[issue4753] Faster opcode dispatch on gcc

[Kevin Watters]

Kevin Watters <kevinwatters at gmail.com> added the comment:

Does anyone know the equivalent ICC command line option for GCC's -fno-
gcse? (Or if it has one?) I can't find a related option in the docs.

It looks like ICC hits the same combining goto problem, as was 
mentioned: without changing any options, I applied pitrou_dispatch_2.7.patch to release-26maint and pybench reported 
literally no difference, +0.0%.

Even if stock Python is built with MSVC, devs like myself who ship 
Python would like to see the benefit.

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