LLVM: lib/Analysis/IndirectCallPromotionAnalysis.cpp Source File (original) (raw)
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21using namespace llvm;
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23#define DEBUG_TYPE "pgo-icall-prom-analysis"
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29 cl::desc("The percentage threshold against remaining unpromoted indirect "
30 "call count for the promotion"));
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37 cl::desc("The percentage threshold against total "
38 "count for the promotion"));
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44 cl::desc("Max number of promotions for a single indirect "
45 "call callsite"));
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49 cl::desc("Max number of vtables annotated for a vtable load instruction."));
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51bool ICallPromotionAnalysis::isPromotionProfitable(uint64_t Count,
56}
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61uint32_t ICallPromotionAnalysis::getProfitablePromotionCandidates(
64 << " Num_targets: " << ValueDataArray.size() << "\n");
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67 uint64_t RemainingCount = TotalCount;
69 uint64_t Count = ValueDataArray[I].Count;
70 assert(Count <= RemainingCount);
71 LLVM_DEBUG(dbgs() << " Candidate " << I << " Count=" << Count
72 << " Target_func: " << ValueDataArray[I].Value << "\n");
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74 if (!isPromotionProfitable(Count, TotalCount, RemainingCount)) {
76 return I;
77 }
78 RemainingCount -= Count;
79 }
80 return I;
81}
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88 if (ValueDataArray.empty()) {
89 NumCandidates = 0;
91 }
92 NumCandidates = getProfitablePromotionCandidates(I, TotalCount);
93 return ValueDataArray;
94}
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
LLVM Value Representation.
initializer< Ty > init(const Ty &Val)
This is an optimization pass for GlobalISel generic memory operations.
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
SmallVector< InstrProfValueData, 4 > getValueProfDataFromInst(const Instruction &Inst, InstrProfValueKind ValueKind, uint32_t MaxNumValueData, uint64_t &TotalC, bool GetNoICPValue=false)
Extract the value profile data from Inst and returns them if Inst is annotated with value profile dat...