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finish implementation of basic abbrev writing.

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llvm-svn: 36364
This commit is contained in:
Chris Lattner 2007-04-23 17:43:52 +00:00
parent 5510ac5a56
commit 69a8eda44d
1 changed files with 69 additions and 4 deletions
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73
include/llvm/Bitcode/BitstreamWriter.h
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@ -194,11 +194,40 @@ public:
unsigned AbbrevNo = Abbrev-bitc::FIRST_ABBREV;
assert(AbbrevNo < CurAbbrevs.size() && "Invalid abbrev #!");
BitCodeAbbrev *Abbv = CurAbbrevs[AbbrevNo];
assert(0 && "TODO");
EmitCode(Abbrev);
// Insert the code into Vals to treat it uniformly.
Vals.insert(Vals.begin(), Code);
unsigned RecordIdx = 0;
for (unsigned i = 0, e = Abbv->getNumOperandInfos(); i != e; ++i) {
assert(RecordIdx < Vals.size() && "Invalid abbrev/record");
const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
uint64_t RecordVal = Vals[RecordIdx];
if (Op.isLiteral()) {
// If the abbrev specifies the literal value to use, don't emit
// anything.
assert(RecordVal == Op.getLiteralValue() &&
"Invalid abbrev for record!");
++RecordIdx;
} else {
// Encode the value as we are commanded.
switch (Op.getEncoding()) {
default: assert(0 && "Unknown encoding!");
case BitCodeAbbrevOp::FixedWidth:
Emit64(RecordVal, Op.getEncodingData());
++RecordIdx;
break;
case BitCodeAbbrevOp::VBR:
EmitVBR64(RecordVal, Op.getEncodingData());
++RecordIdx;
break;
}
}
}
assert(RecordIdx == Vals.size() && "Not all record operands emitted!");
} else {
// If we don't have an abbrev to use, emit this in its fully unabbreviated
// form.
@ -215,7 +244,43 @@ public:
void EmitRecord(unsigned Code, SmallVectorImpl<unsigned> &Vals,
unsigned Abbrev = 0) {
if (Abbrev) {
assert(0 && "abbrevs not implemented yet!");
unsigned AbbrevNo = Abbrev-bitc::FIRST_ABBREV;
assert(AbbrevNo < CurAbbrevs.size() && "Invalid abbrev #!");
BitCodeAbbrev *Abbv = CurAbbrevs[AbbrevNo];
EmitCode(Abbrev);
// Insert the code into Vals to treat it uniformly.
Vals.insert(Vals.begin(), Code);
unsigned RecordIdx = 0;
for (unsigned i = 0, e = Abbv->getNumOperandInfos(); i != e; ++i) {
assert(RecordIdx < Vals.size() && "Invalid abbrev/record");
const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
unsigned RecordVal = Vals[RecordIdx];
if (Op.isLiteral()) {
// If the abbrev specifies the literal value to use, don't emit
// anything.
assert(RecordVal == Op.getLiteralValue() &&
"Invalid abbrev for record!");
++RecordIdx;
} else {
// Encode the value as we are commanded.
switch (Op.getEncoding()) {
default: assert(0 && "Unknown encoding!");
case BitCodeAbbrevOp::FixedWidth:
Emit(RecordVal, Op.getEncodingData());
++RecordIdx;
break;
case BitCodeAbbrevOp::VBR:
EmitVBR(RecordVal, Op.getEncodingData());
++RecordIdx;
break;
}
}
}
assert(RecordIdx == Vals.size() && "Not all record operands emitted!");
} else {
// If we don't have an abbrev to use, emit this in its fully unabbreviated
// form.