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Improve tablegen gen-subtarget diagnostics for missing machine models.

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-debug-only=subtarget-emitter prints a lot of machine model diagnostics.
This prunes the output so that the "No machine model for XXX on processor YYY"
only appears when there is definitely no machine model for that opcode.
Previously it was printing that error even if the opcode was covered by
a more general scheduling class.

<rdar://problem/15919845> [TableGen][CodeGenSchedule] Debug output does not help spotting the missing scheduling classes

llvm-svn: 284452
This commit is contained in:
Andrew Trick 2016-10-18 04:17:44 +00:00
parent a71d800155
commit ca38d0b9a2
1 changed files with 8 additions and 5 deletions
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13
utils/TableGen/CodeGenSchedule.cpp
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@ -573,11 +573,14 @@ void CodeGenSchedModels::collectSchedClasses() {
dbgs() << " " << SchedReads[*RI].Name;
dbgs() << '\n';
}
for (std::vector<CodeGenProcModel>::iterator PI = ProcModels.begin(),
PE = ProcModels.end(); PI != PE; ++PI) {
if (!std::count(ProcIndices.begin(), ProcIndices.end(), PI->Index))
dbgs() << "No machine model for " << Inst->TheDef->getName()
<< " on processor " << PI->ModelName << '\n';
// If ProcIndices contains zero, the class applies to all processors.
if (!std::count(ProcIndices.begin(), ProcIndices.end(), 0)) {
for (std::vector<CodeGenProcModel>::iterator PI = ProcModels.begin(),
PE = ProcModels.end(); PI != PE; ++PI) {
if (!std::count(ProcIndices.begin(), ProcIndices.end(), PI->Index))
dbgs() << "No machine model for " << Inst->TheDef->getName()
<< " on processor " << PI->ModelName << '\n';
}
}
}
}