forked from OSchip/llvm-project
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
//===-- NVPTXAssignValidGlobalNames.cpp - Assign valid names to globals ---===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Clean up the names of global variables in the module to not contain symbols
|
|
// that are invalid in PTX.
|
|
//
|
|
// Currently NVPTX, like other backends, relies on generic symbol name
|
|
// sanitizing done by MC. However, the ptxas assembler is more stringent and
|
|
// disallows some additional characters in symbol names. This pass makes sure
|
|
// such names do not reach MC at all.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "NVPTX.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/GlobalVariable.h"
|
|
#include "llvm/IR/LegacyPassManager.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include <string>
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
/// NVPTXAssignValidGlobalNames
|
|
class NVPTXAssignValidGlobalNames : public ModulePass {
|
|
public:
|
|
static char ID;
|
|
NVPTXAssignValidGlobalNames() : ModulePass(ID) {}
|
|
|
|
bool runOnModule(Module &M) override;
|
|
|
|
/// Clean up the name to remove symbols invalid in PTX.
|
|
std::string cleanUpName(StringRef Name);
|
|
};
|
|
}
|
|
|
|
char NVPTXAssignValidGlobalNames::ID = 0;
|
|
|
|
namespace llvm {
|
|
void initializeNVPTXAssignValidGlobalNamesPass(PassRegistry &);
|
|
}
|
|
|
|
INITIALIZE_PASS(NVPTXAssignValidGlobalNames, "nvptx-assign-valid-global-names",
|
|
"Assign valid PTX names to globals", false, false)
|
|
|
|
bool NVPTXAssignValidGlobalNames::runOnModule(Module &M) {
|
|
for (GlobalVariable &GV : M.globals()) {
|
|
// We are only allowed to rename local symbols.
|
|
if (GV.hasLocalLinkage()) {
|
|
// setName doesn't do extra work if the name does not change.
|
|
// Note: this does not create collisions - if setName is asked to set the
|
|
// name to something that already exists, it adds a proper postfix to
|
|
// avoid collisions.
|
|
GV.setName(cleanUpName(GV.getName()));
|
|
}
|
|
}
|
|
|
|
// Do the same for local functions.
|
|
for (Function &F : M.functions())
|
|
if (F.hasLocalLinkage())
|
|
F.setName(cleanUpName(F.getName()));
|
|
|
|
return true;
|
|
}
|
|
|
|
std::string NVPTXAssignValidGlobalNames::cleanUpName(StringRef Name) {
|
|
std::string ValidName;
|
|
raw_string_ostream ValidNameStream(ValidName);
|
|
for (unsigned I = 0, E = Name.size(); I != E; ++I) {
|
|
char C = Name[I];
|
|
if (C == '.' || C == '@') {
|
|
ValidNameStream << "_$_";
|
|
} else {
|
|
ValidNameStream << C;
|
|
}
|
|
}
|
|
|
|
return ValidNameStream.str();
|
|
}
|
|
|
|
ModulePass *llvm::createNVPTXAssignValidGlobalNamesPass() {
|
|
return new NVPTXAssignValidGlobalNames();
|
|
}
|