Julia RISCV (#18)

* refactor (julia): riscv asm gen, compute_root

* add (julia): gen asm, header

* refactor: halide runtime

* add: rutime object

.github/workflows/test.yaml

@@ -45,7 +45,7 @@ jobs:
         cd build
         rm ${{ github.workspace }}/aot/*
         ./perf_algo --gtest_filter=*halide*
-        mv *.h *.s ${{ github.workspace }}/aot
+        mv *.h *.s halide_runtime.o ${{ github.workspace }}/aot
 
     - name: Build for RISC-V
       run: |

CMakeLists.txt

@@ -67,6 +67,7 @@ file(GLOB SOURCES src/*.cpp)
 if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "riscv64")
   file(GLOB ASM aot/*.s)
   list(APPEND SOURCES ${ASM})
+  list(APPEND SOURCES aot/halide_runtime.o)
 endif()
 
 add_library(algos SHARED ${SOURCES})

aot/halide_julia_rv.h

@@ -0,0 +1,56 @@
+#ifndef HALIDE__halide_julia_rv_h
+#define HALIDE__halide_julia_rv_h
+#include <stdint.h>
+
+// Forward declarations of the types used in the interface
+// to the Halide pipeline.
+//
+// For the definitions of these structs, include HalideRuntime.h
+
+// Halide's representation of a multi-dimensional array.
+// Halide::Runtime::Buffer is a more user-friendly wrapper
+// around this. Its declaration is in HalideBuffer.h
+struct halide_buffer_t;
+
+// Metadata describing the arguments to the generated function.
+// Used to construct calls to the _argv version of the function.
+struct halide_filter_metadata_t;
+
+#ifndef HALIDE_MUST_USE_RESULT
+#ifdef __has_attribute
+#if __has_attribute(nodiscard)
+#define HALIDE_MUST_USE_RESULT [[nodiscard]]
+#elif __has_attribute(warn_unused_result)
+#define HALIDE_MUST_USE_RESULT __attribute__((warn_unused_result))
+#else
+#define HALIDE_MUST_USE_RESULT
+#endif
+#else
+#define HALIDE_MUST_USE_RESULT
+#endif
+#endif
+
+#ifndef HALIDE_FUNCTION_ATTRS
+#define HALIDE_FUNCTION_ATTRS
+#endif
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+HALIDE_FUNCTION_ATTRS
+int halide_julia_rv(struct halide_buffer_t *_f0_buffer);
+
+HALIDE_FUNCTION_ATTRS
+int halide_julia_rv_argv(void **args);
+
+HALIDE_FUNCTION_ATTRS
+const struct halide_filter_metadata_t *halide_julia_rv_metadata();
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif