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[MCA] Improved debug prints. NFC

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llvm-svn: 353852
This commit is contained in:
Andrea Di Biagio 2019-02-12 16:18:57 +00:00
parent db8d82f38b
commit acb3fbc2c0
3 changed files with 25 additions and 18 deletions
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19
include/llvm/MCA/Support.h
View File

@ -60,24 +60,13 @@ public:
return (Denominator == 1) ? Numerator : (double)Numerator / Denominator;
}
unsigned getNumerator() const { return Numerator; }
unsigned getDenominator() const { return Denominator; }
// Add the components of RHS to this instance. Instead of calculating
// the final value here, we keep track of the numerator and denominator
// separately, to reduce floating point error.
ResourceCycles &operator+=(const ResourceCycles &RHS) {
if (Denominator == RHS.Denominator)
Numerator += RHS.Numerator;
else {
// Create a common denominator for LHS and RHS by calculating the least
// common multiple from the GCD.
unsigned GCD = GreatestCommonDivisor64(Denominator, RHS.Denominator);
unsigned LCM = (Denominator * RHS.Denominator) / GCD;
unsigned LHSNumerator = Numerator * (LCM / Denominator);
unsigned RHSNumerator = RHS.Numerator * (LCM / RHS.Denominator);
Numerator = LHSNumerator + RHSNumerator;
Denominator = LCM;
}
return *this;
}
ResourceCycles &operator+=(const ResourceCycles &RHS);
};
/// Populates vector Masks with processor resource masks.

3
lib/MCA/Stages/ExecuteStage.cpp
View File

@ -188,9 +188,10 @@ void ExecuteStage::notifyInstructionIssued(
LLVM_DEBUG({
dbgs() << "[E] Instruction Issued: #" << IR << '\n';
for (const std::pair<ResourceRef, ResourceCycles> &Resource : Used) {
assert(Resource.second.getDenominator() == 1 && "Invalid cycles!");
dbgs() << "[E] Resource Used: [" << Resource.first.first << '.'
<< Resource.first.second << "], ";
dbgs() << "cycles: " << Resource.second << '\n';
dbgs() << "cycles: " << Resource.second.getNumerator() << '\n';
}
});

21
lib/MCA/Support.cpp
View File

@ -20,6 +20,22 @@ namespace mca {
#define DEBUG_TYPE "llvm-mca"
ResourceCycles &ResourceCycles::operator+=(const ResourceCycles &RHS) {
if (Denominator == RHS.Denominator)
Numerator += RHS.Numerator;
else {
// Create a common denominator for LHS and RHS by calculating the least
// common multiple from the GCD.
unsigned GCD = GreatestCommonDivisor64(Denominator, RHS.Denominator);
unsigned LCM = (Denominator * RHS.Denominator) / GCD;
unsigned LHSNumerator = Numerator * (LCM / Denominator);
unsigned RHSNumerator = RHS.Numerator * (LCM / RHS.Denominator);
Numerator = LHSNumerator + RHSNumerator;
Denominator = LCM;
}
return *this;
}
void computeProcResourceMasks(const MCSchedModel &SM,
MutableArrayRef<uint64_t> Masks) {
unsigned ProcResourceID = 0;
@ -56,8 +72,9 @@ void computeProcResourceMasks(const MCSchedModel &SM,
<< "\n");
for (unsigned I = 0, E = SM.getNumProcResourceKinds(); I < E; ++I) {
const MCProcResourceDesc &Desc = *SM.getProcResource(I);
LLVM_DEBUG(dbgs() << '[' << I << "] " << Desc.Name << " - " << Masks[I]
<< '\n');
LLVM_DEBUG(dbgs() << '[' << format_decimal(I,2) << "] " << " - "
<< format_hex(Masks[I],16) << " - "
<< Desc.Name << '\n');
}
#endif
}