[PATCH] D17965: [NVPTX] Adds a new address space inference pass.

[Jingyue Wu via llvm-commits]

jingyue created this revision.
jingyue added reviewers: jholewinski, jlebar, tra.
jingyue added a subscriber: llvm-commits.
Herald added a subscriber: jholewinski.

The old address space inference pass (NVPTXFavorNonGenericAddrSpaces) is unable
to convert the address space of a pointer induction variable. This patch adds a
new pass called NVPTXInferAddressSpaces that overcomes that limitation using a
fixed-point data-flow analysis (see the file header comments for details).

The new pass is experimental and not enabled by default. Users can turn
it on by setting the -nvptx-use-infer-addrspace flag of llc.

http://reviews.llvm.org/D17965

Files:
  lib/Target/NVPTX/CMakeLists.txt
  lib/Target/NVPTX/NVPTX.h
  lib/Target/NVPTX/NVPTXFavorNonGenericAddrSpaces.cpp
  lib/Target/NVPTX/NVPTXInferAddressSpaces.cpp
  lib/Target/NVPTX/NVPTXTargetMachine.cpp
  test/CodeGen/NVPTX/access-non-generic.ll

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