You are specifying the /Ob1 or /Ob2 option in the compiler settings ?

Also, remember to use __forceinline so that it will be forced inline
(although just specifying __inline should be OK, since VC++ is very good at
this sort of thing).

Check out this...

inline Specifier
The inline specifier instructs the compiler to replace function calls with
the code of the function body. This substitution is "inline expansion"
(sometimes called "inlining"). Inline expansion alleviates the function-call
overhead at the potential cost of larger code size.

The inline keyword tells the compiler that inline expansion is preferred.
However, the compiler can create a separate instance of the function
(instantiate) and create standard calling linkages instead of inserting the
code inline. Two cases where this can happen are:

Recursive functions.


Functions that are referred to through a pointer elsewhere in the
translation unit.
Note that for a function to be considered as a candidate for inlining, it
must use the new-style function definition. Functions that are declared as
inline and that are not class member functions have internal linkage unless
otherwise specified.

Microsoft Specific

The __inline keyword is equivalent to inline.

The __forceinline keyword instructs the compiler to inline the function
without performing any cost/benefit analysis. The programmer must exercise
good judgement in using this keyword. Indiscriminate use of __forceinline
can result in larger, and sometimes even slower, code.

Even with __forceinline, the compiler cannot inline code in all
circumstances. The compiler cannot inline a function if:

The function or its caller is compiled with /Ob0 (the default option for
debug builds).


The function and the caller use different types of exception handling (C++
exception handling in one, structured exception handling in the other).


The function has a variable argument list.


The function uses inline assembly, unless compiled with /Og, /Ox, /O1, or
/O2.


The function returns an unwindable object by value, when compiled with /GX,
/EHs, or /EHa.


The function receives a copy-constructed object passed by value, when
compiled with /-GX, /EHs, or /EHa.


The function is recursive and not accompanied by #pragma(inline_recursion,
on). With the inline_recursion pragma, recursive functions can be inlined to
a depth of eight calls, or as determined by the inline_depth pragma (see
below).


The function is virtual.


The program takes the address of the function.
If the compiler cannot inline a function declared with __forceinline, it
generates a level 1 warning (4714).

END Microsoft Specific

As with normal functions, there is no defined order of evaluation of the
arguments to an inline function. In fact, it could be different from the
order in which the arguments are evaluated when passed using normal function
call protocol.

Microsoft Specific

Recursive functions can be substituted inline to a depth specified by
theinline_depth pragma. After that depth, recursive function calls are
treated as calls to an instance of the function. Theinline_recursion pragma
controls the inline expansion of a function currently under expansion. See
theInline-Function Expansion (/Ob) compiler option for related information.

END Microsoft Specific



















-----Original Message-----
From: Thomas Happ [mailto:sorcererxiii@...]
Sent: 03 June 2001 04:38
To: gbadev@yahoogroups.com
Subject: [gbadev] Argh, VC++ inlines.


The situation is: I'm trying to write an emulator.
It runs a sum total of 2 public domain demos. One of
them runs ok, the other one runs VERY SLOW. My ARM
CPU is a big class; to remedy the slowness of it I
want to make a lot of the member functions inline, but
without having to stick them in the header file. In
VC++, when I put __inline befoer a function
definition, I get the linker error,

"unresolved external symbol "public: unsigned long
__thiscall ARM::<insert the name of the function
here>"

I don't know if this happens for other compilers than
VC++. But I thought perhaps someone one this list
would know how to solve the problem, or if it can be
solved.


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