diff options
| -rw-r--r-- | lib/CodeGen/EarlyIfConversion.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/CodeGen/EarlyIfConversion.cpp b/lib/CodeGen/EarlyIfConversion.cpp index b533387dfe..f9347efdb0 100644 --- a/lib/CodeGen/EarlyIfConversion.cpp +++ b/lib/CodeGen/EarlyIfConversion.cpp @@ -24,6 +24,7 @@ #include "llvm/ADT/SetVector.h" #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/SparseSet.h" +#include "llvm/ADT/Statistic.h" #include "llvm/CodeGen/MachineBranchProbabilityInfo.h" #include "llvm/CodeGen/MachineDominators.h" #include "llvm/CodeGen/MachineFunction.h" @@ -50,6 +51,11 @@ BlockInstrLimit("early-ifcvt-limit", cl::init(30), cl::Hidden, static cl::opt<bool> Stress("stress-early-ifcvt", cl::Hidden, cl::desc("Turn all knobs to 11")); +STATISTIC(NumDiamondsSeen, "Number of diamonds"); +STATISTIC(NumDiamondsConv, "Number of diamonds converted"); +STATISTIC(NumTrianglesSeen, "Number of triangles"); +STATISTIC(NumTrianglesConv, "Number of triangles converted"); + //===----------------------------------------------------------------------===// // SSAIfConv //===----------------------------------------------------------------------===// @@ -434,6 +440,10 @@ bool SSAIfConv::canConvertIf(MachineBasicBlock *MBB) { if (!findInsertionPoint()) return false; + if (isTriangle()) + ++NumTrianglesSeen; + else + ++NumDiamondsSeen; return true; } @@ -499,6 +509,12 @@ void SSAIfConv::rewritePHIOperands() { void SSAIfConv::convertIf(SmallVectorImpl<MachineBasicBlock*> &RemovedBlocks) { assert(Head && Tail && TBB && FBB && "Call canConvertIf first."); + // Update statistics. + if (isTriangle()) + ++NumTrianglesConv; + else + ++NumDiamondsConv; + // Move all instructions into Head, except for the terminators. if (TBB != Tail) Head->splice(InsertionPoint, TBB, TBB->begin(), TBB->getFirstTerminator()); |