Messages in this thread | | | Date | Thu, 29 Oct 2020 15:31:13 -0500 | From | Segher Boessenkool <> | Subject | Re: [PATCH v2 1/2] bpf: don't rely on GCC __attribute__((optimize)) to disable GCSE |
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On Wed, Oct 28, 2020 at 10:57:45PM -0400, Arvind Sankar wrote: > On Wed, Oct 28, 2020 at 04:20:01PM -0700, Alexei Starovoitov wrote: > > All compilers have bugs. Kernel has bugs. What can go wrong?
Heh.
> +linux-toolchains. GCC updated the documentation in 7.x to discourage > people from using the optimize attribute. > > https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=893100c3fa9b3049ce84dcc0c1a839ddc7a21387
https://patchwork.ozlabs.org/project/gcc/patch/20151213081911.GA320@x4/ has all the discussion around that GCC patch.
Segher
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