Update to LLVM 20

Author: yuygfgg

.gitignore

@@ -0,0 +1,4 @@
+.cache/*
+.DS_Store
+checks.json
+.vscode/*

expr2/reactor/LLVMJIT.cpp

@@ -30,6 +30,7 @@ __pragma(warning(push))
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
 #include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
+#include "llvm/ExecutionEngine/Orc/AbsoluteSymbols.h"
 #include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/Passes/PassBuilder.h"

meson.build

@@ -87,7 +87,7 @@ if use_asmjit
 else
   sources = sources_common + sources_expr2
   incdir += include_directories('expr2/reactor')
-  deps += dependency('llvm', version: ['>= 10.0', '< 20'], method: 'config-tool', static: get_option('static-llvm'),
+  deps += dependency('llvm', version: ['>= 10.0', '< 21'], method: 'config-tool', static: get_option('static-llvm'),
     modules: [
       'asmprinter', 'executionengine', 'target', 'orcjit', 'native',
     ])