Do not use separate utility to walk all instructions and remove dead dbg intrinsics. Let instcombiner do this job.

llvm-svn: 59659

1 files changed, 0 insertions, 60 deletions

diff --git a/llvm/lib/Transforms/Utils/DbgInfoUtils.cpp b/llvm/lib/Transforms/Utils/DbgInfoUtils.cpp
deleted file mode 100644
index 4bd116a6e56..00000000000
--- a/llvm/lib/Transforms/Utils/DbgInfoUtils.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-//===-- DbgInfoUtils.cpp - DbgInfo Utilities -------------------------------==//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Utility functions to manipulate debugging information.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Utils/DbgInfoUtils.h"
-#include "llvm/IntrinsicInst.h"
-
-using namespace llvm;
-
-/// RemoveDeadDbgIntrinsics - Remove dead dbg intrinsics from this 
-/// basic block.
-void llvm::RemoveDeadDbgIntrinsics(BasicBlock &BB) {
-  BasicBlock::iterator BI = BB.begin(), BE = BB.end();
-  if (BI == BE) return;
-
-  Instruction *Prev = BI; ++BI;
-  while (BI != BE) {
-    Instruction *Next = BI; ++BI;
-    DbgInfoIntrinsic *DBI_Prev = dyn_cast<DbgInfoIntrinsic>(Prev);
-    if (!DBI_Prev) {
-      Prev = Next;
-      continue;
-    }
-    
-    // If there are two consecutive llvm.dbg.stoppoint calls then
-    // it is likely that the optimizer deleted code in between these
-    // two intrinsics. 
-    DbgInfoIntrinsic *DBI_Next = dyn_cast<DbgInfoIntrinsic>(Next);
-    if (DBI_Next 
-        && DBI_Prev->getIntrinsicID() == llvm::Intrinsic::dbg_stoppoint
-        && DBI_Next->getIntrinsicID() == llvm::Intrinsic::dbg_stoppoint)
-      Prev->eraseFromParent();
-    
-    // If a llvm.dbg.stoppoint is placed just before an unconditional
-    // branch then remove the llvm.dbg.stoppoint intrinsic.
-    else if (BranchInst *UC = dyn_cast<BranchInst>(Next)) {
-      if (UC->isUnconditional() 
-          && DBI_Prev->getIntrinsicID() == llvm::Intrinsic::dbg_stoppoint)
-        Prev->eraseFromParent();
-    }
-
-    Prev = Next;
-  }
-}
-
-/// RemoveDeadDbgIntrinsics - Remove dead dbg intrinsics from this function.
-void llvm::RemoveDeadDbgIntrinsics(Function &F) {
-  for (Function::iterator FI = F.begin(), FE = F.end();
-       FI != FE; ++FI) 
-    RemoveDeadDbgIntrinsics(*FI);
-}