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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-02-19 09:01:04 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-02-19 09:01:04 +0000 |
| commit | ba5b04c798b9cf30420f75128737a97b265d1e50 (patch) | |
| tree | 3d0b7c38f118af48f0f0902812f845e577f95f35 /llvm/utils/TableGen/FixedLenDecoderEmitter.cpp | |
| parent | 36f974d76babc13a3e1de7b54965583878d5f272 (diff) | |
| download | bcm5719-llvm-ba5b04c798b9cf30420f75128737a97b265d1e50.tar.gz bcm5719-llvm-ba5b04c798b9cf30420f75128737a97b265d1e50.zip | |
Use std::bitset for SubtargetFeatures
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
llvm-svn: 229831
Diffstat (limited to 'llvm/utils/TableGen/FixedLenDecoderEmitter.cpp')
| -rw-r--r-- | llvm/utils/TableGen/FixedLenDecoderEmitter.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp b/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp index 292a2b17c5b..7ab466240b9 100644 --- a/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp +++ b/llvm/utils/TableGen/FixedLenDecoderEmitter.cpp @@ -848,7 +848,7 @@ emitPredicateFunction(formatted_raw_ostream &OS, PredicateSet &Predicates, // The predicate function is just a big switch statement based on the // input predicate index. OS.indent(Indentation) << "static bool checkDecoderPredicate(unsigned Idx, " - << "uint64_t Bits) {\n"; + << "const FeatureBitset& Bits) {\n"; Indentation += 2; if (!Predicates.empty()) { OS.indent(Indentation) << "switch (Idx) {\n"; @@ -1102,10 +1102,10 @@ unsigned FilterChooser::getDecoderIndex(DecoderSet &Decoders, static void emitSinglePredicateMatch(raw_ostream &o, StringRef str, const std::string &PredicateNamespace) { if (str[0] == '!') - o << "!(Bits & " << PredicateNamespace << "::" - << str.slice(1,str.size()) << ")"; + o << "!Bits[" << PredicateNamespace << "::" + << str.slice(1,str.size()) << "]"; else - o << "(Bits & " << PredicateNamespace << "::" << str << ")"; + o << "Bits[" << PredicateNamespace << "::" << str << "]"; } bool FilterChooser::emitPredicateMatch(raw_ostream &o, unsigned &Indentation, @@ -2010,7 +2010,7 @@ static void emitDecodeInstruction(formatted_raw_ostream &OS) { << " InsnType insn, uint64_t Address,\n" << " const void *DisAsm,\n" << " const MCSubtargetInfo &STI) {\n" - << " uint64_t Bits = STI.getFeatureBits();\n" + << " const FeatureBitset& Bits = STI.getFeatureBits();\n" << "\n" << " const uint8_t *Ptr = DecodeTable;\n" << " uint32_t CurFieldValue = 0;\n" |
