Vendor import of llvm trunk r130700:

http://llvm.org/svn/llvm-project/llvm/trunk@130700

1 files changed, 16 insertions, 33 deletions

diff --git a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 7788857..50c9ae2 100644
--- a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -38,6 +38,7 @@
 #include "llvm/Analysis/DIBuilder.h"
 #include "llvm/Analysis/Dominators.h"
 #include "llvm/Analysis/InstructionSimplify.h"
+#include "llvm/Transforms/Utils/Local.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
@@ -45,7 +46,6 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/CFG.h"
 #include <algorithm>
-#include <map>
 #include <queue>
 using namespace llvm;
 
@@ -103,7 +103,7 @@ bool llvm::isAllocaPromotable(const AllocaInst *AI) {
 /// FindAllocaDbgDeclare - Finds the llvm.dbg.declare intrinsic describing the
 /// alloca 'V', if any.
 static DbgDeclareInst *FindAllocaDbgDeclare(Value *V) {
-  if (MDNode *DebugNode = MDNode::getIfExists(V->getContext(), &V, 1))
+  if (MDNode *DebugNode = MDNode::getIfExists(V->getContext(), V))
     for (Value::use_iterator UI = DebugNode->use_begin(),
          E = DebugNode->use_end(); UI != E; ++UI)
       if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(*UI))
@@ -273,8 +273,6 @@ namespace {
                                   LargeBlockInfo &LBI);
     void PromoteSingleBlockAlloca(AllocaInst *AI, AllocaInfo &Info,
                                   LargeBlockInfo &LBI);
-    void ConvertDebugDeclareToDebugValue(DbgDeclareInst *DDI, StoreInst *SI);
-
     
     void RenamePass(BasicBlock *BB, BasicBlock *Pred,
                     RenamePassData::ValVector &IncVals,
@@ -391,7 +389,9 @@ void PromoteMem2Reg::run() {
       if (Info.UsingBlocks.empty()) {
         // Record debuginfo for the store and remove the declaration's debuginfo.
         if (DbgDeclareInst *DDI = Info.DbgDeclare) {
-          ConvertDebugDeclareToDebugValue(DDI, Info.OnlyStore);
+          if (!DIB)
+            DIB = new DIBuilder(*DDI->getParent()->getParent()->getParent());
+          ConvertDebugDeclareToDebugValue(DDI, Info.OnlyStore, *DIB);
           DDI->eraseFromParent();
         }
         // Remove the (now dead) store and alloca.
@@ -423,8 +423,11 @@ void PromoteMem2Reg::run() {
         while (!AI->use_empty()) {
           StoreInst *SI = cast<StoreInst>(AI->use_back());
           // Record debuginfo for the store before removing it.
-          if (DbgDeclareInst *DDI = Info.DbgDeclare)
-            ConvertDebugDeclareToDebugValue(DDI, SI);
+          if (DbgDeclareInst *DDI = Info.DbgDeclare) {
+            if (!DIB)
+              DIB = new DIBuilder(*SI->getParent()->getParent()->getParent());
+            ConvertDebugDeclareToDebugValue(DDI, SI, *DIB);
+          }
           SI->eraseFromParent();
           LBI.deleteValue(SI);
         }
@@ -944,28 +947,6 @@ void PromoteMem2Reg::PromoteSingleBlockAlloca(AllocaInst *AI, AllocaInfo &Info,
   }
 }
 
-// Inserts a llvm.dbg.value instrinsic before the stores to an alloca'd value
-// that has an associated llvm.dbg.decl intrinsic.
-void PromoteMem2Reg::ConvertDebugDeclareToDebugValue(DbgDeclareInst *DDI,
-                                                     StoreInst *SI) {
-  DIVariable DIVar(DDI->getVariable());
-  if (!DIVar.Verify())
-    return;
-
-  if (!DIB)
-    DIB = new DIBuilder(*SI->getParent()->getParent()->getParent());
-  Instruction *DbgVal = DIB->insertDbgValueIntrinsic(SI->getOperand(0), 0,
-                                                     DIVar, SI);
-  
-  // Propagate any debug metadata from the store onto the dbg.value.
-  DebugLoc SIDL = SI->getDebugLoc();
-  if (!SIDL.isUnknown())
-    DbgVal->setDebugLoc(SIDL);
-  // Otherwise propagate debug metadata from dbg.declare.
-  else
-    DbgVal->setDebugLoc(DDI->getDebugLoc());
-}
-
 // QueuePhiNode - queues a phi-node to be added to a basic-block for a specific
 // Alloca returns true if there wasn't already a phi-node for that variable
 //
@@ -979,12 +960,11 @@ bool PromoteMem2Reg::QueuePhiNode(BasicBlock *BB, unsigned AllocaNo,
 
   // Create a PhiNode using the dereferenced type... and add the phi-node to the
   // BasicBlock.
-  PN = PHINode::Create(Allocas[AllocaNo]->getAllocatedType(),
+  PN = PHINode::Create(Allocas[AllocaNo]->getAllocatedType(), getNumPreds(BB),
                        Allocas[AllocaNo]->getName() + "." + Twine(Version++), 
                        BB->begin());
   ++NumPHIInsert;
   PhiToAllocaMap[PN] = AllocaNo;
-  PN->reserveOperandSpace(getNumPreds(BB));
 
   if (AST && PN->getType()->isPointerTy())
     AST->copyValue(PointerAllocaValues[AllocaNo], PN);
@@ -1076,8 +1056,11 @@ NextIteration:
       // what value were we writing?
       IncomingVals[ai->second] = SI->getOperand(0);
       // Record debuginfo for the store before removing it.
-      if (DbgDeclareInst *DDI = AllocaDbgDeclares[ai->second])
-        ConvertDebugDeclareToDebugValue(DDI, SI);
+      if (DbgDeclareInst *DDI = AllocaDbgDeclares[ai->second]) {
+        if (!DIB)
+          DIB = new DIBuilder(*SI->getParent()->getParent()->getParent());
+        ConvertDebugDeclareToDebugValue(DDI, SI, *DIB);
+      }
       BB->getInstList().erase(SI);
     }
   }