Bug when compiling OS kernel code

[llvmbot]

Bugzilla Link	3339
Resolution	DUPLICATE
Resolved on	Mar 06, 2010 13:59
Version	2.4
OS	Linux
Attachments	Testcase that causes a compile error
Reporter	LLVM Bugzilla Contributor

Extended Description

The attached is a testcase which causes a back-end error in LLVM 2.4.
These types of assembly routines are mainly used in OS kernels.
I checked that GCC 4.3 works for this routine.

The error messsage is ...
Couldn't allocate output reg for constraint 'A'!

[llvmbot]

As mentioned on the email list, this has been reported multiple times and fixed.

*** This bug has been marked as a duplicate of bug #2151 ***