创建MyModulePass.cpp,定义一个模块级别的 Pass,run 函数实现了对模块的遍历,并输出每个函数的名称。 #include "llvm/IR/PassManager.h" // 包含 LLVM 新 Pass Manager 的头文件 #include "llvm/Passes/PassBuilder.h" // 提供 PassBuilder,用于注册和管理 Pass #include "llvm/Passes/PassPlugin.h" // 用...
If I pass the the -fuse-ld=lld flag, it seems use the correct linker (LLVM's LLD) with a simple non-openmp program and even plain vanilla OpenMP program (-fopenmp) but fails once you inject (-fopenmp-targets=x86_64) even though it does appear to be using LLVM's linker: clang vers...
在MyFunctionPass文件夹内创建MyFunctionPass.cpp、CMakeLists.txt两个文件,修改MyFunctionPass.cpp内容为: #include"llvm/Pass.h"#include"llvm/IR/Function.h"#include"llvm/Support/raw_ostream.h"#include"llvm/IR/LegacyPassManager.h"#include"llvm/Transforms/IPO/PassManagerBuilder.h"using namespace llvm;...
assert.h errno.h ldap_cdefs.h net/ readpassphrase.h syslog.h wctype.h atm/ eti.h ldap_features.h net-snmp/ regex.h tar.h wordexp.h bank/ execinfo.h ldap_schema.h netdb.h removefile.h tcl.h xar/ bitstring.h expat.h ldap_utf8.h netinet/ resolv.h tclDecls.h xattr_flags.h ...
//0:输入文件:找到源文件0:input,"main.m",objective-c//1:预处理阶段:处理宏的替换、头文件的导入等1:preprocessor,{0},objective-c-cpp-output//2:编译阶段:进行此法分析、语法分析、检查语法是否正确,生成IR2:compiler,{1},ir//3:后端:LLVM会通过一个一个的Pass去优化,每个Pass做一些事情,最终生成汇...
file://0012-Pass-PYTHON_EXECUTABLE-when-cross-compiling-for-nati.patch \ file://0013-Check-for-atomic-double-intrinsics.patch \ file://0014-libcxx-Add-compiler-runtime-library-to-link-step-for.patch \ file://0015-clang-llvm-cmake-Fix-configure-for-packages-using-fi.patch \ file://0015...
Since there are dozens of passes inside the compiler, each of these flags take a regular expression that identifies the name of the pass which should emit the associated diagnostic. For example, to get a report from the inliner, compile the code with: $ clang -O2 -Rpass=inline code.cc ...
{1}, ir//3 - 后端:这里LLVM会通过一个一个的pass去优化,每个pass做一些事情,最终生成汇编代码+- 3: backend, {2}, assembler//4 - 汇编代码生成目标文件+- 4: assembler, {3}, object//5 - 链接:链接需要的动态库和静态库,生成可执行文件+- 5: linker, {4}, image(镜像文件)//6 - 绑定:...
看上面的图,左边是编程语言,最终是机器码,在我们Xcode 中编写的代码首先会经过 clang 这个编译器前端,他会生成中间代码(IR),这个中间代码又经过一系列的优化,这些优化就是Pass,如果咱要编写中间代码优化代码的话,那就是编写Pass,最后就是生成机器码.
The pass_object_size(Type) attribute can be placed on function parameters to instruct clang to call __builtin_object_size(param, Type) at each callsite of said function, and implicitly pass the result of this call in as an invisible argument of type size_t directly after the parameter ann...