search for: x86fixupbwinsts

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2016 Sep 28
4
Reg units for unaddressable register parts?
On X86, the registers AX, EAX and RAX all share the exact same register units. In terms of units, there is no difference between these registers. This makes register units insufficient to track liveness, since live AX does not imply live EAX. Would it make sense to have register units (and lane masks) for the parts of registers that are not individually addressable? -Krzysztof -- Qualcomm