DebugInfo: Add metadata support for disabling DWARF pub sections
In cases where the debugger load time is a worthwhile tradeoff (or less
costly - such as loading from a DWP instead of a variety of DWOs
(possibly over a high-latency/distributed filesystem)) against object
file size, it can be reasonable to disable pubnames and corresponding
gdb-index creation in the linker.
A backend-flag version of this was implemented for NVPTX in
D44385/r327994 - which was fine for NVPTX which wouldn't mix-and-match
CUs. Now that it's going to be a user-facing option (likely powered by
"-gno-pubnames", the same as GCC) it should be encoded in the
DICompileUnit so it can vary per-CU.
After this, likely the NVPTX support should be migrated to the metadata
& the previous flag implementation should be removed.
Reviewers: aprantl
Differential Revision: https://reviews.llvm.org/D50213
llvm-svn: 339939
diff --git a/llvm/lib/IR/DIBuilder.cpp b/llvm/lib/IR/DIBuilder.cpp
index ee3323c..ce7e853 100644
--- a/llvm/lib/IR/DIBuilder.cpp
+++ b/llvm/lib/IR/DIBuilder.cpp
@@ -139,7 +139,8 @@
unsigned Lang, DIFile *File, StringRef Producer, bool isOptimized,
StringRef Flags, unsigned RunTimeVer, StringRef SplitName,
DICompileUnit::DebugEmissionKind Kind, uint64_t DWOId,
- bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames) {
+ bool SplitDebugInlining, bool DebugInfoForProfiling,
+ DICompileUnit::DebugNameTableKind NameTableKind) {
assert(((Lang <= dwarf::DW_LANG_Fortran08 && Lang >= dwarf::DW_LANG_C89) ||
(Lang <= dwarf::DW_LANG_hi_user && Lang >= dwarf::DW_LANG_lo_user)) &&
@@ -149,7 +150,7 @@
CUNode = DICompileUnit::getDistinct(
VMContext, Lang, File, Producer, isOptimized, Flags, RunTimeVer,
SplitName, Kind, nullptr, nullptr, nullptr, nullptr, nullptr, DWOId,
- SplitDebugInlining, DebugInfoForProfiling, GnuPubnames);
+ SplitDebugInlining, DebugInfoForProfiling, NameTableKind);
// Create a named metadata so that it is easier to find cu in a module.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");