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llvm-6502/lib/Target/NVPTX
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Jingyue Wu eb653bd9d1 [NVPTX] run LSR before straight-line optimizations 
Summary:
Straight-line optimizations can simplify the loop body and make LSR's
cost analysis more precise. This significantly improves several Eigen3
CUDA benchmarks.

With this change, EigenContractionKernel runs up to 40% faster
(753ceee5f2/unsupported/Eigen/CXX11/src/Tensor/TensorContractionCuda.h (cl-502)).
EigenConvolutionKernel2D runs up to 10% faster
(753ceee5f2/unsupported/Eigen/CXX11/src/Tensor/TensorConvolution.h (cl-605)).

I have some difficulties writing small tests that benefit from this
reordering due to a seemingly issue with LSR (being discussed at
http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-July/088244.html).

See the review thread for the compilation time impact of GVN. 

Reviewers: eliben, jholewinski

Subscribers: llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D11304

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242982 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-23 04:59:07 +00:00
..
InstPrinter Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MCTargetDesc MC: Remove MCSubtargetInfo() default constructor 2015-07-10 22:43:42 +00:00
TargetInfo
cl_common_defines.h
CMakeLists.txt Add NVPTXPeephole pass to reduce unnecessary address cast 2015-06-24 20:20:16 +00:00
LLVMBuild.txt
Makefile
ManagedStringPool.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTX.h Add NVPTXPeephole pass to reduce unnecessary address cast 2015-06-24 20:20:16 +00:00
NVPTX.td
NVPTXAllocaHoisting.cpp
NVPTXAllocaHoisting.h
NVPTXAsmPrinter.cpp Move most user of TargetMachine::getDataLayout to the Module one 2015-07-16 06:11:10 +00:00
NVPTXAsmPrinter.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXAssignValidGlobalNames.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXFavorNonGenericAddrSpaces.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXFrameLowering.cpp [NVPTX] cleanups and refacotring in NVPTXFrameLowering.cpp 2015-06-30 21:28:31 +00:00
NVPTXFrameLowering.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXGenericToNVVM.cpp
NVPTXImageOptimizer.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXInstrFormats.td
NVPTXInstrInfo.cpp
NVPTXInstrInfo.h
NVPTXInstrInfo.td
NVPTXIntrinsics.td
NVPTXISelDAGToDAG.cpp [NVPTX] make load on global readonly memory to use ldg 2015-07-20 21:28:54 +00:00
NVPTXISelDAGToDAG.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXISelLowering.cpp Remove getDataLayout() from TargetLowering 2015-07-09 02:09:52 +00:00
NVPTXISelLowering.h Re-instate the EVT parameter to getScalarShiftAmountTy() for OOT user 2015-07-09 15:12:23 +00:00
NVPTXLowerAggrCopies.cpp Use inbounds GEPs for memcpy and memset lowering 2015-07-17 16:42:33 +00:00
NVPTXLowerAggrCopies.h
NVPTXLowerAlloca.cpp
NVPTXLowerKernelArgs.cpp [NVPTX] noop when kernel pointers are already global 2015-06-26 22:35:43 +00:00
NVPTXMachineFunctionInfo.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXMCExpr.cpp
NVPTXMCExpr.h
NVPTXPeephole.cpp [NVPTX] Move NVPTXPeephole after NVPTXPrologEpilogPass 2015-07-01 20:08:06 +00:00
NVPTXPrologEpilogPass.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXRegisterInfo.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXRegisterInfo.h
NVPTXRegisterInfo.td Add NVPTXPeephole pass to reduce unnecessary address cast 2015-06-24 20:20:16 +00:00
NVPTXReplaceImageHandles.cpp Cosmetic cleanups - NFC 2015-07-08 16:33:21 +00:00
NVPTXSection.h
NVPTXSubtarget.cpp Remove getDataLayout() from TargetSelectionDAGInfo (had no users) 2015-07-09 02:10:08 +00:00
NVPTXSubtarget.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXTargetMachine.cpp [NVPTX] run LSR before straight-line optimizations 2015-07-23 04:59:07 +00:00
NVPTXTargetMachine.h
NVPTXTargetObjectFile.h Remove DataLayout from TargetLoweringObjectFile, redirect to Module 2015-07-16 06:04:17 +00:00
NVPTXTargetTransformInfo.cpp Enable partial and runtime loop unrolling for NVPTX. 2015-07-13 18:33:21 +00:00
NVPTXTargetTransformInfo.h Enable partial and runtime loop unrolling for NVPTX. 2015-07-13 18:33:21 +00:00
NVPTXUtilities.cpp
NVPTXUtilities.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
NVPTXVector.td
NVVMReflect.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00