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llvm-mirror/lib/LTO
Joerg Sonnenberger a1971791a7 Split the SimplifyCFG pass into two variants.
The first variant contains all current transformations except
transforming switches into lookup tables. The second variant
contains all current transformations.

The switch-to-lookup-table conversion results in code that is more
difficult to analyze and optimize by other passes. Most importantly,
it can inhibit Dead Code Elimination. As such it is often beneficial to
only apply this transformation very late. A common example is inlining,
which can often result in range restrictions for the switch expression.

Changes in execution time according to LNT:
SingleSource/Benchmarks/Misc/fp-convert +3.03%
MultiSource/Benchmarks/ASC_Sequoia/CrystalMk/CrystalMk -11.20%
MultiSource/Benchmarks/Olden/perimeter/perimeter -10.43%
and a couple of smaller changes. For perimeter it also results 2.6%
a smaller binary.

Differential Revision: https://reviews.llvm.org/D30333

llvm-svn: 298799
2017-03-26 06:44:08 +00:00
..
Caching.cpp Try using llvm::errc, should hopefully fix version mismatch problem on clang-s390x-linux bot. 2017-03-20 18:19:41 +00:00
CMakeLists.txt [CMake] NFC. Updating CMake dependency specifications 2016-11-17 04:36:50 +00:00
LLVMBuild.txt [lib/LTO] Add a way to run a custom pipeline 2016-09-07 17:46:16 +00:00
LTO.cpp LTO: Hash type identifier resolutions for WholeProgramDevirt. 2017-03-10 21:37:10 +00:00
LTOBackend.cpp IPO: Const correctness for summaries passed into passes. 2017-03-22 18:22:59 +00:00
LTOCodeGenerator.cpp Split the SimplifyCFG pass into two variants. 2017-03-26 06:44:08 +00:00
LTOModule.cpp fix nullptr Mangler in LTOModule 2017-02-04 01:28:44 +00:00
ThinLTOCodeGenerator.cpp Support, LTO: When pruning a directory, ignore files matching a prefix. 2017-03-20 16:41:57 +00:00
UpdateCompilerUsed.cpp [Analysis] Add LibFunc_ prefix to enums in TargetLibraryInfo. (NFC) 2017-01-23 23:16:46 +00:00