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| author | David Blaikie <dblaikie@gmail.com> | 2018-11-13 20:08:13 +0000 |
|---|---|---|
| committer | David Blaikie <dblaikie@gmail.com> | 2018-11-13 20:08:13 +0000 |
| commit | 27692de9cfa6224f496b982e12ecd3fb86593cc9 (patch) | |
| tree | 12088e9014d61240f1ad37a0b5e8642964722310 /clang/lib/Driver | |
| parent | bb279116f29617467a176f065c8ca4e84174e7f7 (diff) | |
| download | bcm5719-llvm-27692de9cfa6224f496b982e12ecd3fb86593cc9.tar.gz bcm5719-llvm-27692de9cfa6224f496b982e12ecd3fb86593cc9.zip | |
DebugInfo: Add a driver flag for DWARF debug_ranges base address specifier use.
Summary:
This saves a lot of relocations in optimized object files (at the cost
of some cost/increase in linked executable bytes), but gold's 32 bit
gdb-index support has a bug (
https://sourceware.org/bugzilla/show_bug.cgi?id=21894 ) so we can't
switch to this unconditionally. (& even if it weren't for that bug, one
might argue that some users would want to optimize in one direction or
the other - prioritizing object size or linked executable size)
Differential Revision: https://reviews.llvm.org/D54243
llvm-svn: 346789
Diffstat (limited to 'clang/lib/Driver')
| -rw-r--r-- | clang/lib/Driver/ToolChains/Clang.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp index 8de20f6e2e6..0e23aae2183 100644 --- a/clang/lib/Driver/ToolChains/Clang.cpp +++ b/clang/lib/Driver/ToolChains/Clang.cpp @@ -3188,6 +3188,11 @@ static void RenderDebugOptions(const ToolChain &TC, const Driver &D, ? "-gpubnames" : "-ggnu-pubnames"); + if (Args.hasFlag(options::OPT_fdebug_ranges_base_address, + options::OPT_fno_debug_ranges_base_address, false)) { + CmdArgs.push_back("-fdebug-ranges-base-address"); + } + // -gdwarf-aranges turns on the emission of the aranges section in the // backend. // Always enabled for SCE tuning. |
