Remove outdated references to dominance frontiers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123724 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/Mem2Reg.cpp b/lib/Transforms/Utils/Mem2Reg.cpp
index ea2f8fc..f4ca81a 100644
--- a/lib/Transforms/Utils/Mem2Reg.cpp
+++ b/lib/Transforms/Utils/Mem2Reg.cpp
@@ -16,7 +16,7 @@
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/PromoteMemToReg.h"
#include "llvm/Transforms/Utils/UnifyFunctionExitNodes.h"
-#include "llvm/Analysis/DominanceFrontier.h"
+#include "llvm/Analysis/Dominators.h"
#include "llvm/Instructions.h"
#include "llvm/Function.h"
#include "llvm/ADT/Statistic.h"
@@ -36,8 +36,6 @@
//
virtual bool runOnFunction(Function &F);
- // getAnalysisUsage - We need dominance frontiers
- //
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<DominatorTree>();
AU.setPreservesCFG();
diff --git a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 82e565d..32f7782 100644
--- a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -35,7 +35,7 @@
#include "llvm/Metadata.h"
#include "llvm/Analysis/AliasSetTracker.h"
#include "llvm/Analysis/DebugInfo.h"
-#include "llvm/Analysis/DominanceFrontier.h"
+#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
@@ -44,6 +44,7 @@
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/CFG.h"
#include <algorithm>
+#include <map>
#include <queue>
using namespace llvm;
@@ -523,9 +524,8 @@
Instruction *A = Allocas[i];
// If there are any uses of the alloca instructions left, they must be in
- // sections of dead code that were not processed on the dominance frontier.
- // Just delete the users now.
- //
+ // unreachable basic blocks that were not processed by walking the dominator
+ // tree. Just delete the users now.
if (!A->use_empty())
A->replaceAllUsesWith(UndefValue::get(A->getType()));
if (AST) AST->deleteValue(A);
@@ -1102,9 +1102,9 @@
}
/// PromoteMemToReg - Promote the specified list of alloca instructions into
-/// scalar registers, inserting PHI nodes as appropriate. This function makes
-/// use of DominanceFrontier information. This function does not modify the CFG
-/// of the function at all. All allocas must be from the same function.
+/// scalar registers, inserting PHI nodes as appropriate. This function does
+/// not modify the CFG of the function at all. All allocas must be from the
+/// same function.
///
/// If AST is specified, the specified tracker is updated to reflect changes
/// made to the IR.