Fix the LLC regressions on X86 last night.  In particular, when undoing previous copy elisions and we discover we need to reload a register, make sure to use the regclass of the original register for the reload, not the class of the current register.  This avoid using 16-bit loads to reload 32-bit values.
Fix the LLC regressions on X86 last night.  In particular, when undoing
previous copy elisions and we discover we need to reload a register, make
sure to use the regclass of the original register for the reload, not the
class of the current register.  This avoid using 16-bit loads to reload 32-bit
values.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@23645 91177308-0d34-0410-b5e6-96231b3b80d8

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