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4 Commits

Author SHA1 Message Date
Jingyue Wu 3203818bf7 [NVPTX] noop when kernel pointers are already global 
Summary:
Some front ends make kernel pointers global already. In that case,
handlePointerParams does nothing.

Test Plan: more tests in lower-kernel-ptr-arg.ll

Reviewers: grosser

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D10779

llvm-svn: 240849
 2015-06-26 22:35:43 +00:00
Jingyue Wu a2f6027a31 [NVPTX] roll forward r239082 
NVPTXISelDAGToDAG translates "addrspacecast to param" to
NVPTX::nvvm_ptr_gen_to_param

Added an llc test in bug21465.

llvm-svn: 239100
 2015-06-04 21:28:26 +00:00
Jingyue Wu b8f38668d5 Revert r239082 
llc crashed for NVPTX backend

llvm-svn: 239094
 2015-06-04 21:07:08 +00:00
Jingyue Wu f3a8079b75 [NVPTX] kernel pointer arguments point to the global address space 
Summary:
With this patch, NVPTXLowerKernelArgs converts a kernel pointer argument to a
pointer in the global address space. This change, along with
NVPTXFavorNonGenericAddrSpaces, allows the NVPTX backend to emit ld.global.*
and st.global.* for accessing kernel pointer arguments.

Minor changes:
1. refactor: extract function convertToPointerInAddrSpace
2. fix a bug in the test case in bug21465.ll

Test Plan: lower-kernel-ptr-arg.ll

Reviewers: eliben, meheff, jholewinski

Reviewed By: jholewinski

Subscribers: wengxt, jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D10154

llvm-svn: 239082
 2015-06-04 20:19:38 +00:00