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* delinearization of arraysSebastian Pop2013-11-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194527 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the very substantial, largely unmaintained legacy PGOChandler Carruth2013-10-02
| | | | | | | | | | | | | | | | | | | | infrastructure. This was essentially work toward PGO based on a design that had several flaws, partially dating from a time when LLVM had a different architecture, and with an effort to modernize it abandoned without being completed. Since then, it has bitrotted for several years further. The result is nearly unusable, and isn't helping any of the modern PGO efforts. Instead, it is getting in the way, adding confusion about PGO in LLVM and distracting everyone with maintenance on essentially dead code. Removing it paves the way for modern efforts around PGO. Among other effects, this removes the last of the runtime libraries from LLVM. Those are being developed in the separate 'compiler-rt' project now, with somewhat different licensing specifically more approriate for runtimes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191835 91177308-0d34-0410-b5e6-96231b3b80d8
* Also update CMakeLists.txt for r187283.Nick Lewycky2013-07-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187284 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove -print-dbginfo as it is unused & bitrotten.David Blaikie2013-03-08
| | | | | | | | This pass hasn't been touched in two years & would fail with assertions against the current debug info metadata format (the only test case for it still uses a many-versions old debug info metadata format) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176707 91177308-0d34-0410-b5e6-96231b3b80d8
* Sink InlineCost.cpp into IPA -- it is now officially an interproceduralChandler Carruth2013-01-21
| | | | | | | | | | analysis. How cute that it wasn't previously. ;] Part of this confusion stems from the flattened header file tree. Thanks to Benjamin for pointing out the goof on IRC, and we're considering un-flattening the headers, so speak now if that would bug you. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173033 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetTransformInfo to live under the Analysis library. This noChandler Carruth2013-01-07
| | | | | | | longer would violate any dependency layering and it is in fact an analysis. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171686 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new visitor for walking the uses of a pointer value.Chandler Carruth2012-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This visitor provides infrastructure for recursively traversing the use-graph of a pointer-producing instruction like an alloca or a malloc. It maintains a worklist of uses to visit, so it can handle very deep recursions. It automatically looks through instructions which simply translate one pointer to another (bitcasts and GEPs). It tracks the offset relative to the original pointer as long as that offset remains constant and exposes it during the visit as an APInt offset. Finally, it performs conservative escape analysis. However, currently it has some limitations that should be addressed going forward: 1) It doesn't handle vectors of pointers. 2) It doesn't provide a cheaper visitor when the constant offset tracking isn't needed. 3) It doesn't support non-instruction pointer values. The current functionality is exactly what is required to implement the SROA pointer-use visitors in terms of this one, rather than in terms of their own ad-hoc base visitor, which was always very poorly specified. SROA has been converted to use this, and the code there deleted which this utility now provides. Technically speaking, using this new visitor allows SROA to handle a few more cases than it previously did. It is now more aggressive in ignoring chains of instructions which look like they would defeat SROA, but in fact do not because they never result in a read or write of memory. While this is "neat", it shouldn't be interesting for real programs as any such chains should have been removed by others passes long before we get to SROA. As a consequence, I've not added any tests for these features -- it shouldn't be part of SROA's contract to perform such heroics. The goal is to extend the functionality of this visitor going forward, and re-use it from passes like ASan that can benefit from doing a detailed walk of the uses of a pointer. Thanks to Ben Kramer for the code review rounds and lots of help reviewing and debugging this patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169728 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a cost model analysis that allows us to estimate the cost of IR-level ↵Nadav Rotem2012-11-02
| | | | | | instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167324 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove LoopDependenceAnalysis.Benjamin Kramer2012-10-26
| | | | | | | It was unmaintained and not much more than a stub. The new DependenceAnalysis pass is both more general and complete. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166810 91177308-0d34-0410-b5e6-96231b3b80d8
* dependence analysisSebastian Pop2012-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Preston Briggs <preston.briggs@gmail.com>. This is an updated version of the dependence-analysis patch, including an MIV test based on Banerjee's inequalities. It's a fairly complete implementation of the paper Practical Dependence Testing Gina Goff, Ken Kennedy, and Chau-Wen Tseng PLDI 1991 It cannot yet propagate constraints between coupled RDIV subscripts (discussed in Section 5.3.2 of the paper). It's organized as a FunctionPass with a single entry point that supports testing for dependence between two instructions in a function. If there's no dependence, it returns null. If there's a dependence, it returns a pointer to a Dependence which can be queried about details (what kind of dependence, is it loop independent, direction and distance vector entries, etc). I haven't included every imaginable feature, but there's a good selection that should be adequate for supporting many loop transformations. Of course, it can be extended as necessary. Included in the patch file are many test cases, commented with C code showing the loops and array references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
* Profile: set branch weight metadata with data generated from profiling.Manman Ren2012-08-28
| | | | | | | | | | This patch implements ProfileDataLoader which loads profile data generated by -insert-edge-profiling and updates branch weight metadata accordingly. Patch by Alastair Murray. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162799 91177308-0d34-0410-b5e6-96231b3b80d8
* Update the CMake files.Bill Wendling2012-06-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159417 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix cmake failure from moving files around.Bill Wendling2012-06-28
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* llvm/lib: [CMake] Add explicit dependency to intrinsics_gen.NAKAMURA Takumi2012-06-24
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* Pull the implementation of the code metrics out of the inline costChandler Carruth2012-03-16
| | | | | | | | | | | analysis implementation. The header was already separated. Also cleanup all the comments in the header to follow a nice modern doxygen form. There is still plenty of cruft here, but some of that will fall out in subsequent refactorings and this was an easy step in the right direction. No functionality changed here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152898 91177308-0d34-0410-b5e6-96231b3b80d8
* build/CMake: Finish removal of add_llvm_library_dependencies.Daniel Dunbar2011-11-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145420 91177308-0d34-0410-b5e6-96231b3b80d8
* Rewrite the CMake build to use explicit dependencies between libraries,Chandler Carruth2011-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | specified in the same file that the library itself is created. This is more idiomatic for CMake builds, and also allows us to correctly specify dependencies that are missed due to bugs in the GenLibDeps perl script, or change from compiler to compiler. On Linux, this returns CMake to a place where it can relably rebuild several targets of LLVM. I have tried not to change the dependencies from the ones in the current auto-generated file. The only places I've really diverged are in places where I was seeing link failures, and added a dependency. The goal of this patch is not to start changing the dependencies, merely to move them into the correct location, and an explicit form that we can control and change when necessary. This also removes a serialization point in the build because we don't have to scan all the libraries before we begin building various tools. We no longer have a step of the build that regenerates a file inside the source tree. A few other associated cleanups fall out of this. This isn't really finished yet though. After talking to dgregor he urged switching to a single CMake macro to construct libraries with both sources and dependencies in the arguments. Migrating from the two macros to that style will be a follow-up patch. Also, llvm-config is still generated with GenLibDeps.pl, which means it still has slightly buggy dependencies. The internal CMake 'llvm-config-like' macro uses the correct explicitly specified dependencies however. A future patch will switch llvm-config generation (when using CMake) to be based on these deps as well. This may well break Windows. I'm getting a machine set up now to dig into any failures there. If anyone can chime in with problems they see or ideas of how to solve them for Windows, much appreciated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136433 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename BlockFrequency to BlockFrequencyInfo and MachineBlockFrequency toJakub Staszak2011-07-25
| | | | | | | MachineBlockFrequencyInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135937 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce BlockFrequency analysis for BasicBlocks.Jakub Staszak2011-06-23
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* New BranchProbabilityInfo analysis. Patch by Jakub Staszak!Andrew Trick2011-06-04
| | | | | | | | | | | | BranchProbabilityInfo provides an interface for IR passes to query the likelihood that control follows a CFG edge. This patch provides an initial implementation of static branch predication that will populate BranchProbabilityInfo for branches with no external profile information using very simple heuristics. It currently isn't hooked up to any external profile data, so static prediction does all the work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132613 91177308-0d34-0410-b5e6-96231b3b80d8
* Unbreak CMake build.Ted Kremenek2011-03-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126717 91177308-0d34-0410-b5e6-96231b3b80d8
* Move library stuff out of the toplevel CMakeLists.txt file.Oscar Fuentes2011-02-18
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* Implementation of path profiling.Andrew Trick2011-01-29
| | | | | | | | | | | Modified patch by Adam Preuss. This builds on the existing framework for block tracing, edge profiling and optimal edge profiling. See -help-hidden for new flags. For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124515 91177308-0d34-0410-b5e6-96231b3b80d8
* Move DominanceFrontier from VMCore to Analysis.Cameron Zwarich2011-01-18
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* Introduce DIBuilder. It is intended to be a front-end friendly interface to ↵Devang Patel2010-11-04
| | | | | | | | | | | | | | | emit debuggging information entries in LLVM IR. To create debugging information for a pointer, using DIBUilder front-end just needs DBuilder.CreatePointerType(Ty, Size); instead of DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_pointer_type, TheCU, "", getOrCreateMainFile(), 0, Size, 0, 0, 0, OCTy); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118248 91177308-0d34-0410-b5e6-96231b3b80d8
* Add RegionPass support.Tobias Grosser2010-10-20
| | | | | | | A RegionPass is executed like a LoopPass but on the regions detected by the RegionInfo pass instead of the loops detected by the LoopInfo pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116905 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix CMake buildDouglas Gregor2010-10-20
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* Remove PointerTracking from cmakelists …Benjamin Kramer2010-09-29
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* Removed a bunch of unnecessary target_link_libraries.Oscar Fuentes2010-09-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114999 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CMake build.Benjamin Kramer2010-09-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114128 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally."Michael J. Spencer2010-09-13
| | | | | | | | | | This reverts commit r113632 Conflicts: cmake/modules/AddLLVM.cmake git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113819 91177308-0d34-0410-b5e6-96231b3b80d8
* CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally.Michael J. Spencer2010-09-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113632 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix CMake buildMichael J. Spencer2010-08-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110097 91177308-0d34-0410-b5e6-96231b3b80d8
* Add new RegionInfo pass.Tobias Grosser2010-07-22
| | | | | | | | | | The RegionInfo pass detects single entry single exit regions in a function, where a region is defined as any subgraph that is connected to the remaining graph at only two spots. Furthermore an hierarchical region tree is built. Use it by calling "opt -regions analyze" or "opt -view-regions". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
* Move FindAvailableLoadedValue isSafeToLoadUnconditionally out ofDan Gohman2010-05-28
| | | | | | | | lib/Transforms/Utils and into lib/Analysis so that Analysis passes can use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a simple module-level debug info printer. It just sets up aDan Gohman2010-05-07
| | | | | | | DebugInfoFinder and iterates over all the contents calling print. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103262 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CMake build.Ted Kremenek2010-04-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100802 91177308-0d34-0410-b5e6-96231b3b80d8
* Update cmake build.Benjamin Kramer2010-04-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100713 91177308-0d34-0410-b5e6-96231b3b80d8
* add to cmakeChris Lattner2009-12-04
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* Stub out a new lazy value info pass, which will eventuallyChris Lattner2009-11-11
| | | | | | | vend value constraint information to the optimizer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86767 91177308-0d34-0410-b5e6-96231b3b80d8
* stub out a new libanalysis "instruction simplify" interface thatChris Lattner2009-11-09
| | | | | | | | | takes decimated instructions and applies identities to them. This is pretty minimal at this point, but I plan to pull some instcombine logic out into these and similar routines. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86613 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MallocFreeHelper as MemoryBuiltinsVictor Hernandez2009-10-27
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* Rename MallocHelper as MallocFreeHelper, since it now also identifies calls ↵Victor Hernandez2009-10-26
| | | | | | to free() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85181 91177308-0d34-0410-b5e6-96231b3b80d8
* add function passes for printing various dominator datastructuresChris Lattner2009-10-18
| | | | | | | accessible through opt. Patch by Tobias Grosser! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84397 91177308-0d34-0410-b5e6-96231b3b80d8
* Update the other CMake file.Benjamin Kramer2009-10-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84003 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CMake build yet again after a source file was removedDouglas Gregor2009-10-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83575 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some braces to make newer GCCs happy and update CMakeLists.Benjamin Kramer2009-09-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81443 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CMakeLists.Benjamin Kramer2009-09-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80669 91177308-0d34-0410-b5e6-96231b3b80d8
* Unbreak CMake buildDouglas Gregor2009-08-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80109 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a basic static ProfileInfo provider (ProfileEstimatorPass).Daniel Dunbar2009-08-08
| | | | | | | - Part of optimal static profiling patch sequence by Andreas Neustifter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78484 91177308-0d34-0410-b5e6-96231b3b80d8
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