Re: [PATCH RESEND] Kbuild: Add an option to enable GCC VTA

[Michal Marek]

Dne 21.11.2014 v 19:40 Josh Stone napsal(a):
> Due to recent codegen issues, gcc -fvar-tracking-assignments was
> unconditionally disabled in commit 2062afb4f804a ("Fix gcc-4.9.0
> miscompilation of load_balance() in scheduler").  However, this reduces
[...]
> With gcc-4.9.2-1.fc22, I can now build v3.18-rc5 with Fedora's i686 and
> x86_64 configs, and this is completely clean with GCC_COMPARE_DEBUG.

According to gcc's bug#61801, this is really fixed in 4.9.2 (commit
556537c4 in the git mirror). So how about checking for this minimal
version instead of a new Kconfig option?

thanks,
Michal
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