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FPGA Fast recompile #700

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Merged
merged 4 commits into from
Oct 13, 2021
Merged

FPGA Fast recompile #700

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8e0bdb3
ONSAM-1414 Broken Link in Headers (#685)
JoeOster Sep 29, 2021
4bed52e
fix deprecation notice (#682)
ericlars Sep 29, 2021
f8d7c11
Improve CMakeLists.txt for FPGA fast_recompile
mendell27 Oct 12, 2021
a56890f
Merge branch 'oneapi-src:master' into fast_recompile
mendell27 Oct 12, 2021
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66 changes: 31 additions & 35 deletions DirectProgramming/DPC++FPGA/Tutorials/GettingStarted/fast_recompile/src/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -20,48 +20,43 @@ if(WIN32)
set(WIN_FLAG "/EHsc")
endif()

set(EMULATOR_COMPILE_FLAGS -Wall ${WIN_FLAG} -fintelfpga -DFPGA_EMULATOR -c)
set(EMULATOR_LINK_FLAGS -fintelfpga)
set(HARDWARE_COMPILE_FLAGS -Wall ${WIN_FLAG} -fintelfpga -c)
set(HARDWARE_LINK_FLAGS -fintelfpga -Xshardware -Xsboard=${FPGA_BOARD} ${USER_HARDWARE_FLAGS})
# A DPC++ ahead-of-time (AoT) compile processes the device code in two stages.
# 1. The "compile" stage compiles the device code to an intermediate representation (SPIR-V).
# 2. The "link" stage invokes the compiler's FPGA backend before linking.
# For this reason, FPGA backend flags must be passed as link flags in CMake.
set(EMULATOR_COMPILE_FLAGS "-Wall ${WIN_FLAG} -fintelfpga -DFPGA_EMULATOR")
set(EMULATOR_LINK_FLAGS "-fintelfpga")
set(HARDWARE_COMPILE_FLAGS "-Wall ${WIN_FLAG} -fintelfpga")
set(HARDWARE_LINK_FLAGS "-fintelfpga -Xshardware -Xsboard=${FPGA_BOARD} ${USER_HARDWARE_FLAGS}")
# use cmake -D USER_HARDWARE_FLAGS=<flags> to set extra flags for FPGA backend compilation

###############################################################################
### FPGA Emulator
###############################################################################
# To compile manually:
# dpcpp -fintelfpga -DFPGA_EMULATOR -c host.cpp -o host_emu.o
# dpcpp -fintelfpga -DFPGA_EMULATOR -c kernel.cpp -o dev_emu.o
# dpcpp -fintelfpga -fsycl-link=image dev_emu.o -o dev_image_emu.a
# dpcpp -fintelfpga host_emu.o dev_image_emu.a -o fast_recompile.fpga

if(WIN32)
set(EMULATOR_TARGET ${EMULATOR_TARGET}.exe)
endif()
# To compile in a single command:
# dpcpp -fintelfpga -DFPGA_EMULATOR host.cpp kernel.cpp -o fast_recompile.fpga_emu
# CMake executes:
# [compile] dpcpp -fintelfpga -DFPGA_EMULATOR -o host.cpp.o -c host.cpp
# [compile] dpcpp -fintelfpga -DFPGA_EMULATOR -o kernel.cpp.o -c kernel.cpp
# [link] dpcpp -fintelfpga host.cpp.o kernel.cpp.o -o fast_recompile.fpga_emu
add_executable(${EMULATOR_TARGET} ${HOST_SOURCE_FILE} ${DEVICE_SOURCE_FILE})
set_target_properties(${EMULATOR_TARGET} PROPERTIES COMPILE_FLAGS "${EMULATOR_COMPILE_FLAGS}")
set_target_properties(${EMULATOR_TARGET} PROPERTIES LINK_FLAGS "${EMULATOR_LINK_FLAGS}")
add_custom_target(fpga_emu DEPENDS ${EMULATOR_TARGET})
set(HOST_EMU_OBJ "host_emu.o")
set(DEVICE_EMU_OBJ "dev_emu.o")
set(DEVICE_IMAGE_EMU_OBJ "dev_image_emu.a")

set(CMAKE_CXX_FLAGS_LIST ${CMAKE_CXX_FLAGS_LIST})
separate_arguments(CMAKE_CXX_FLAGS_LIST)

add_custom_command(OUTPUT ${HOST_EMU_OBJ}
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS_LIST} ${EMULATOR_COMPILE_FLAGS}
${CMAKE_CURRENT_SOURCE_DIR}/${HOST_SOURCE_FILE} -o ${HOST_EMU_OBJ}
DEPENDS ${HOST_SOURCE_FILE} ${KERNEL_HEADER_FILE})

add_custom_command(OUTPUT ${DEVICE_EMU_OBJ}
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS_LIST} ${EMULATOR_COMPILE_FLAGS} ${CMAKE_CURRENT_SOURCE_DIR}/${DEVICE_SOURCE_FILE} -o ${DEVICE_EMU_OBJ}
DEPENDS ${DEVICE_SOURCE_FILE} ${KERNEL_HEADER_FILE})

add_custom_command(OUTPUT ${DEVICE_IMAGE_EMU_OBJ}
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS_LIST} ${EMULATOR_LINK_FLAGS} -fsycl-link=image ${DEVICE_EMU_OBJ} -o ${DEVICE_IMAGE_EMU_OBJ}
DEPENDS ${DEVICE_EMU_OBJ})
###############################################################################
### Generate Report
###############################################################################
# To compile manually:
# dpcpp -fintelfpga -Xshardware -Xsboard=<FPGA_BOARD> -fsycl-link=early host.cpp kernel.cpp -o fast_compile_report.a
set(FPGA_EARLY_IMAGE ${TARGET_NAME}_report.a)
# The compile output is not an executable, but an intermediate compilation result unique to DPC++.
add_executable(${FPGA_EARLY_IMAGE} ${HOST_SOURCE_FILE} ${DEVICE_SOURCE_FILE})
add_custom_target(report DEPENDS ${FPGA_EARLY_IMAGE})
set_target_properties(${FPGA_EARLY_IMAGE} PROPERTIES COMPILE_FLAGS ${HARDWARE_COMPILE_FLAGS})
set_target_properties(${FPGA_EARLY_IMAGE} PROPERTIES LINK_FLAGS "${HARDWARE_LINK_FLAGS} -fsycl-link=early")
# fsycl-link=early stops the compiler after RTL generation, before invoking Quartus®

add_custom_command(OUTPUT ${EMULATOR_TARGET}
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS_LIST} -fintelfpga ${HOST_EMU_OBJ} ${DEVICE_IMAGE_EMU_OBJ} -o ${CMAKE_BINARY_DIR}/${EMULATOR_TARGET}
DEPENDS ${HOST_EMU_OBJ} ${DEVICE_IMAGE_EMU_OBJ})

###############################################################################
### FPGA Hardware
Expand All @@ -83,9 +78,10 @@ set(CMAKE_CXX_FLAGS_LIST "${CMAKE_CXX_FLAGS}")
separate_arguments(CMAKE_CXX_FLAGS_LIST)
set(HARDWARE_LINK_FLAGS_LIST "${HARDWARE_LINK_FLAGS}")
separate_arguments(HARDWARE_LINK_FLAGS_LIST)


add_custom_command(OUTPUT ${HOST_OBJ}
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS_LIST} ${HARDWARE_COMPILE_FLAGS} ${CMAKE_CURRENT_SOURCE_DIR}/${HOST_SOURCE_FILE} -o ${HOST_OBJ}
COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS_LIST} ${HARDWARE_COMPILE_FLAGS} -c ${CMAKE_CURRENT_SOURCE_DIR}/${HOST_SOURCE_FILE} -o ${HOST_OBJ}
DEPENDS ${HOST_SOURCE_FILE} ${KERNEL_HEADER_FILE})

add_custom_command(OUTPUT ${DEVICE_IMAGE_OBJ}
Expand Down