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Add rather verbose stats for fast-isel failures.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146186 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2011-12-08 21:37:10 +00:00
parent a62d11ea94
commit 73e08d3507
1 changed files with 153 additions and 0 deletions
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153
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -61,6 +61,77 @@ STATISTIC(NumFastIselBlocks, "Number of blocks selected entirely by fast isel");
STATISTIC(NumDAGBlocks, "Number of blocks selected using DAG");
STATISTIC(NumDAGIselRetries,"Number of times dag isel has to try another path");
#ifndef NDEBUG
// Terminators
STATISTIC(NumFastIselFailRet,"Fast isel fails on Ret");
STATISTIC(NumFastIselFailBr,"Fast isel fails on Br");
STATISTIC(NumFastIselFailSwitch,"Fast isel fails on Switch");
STATISTIC(NumFastIselFailIndirectBr,"Fast isel fails on IndirectBr");
STATISTIC(NumFastIselFailInvoke,"Fast isel fails on Invoke");
STATISTIC(NumFastIselFailResume,"Fast isel fails on Resume");
STATISTIC(NumFastIselFailUnwind,"Fast isel fails on Unwind");
STATISTIC(NumFastIselFailUnreachable,"Fast isel fails on Unreachable");
// Standard binary operators...
STATISTIC(NumFastIselFailAdd,"Fast isel fails on Add");
STATISTIC(NumFastIselFailFAdd,"Fast isel fails on FAdd");
STATISTIC(NumFastIselFailSub,"Fast isel fails on Sub");
STATISTIC(NumFastIselFailFSub,"Fast isel fails on FSub");
STATISTIC(NumFastIselFailMul,"Fast isel fails on Mul");
STATISTIC(NumFastIselFailFMul,"Fast isel fails on FMul");
STATISTIC(NumFastIselFailUDiv,"Fast isel fails on UDiv");
STATISTIC(NumFastIselFailSDiv,"Fast isel fails on SDiv");
STATISTIC(NumFastIselFailFDiv,"Fast isel fails on FDiv");
STATISTIC(NumFastIselFailURem,"Fast isel fails on URem");
STATISTIC(NumFastIselFailSRem,"Fast isel fails on SRem");
STATISTIC(NumFastIselFailFRem,"Fast isel fails on FRem");
// Logical operators...
STATISTIC(NumFastIselFailAnd,"Fast isel fails on And");
STATISTIC(NumFastIselFailOr,"Fast isel fails on Or");
STATISTIC(NumFastIselFailXor,"Fast isel fails on Xor");
// Memory instructions...
STATISTIC(NumFastIselFailAlloca,"Fast isel fails on Alloca");
STATISTIC(NumFastIselFailLoad,"Fast isel fails on Load");
STATISTIC(NumFastIselFailStore,"Fast isel fails on Store");
STATISTIC(NumFastIselFailAtomicCmpXchg,"Fast isel fails on AtomicCmpXchg");
STATISTIC(NumFastIselFailAtomicRMW,"Fast isel fails on AtomicRWM");
STATISTIC(NumFastIselFailFence,"Fast isel fails on Frence");
STATISTIC(NumFastIselFailGetElementPtr,"Fast isel fails on GetElementPtr");
// Convert instructions...
STATISTIC(NumFastIselFailTrunc,"Fast isel fails on Trunc");
STATISTIC(NumFastIselFailZExt,"Fast isel fails on ZExt");
STATISTIC(NumFastIselFailSExt,"Fast isel fails on SExt");
STATISTIC(NumFastIselFailFPTrunc,"Fast isel fails on FPTrunc");
STATISTIC(NumFastIselFailFPExt,"Fast isel fails on FPExt");
STATISTIC(NumFastIselFailFPToUI,"Fast isel fails on FPToUI");
STATISTIC(NumFastIselFailFPToSI,"Fast isel fails on FPToSI");
STATISTIC(NumFastIselFailUIToFP,"Fast isel fails on UIToFP");
STATISTIC(NumFastIselFailSIToFP,"Fast isel fails on SIToFP");
STATISTIC(NumFastIselFailIntToPtr,"Fast isel fails on IntToPtr");
STATISTIC(NumFastIselFailPtrToInt,"Fast isel fails on PtrToInt");
STATISTIC(NumFastIselFailBitCast,"Fast isel fails on BitCast");
// Other instructions...
STATISTIC(NumFastIselFailICmp,"Fast isel fails on ICmp");
STATISTIC(NumFastIselFailFCmp,"Fast isel fails on FCmp");
STATISTIC(NumFastIselFailPHI,"Fast isel fails on PHI");
STATISTIC(NumFastIselFailSelect,"Fast isel fails on Select");
STATISTIC(NumFastIselFailCall,"Fast isel fails on Call");
STATISTIC(NumFastIselFailShl,"Fast isel fails on Shl");
STATISTIC(NumFastIselFailLShr,"Fast isel fails on LShr");
STATISTIC(NumFastIselFailAShr,"Fast isel fails on AShr");
STATISTIC(NumFastIselFailVAArg,"Fast isel fails on VAArg");
STATISTIC(NumFastIselFailExtractElement,"Fast isel fails on ExtractElement");
STATISTIC(NumFastIselFailInsertElement,"Fast isel fails on InsertElement");
STATISTIC(NumFastIselFailShuffleVector,"Fast isel fails on ShuffleVector");
STATISTIC(NumFastIselFailExtractValue,"Fast isel fails on ExtractValue");
STATISTIC(NumFastIselFailInsertValue,"Fast isel fails on InsertValue");
STATISTIC(NumFastIselFailLandingPad,"Fast isel fails on LandingPad");
#endif
static cl::opt<bool>
EnableFastISelVerbose("fast-isel-verbose", cl::Hidden,
cl::desc("Enable verbose messages in the \"fast\" "
@ -821,6 +892,84 @@ static bool isFoldedOrDeadInstruction(const Instruction *I,
!FuncInfo->isExportedInst(I); // Exported instrs must be computed.
}
#ifndef NDEBUG
static void collectFailStats(const Instruction *I) {
switch (I->getOpcode()) {
default: assert (0 && "<Invalid operator> ");
// Terminators
case Instruction::Ret: NumFastIselFailRet++; return;
case Instruction::Br: NumFastIselFailBr++; return;
case Instruction::Switch: NumFastIselFailSwitch++; return;
case Instruction::IndirectBr: NumFastIselFailIndirectBr++; return;
case Instruction::Invoke: NumFastIselFailInvoke++; return;
case Instruction::Resume: NumFastIselFailResume++; return;
case Instruction::Unwind: NumFastIselFailUnwind++; return;
case Instruction::Unreachable: NumFastIselFailUnreachable++; return;
// Standard binary operators...
case Instruction::Add: NumFastIselFailAdd++; return;
case Instruction::FAdd: NumFastIselFailFAdd++; return;
case Instruction::Sub: NumFastIselFailSub++; return;
case Instruction::FSub: NumFastIselFailFSub++; return;
case Instruction::Mul: NumFastIselFailMul++; return;
case Instruction::FMul: NumFastIselFailFMul++; return;
case Instruction::UDiv: NumFastIselFailUDiv++; return;
case Instruction::SDiv: NumFastIselFailSDiv++; return;
case Instruction::FDiv: NumFastIselFailFDiv++; return;
case Instruction::URem: NumFastIselFailURem++; return;
case Instruction::SRem: NumFastIselFailSRem++; return;
case Instruction::FRem: NumFastIselFailFRem++; return;
// Logical operators...
case Instruction::And: NumFastIselFailAnd++; return;
case Instruction::Or: NumFastIselFailOr++; return;
case Instruction::Xor: NumFastIselFailXor++; return;
// Memory instructions...
case Instruction::Alloca: NumFastIselFailAlloca++; return;
case Instruction::Load: NumFastIselFailLoad++; return;
case Instruction::Store: NumFastIselFailStore++; return;
case Instruction::AtomicCmpXchg: NumFastIselFailAtomicCmpXchg++; return;
case Instruction::AtomicRMW: NumFastIselFailAtomicRMW++; return;
case Instruction::Fence: NumFastIselFailFence++; return;
case Instruction::GetElementPtr: NumFastIselFailGetElementPtr++; return;
// Convert instructions...
case Instruction::Trunc: NumFastIselFailTrunc++; return;
case Instruction::ZExt: NumFastIselFailZExt++; return;
case Instruction::SExt: NumFastIselFailSExt++; return;
case Instruction::FPTrunc: NumFastIselFailFPTrunc++; return;
case Instruction::FPExt: NumFastIselFailFPExt++; return;
case Instruction::FPToUI: NumFastIselFailFPToUI++; return;
case Instruction::FPToSI: NumFastIselFailFPToSI++; return;
case Instruction::UIToFP: NumFastIselFailUIToFP++; return;
case Instruction::SIToFP: NumFastIselFailSIToFP++; return;
case Instruction::IntToPtr: NumFastIselFailIntToPtr++; return;
case Instruction::PtrToInt: NumFastIselFailPtrToInt++; return;
case Instruction::BitCast: NumFastIselFailBitCast++; return;
// Other instructions...
case Instruction::ICmp: NumFastIselFailICmp++; return;
case Instruction::FCmp: NumFastIselFailFCmp++; return;
case Instruction::PHI: NumFastIselFailPHI++; return;
case Instruction::Select: NumFastIselFailSelect++; return;
case Instruction::Call: NumFastIselFailCall++; return;
case Instruction::Shl: NumFastIselFailShl++; return;
case Instruction::LShr: NumFastIselFailLShr++; return;
case Instruction::AShr: NumFastIselFailAShr++; return;
case Instruction::VAArg: NumFastIselFailVAArg++; return;
case Instruction::ExtractElement: NumFastIselFailExtractElement++; return;
case Instruction::InsertElement: NumFastIselFailInsertElement++; return;
case Instruction::ShuffleVector: NumFastIselFailShuffleVector++; return;
case Instruction::ExtractValue: NumFastIselFailExtractValue++; return;
case Instruction::InsertValue: NumFastIselFailInsertValue++; return;
case Instruction::LandingPad: NumFastIselFailLandingPad++; return;
}
return;
}
#endif
void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) {
// Initialize the Fast-ISel state, if needed.
FastISel *FastIS = 0;
@ -932,6 +1081,10 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) {
continue;
}
#ifndef NDEBUG
collectFailStats(Inst);
#endif
// Then handle certain instructions as single-LLVM-Instruction blocks.
if (isa<CallInst>(Inst)) {