Re-Revert r257105 (Verifier debug info changes)

[oota-llvm.git] / lib / CodeGen / StackColoring.cpp

diff --git a/lib/CodeGen/StackColoring.cpp b/lib/CodeGen/StackColoring.cpp
index 29ba526bc67cfd2a86c6a8bbc34fb93e8ce194bc..7b5203815172b2dd4b66e721d22b894953d4e5dc 100644 (file)
--- a/lib/CodeGen/StackColoring.cpp
+++ b/lib/CodeGen/StackColoring.cpp
@@ -21,6 +21,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/CodeGen/Passes.h"
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/PostOrderIterator.h"
@@ -39,7 +40,6 @@
 #include "llvm/CodeGen/MachineMemOperand.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/PseudoSourceValue.h"
 #include "llvm/CodeGen/SlotIndexes.h"
 #include "llvm/CodeGen/StackProtector.h"
@@ -48,7 +48,6 @@
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
-#include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
@@ -496,21 +495,10 @@ void StackColoring::remapInstructions(DenseMap<int, int> &SlotRemap) {
     // upcoming replacement.
     SP->adjustForColoring(From, To);
 
-    // The new alloca might not be valid in a llvm.dbg.declare for this
-    // variable, so undef out the use to make the verifier happy.
-    AllocaInst *FromAI = const_cast<AllocaInst *>(From);
-    if (FromAI->isUsedByMetadata())
-      ValueAsMetadata::handleRAUW(FromAI, UndefValue::get(FromAI->getType()));
-    for (auto &Use : FromAI->uses()) {
-      if (BitCastInst *BCI = dyn_cast<BitCastInst>(Use.get()))
-        if (BCI->isUsedByMetadata())
-          ValueAsMetadata::handleRAUW(BCI, UndefValue::get(BCI->getType()));
-    }
-
     // Note that this will not replace uses in MMOs (which we'll update below),
     // or anywhere else (which is why we won't delete the original
     // instruction).
-    FromAI->replaceAllUsesWith(Inst);
+    const_cast<AllocaInst *>(From)->replaceAllUsesWith(Inst);
   }
 
   // Remap all instructions to the new stack slots.