implement PR8576, deleting dead stores with intervening may-alias stores.

[oota-llvm.git] / lib / Analysis / DbgInfoPrinter.cpp

diff --git a/lib/Analysis/DbgInfoPrinter.cpp b/lib/Analysis/DbgInfoPrinter.cpp
index d80d5811e0966f31ebb12ed1d135bdcc658464ee..a460777b0e639cea056e86c61972104ec9af1663 100644 (file)
--- a/lib/Analysis/DbgInfoPrinter.cpp
+++ b/lib/Analysis/DbgInfoPrinter.cpp
@@ -19,10 +19,10 @@
 #include "llvm/Pass.h"
 #include "llvm/Function.h"
 #include "llvm/IntrinsicInst.h"
+#include "llvm/Metadata.h"
 #include "llvm/Assembly/Writer.h"
 #include "llvm/Analysis/DebugInfo.h"
 #include "llvm/Analysis/Passes.h"
-#include "llvm/Analysis/ValueTracking.h"
 #include "llvm/Support/CFG.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/raw_ostream.h"
@@ -35,14 +35,14 @@ PrintDirectory("print-fullpath",
                cl::Hidden);
 
 namespace {
-  class VISIBILITY_HIDDEN PrintDbgInfo : public FunctionPass {
+  class PrintDbgInfo : public FunctionPass {
     raw_ostream &Out;
-    void printStopPoint(const DbgStopPointInst *DSI);
-    void printFuncStart(const DbgFuncStartInst *FS);
     void printVariableDeclaration(const Value *V);
   public:
     static char ID; // Pass identification
-    PrintDbgInfo() : FunctionPass(&ID), Out(outs()) {}
+    PrintDbgInfo() : FunctionPass(ID), Out(errs()) {
+      initializePrintDbgInfoPass(*PassRegistry::getPassRegistry());
+    }
 
     virtual bool runOnFunction(Function &F);
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
@@ -50,10 +50,11 @@ namespace {
     }
   };
   char PrintDbgInfo::ID = 0;
-  static RegisterPass<PrintDbgInfo> X("print-dbginfo",
-                                     "Print debug info in human readable form");
 }
 
+INITIALIZE_PASS(PrintDbgInfo, "print-dbginfo",
+                "Print debug info in human readable form", false, false)
+
 FunctionPass *llvm::createDbgInfoPrinterPass() { return new PrintDbgInfo(); }
 
 void PrintDbgInfo::printVariableDeclaration(const Value *V) {
@@ -74,30 +75,6 @@ void PrintDbgInfo::printVariableDeclaration(const Value *V) {
   Out << File << ":" << LineNo << "\n";
 }
 
-void PrintDbgInfo::printStopPoint(const DbgStopPointInst *DSI) {
-  if (PrintDirectory) {
-    std::string dir;
-    GetConstantStringInfo(DSI->getDirectory(), dir);
-    Out << dir << "/";
-  }
-
-  std::string file;
-  GetConstantStringInfo(DSI->getFileName(), file);
-  Out << file << ":" << DSI->getLine();
-
-  if (unsigned Col = DSI->getColumn())
-    Out << ":" << Col;
-}
-
-void PrintDbgInfo::printFuncStart(const DbgFuncStartInst *FS) {
-  DISubprogram Subprogram(cast<GlobalVariable>(FS->getSubprogram()));
-  std::string Res1, Res2;
-  Out << "; fully qualified function name: " << Subprogram.getDisplayName(Res1)
-      << " return type: " << Subprogram.getType().getName(Res2)
-      << " at line " << Subprogram.getLineNumber()
-      << "\n\n";
-}
-
 bool PrintDbgInfo::runOnFunction(Function &F) {
   if (F.isDeclaration())
     return false;
@@ -111,57 +88,21 @@ bool PrintDbgInfo::runOnFunction(Function &F) {
       // Skip dead blocks.
       continue;
 
-    const DbgStopPointInst *DSI = findBBStopPoint(BB);
     Out << BB->getName();
     Out << ":";
 
-    if (DSI) {
-      Out << "; (";
-      printStopPoint(DSI);
-      Out << ")";
-    }
-
     Out << "\n";
 
-    // A dbgstoppoint's information is valid until we encounter a new one.
-    const DbgStopPointInst *LastDSP = DSI;
-    bool Printed = DSI != 0;
     for (BasicBlock::const_iterator i = BB->begin(), e = BB->end();
          i != e; ++i) {
-      if (isa<DbgInfoIntrinsic>(i)) {
-        if ((DSI = dyn_cast<DbgStopPointInst>(i))) {
-          if (DSI->getContext() == LastDSP->getContext() &&
-              DSI->getLineValue() == LastDSP->getLineValue() &&
-              DSI->getColumnValue() == LastDSP->getColumnValue())
-            // Don't print same location twice.
-            continue;
-
-          LastDSP = cast<DbgStopPointInst>(i);
-
-          // Don't print consecutive stoppoints, use a flag to know which one we
-          // printed.
-          Printed = false;
-        } else if (const DbgFuncStartInst *FS = dyn_cast<DbgFuncStartInst>(i)) {
-          printFuncStart(FS);
-        }
-      } else {
-        if (!Printed && LastDSP) {
-          Out << "; ";
-          printStopPoint(LastDSP);
-          Out << "\n";
-          Printed = true;
-        }
 
-        Out << *i;
         printVariableDeclaration(i);
 
         if (const User *U = dyn_cast<User>(i)) {
           for(unsigned i=0;i<U->getNumOperands();i++)
             printVariableDeclaration(U->getOperand(i));
         }
-      }
     }
   }
-
   return false;
 }