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v4f32
2007 Jun 22
0
[LLVMdev] a possible alternative for pre-legalize extended ValueTypes
On Jun 22, 2007, at 11:06 AM, Dan Gohman wrote:
> After doing a bunch of work for moving pre-legalize extended
> ValueTypes
> into a table in SelectionDAG, I may have just found a simpler
> approach.
>
> There are under 32 simple ValueType values, so we only really need
> 5 bits
> to represent those. ValueType is already a 32-bit type on most
> hosts; what
>
2007 Jun 22
3
[LLVMdev] a possible alternative for pre-legalize extended ValueTypes
After doing a bunch of work for moving pre-legalize extended ValueTypes
into a table in SelectionDAG, I may have just found a simpler approach.
There are under 32 simple ValueType values, so we only really need 5 bits
to represent those. ValueType is already a 32-bit type on most hosts; what
if we make use of the remaining 27 bits instead of using an external
table?
If we can assume that vector