mirror of
https://github.com/c64scene-ar/llvm-6502.git
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into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
225 lines
6.3 KiB
C++
225 lines
6.3 KiB
C++
//===- DbgInfoPrinter.cpp - Print debug info in a human readable form ------==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a pass that prints instructions, and associated debug
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// info:
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//
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// - source/line/col information
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// - original variable name
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// - original type name
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/Passes.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/DebugInfo.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/CFG.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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static cl::opt<bool>
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PrintDirectory("print-fullpath",
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cl::desc("Print fullpath when printing debug info"),
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cl::Hidden);
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namespace {
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class PrintDbgInfo : public FunctionPass {
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raw_ostream &Out;
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void printVariableDeclaration(const Value *V);
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public:
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static char ID; // Pass identification
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PrintDbgInfo() : FunctionPass(ID), Out(errs()) {
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initializePrintDbgInfoPass(*PassRegistry::getPassRegistry());
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}
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virtual bool runOnFunction(Function &F);
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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};
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char PrintDbgInfo::ID = 0;
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}
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INITIALIZE_PASS(PrintDbgInfo, "print-dbginfo",
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"Print debug info in human readable form", false, false)
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FunctionPass *llvm::createDbgInfoPrinterPass() { return new PrintDbgInfo(); }
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/// Find the debug info descriptor corresponding to this global variable.
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static Value *findDbgGlobalDeclare(GlobalVariable *V) {
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const Module *M = V->getParent();
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NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.gv");
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if (!NMD)
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return 0;
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for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
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DIDescriptor DIG(cast<MDNode>(NMD->getOperand(i)));
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if (!DIG.isGlobalVariable())
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continue;
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if (DIGlobalVariable(DIG).getGlobal() == V)
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return DIG;
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}
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return 0;
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}
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/// Find the debug info descriptor corresponding to this function.
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static Value *findDbgSubprogramDeclare(Function *V) {
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const Module *M = V->getParent();
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NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.sp");
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if (!NMD)
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return 0;
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for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
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DIDescriptor DIG(cast<MDNode>(NMD->getOperand(i)));
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if (!DIG.isSubprogram())
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continue;
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if (DISubprogram(DIG).getFunction() == V)
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return DIG;
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}
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return 0;
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}
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/// Finds the llvm.dbg.declare intrinsic corresponding to this value if any.
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/// It looks through pointer casts too.
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static const DbgDeclareInst *findDbgDeclare(const Value *V) {
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V = V->stripPointerCasts();
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if (!isa<Instruction>(V) && !isa<Argument>(V))
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return 0;
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const Function *F = NULL;
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if (const Instruction *I = dyn_cast<Instruction>(V))
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F = I->getParent()->getParent();
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else if (const Argument *A = dyn_cast<Argument>(V))
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F = A->getParent();
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for (Function::const_iterator FI = F->begin(), FE = F->end(); FI != FE; ++FI)
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for (BasicBlock::const_iterator BI = (*FI).begin(), BE = (*FI).end();
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BI != BE; ++BI)
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if (const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
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if (DDI->getAddress() == V)
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return DDI;
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return 0;
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}
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static bool getLocationInfo(const Value *V, std::string &DisplayName,
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std::string &Type, unsigned &LineNo,
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std::string &File, std::string &Dir) {
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DICompileUnit Unit;
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DIType TypeD;
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(const_cast<Value*>(V))) {
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Value *DIGV = findDbgGlobalDeclare(GV);
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if (!DIGV) return false;
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DIGlobalVariable Var(cast<MDNode>(DIGV));
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StringRef D = Var.getDisplayName();
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if (!D.empty())
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DisplayName = D;
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LineNo = Var.getLineNumber();
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Unit = Var.getCompileUnit();
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TypeD = Var.getType();
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} else if (Function *F = dyn_cast<Function>(const_cast<Value*>(V))){
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Value *DIF = findDbgSubprogramDeclare(F);
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if (!DIF) return false;
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DISubprogram Var(cast<MDNode>(DIF));
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StringRef D = Var.getDisplayName();
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if (!D.empty())
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DisplayName = D;
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LineNo = Var.getLineNumber();
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Unit = Var.getCompileUnit();
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TypeD = Var.getType();
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} else {
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const DbgDeclareInst *DDI = findDbgDeclare(V);
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if (!DDI) return false;
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DIVariable Var(cast<MDNode>(DDI->getVariable()));
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StringRef D = Var.getName();
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if (!D.empty())
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DisplayName = D;
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LineNo = Var.getLineNumber();
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Unit = Var.getCompileUnit();
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TypeD = Var.getType();
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}
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StringRef T = TypeD.getName();
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if (!T.empty())
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Type = T;
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StringRef F = Unit.getFilename();
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if (!F.empty())
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File = F;
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StringRef D = Unit.getDirectory();
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if (!D.empty())
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Dir = D;
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return true;
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}
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void PrintDbgInfo::printVariableDeclaration(const Value *V) {
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std::string DisplayName, File, Directory, Type;
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unsigned LineNo = 0;
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if (!getLocationInfo(V, DisplayName, Type, LineNo, File, Directory))
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return;
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Out << "; ";
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WriteAsOperand(Out, V, false, 0);
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if (isa<Function>(V))
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Out << " is function " << DisplayName
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<< " of type " << Type << " declared at ";
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else
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Out << " is variable " << DisplayName
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<< " of type " << Type << " declared at ";
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if (PrintDirectory)
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Out << Directory << "/";
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Out << File << ":" << LineNo << "\n";
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}
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bool PrintDbgInfo::runOnFunction(Function &F) {
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if (F.isDeclaration())
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return false;
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Out << "function " << F.getName() << "\n\n";
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for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I) {
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BasicBlock *BB = I;
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if (I != F.begin() && (pred_begin(BB) == pred_end(BB)))
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// Skip dead blocks.
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continue;
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Out << BB->getName();
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Out << ":";
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Out << "\n";
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for (BasicBlock::const_iterator i = BB->begin(), e = BB->end();
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i != e; ++i) {
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printVariableDeclaration(i);
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if (const User *U = dyn_cast<User>(i)) {
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for(unsigned i=0;i<U->getNumOperands();i++)
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printVariableDeclaration(U->getOperand(i));
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}
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}
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}
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return false;
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}
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