Merge remote-tracking branch 'origin/main' into llama-merge

buddy-compiler · Aug 13, 2024 · 73b7da5 · 73b7da5
2 parents bdc9db7 + f2d027d
commit 73b7da5
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diff --git a/.gitmodules b/.gitmodules
@@ -7,3 +7,7 @@
 	path = thirdparty/mimalloc
 	url = https://github.com/microsoft/mimalloc.git
 	shallow = true
+[submodule "thirdparty/riscv-gnu-toolchain"]
+	path = thirdparty/riscv-gnu-toolchain
+	url = https://github.com/riscv-collab/riscv-gnu-toolchain.git
+	shallow = true
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -22,6 +22,7 @@ project(buddy-mlir LANGUAGES CXX C)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED YES)
+include(ExternalProject)
 
 #-------------------------------------------------------------------------------
 # Options and settings
@@ -41,13 +42,15 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR BUDDY_MLIR_OUT_OF_TREE_
     message(STATUS "Using MLIRConfig.cmake in: ${MLIR_DIR}")
     message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
 
-    set(LLVM_MLIR_BINARY_DIR ${MLIR_DIR}/../../../bin)
-    set(LLVM_MLIR_LIBRARY_DIR ${MLIR_DIR}/../../../lib)
-    set(LLVM_PROJECT_BUILD_DIR ${MLIR_DIR}/../../../)
-    if(NOT DEFINED LLVM_PROJECT_SOURCE_DIR)
-      get_filename_component(LLVM_PROJECT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/llvm/ ABSOLUTE)
+    # LLVM_MAIN_SRC_DIR is a private variable for the LLVM in-tree build.
+    # To provide compatibility for unifying the one-step and two-step build,
+    # we set LLVM_MAIN_SRC_DIR ourselves here.
+    # This could benefit users who want to specify a custom LLVM source directory,
+    # but also not interfere with normal users who just want to use the buddy-mlir provided LLVM sources.
+    if(NOT DEFINED LLVM_MAIN_SRC_DIR)
+      get_filename_component(LLVM_MAIN_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/llvm/llvm ABSOLUTE)
     endif()
-    set(LLVM_MLIR_SOURCE_DIR ${LLVM_PROJECT_SOURCE_DIR}/mlir)
+    set(MLIR_MAIN_SRC_DIR ${LLVM_MAIN_SRC_DIR}/../mlir)
 
     list(APPEND CMAKE_MODULE_PATH "${MLIR_CMAKE_DIR}")
     list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
@@ -65,16 +68,9 @@ else()
     #-------------------------------------------------------------------------------
     # MLIR/LLVM Configuration
     #-------------------------------------------------------------------------------
-
-    # Allow using out-of-tree llvm directory
-    set(LLVM_PROJECT_SOURCE_DIR ${LLVM_MAIN_SRC_DIR}/..)
-    message(STATUS "Using LLVM Project ${LLVM_PROJECT_SOURCE_DIR}")
-
     set(MLIR_MAIN_SRC_DIR ${LLVM_MAIN_SRC_DIR}/../mlir)
     set(MLIR_INCLUDE_DIR ${MLIR_MAIN_SRC_DIR}/include)
     set(MLIR_GENERATED_INCLUDE_DIR ${LLVM_BINARY_DIR}/tools/mlir/include)
-    set(LLVM_MLIR_BINARY_DIR ${CMAKE_BINARY_DIR}/bin)
-    set(MLIR_INCLUDE_DIRS "${MLIR_INCLUDE_DIR};${MLIR_GENERATED_INCLUDE_DIR}")
 endif()
 
 #-------------------------------------------------------------------------------
@@ -188,6 +184,24 @@ if(BUDDY_MLIR_USE_MIMALLOC)
   find_package(mimalloc REQUIRED)
 endif()
 
+#-------------------------------------------------------------------------------
+# The RISC-V toolchain
+#-------------------------------------------------------------------------------
+
+if(BUDDY_MLIR_ENABLE_RISCV_GNU_TOOLCHAIN)
+  set(RISCV_GNU_TOOLCHAIN_DIR "${BUDDY_SOURCE_DIR}/thirdparty/riscv-gnu-toolchain")
+  set(RISCV_GNU_TOOLCHAIN_INSTALL_DIR "${CMAKE_BINARY_DIR}/thirdparty/riscv-gnu-toolchain")
+  ExternalProject_Add(
+    riscv-gnu-toolchain
+    SOURCE_DIR        ${RISCV_GNU_TOOLCHAIN_DIR}
+    PREFIX            ${RISCV_GNU_TOOLCHAIN_INSTALL_DIR}
+    CONFIGURE_COMMAND ${RISCV_GNU_TOOLCHAIN_DIR}/configure --prefix=${RISCV_GNU_TOOLCHAIN_INSTALL_DIR}
+    BUILD_COMMAND     make clean && make linux build-qemu -j
+    BUILD_IN_SOURCE   TRUE
+    INSTALL_COMMAND   ""
+  )
+endif()
+
 #-------------------------------------------------------------------------------
 # Initialize Python packages
 #-------------------------------------------------------------------------------
@@ -201,6 +215,8 @@ if(BUDDY_MLIR_ENABLE_PYTHON_PACKAGES)
   # Create empty __init__.py files to make these directories Python packages
   file(WRITE ${BUDDY_MLIR_PYTHON_PACKAGES_DIR}/buddy/__init__.py "")
   file(WRITE ${BUDDY_MLIR_PYTHON_PACKAGES_DIR}/buddy/compiler/__init__.py "")
+
+  install(DIRECTORY ${BUDDY_MLIR_PYTHON_PACKAGES_DIR}/buddy DESTINATION python_packages)
 endif()
 
 #-------------------------------------------------------------------------------

diff --git a/README.md b/README.md
@@ -104,6 +104,17 @@ If you want to add domain-specific framework support, please add the following c
 | -------------- | ------------- | ------------- |
 | OpenCV  | `-DBUDDY_ENABLE_OPENCV=ON`  | Add `-DOpenCV_DIR=</PATH/TO/OPENCV/BUILD/>` or install OpenCV release version on your local device. |
 
+To build buddy-mlir with custom LLVM sources:
+
+```
+$ cmake -G Ninja .. \
+    -DMLIR_DIR=PATH/TO/LLVM/lib/cmake/mlir \
+    -DLLVM_DIR=PATH/TO/LLVM/lib/cmake/llvm \
+    -DLLVM_ENABLE_ASSERTIONS=ON \
+    -DCMAKE_BUILD_TYPE=RELEASE \
+    -DLLVM_MAIN_SRC_DIR=PATH/TO/LLVM_SOURCE
+```
+
 <h3 id="one-step">One-step building strategy</h3>
 
 If you only want to use our tools and integrate them more easily into your projects, you can choose to use the one-step build strategy.
@@ -134,7 +145,7 @@ This repository have nix flake support. You can follow the [nix installation ins
 nix develop .
 ```
 
-This will setup a bash shell with `clang`, `clangd`, `cmake`, `ninja`, and other necessary dependencies to build buddy-mlir from source.
+This will setup a bash shell with `clang`, `ccls`, `cmake`, `ninja`, and other necessary dependencies to build buddy-mlir from source.
 
 - If you want to use the buddy-mlir bintools
 

diff --git a/backend/include/llvm/IR/CMakeLists.txt b/backend/include/llvm/IR/CMakeLists.txt
@@ -1,4 +1,4 @@
-include_directories(${LLVM_PROJECT_SOURCE_DIR}/llvm/include/llvm/IR/)
+include_directories(${LLVM_MAIN_SRC_DIR}/include/llvm/IR/)
 
 set(LLVM_TARGET_DEFINITIONS IntrinsicsBuddyExt.td)
 tablegen(LLVM IntrinsicImpl.inc -gen-intrinsic-impl)

diff --git a/backend/llvm/lib/Analysis/CMakeLists.txt b/backend/llvm/lib/Analysis/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Analysis_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Analysis)
+set(LLVM_Analysis_DIR ${LLVM_MAIN_SRC_DIR}/lib/Analysis)
 
 add_llvm_component_library(LLVMBuddyAnalysis
 

diff --git a/backend/llvm/lib/AsmParser/CMakeLists.txt b/backend/llvm/lib/AsmParser/CMakeLists.txt
@@ -1,6 +1,6 @@
 # AsmParser
 
-set(LLVM_AsmParser_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/AsmParser)
+set(LLVM_AsmParser_DIR ${LLVM_MAIN_SRC_DIR}/lib/AsmParser)
 
 add_llvm_component_library(LLVMBuddyAsmParser
   ${LLVM_AsmParser_DIR}/LLLexer.cpp

diff --git a/backend/llvm/lib/Bitcode/Reader/CMakeLists.txt b/backend/llvm/lib/Bitcode/Reader/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Reader_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Bitcode/Reader)
+set(LLVM_Reader_DIR ${LLVM_MAIN_SRC_DIR}/lib/Bitcode/Reader)
 
 add_llvm_component_library(LLVMBuddyBitReader
   ${LLVM_Reader_DIR}/BitcodeAnalyzer.cpp

diff --git a/backend/llvm/lib/Bitcode/Writer/CMakeLists.txt b/backend/llvm/lib/Bitcode/Writer/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Writer_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Bitcode/Writer)
+set(LLVM_Writer_DIR ${LLVM_MAIN_SRC_DIR}/lib/Bitcode/Writer)
 
 
 add_llvm_component_library(LLVMBuddyBitWriter

diff --git a/backend/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt b/backend/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_AsmPrinter_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/CodeGen/AsmPrinter)
+set(LLVM_AsmPrinter_DIR ${LLVM_MAIN_SRC_DIR}/lib/CodeGen/AsmPrinter)
 
 add_llvm_component_library(LLVMBuddyAsmPrinter
   ${LLVM_AsmPrinter_DIR}/AccelTable.cpp

diff --git a/backend/llvm/lib/CodeGen/CMakeLists.txt b/backend/llvm/lib/CodeGen/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_CodeGen_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/CodeGen)
+set(LLVM_CodeGen_DIR ${LLVM_MAIN_SRC_DIR}/lib/CodeGen)
 
 add_llvm_component_library(LLVMBuddyCodeGen
   ${LLVM_CodeGen_DIR}/AggressiveAntiDepBreaker.cpp

diff --git a/backend/llvm/lib/CodeGen/MIRParser/CMakeLists.txt b/backend/llvm/lib/CodeGen/MIRParser/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_MIRParser_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/CodeGen/MIRParser)
+set(LLVM_MIRParser_DIR ${LLVM_MAIN_SRC_DIR}/lib/CodeGen/MIRParser)
 
 add_llvm_component_library(LLVMBuddyMIRParser
   ${LLVM_MIRParser_DIR}/MILexer.cpp

diff --git a/backend/llvm/lib/CodeGen/SelectionDAG/CMakeLists.txt b/backend/llvm/lib/CodeGen/SelectionDAG/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_SelectionDAG_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/CodeGen/SelectionDAG)
+set(LLVM_SelectionDAG_DIR ${LLVM_MAIN_SRC_DIR}/lib/CodeGen/SelectionDAG)
 
 add_llvm_component_library(LLVMBuddySelectionDAG
   ${LLVM_SelectionDAG_DIR}/DAGCombiner.cpp

diff --git a/backend/llvm/lib/IR/CMakeLists.txt b/backend/llvm/lib/IR/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_IR_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/IR)
+set(LLVM_IR_DIR ${LLVM_MAIN_SRC_DIR}/lib/IR)
 
 add_llvm_component_library(LLVMBuddyCore
   ${LLVM_IR_DIR}/AbstractCallSite.cpp

diff --git a/backend/llvm/lib/IRReader/CMakeLists.txt b/backend/llvm/lib/IRReader/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_IRReader_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/IRReader)
+set(LLVM_IRReader_DIR ${LLVM_MAIN_SRC_DIR}/lib/IRReader)
 
 add_llvm_component_library(LLVMBuddyIRReader
   ${LLVM_IRReader_DIR}/IRReader.cpp

diff --git a/backend/llvm/lib/Object/CMakeLists.txt b/backend/llvm/lib/Object/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Object_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Object)
+set(LLVM_Object_DIR ${LLVM_MAIN_SRC_DIR}/lib/Object)
 
 add_llvm_component_library(LLVMBuddyObject
   ${LLVM_Object_DIR}/Archive.cpp

diff --git a/backend/llvm/lib/ProfileData/CMakeLists.txt b/backend/llvm/lib/ProfileData/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_ProfileData_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/ProfileData)
+set(LLVM_ProfileData_DIR ${LLVM_MAIN_SRC_DIR}/lib/ProfileData)
 
 add_llvm_component_library(LLVMBuddyProfileData
   ${LLVM_ProfileData_DIR}/GCOV.cpp

diff --git a/backend/llvm/lib/Remarks/CMakeLists.txt b/backend/llvm/lib/Remarks/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Remarks_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Remarks)
+set(LLVM_Remarks_DIR ${LLVM_MAIN_SRC_DIR}/lib/Remarks)
 
 add_llvm_component_library(LLVMBuddyRemarks
   ${LLVM_Remarks_DIR}/BitstreamRemarkParser.cpp

diff --git a/backend/llvm/lib/Target/CMakeLists.txt b/backend/llvm/lib/Target/CMakeLists.txt
@@ -2,7 +2,7 @@ list(APPEND LLVM_COMMON_DEPENDS buddy_intrinsics_gen)
 
 list(APPEND LLVM_TABLEGEN_FLAGS -I ${LLVM_MAIN_SRC_DIR}/lib/Target)
 
-set(LLVM_Target_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Target)
+set(LLVM_Target_DIR ${LLVM_MAIN_SRC_DIR}/lib/Target)
 
 add_llvm_component_library(LLVMBuddyTarget
   ${LLVM_Target_DIR}/Target.cpp

diff --git a/backend/llvm/lib/Target/RISCV/CMakeLists.txt b/backend/llvm/lib/Target/RISCV/CMakeLists.txt
@@ -21,7 +21,7 @@ macro(buddy_add_llvm_target target_name)
   set( CURRENT_LLVM_TARGET LLVM${target_name} )
 endmacro(buddy_add_llvm_target)
 
-set(LLVM_TARGET_RISCV_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Target/RISCV)
+set(LLVM_TARGET_RISCV_DIR ${LLVM_MAIN_SRC_DIR}/lib/Target/RISCV)
 
 # ------------------------------------------------------------------------------
 # Configure RISC-V Buddy Extension.

diff --git a/backend/llvm/lib/Transforms/IPO/CMakeLists.txt b/backend/llvm/lib/Transforms/IPO/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_IPO_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Transforms/IPO)
+set(LLVM_IPO_DIR ${LLVM_MAIN_SRC_DIR}/lib/Transforms/IPO)
 
 add_llvm_component_library(LLVMBuddyIPO
   ${LLVM_IPO_DIR}/AlwaysInliner.cpp

diff --git a/backend/llvm/lib/Transforms/Scalar/CMakeLists.txt b/backend/llvm/lib/Transforms/Scalar/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Scalar_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Transforms/Scalar)
+set(LLVM_Scalar_DIR ${LLVM_MAIN_SRC_DIR}/lib/Transforms/Scalar)
 
 add_llvm_component_library(LLVMBuddyScalarOpts
   ${LLVM_Scalar_DIR}/ADCE.cpp

diff --git a/backend/llvm/lib/Transforms/Utils/CMakeLists.txt b/backend/llvm/lib/Transforms/Utils/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Utils_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Transforms/Utils)
+set(LLVM_Utils_DIR ${LLVM_MAIN_SRC_DIR}/lib/Transforms/Utils)
 
 
 add_llvm_component_library(LLVMBuddyTransformUtils

diff --git a/backend/llvm/lib/Transforms/Vectorize/CMakeLists.txt b/backend/llvm/lib/Transforms/Vectorize/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(LLVM_Vectorize_DIR ${LLVM_PROJECT_SOURCE_DIR}/llvm/lib/Transforms/Vectorize)
+set(LLVM_Vectorize_DIR ${LLVM_MAIN_SRC_DIR}/lib/Transforms/Vectorize)
 
 add_llvm_component_library(LLVMBuddyVectorize
   ${LLVM_Vectorize_DIR}/LoadStoreVectorizer.cpp

diff --git a/docs/RVVEnviroment.md b/docs/RVVEnviroment.md
@@ -0,0 +1,153 @@
+# Environment Setup Guide for MLIR and RVV Testing and Experiments
+
+This guide provides instructions on setting up an environment to test the RISC-V Vector Extension using the buddy-mlir project.
+The target platform for emulation is QEMU.
+
+## Requirements
+
+Before proceed any further make sure that you installed dependencies below
+
+* [LLVM dependecies](https://llvm.org/docs/GettingStarted.html#requirements)
+* [GNU Toolchain dependecies](https://github.com/riscv-collab/riscv-gnu-toolchain#prerequisites)
+* [QEMU dependecies](https://wiki.qemu.org/Hosts/Linux)
+
+## Build Steps
+
+> **_NOTE:_** The build process includes several heavy stages. It may take significant time to clone and build all components.
+
+0. Prepare `buddy-mlir` and Submodules
+
+```
+$ git clone https://github.com/buddy-compiler/buddy-mlir.git
+$ cd buddy-mlir
+$ git submodule update --init
+```
+
+1. Build Local LLVM/MLIR
+
+```
+$ cd buddy-mlir
+$ mkdir llvm/build
+$ cd llvm/build
+$ cmake -G Ninja ../llvm \
+    -DLLVM_ENABLE_PROJECTS="mlir;clang;openmp" \
+    -DLLVM_TARGETS_TO_BUILD="host;RISCV" \
+    -DLLVM_ENABLE_ASSERTIONS=ON \
+    -DOPENMP_ENABLE_LIBOMPTARGET=OFF \
+    -DCMAKE_BUILD_TYPE=RELEASE \
+    -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
+    -DPython3_EXECUTABLE=$(which python3)
+$ ninja check-clang check-mlir omp
+$ export BUILD_LOCAL_LLVM_DIR=$PWD
+```
+
+2. Build Local `buddy-mlir`
+
+```
+$ cd buddy-mlir
+$ mkdir build
+$ cd build
+$ cmake -G Ninja .. \
+    -DMLIR_DIR=$PWD/../llvm/build/lib/cmake/mlir \
+    -DLLVM_DIR=$PWD/../llvm/build/lib/cmake/llvm \
+    -DLLVM_ENABLE_ASSERTIONS=ON \
+    -DCMAKE_BUILD_TYPE=RELEASE \
+    -DBUDDY_MLIR_ENABLE_RISCV_GNU_TOOLCHAIN=ON \
+    -DBUDDY_MLIR_ENABLE_PYTHON_PACKAGES=ON \
+    -DPython3_EXECUTABLE=$(which python3)
+$ ninja
+$ ninja check-buddy
+$ export BUILD_RISCV_GNU_TOOLCHAIN_DIR=$PWD/thirdparty/riscv-gnu-toolchain/
+$ export RISCV_GNU_TOOLCHAIN_SYSROOT_DIR=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}/sysroot/
+```
+
+3. Build Cross-Compiled Clang
+
+```
+$ cd buddy-mlir
+$ mkdir llvm/build-cross-clang-rv
+$ cd llvm/build-cross-clang-rv
+$ cmake -G Ninja ../llvm \
+    -DLLVM_ENABLE_PROJECTS="clang" \
+    -DLLVM_TARGETS_TO_BUILD="RISCV" \
+    -DCMAKE_SYSTEM_NAME=Linux \
+    -DCMAKE_C_COMPILER=${BUILD_LOCAL_LLVM_DIR}/bin/clang \
+    -DCMAKE_CXX_COMPILER=${BUILD_LOCAL_LLVM_DIR}/bin/clang++ \
+    -DCMAKE_C_FLAGS="--target=riscv64-unknown-linux-gnu --sysroot=${RISCV_GNU_TOOLCHAIN_SYSROOT_DIR} --gcc-toolchain=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}" \
+    -DCMAKE_CXX_FLAGS="--target=riscv64-unknown-linux-gnu --sysroot=${RISCV_GNU_TOOLCHAIN_SYSROOT_DIR} --gcc-toolchain=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}" \
+    -DLLVM_TABLEGEN=${BUILD_LOCAL_LLVM_DIR}/bin/llvm-tblgen \
+    -DCLANG_TABLEGEN=${BUILD_LOCAL_LLVM_DIR}/bin/clang-tblgen \
+    -DLLVM_DEFAULT_TARGET_TRIPLE=riscv64-unknown-linux-gnu \
+    -DLLVM_TARGET_ARCH=RISCV64 \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DLLVM_ENABLE_ZSTD=Off
+$ ninja clang lli
+```
+
+4. Build Cross-Compiled MLIR
+
+```
+$ cd buddy-mlir
+$ mkdir llvm/build-cross-mlir-rv
+$ cd llvm/build-cross-mlir-rv
+$ cmake -G Ninja ../../llvm/llvm \
+    -DLLVM_ENABLE_PROJECTS="mlir" \
+    -DLLVM_BUILD_EXAMPLES=OFF \
+    -DCMAKE_CROSSCOMPILING=True \
+    -DLLVM_TARGET_ARCH=RISCV64 \
+    -DLLVM_TARGETS_TO_BUILD=RISCV \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DLLVM_ENABLE_ASSERTIONS=ON \
+    -DLLVM_NATIVE_ARCH=RISCV \
+    -DLLVM_HOST_TRIPLE=riscv64-unknown-linux-gnu \
+    -DLLVM_DEFAULT_TARGET_TRIPLE=riscv64-unknown-linux-gnu \
+    -DCMAKE_C_COMPILER=${BUILD_LOCAL_LLVM_DIR}/bin/clang \
+    -DCMAKE_CXX_COMPILER=${BUILD_LOCAL_LLVM_DIR}/bin/clang++ \
+    -DCMAKE_C_FLAGS="--target=riscv64-unknown-linux-gnu --sysroot=${RISCV_GNU_TOOLCHAIN_SYSROOT_DIR} --gcc-toolchain=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}" \
+    -DCMAKE_CXX_FLAGS="--target=riscv64-unknown-linux-gnu --sysroot=${RISCV_GNU_TOOLCHAIN_SYSROOT_DIR} --gcc-toolchain=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}" \
+    -DMLIR_TABLEGEN=${BUILD_LOCAL_LLVM_DIR}/bin/mlir-tblgen \
+    -DLLVM_TABLEGEN=${BUILD_LOCAL_LLVM_DIR}/bin/llvm-tblgen \
+    -DMLIR_LINALG_ODS_YAML_GEN=${BUILD_LOCAL_LLVM_DIR}/bin/mlir-linalg-ods-yaml-gen \
+    -DMLIR_PDLL_TABLEGEN=${BUILD_LOCAL_LLVM_DIR}/bin/mlir-pdll \
+    -DLLVM_ENABLE_ZSTD=Off
+$ ninja
+$ export BUILD_CROSS_MLIR_DIR=$PWD
+```
+
+5. Build Cross-Compiled `buddy-mlir`
+
+```
+$ cd buddy-mlir
+$ mkdir build-cross-rv
+$ cd build-cross-rv
+$ cmake -G Ninja .. \
+    -DCMAKE_SYSTEM_NAME=Linux \
+    -DMLIR_DIR=${BUILD_CROSS_MLIR_DIR}/lib/cmake/mlir \
+    -DLLVM_DIR=${BUILD_CROSS_MLIR_DIR}/lib/cmake/llvm \
+    -DCMAKE_CROSSCOMPILING=True \
+    -DLLVM_TARGETS_TO_BUILD=RISCV \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DLLVM_ENABLE_ASSERTIONS=ON \
+    -DLLVM_NATIVE_ARCH=RISCV \
+    -DLLVM_HOST_TRIPLE=riscv64-unknown-linux-gnu \
+    -DCMAKE_C_COMPILER=${BUILD_LOCAL_LLVM_DIR}/bin/clang \
+    -DCMAKE_CXX_COMPILER=${BUILD_LOCAL_LLVM_DIR}/bin/clang++ \
+    -DCMAKE_C_FLAGS="--target=riscv64-unknown-linux-gnu --sysroot=${RISCV_GNU_TOOLCHAIN_SYSROOT_DIR} --gcc-toolchain=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}" \
+    -DCMAKE_CXX_FLAGS="--target=riscv64-unknown-linux-gnu --sysroot=${RISCV_GNU_TOOLCHAIN_SYSROOT_DIR} --gcc-toolchain=${BUILD_RISCV_GNU_TOOLCHAIN_DIR}" \
+    -DLLVM_ENABLE_ZSTD=Off
+$ ninja StaticMLIRCRunnerUtils StaticMLIRRunnerUtils
+```
+
+## Testing RVV Environment
+
+```
+$ cd buddy-mlir
+$ cd examples/RVVDialect/
+$ make rvv-mul-add-run
+
+// Expected Output:
+Unranked Memref base@ = 0x55555729aaa0 rank = 1 offset = 0 sizes = [20] strides = [1] data = 
+[0,  12,  26,  42,  60,  80,  102,  126,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0]
+```
+
+Congratulations! Your RVV environment is now fully set up. Enjoy exploring and testing!