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cleaning up some makefiles
Adel Ejjeh authored
02f13382
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user avatar 02f13382
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Makefile
README.md
README.md

Compilation of a project with HPVM is a multi-step process. Let's look at the compilation of the pipeline test for gpu as an example.

clang is used to produce an LLVM IR file that contains the HPVM intrinsics in the form of function calls.

/.../hpvm/build/bin/clang -Isrc/ -I -I/.../hpvm/llvm/include -I../include -I/.../hpvm/build/include -ffast-math -O3 -fno-lax-vector-conversions -fno-vectorize -fno-slp-vectorize -I/.../hpvm/llvm/include -I../include -I/.../hpvm/build/include -DDEVICE=GPU_TARGET -emit-llvm -S -o build/main.ll src/main.cc

opt is used to invoke the GenHPVM pass, which converts the HPVM function calls to LLVM intrinsics.

/.../hpvm/build/bin/opt -debug-only=genhpvm -load LLVMGenHPVM.so -genhpvm -globaldce -hpvm-timers-gen build/main.ll -S -o build/main.hpvm.ll

opt is used again to invoke the BuildDFG pass, which converts the textual representation to the internal HPVM representation.

/.../hpvm/build/bin/opt -debug -load LLVMBuildDFG.so -load LLVMLocalMem.so -load LLVMDFG2LLVM_NVPTX.so -load LLVMDFG2LLVM_X86.so -load LLVMClearDFG.so -localmem -dfg2llvm-nvptx -dfg2llvm-x86 -clearDFG -hpvm-timers-x86 -hpvm-timers-ptx -S build/main.hpvm.ll -o build/pipeline-gpu.host.ll

llvm-cbe is a C backend for LLVM. It is used here to create the OpenCL kernel.

/.../hpvm/build/bin/llvm-cbe -debug build/gpu/main.hpvm.ll.kernels.ll -o build/gpu/main.hpvm.ll.kernels.cl

clang is used again to compile a separate source file that contains I/O code.

/.../hpvm/build/bin/clang -Isrc/ -I -I/.../hpvm/llvm/include -I../include -I/.../hpvm/build/include -ffast-math -O3 -fno-lax-vector-conversions -fno-vectorize -fno-slp-vectorize -I/.../hpvm/llvm/include -I../include -I/.../hpvm/build/include -emit-llvm -S -o build/gpu/io.ll src/io.cc

llvm-link is used to link against the HPVM runtime.

/.../hpvm/build/bin/llvm-link build/gpu/pipeline-gpu.host.ll build/gpu/io.ll /.../hpvm/llvm/tools/hpvm/projects/hpvm-rt/hpvm-rt.ll -S -o build/gpu/pipeline-gpu.linked.ll

clang++ is used to do the final linking against OpenCL and emit the binary.

/.../hpvm/build/bin/clang++ -O3 `pkg-config opencv --libs` -lm -lpthread -lrt -lOpenCL -L/software/cuda-9.1/lib64 build/gpu/pipeline-gpu.linked.ll -o pipeline-gpu