http://llvm.org/bugs/show_bug.cgi?id=3339
Summary: Bug when compiling OS kernel code
Product: libraries
Version: 2.4
Platform: PC
OS/Version: Linux
Status: NEW
Keywords: compile-fail
Severity: major
Priority: P2
Component: Backend: C
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Created an attachment (id=2392)
--> (http://llvm.org/bugs/attachment.cgi?id=2392)
Testcase that causes a compile error
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'!
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