This reverts commit 98f47131228cc73b5308e3cc6fd70375808594e3.
Without any (theoretical/practical) guarantee that all the allocas within
*entry* basic block are clustered together at the beginning of the block,
this patch is doomed to fail. Hence reverting it.
While initializing the LDS pointers within entry basic block of kernel(s), make
sure that the entry basic block is split after alloca instructions.
Reviewed By: rampitec
Differential Revision: https://reviews.llvm.org/D108971
Remove uses of to-be-deprecated API. In cases where the correct
element type was not immediately obvious to me, fall back to
explicit getPointerElementType().
The main motivation behind pointer replacement of LDS use within non-kernel
functions is - to *avoid* subsequent LDS lowering pass from directly packing
LDS (assume large LDS) into a struct type which would otherwise cause allocating
huge memory for struct instance within every kernel.
Reviewed By: rampitec
Differential Revision: https://reviews.llvm.org/D103225
