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Use std::bitset for SubtargetFeatures

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Previously, subtarget features were a bitfield with the underlying type being uint64_t. 
Since several targets (X86 and ARM, in particular) have hit or were very close to hitting this bound, switching the features to use a bitset.

No functional change.

Differential Revision: http://reviews.llvm.org/D7065

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229831 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Kuperstein
2015-02-19 09:01:04 +00:00
parent d6f86b8614
commit 23dd089d8f
33 changed files with 356 additions and 328 deletions
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utils/TableGen/InstrInfoEmitter.cpp
+4 -4
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@@ -547,15 +547,15 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
CodeGenTarget &Target = CDP.getTargetInfo();
if (Inst.HasComplexDeprecationPredicate)
// Emit a function pointer to the complex predicate method.
OS << ",0"
OS << ", { } "
<< ",&get" << Inst.DeprecatedReason << "DeprecationInfo";
else if (!Inst.DeprecatedReason.empty())
// Emit the Subtarget feature.
OS << "," << Target.getInstNamespace() << "::" << Inst.DeprecatedReason
<< ",nullptr";
OS << ", { " << Target.getInstNamespace() << "::" << Inst.DeprecatedReason
<< "} ,nullptr";
else
// Instruction isn't deprecated.
OS << ",0,nullptr";
OS << ", { } ,nullptr";
OS << " }, // Inst #" << Num << " = " << Inst.TheDef->getName() << "\n";
}