llvm-project/llvm
Mehdi Amini 96ab48f9da DebugInfo: Include .dwo file name when hashing multiple CUs in a single file
This is really a workaround for ThinLTO in particular - since it can
import partial CUs that may end up looking very similar/the same as
the same partial import in another ThinLTO compile.

An alternative fix would be to change the DICompileUnit metadata to
include a "primary file" or the like - and when importing for ThinLTO
set the primary file to the name of the DICompileUnit that is being
imported into. This involves changing the schema and would reduce the
excessive uniqueness in the hash that this change creates - allowing
diagnosing of more duplicate CUs than will be caught with this change.

But duplicate CUs can still be caught in non-ThinLTO builds & are mostly
a nuisance rather than a particularly deliberate/effective tool for
finding broken code. (arguably the hash could always include the dwo
file and nothing in fission would break, I think..)

Reapply of r304119 after adding a triple to the test and moving it
to the X86 directory.

llvm-svn: 304130
2017-05-29 06:32:34 +00:00
..
bindings [go bindings] Rmove duplicated conversion function definitions after r300843. 2017-04-20 19:06:11 +00:00
cmake CMake: Fix docs-llvm-man target when clang+llvm is in the same source tree 2017-05-15 09:34:23 +00:00
docs Add constrained intrinsics for some libm-equivalent operations 2017-05-25 21:31:00 +00:00
examples [Examples] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-26 00:00:14 +00:00
include [InstrProf] Use more ArrayRef/StringRef. 2017-05-28 13:23:02 +00:00
lib DebugInfo: Include .dwo file name when hashing multiple CUs in a single file 2017-05-29 06:32:34 +00:00
projects Add temporary workaround to allow in-tree libc++ builds on Windows 2017-05-11 01:44:30 +00:00
resources
runtimes [CMake][runtimes] Use -nodefaultlibs for the runtimes build 2017-04-13 21:29:03 +00:00
test DebugInfo: Include .dwo file name when hashing multiple CUs in a single file 2017-05-29 06:32:34 +00:00
tools [llvm-pdbdump] pdb2yaml: add an -all option to dump everything we can 2017-05-26 23:46:20 +00:00
unittests Reverted r304083 as it seems there is a desire to address this in the googletest. 2017-05-28 05:50:22 +00:00
utils Don't capture a temporary std::string in a StringRef. 2017-05-29 02:20:12 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt Update the documentation and CMake file for Visual Studio generators. 2017-05-25 21:01:30 +00:00
CODE_OWNERS.TXT
CREDITS.TXT update of the url 2017-05-14 07:55:01 +00:00
LICENSE.TXT
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT
configure
llvm.spec.in

README.txt

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