----------------------------------------
> From: yavuzyetim@xxxxxxxxxxx
> To: eljay@xxxxxxxxx
> Subject: RE: Inlining function pointers
> Date: Wed, 26 Aug 2009 14:34:09 +0000
>
>
> Sorry, my mistake, so I tried the below: It does inline the regular call but why can't it inline the function pointer? It knows which function this pointer is pointing to beforehand. So shouldn't it inline it?
>
> #include
>
> static inline void print_stuff() __attribute__((always_inline));
> static inline void print_stuff()
> {
> printf("yavuz");
> }
> static inline void call_func(void (*my_func)()) __attribute__((always_inline));
> static inline void call_func(void (*my_func)()) {
> my_func();
> }
>
> int main() {
> call_func(print_stuff);
> }
>
> and the result is:
> trash$gcc -S den.c
> trash$more den.s
> .file "den.c"
> .text
> .globl main
> .type main, @function
> main:
> leal 4(%esp), %ecx
> andl $-16, %esp
> pushl -4(%ecx)
> pushl %ebp
> movl %esp, %ebp
> pushl %ecx
> subl $20, %esp
> movl $print_stuff, -8(%ebp)
> movl -8(%ebp), %eax
> call *%eax
> addl $20, %esp
> popl %ecx
> popl %ebp
> leal -4(%ecx), %esp
> ret
> .size main, .-main
> .section .rodata
> .LC0:
> .string "yavuz"
> .text
> .type print_stuff, @function
> print_stuff:
> pushl %ebp
> movl %esp, %ebp
> subl $8, %esp
> movl $.LC0, (%esp)
> call printf
> leave
> ret
> .size print_stuff, .-print_stuff
> .ident "GCC: (Ubuntu 4.3.3-5ubuntu4) 4.3.3"
> .section .note.GNU-stack,"",@progbits
>
>
>
> ----------------------------------------
>> From: eljay@xxxxxxxxx
>> To: yavuzyetim@xxxxxxxxxxx
>> Date: Wed, 26 Aug 2009 07:30:35 -0700
>> Subject: Re: Inlining function pointers
>>
>> Hi yavuz,
>>
>>> trash$gcc -finline-functions -S den.c
>>
>> That won't result in the functions to be inlined.
>>
>> You have to enable optimization as well: -O1 -finline-functions
>>
>> Sincerely,
>> --Eljay
>>
>
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