The gist of it is that you're specifying the earliest CPU that your
program will run on (if it runs on an older CPU, it might crash with
SIGILL). -Cp dictates the instruction set version used overall, while
-Cf specifies the family of floating-point instructions that will be
used. Later versi
For example, a valid FPC command line would be:
fpc -O3 -CfAVX2 -CpCOREAVX2 -OpCOREAVX2 file.pas
To what extent is each of those flags enabling the generation of AVX2
instructions? Are they all necessary, or does their functionality overlap
to some degree? Which is most important?
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