[PATCH] D46147: [NVPTX] Added a feature to use short pointers for const/local/shared AS.

[Artem Belevich via Phabricator via llvm-commits]

tra created this revision.
tra added a reviewer: jlebar.
Herald added subscribers: bixia, hiraditya, sanjoy, jholewinski.

Const/local/shared address spaces are all < 4GB and we can always use
32-bit pointers to access them. This has substantial performance impact
on kernels that uses shared memory for intermediary results.

The feature is disabled by default.


https://reviews.llvm.org/D46147

Files:
  llvm/lib/Target/NVPTX/NVPTX.td
  llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
  llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
  llvm/lib/Target/NVPTX/NVPTXInstrInfo.td
  llvm/lib/Target/NVPTX/NVPTXIntrinsics.td
  llvm/lib/Target/NVPTX/NVPTXSubtarget.h
  llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
  llvm/test/CodeGen/NVPTX/addrspacecast.ll
  llvm/test/CodeGen/NVPTX/ld-addrspace.ll
  llvm/test/CodeGen/NVPTX/st-addrspace.ll

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