbff080: [top + 48] <- 0x31a4d47f5f88 ; caller's pc > 0x7fff5fbff078: [top + 40] <- 0x7fff5fbff0e0 ; caller's fp > 0x7fff5fbff070: [top + 32] <- 0x2d3900b7d7f9; context > 0x7fff5fbff068: [top + 24] <- 0x2d3900bd1609; function > 0x7fff5fbff060: [top + 16] <- 0x331bd6004121 <undefined> ; literal > 0x7fff5fbff058: [top + 8] <- 0x331bd6004121 <undefined> ; literal > 0x7fff5fbff050: [top + 0] <- 0x331bd6004121 <undefined> ; literal > [deoptimizing (eager): end 0x2d3900bd1609 Codec.encode @40 => node=136, > pc=0x31a4d47f4edf, state=NO_REGISTERS, alignment=no padding, took 0.062 ms] > [deoptimizer unlinked: Codec.encode / 2d3900bd1609] > > Regards, > Matt > > -- > -- > v8-users mailing list > v8-users@googlegroups.com > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
