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Enable DWARF accelerator tables by default when tuning for lldb (-glldb => -gpubnames) 

Summary:
DWARF v5 accelerator tables provide a considerable performance
improvement for lldb and will make the default -glldb behavior same on
all targets (right now we emit apple tables on apple targets, but these
are not controlled by -gpubnames, only by -glldb).

Reviewers: dblaikie

Subscribers: probinson, clayborg, JDevlieghere, aprantl, cfe-commits

Differential Revision: https://reviews.llvm.org/D51576

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@341472 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pavel Labath 2018-09-05 14:38:44 +00:00
parent 94bebbfde4
commit 2a4357b081
2 changed files with 4 additions and 1 deletions
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2
lib/Driver/ToolChains/Clang.cpp
View File

@ -3072,7 +3072,7 @@ static void RenderDebugOptions(const ToolChain &TC, const Driver &D,
const auto *PubnamesArg =
Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,
options::OPT_gpubnames, options::OPT_gno_pubnames);
if (SplitDWARFArg ||
if (SplitDWARFArg || DebuggerTuning == llvm::DebuggerKind::LLDB ||
(PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC)))
if (!PubnamesArg ||
(!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&

3
test/Driver/debug-options.c
View File

@ -165,6 +165,9 @@
// RUN: %clang -### -c -gsplit-dwarf %s 2>&1 | FileCheck -check-prefix=GPUB %s
// RUN: %clang -### -c -gsplit-dwarf -gno-pubnames %s 2>&1 | FileCheck -check-prefix=NOPUB %s
//
// RUN: %clang -### -c -glldb %s 2>&1 | FileCheck -check-prefix=GPUB %s
// RUN: %clang -### -c -glldb -gno-pubnames %s 2>&1 | FileCheck -check-prefix=NOPUB %s
//
// RUN: %clang -### -c -gdwarf-aranges %s 2>&1 | FileCheck -check-prefix=GARANGE %s
//
// RUN: %clang -### -fdebug-types-section -target x86_64-unknown-linux %s 2>&1 \