llvm-project/llvm
Robert Lougher e32564774c Remove debug location from common tail when tail-merging
The branch folding pass tail merges blocks into a common-tail.  However, the
tail retains the debug information from one of the original inputs to the
merge (chosen randomly).  This is a problem for sampled-based PGO, as hits
on the common-tail will be attributed to whichever block was chosen,
irrespective of which path was actually taken to the common-tail.

This patch fixes the issue by nulling the debug location for the common-tail.

Differential Revision: https://reviews.llvm.org/D25742

llvm-svn: 285093
2016-10-25 18:44:07 +00:00
..
bindings [Go bindings] Update for r284678 API changes. 2016-10-20 09:14:39 +00:00
cmake cmake: Make /usr/share/cmake installable with LLVM_DISTRIBUTION_COMPONENTS 2016-10-24 21:40:15 +00:00
docs [llvm-cov] Add support for loading coverage from multiple objects 2016-10-25 17:40:55 +00:00
examples [BuildingAJIT] Use the remote target triple to construct the TargetMachine in 2016-10-19 22:41:03 +00:00
include Make the LTO comdat api more symbol table friendly. 2016-10-25 12:02:03 +00:00
lib Remove debug location from common tail when tail-merging 2016-10-25 18:44:07 +00:00
projects [CMake] Correct configuration order of the sub-projects based on ther dependancies 2016-10-09 20:38:29 +00:00
resources
runtimes [CMake] Make the runtimes directory work with bootstrap builds 2016-10-19 21:50:25 +00:00
test Remove debug location from common tail when tail-merging 2016-10-25 18:44:07 +00:00
tools [llvm-cov] Add support for loading coverage from multiple objects 2016-10-25 17:40:55 +00:00
unittests [unittests] STLExtrasTest: Remove an MSVC 2013 workaround, NFCI. 2016-10-25 18:11:17 +00:00
utils Revert 285087. 2016-10-25 17:46:29 +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
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore
CMakeLists.txt cmake: Rename installhdrs to install-llvm-headers and fix the dependencies 2016-10-24 21:58:58 +00:00
CODE_OWNERS.TXT Take ownership of libLTO as discussed on llvm-dev. 2016-09-15 17:42:39 +00:00
CREDITS.TXT
LICENSE.TXT
LLVMBuild.txt
README.txt
RELEASE_TESTERS.TXT
configure
llvm.spec.in
pzero-fp-xored.ll [PPC] Generate positive FP zero using xor insn instead of loading from constant area 2016-10-24 17:31:09 +00:00

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