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fix: stop emitting .debug_pubnames and .debug_pubtypes

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`.debug_pubnames` and `.debug_pubtypes` are poorly designed and people
seldom use them. However, they take a considerable portion of size in
the final binary. This tells LLVM stop emitting those sections on
DWARFv4 or lower. DWARFv5 use `.debug_names` which is more concise
in size and performant for name lookup.
This commit is contained in:
Weihang Lo 2023-11-15 23:07:37 -05:00
parent a2d328fa12
commit 1667f3d2cc
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GPG key ID: D7DBF189825E82E7
4 changed files with 44 additions and 5 deletions
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25
compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
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@ -697,6 +697,25 @@ static DICompileUnit::DebugEmissionKind fromRust(LLVMRustDebugEmissionKind Kind)
}
}
enum class LLVMRustDebugNameTableKind {
Default,
GNU,
None,
};
static DICompileUnit::DebugNameTableKind fromRust(LLVMRustDebugNameTableKind Kind) {
switch (Kind) {
case LLVMRustDebugNameTableKind::Default:
return DICompileUnit::DebugNameTableKind::Default;
case LLVMRustDebugNameTableKind::GNU:
return DICompileUnit::DebugNameTableKind::GNU;
case LLVMRustDebugNameTableKind::None:
return DICompileUnit::DebugNameTableKind::None;
default:
report_fatal_error("bad DebugNameTableKind.");
}
}
enum class LLVMRustChecksumKind {
None,
MD5,
@ -765,13 +784,15 @@ extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateCompileUnit(
const char *Flags, unsigned RuntimeVer,
const char *SplitName, size_t SplitNameLen,
LLVMRustDebugEmissionKind Kind,
uint64_t DWOId, bool SplitDebugInlining) {
uint64_t DWOId, bool SplitDebugInlining,
LLVMRustDebugNameTableKind TableKind) {
auto *File = unwrapDI<DIFile>(FileRef);
return wrap(Builder->createCompileUnit(Lang, File, StringRef(Producer, ProducerLen),
isOptimized, Flags, RuntimeVer,
StringRef(SplitName, SplitNameLen),
fromRust(Kind), DWOId, SplitDebugInlining));
fromRust(Kind), DWOId, SplitDebugInlining,
false, fromRust(TableKind)));
}
extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateFile(