[cfe-dev] __atomic_ builtins for 64-bit types in 32-bit mode

凌欢 linghuan713 at 126.com
Thu Jan 31 02:58:38 PST 2013


Who can send me the checker-270.tar.bz2?
thanks very much.

 BRs

Howard Ling (凌欢)
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At 2013-01-31 18:49:56,"Kostya Serebryany" <kcc at google.com> wrote:

Folks, 


Any other suggestion w.r.t __atomic_ builtins for 64-bit types in 32-bit mode? 


--kcc 



On Wed, Jan 23, 2013 at 2:14 PM, Kostya Serebryany <kcc at google.com> wrote:






On Wed, Jan 23, 2013 at 2:09 PM, Joerg Sonnenberger <joerg at britannica.bec.de> wrote:

On Wed, Jan 23, 2013 at 01:04:40PM +0400, Kostya Serebryany wrote:
> Looks like __atomic_ builtins for 64-bit types in 32-bit mode
> are not supported in the clang trunk, see e.g.
> http://llvm.org/bugs/show_bug.cgi?id=15034


x86 I assume? That requires cmpxchg8, which needs at least Pentiumish
feature set. Does using -march help?



I tried -march=native -- no difference. 


--kcc 
 

Joerg
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