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Bitcode: Simplify MDNode subclass dispatch, NFC 

llvm-svn: 226535
This commit is contained in:
Duncan P. N. Exon Smith 2015-01-20 01:03:09 +00:00
parent 6592deeab2
commit db6bc8bfdf
1 changed files with 21 additions and 10 deletions
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31
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -764,7 +764,7 @@ static void WriteValueAsMetadata(const ValueAsMetadata *MD,
static void WriteMDTuple(const MDTuple *N, const ValueEnumerator &VE,
BitstreamWriter &Stream,
SmallVectorImpl<uint64_t> &Record) {
SmallVectorImpl<uint64_t> &Record, unsigned Abbrev) {
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
Metadata *MD = N->getOperand(i);
assert(!(MD && isa<LocalAsMetadata>(MD)) &&
@ -773,7 +773,7 @@ static void WriteMDTuple(const MDTuple *N, const ValueEnumerator &VE,
}
Stream.EmitRecord(N->isDistinct() ? bitc::METADATA_DISTINCT_NODE
: bitc::METADATA_NODE,
Record);
Record, Abbrev);
Record.clear();
}
@ -791,6 +791,12 @@ static void WriteMDLocation(const MDLocation *N, const ValueEnumerator &VE,
Record.clear();
}
static void WriteGenericDwarfNode(const GenericDwarfNode *,
const ValueEnumerator &, BitstreamWriter &,
SmallVectorImpl<uint64_t> &, unsigned) {
llvm_unreachable("unimplemented");
}
static void WriteModuleMetadata(const Module *M,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
@ -810,7 +816,7 @@ static void WriteModuleMetadata(const Module *M,
MDSAbbrev = Stream.EmitAbbrev(Abbv);
}
unsigned LocAbbrev = 0;
unsigned MDLocationAbbrev = 0;
if (VE.hasMDLocation()) {
// Abbrev for METADATA_LOCATION.
//
@ -823,7 +829,7 @@ static void WriteModuleMetadata(const Module *M,
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
LocAbbrev = Stream.EmitAbbrev(Abbv);
MDLocationAbbrev = Stream.EmitAbbrev(Abbv);
}
unsigned NameAbbrev = 0;
@ -836,15 +842,20 @@ static void WriteModuleMetadata(const Module *M,
NameAbbrev = Stream.EmitAbbrev(Abbv);
}
unsigned MDTupleAbbrev = 0;
unsigned GenericDwarfNodeAbbrev = 0;
SmallVector<uint64_t, 64> Record;
for (const Metadata *MD : MDs) {
if (const MDLocation *Loc = dyn_cast<MDLocation>(MD)) {
WriteMDLocation(Loc, VE, Stream, Record, LocAbbrev);
continue;
}
if (const MDNode *N = dyn_cast<MDNode>(MD)) {
WriteMDTuple(cast<MDTuple>(N), VE, Stream, Record);
continue;
switch (N->getMetadataID()) {
default:
llvm_unreachable("Invalid MDNode subclass");
#define HANDLE_MDNODE_LEAF(CLASS) \
case Metadata::CLASS##Kind: \
Write##CLASS(cast<CLASS>(N), VE, Stream, Record, CLASS##Abbrev); \
continue;
#include "llvm/IR/Metadata.def"
}
}
if (const auto *MDC = dyn_cast<ConstantAsMetadata>(MD)) {
WriteValueAsMetadata(MDC, VE, Stream, Record);