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Kernel: Enable building the kernel with -flto

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GCC with -flto is more aggressive when it comes to inlining and
discarding functions which is why we must mark some of the functions
as NEVER_INLINE (because they contain asm labels which would be
duplicated in the object files if the compiler decides to inline
the function elsewhere) and __attribute__((used)) for others so
that GCC doesn't discard them.
This commit is contained in:
Gunnar Beutner
2021-04-29 14:54:15 +02:00
committed by Andreas Kling
parent b861259098
commit 55ae52fdf8
9 changed files with 57 additions and 57 deletions
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4
Kernel/Process.cpp
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@@ -256,7 +256,7 @@ Process::~Process()
}
// Make sure the compiler doesn't "optimize away" this function:
extern void signal_trampoline_dummy();
extern void signal_trampoline_dummy() __attribute__((used));
void signal_trampoline_dummy()
{
#if ARCH(I386)
@@ -287,7 +287,7 @@ void signal_trampoline_dummy()
#endif
}
extern "C" void asm_signal_trampoline(void);
extern "C" void asm_signal_trampoline(void) __attribute__((used));
extern "C" void asm_signal_trampoline_end(void);
void create_signal_trampoline()