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[Assignment Tracking][3/*] Add DIAssignID metadata boilerplate

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The Assignment Tracking debug-info feature is outlined in this RFC:

https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir

Add the DIAssignID metadata attachment boilerplate. Includes a textual-bitcode
roundtrip test and tests that the verifier and parser catch badly formed IR.

This piece of metadata links together stores (used as an attachment) and the
yet-to-be-added llvm.dbg.assign debug intrinsic (used as an operand).

Reviewed By: jmorse

Differential Revision: https://reviews.llvm.org/D132222
This commit is contained in:
OCHyams
2022-11-03 09:50:31 +00:00
parent d9176563dc
commit a2620e00ff
16 changed files with 207 additions and 4 deletions
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11
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
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@@ -340,6 +340,8 @@ private:
unsigned Abbrev);
void writeDIModule(const DIModule *N, SmallVectorImpl<uint64_t> &Record,
unsigned Abbrev);
void writeDIAssignID(const DIAssignID *N, SmallVectorImpl<uint64_t> &Record,
unsigned Abbrev);
void writeDITemplateTypeParameter(const DITemplateTypeParameter *N,
SmallVectorImpl<uint64_t> &Record,
unsigned Abbrev);
@@ -1949,6 +1951,15 @@ void ModuleBitcodeWriter::writeDIModule(const DIModule *N,
Record.clear();
}
void ModuleBitcodeWriter::writeDIAssignID(const DIAssignID *N,
SmallVectorImpl<uint64_t> &Record,
unsigned Abbrev) {
// There are no arguments for this metadata type.
Record.push_back(N->isDistinct());
Stream.EmitRecord(bitc::METADATA_ASSIGN_ID, Record, Abbrev);
Record.clear();
}
void ModuleBitcodeWriter::writeDITemplateTypeParameter(
const DITemplateTypeParameter *N, SmallVectorImpl<uint64_t> &Record,
unsigned Abbrev) {