Evan Cheng 7f02cfa599 Clean up sub-register implementation by moving subReg information back to ...

MachineOperand auxInfo. Previous clunky implementation uses an external map
to track sub-register uses. That works because register allocator uses
a new virtual register for each spilled use. With interval splitting (coming
soon), we may have multiple uses of the same register some of which are
of using different sub-registers from others. It's too fragile to constantly
update the information.

llvm-svn: 44104

2007-11-14 07:59:08 +00:00

14 KiB

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