These are our first instructions which yield ssavalues.
For OpAccessChain, also track the base pointer (which we always know at
compile time, until we do full variable pointers support).
The value representation for OpAccessChain's result has two parts:
- per-lane Int offset into whatever the thing is
- shared (and statically known) base reference.
Bug: b/124388146
Change-Id: I364375719b6e396b802de06093454c8f0e76adb6
Reviewed-on: https://swiftshader-review.googlesource.com/c/24598Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Chris Forbes <chrisforbes@google.com>
