Initialize LLVM for native target codegen

Author: weliveindetail

CMakeLists.txt

@@ -46,11 +46,37 @@ target_include_directories(JitFromScratch PRIVATE
 )
 
 set(llvm_libs
+  LLVMAggressiveInstCombine
+  LLVMAnalysis
+  LLVMAsmPrinter
   LLVMBinaryFormat
+  LLVMBitReader
+  LLVMBitWriter
+  LLVMBitstreamReader
+  LLVMCodeGen
   LLVMCore
+  LLVMDebugInfoCodeView
+  LLVMDebugInfoDWARF
+  LLVMDebugInfoMSF
   LLVMDemangle
+  LLVMGlobalISel
+  LLVMInstCombine
+  LLVMMC
+  LLVMMCDisassembler
+  LLVMMCParser
+  LLVMObject
+  LLVMProfileData
   LLVMRemarks
+  LLVMScalarOpts
+  LLVMSelectionDAG
   LLVMSupport
+  LLVMTarget
+  LLVMTransformUtils
+  LLVMX86AsmParser
+  LLVMX86CodeGen
+  LLVMX86Desc
+  LLVMX86Info
+  LLVMX86Utils
 )
 
 separate_arguments(LLVM_DEFINITIONS)

main.cpp

@@ -1,4 +1,6 @@
 #include <llvm/Support/Format.h>
+#include <llvm/Support/InitLLVM.h>
+#include <llvm/Support/TargetSelect.h>
 #include <llvm/Support/raw_ostream.h>
 
 using namespace llvm;
@@ -37,6 +39,12 @@ int *integerDistances(const int (&x)[sizeOfArray], int *y) {
 }
 
 int main(int argc, char **argv) {
+  InitLLVM X(argc, argv);
+
+  InitializeNativeTarget();
+  InitializeNativeTargetAsmPrinter();
+  InitializeNativeTargetAsmParser();
+
   int x[]{0, 1, 2};
   int y[]{3, 1, -1};
   int *z = integerDistances(x, y);