[RISC-V] "Unsupported CPU type" exception on riscv64 host #7078
Description
- Tested on x86 Ubuntu 20.04
An exception https://github.com/llvm/llvm-project/blob/de9d80c1c579e39cc658a508f1d4ba1cd792e4d5/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp#L1076 appears when trying run cross-compiled Halide on RISC-V QEMU machine.
Unsupported CPU type!
UNREACHABLE executed at /home/dkurt/llvm-project/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp:1076!
Aborted
Application code
#include "Halide.h"
using namespace Halide;
int main(int argc, char** argv) {
Func brighter;
Var x, y;
Param<uint8_t> myoffset("myoffset");
ImageParam input(type_of<uint8_t>(), 2);
std::vector<Argument> args(2);
args[0] = input;
args[1] = myoffset;
brighter(x, y) = input(x, y) * myoffset;
brighter.bound(x, 0, 64).bound(y, 0, 64);
Target target = get_host_target();
std::cout << target << std::endl;
brighter.print_loop_nest();
Buffer<uint8_t> output(64, 64);
brighter.realize(output, target);
}include_directories(
/home/dkurt/halide-install/include/
)
link_directories(
/home/dkurt/halide-install/lib
)
set(CMAKE_C_COMPILER riscv64-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER riscv64-linux-gnu-g++)
set(CMAKE_CXX_FLAGS "-std=c++17")
add_executable(app main.cpp)
target_link_libraries(app Halide)export LD_LIBRARY_PATH=/usr/riscv64-linux-gnu/lib/:$LD_LIBRARY_PATH
qemu-riscv64-static ./appSteps to reproduce:
- Install toolchain
sudo apt-get install -y qemu-user-static crossbuild-essential-riscv64
- Build LLVM
riscv64.toolchain.cmake
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR riscv64)
set(CMAKE_C_COMPILER riscv64-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER riscv64-linux-gnu-g++)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
find_program(QEMU_RISCV64 qemu-riscv64-static)
if (QEMU_RISCV64)
set(CMAKE_CROSSCOMPILING_EMULATOR ${QEMU_RISCV64})
endif ()git clone --depth 1 --branch llvmorg-15.0.2 https://github.com/llvm/llvm-project.git
cmake -DCMAKE_BUILD_TYPE=Release \
-DCMAKE_TOOLCHAIN_FILE=$(realpath riscv64.toolchain.cmake) \
-DLLVM_ENABLE_PROJECTS="clang;lld;clang-tools-extra" \
-DLLVM_TARGETS_TO_BUILD="RISCV" \
-DLLVM_TARGET_ARCH="riscv64" \
-DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ASSERTIONS=ON \
-DLLVM_ENABLE_EH=ON -DLLVM_ENABLE_RTTI=ON -DLLVM_BUILD_32_BITS=OFF \
-S llvm-project/llvm -B llvm-build
cmake --build llvm-build -j$(nproc --all)
cmake --install llvm-build --prefix llvm-install- Clone Halide (use custom branch as recommended in Ramp of lanes <= 1 exception when cross-compile Halide for RISC-V #7070)
git clone --depth 1 -b riscv_update https://github.com/halide/Halide- Apply Halide patch (see discussion at Fix Halide cross-compilation #7073)
patch
index cc9f6805b..9b3c25751 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -541,7 +541,7 @@ endif ()
if (BUILD_SHARED_LIBS)
message(STATUS "Building autoschedulers enabled")
- add_subdirectory(autoschedulers)
+ # add_subdirectory(autoschedulers)
else ()
message(STATUS "Building autoschedulers disabled (static Halide)")
endif ()
diff --git a/src/runtime/CMakeLists.txt b/src/runtime/CMakeLists.txt
index b4888c82e..a1ae1e205 100644
--- a/src/runtime/CMakeLists.txt
+++ b/src/runtime/CMakeLists.txt
@@ -243,14 +243,14 @@ foreach (i IN LISTS RUNTIME_CPP)
target_compile_definitions(${basename} PRIVATE ${RUNTIME_DEFINES})
else()
add_custom_command(OUTPUT "${LL}"
- COMMAND ${CMAKE_C_COMPILER_LAUNCHER} $<TARGET_FILE:clang> ${clang_flags} -o "${LL}" "$<SHELL_PATH:${SOURCE}>"
+ COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} ${CMAKE_C_COMPILER_LAUNCHER} $<TARGET_FILE:clang> ${clang_flags} -o "${LL}" "$<SHELL_PATH:${SOURCE}>"
DEPENDS "${SOURCE}"
DEPFILE "${basename}.d"
VERBATIM)
endif()
add_custom_command(OUTPUT "${BC}"
- COMMAND llvm-as "${LL}" -o "${BC}"
+ COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:llvm-as> "${LL}" -o "${BC}"
DEPENDS "${LL}"
VERBATIM)
@@ -294,7 +294,7 @@ foreach (i IN LISTS RUNTIME_LL)
endif ()
add_custom_command(OUTPUT "${BC}"
- COMMAND llvm-as "${LL_TRANSFORMED}" -o "${BC}"
+ COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:llvm-as> "${LL_TRANSFORMED}" -o "${BC}"
DEPENDS "${LL_TRANSFORMED}"
VERBATIM)
add_custom_command(OUTPUT "${INITMOD}"- Build Halide
sudo ln -s /usr/riscv64-linux-gnu/lib/ld-linux-riscv64-lp64d.so.1 /lib/ld-linux-riscv64-lp64d.so.1
cmake -DLLVM_DIR=$(realpath llvm-install/lib/cmake/llvm) \
-DClang_DIR=$(realpath llvm-install/lib/cmake/clang) \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_TOOLCHAIN_FILE=$(realpath riscv64.toolchain.cmake) \
-DWITH_TESTS=OFF \
-DWITH_TUTORIALS=OFF \
-DWITH_PYTHON_BINDINGS=OFF \
-S Halide -B halide-build
cmake --build halide-build -j$(nproc --all)
cmake --install halide-build --prefix halide-install