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-rw-r--r--llvm/include/llvm/Analysis/BranchProbabilityInfo.h4
-rw-r--r--llvm/lib/Analysis/BranchProbabilityInfo.cpp10
2 files changed, 14 insertions, 0 deletions
diff --git a/llvm/include/llvm/Analysis/BranchProbabilityInfo.h b/llvm/include/llvm/Analysis/BranchProbabilityInfo.h
index 4ff7121728e..fdad168ab1e 100644
--- a/llvm/include/llvm/Analysis/BranchProbabilityInfo.h
+++ b/llvm/include/llvm/Analysis/BranchProbabilityInfo.h
@@ -16,6 +16,7 @@
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/Support/CFG.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/BranchProbability.h"
@@ -98,6 +99,9 @@ public:
/// It is guaranteed to fall between 1 and UINT32_MAX.
uint32_t getEdgeWeight(const BasicBlock *Src, const BasicBlock *Dst) const;
+ uint32_t getEdgeWeight(const BasicBlock *Src,
+ succ_const_iterator Dst) const;
+
/// \brief Set the raw edge weight for a given edge.
///
/// This allows a pass to explicitly set the edge weight for an edge. It can
diff --git a/llvm/lib/Analysis/BranchProbabilityInfo.cpp b/llvm/lib/Analysis/BranchProbabilityInfo.cpp
index 86560ca33d0..15491f072cc 100644
--- a/llvm/lib/Analysis/BranchProbabilityInfo.cpp
+++ b/llvm/lib/Analysis/BranchProbabilityInfo.cpp
@@ -11,6 +11,7 @@
//
//===----------------------------------------------------------------------===//
+#define DEBUG_TYPE "branch-prob"
#include "llvm/Analysis/BranchProbabilityInfo.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/Analysis/LoopInfo.h"
@@ -483,6 +484,8 @@ void BranchProbabilityInfo::getAnalysisUsage(AnalysisUsage &AU) const {
}
bool BranchProbabilityInfo::runOnFunction(Function &F) {
+ DEBUG(dbgs() << "---- Branch Probability Info : " << F.getName()
+ << " ----\n\n");
LastF = &F; // Store the last function we ran on for printing.
LI = &getAnalysis<LoopInfo>();
assert(PostDominatedByUnreachable.empty());
@@ -591,6 +594,13 @@ getEdgeWeight(const BasicBlock *Src, unsigned IndexInSuccessors) const {
return DEFAULT_WEIGHT;
}
+uint32_t
+BranchProbabilityInfo::
+getEdgeWeight(const BasicBlock *Src, succ_const_iterator Dst) const {
+ size_t index = std::distance(succ_begin(Src), Dst);
+ return getEdgeWeight(Src, index);
+}
+
/// Get the raw edge weight calculated for the block pair. This returns the sum
/// of all raw edge weights from Src to Dst.
uint32_t BranchProbabilityInfo::
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