Messages in this thread | | | Date | Tue, 07 May 2019 07:05:18 +0200 | From | Oleksandr Natalenko <> | Subject | Re: [oss-drivers] netronome/nfp/bpf/jit.c cannot be build with -O3 |
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Hi.
On 07.05.2019 00:01, Jiong Wang wrote: > I guess it's because constant prop. Could you try the following change > to > __emit_shift? > > drivers/net/ethernet/netronome/nfp/bpf/jit.c > __emit_shift:331 > - if (sc == SHF_SC_L_SHF) > + if (sc == SHF_SC_L_SHF && shift) > shift = 32 - shift; > > emit_shf_indir is passing "0" as shift to __emit_shift which will > eventually be turned into 32 and it was OK because we truncate to > 5-bit, > but before truncation, it will overflow the shift mask.
Yup, it silences the error for me.
-- Oleksandr Natalenko (post-factum)
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