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David Blaikie 90453c8d1a DebugInfo: ensure type and namespace names are included in pubnames/pubtypes even when they are only present in type units 
While looking to add support for placing singular types (types that will
only be emitted in one place (such as attached to a strong vtable or
explicit template instantiation definition)) not in type units (since
type units have overhead) I stumbled across that change causing an
increase in pubtypes.

Turns out we were missing some types from type units if they were only
referenced from other type units and not from the debug_info section.

This fixes that, following GCC's line of describing the offset of such
entities as the CU die (since there's no compile unit-relative offset
that would describe such an entity - they aren't in the CU). Also like
GCC, this change prefers to describe the type stub within the CU rather
than the "just use the CU offset" fallback where possible. This may give
the DWARF consumer some opportunity to find the extra info in the type
stub - though I'm not sure GDB does anything with this currently.

The size of the pubnames/pubtypes sections now match exactly with or
without type units enabled.

This nearly triples (+189%) the pubtypes section for a clang self-host
and grows pubnames by 0.07% (without compression). For a total of 8%
increase in debug info sections of the objects of a Split DWARF build
when using type units.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293971 91177308-0d34-0410-b5e6-96231b3b80d8
2017-02-03 00:44:18 +00:00
bindings Fix go bindings after r289702 (hopefully, don't really know how to build 2016-12-15 06:54:29 +00:00
cmake Fix LLDB Android AArch64 GCC debug info build 2017-02-02 01:17:49 +00:00
docs MC: Introduce the ABS8 symbol modifier. 2017-01-31 18:28:44 +00:00
examples Use print() instead of dump() in code 2017-01-28 02:47:46 +00:00
include [ThinLTO] Add an auto-hide feature 2017-02-03 00:32:38 +00:00
lib DebugInfo: ensure type and namespace names are included in pubnames/pubtypes even when they are only present in type units 2017-02-03 00:44:18 +00:00
projects [CMake] Correct configuration order of the sub-projects based on ther dependancies 2016-10-09 20:38:29 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake] Handle common options for runtimes build 2017-01-10 19:47:05 +00:00
test DebugInfo: ensure type and namespace names are included in pubnames/pubtypes even when they are only present in type units 2017-02-03 00:44:18 +00:00
tools llvm-readobj: fix next note entry calculation and print unknown note types 2017-02-02 23:44:49 +00:00
unittests Change debug-info-for-profiling from a TargetOption to a function attribute. 2017-02-01 22:45:09 +00:00
utils [opt-viewer] HTML-escape function names 2017-02-02 05:49:02 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore [AVR] Add the integrated testing tool to the .gitignore 2016-12-14 11:47:14 +00:00
CMakeLists.txt This addresses LLDB bug 31699, which was caused by LLVM using static linking on Windows. 2017-01-28 07:39:52 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take ownership of IR Linker as discussed on llvm-dev 2016-12-02 14:06:53 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Revert revision 289721. 2016-12-14 21:58:42 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
README.txt Test commit. 2017-01-27 23:59:26 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.