[LLVMbugs] [Bug 4753] ice: Can't find corresponding super-register!

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4753


Jakob Stoklund Olesen <stoklund at 2pi.dk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |stoklund at 2pi.dk
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #2 from Jakob Stoklund Olesen <stoklund at 2pi.dk>  2009-08-23 08:03:58 ---
Fixed here: http://llvm.org/viewvc/llvm-project?rev=79855&view=rev

ReuseInfo::GetRegForReload() was using the wrong sub-register index when
undoing a reuse. A MachineOperand with a physreg has no sub-register index - it
is only used for virtual registers. This meant that %AL was illegally replaced
with %ECX when it should have been replaced with %CL.


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