[PM] Port BreakCriticalEdges to the new PM.
Differential Revision: https://reviews.llvm.org/D22688
llvm-svn: 276449
diff --git a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
index 49b646a..175cbd2 100644
--- a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
+++ b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
@@ -15,7 +15,7 @@
//
//===----------------------------------------------------------------------===//
-#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Utils/BreakCriticalEdges.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AliasAnalysis.h"
@@ -23,10 +23,10 @@
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Dominators.h"
-#include "llvm/IR/Function.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
using namespace llvm;
@@ -72,6 +72,20 @@
return new BreakCriticalEdges();
}
+PreservedAnalyses BreakCriticalEdgesPass::run(Function &F,
+ FunctionAnalysisManager &AM) {
+ auto *DT = AM.getCachedResult<DominatorTreeAnalysis>(F);
+ auto *LI = AM.getCachedResult<LoopAnalysis>(F);
+ unsigned N = SplitAllCriticalEdges(F, CriticalEdgeSplittingOptions(DT, LI));
+ NumBroken += N;
+ if (N == 0)
+ return PreservedAnalyses::all();
+ PreservedAnalyses PA;
+ PA.preserve<DominatorTreeAnalysis>();
+ PA.preserve<LoopAnalysis>();
+ return PA;
+}
+
//===----------------------------------------------------------------------===//
// Implementation of the external critical edge manipulation functions
//===----------------------------------------------------------------------===//