mirror of
https://github.com/revng/revng
synced 2026-06-21 14:07:57 +00:00
Pietro Fezzardi
08c76374a2
This fixes an issue causing crashes when calling the public API `decompileFunction`, that was internally adding a `MakeEnvNullPass` (formerly a `ModulePass`) to a `FunctionPassManager.
37 lines
1.0 KiB
C++
37 lines
1.0 KiB
C++
//
|
|
// Copyright (c) rev.ng Srls. See LICENSE.md for details.
|
|
//
|
|
|
|
#include "llvm/IR/Constants.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/Module.h"
|
|
|
|
#include "revng/Support/IRHelpers.h"
|
|
|
|
#include "revng-c/MakeEnvNull/MakeEnvNull.h"
|
|
|
|
bool MakeEnvNullPass::runOnFunction(llvm::Function &F) {
|
|
if (not F.getMetadata("revng.func.entry"))
|
|
return false;
|
|
|
|
llvm::Module *M = F.getParent();
|
|
llvm::GlobalVariable *Env = M->getGlobalVariable("env",
|
|
/* AllowInternal */ true);
|
|
|
|
auto *EnvType = Env->getType();
|
|
revng_assert(EnvType->isPointerTy());
|
|
auto *Null = llvm::Constant::getNullValue(EnvType);
|
|
if (replaceAllUsesInFunctionWith(&F, Env, Null))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
char MakeEnvNullPass::ID = 0;
|
|
|
|
using llvm::RegisterPass;
|
|
using Pass = MakeEnvNullPass;
|
|
static RegisterPass<Pass> RegisterMakeEnvNull("make-env-null",
|
|
"Pass that substitutes env with "
|
|
"a null pointer");
|