Oleg Iarygin <o...@arhadthedev.net> added the comment:
Marc-Andre:
> Inlining is something that is completely under the control of the
used compilers. Compilers are free to not inline function marked for
inlining [...]
I checked the following C snippet on gcc.godbolt.org using GCC 4.1.2 and Clang
3.0.0 with <no flags>/-O0/-O1/-Os, and both compilers inline a function marked
as static inline:
static inline int foo(int a)
{
return a * 2;
}
int bar(int a)
{
return foo(a) < 0;
}
So even with -O0, GCC from 2007 and Clang from 2011 perform inlining. Though,
old versions of CLang leave a dangling original copy of foo for some reason. I
hope a linker removes it later.
As for other compilers, I believe that if somebody specifies -O0, that person
has a sound reason to do so (like per-line debugging, building precise flame
graphs, or other specific scenario where execution performance does not
matter), so inlining interferes here anyway.
----------
nosy: +arhadthedev
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<https://bugs.python.org/issue45476>
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