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bors e2a3c9b3f0 Auto merge of #117962 - weihanglo:debug-name-table, r=wesleywiser 
fix: stop emitting `.debug_pubnames` and `.debug_pubtypes`

A continuation of #94181.
Fixes #48762
MCP can be found in <https://github.com/rust-lang/compiler-team/issues/688>.

`.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.

Some other no-really-useful personal notes:

<details><summary>Details</summary>
<p>

## Pepole saying they are not useful

* https://github.com/rust-lang/rust/issues/48762
* https://rust-lang.zulipchat.com/#narrow/stream/317568-t-compiler.2Fwg-debugging/topic/investigating.20debuginfo.20size/near/342713604
* `DwarfCompileUnit::hasDwarfPubSections()` — f633f325a1/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp (L1477-L1494)
* clang default to no debug name table when no option provided — f633f325a1/clang/lib/Frontend/CompilerInvocation.cpp (L1819-L1824)
* GCC explicitly says GDB doesn't use pub sections (`TARGET_WANT_DEBUG_PUB_SECTIONS` only be true on Darwin) — 5d2a360f0a/gcc/target.def (L6985-L6990) and 319b460545/gold/dwarf_reader.h (L424-L427)
* Probably the only place that makes use of pub section in lldb — 725115d7bb/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp (L2117-L2135)

* "The -gsplit-dwarf option requires -ggnu-pubnames." — 5d2a360f0a/gcc/opts.cc (L1205)

* LLVM: Always emit `.debug_names` with dwarf 5 for Apple platforms — https://reviews.llvm.org/D118754

</p>
</details>
2023-12-11 22:32:08 +00:00
..
assembly fix: stop emitting .debug_pubnames and .debug_pubtypes 2023-12-11 14:58:02 -05:00
auxiliary
codegen Remove codegen test that depends on optimizations 2023-12-10 09:18:26 -05:00
codegen-units
coverage Rollup merge of #118666 - Zalathar:body-closure, r=cjgillot 2023-12-09 00:48:10 -08:00
coverage-run-rustdoc
debuginfo
incremental Rename HandlerInner::delay_span_bug as HandlerInner::span_delayed_bug. 2023-12-02 09:01:19 +11:00
mir-opt Auto merge of #118550 - cjgillot:filecheck-const-prop, r=Mark-Simulacrum 2023-12-10 03:00:58 +00:00
pretty Improve print_tts by changing tokenstream::Spacing. 2023-12-11 09:19:09 +11:00
run-make Improve print_tts by changing tokenstream::Spacing. 2023-12-11 09:19:09 +11:00
run-make-fulldeps Merge Queries::{ongoing_codegen,linker}. 2023-11-22 13:22:49 +11:00
run-pass-valgrind
rustdoc Rollup merge of #118594 - hdost:patch-1, r=fmease 2023-12-05 16:08:35 +01:00
rustdoc-gui Extend GUI tests for doc_cfg 2023-12-07 10:44:55 +01:00
rustdoc-js rustdoc-search: fix fast path unboxing bindings 2023-12-10 20:53:53 -07:00
rustdoc-js-std Auto merge of #118077 - calebzulawski:sync-portable-simd-2023-11-19, r=workingjubilee 2023-12-02 18:04:01 +00:00
rustdoc-json
rustdoc-ui Rename HandlerInner::delay_span_bug as HandlerInner::span_delayed_bug. 2023-12-02 09:01:19 +11:00
ui Rollup merge of #118726 - dtolnay:matchguardlet, r=compiler-errors 2023-12-11 20:46:49 +01:00
ui-fulldeps remove redundant imports 2023-12-10 10:56:22 +08:00
COMPILER_TESTS.md