[Bug c++/27836] Compiler generates bad assembler code for xaddl __asm__ function

[pinskia at gcc dot gnu dot org]

--- Comment #4 from pinskia at gcc dot gnu dot org  2006-05-31 14:38 ---

__asm__ __volatile__(
"lock;xaddl %0, %1"
:"=r"(i)
:"m"(*p), "0"(i));


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27836

[Bug c++/27836] Compiler generates bad assembler code for xaddl __asm__ function

[l_heldt at poczta dot onet dot pl]

--- Comment #3 from l_heldt at poczta dot onet dot pl  2006-05-31 11:43 
---
Can you tell me how correct asm body should look like?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27836

[Bug c++/27836] Compiler generates bad assembler code for xaddl __asm__ function

[schwab at suse dot de]

--- Comment #2 from schwab at suse dot de  2006-05-31 11:20 ---
You are not using %2 in the asm body.  There is no requirement that %0 and %2
expand to the same register.


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schwab at suse dot de changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27836

[Bug c++/27836] Compiler generates bad assembler code for xaddl __asm__ function

[l_heldt at poczta dot onet dot pl]

--- Comment #1 from l_heldt at poczta dot onet dot pl  2006-05-31 11:14 
---
Problem does not show up in g++-4.0.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27836