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* Fix some more LiveInterval enumerations.Jakob Stoklund Olesen2012-06-202-13/+12
| | | | | | Deterministically enumerate the virtual registers instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158872 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove LiveIntervalUnions from RegAllocBase.Jakob Stoklund Olesen2012-06-204-167/+14
| | | | | | They are living in LiveRegMatrix now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158868 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert RAGreedy to LiveRegMatrix interference checking.Jakob Stoklund Olesen2012-06-204-92/+169
| | | | | | | | | | | | | | | | | Stop depending on the LiveIntervalUnions in RegAllocBase, they are about to be removed. The changes are mostly replacing register alias iterators with regunit iterators, and querying LiveRegMatrix instrad of RegAllocBase. InterferenceCache is converted to work with per-regunit LiveIntervalUnions, and it checks fixed regunit interference separately, using the fixed live intervals provided by LiveIntervalAnalysis. The local splitting helper calcGapWeights() is also considering fixed regunit interference which is kept on the side now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158867 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert RABasic to using LiveRegMatrix interference checking.Jakob Stoklund Olesen2012-06-203-69/+67
| | | | | | | Stop using the LiveIntervalUnions provided by RegAllocBase, they will be removed soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158866 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable register unit liveness by default.Jakob Stoklund Olesen2012-06-201-1/+1
| | | | | | Soon we won't need to compute live intervals for physical registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158865 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach PBQPBuilder::build() about regunit interference.Jakob Stoklund Olesen2012-06-201-33/+31
| | | | | | | Filter out physreg candidates with regunit interferrence. Also compute regmask interference more efficiently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158864 91177308-0d34-0410-b5e6-96231b3b80d8
* Restructure PopulateLoopsDFS::insertIntoLoop.Andrew Trick2012-06-201-10/+11
| | | | | | As Nadav pointed out the first implementation was obscure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158862 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphixify the GEP FAQ.Bill Wendling2012-06-203-754/+544
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158858 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid iterating with LiveIntervals::iterator.Jakob Stoklund Olesen2012-06-203-41/+45
| | | | | | | | | | That is a DenseMap iterator keyed by pointers, so the iteration order is nondeterministic. I would like to replace the DenseMap with an IndexedMap which doesn't allow iteration. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158856 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r158846.Akira Hatanaka2012-06-206-300/+326
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158855 91177308-0d34-0410-b5e6-96231b3b80d8
* In MipsDisassembler.cpp, instead of defining register class tables, use the onesAkira Hatanaka2012-06-206-326/+300
| | | | | | | | | | | | that are generated by TableGen and are already available in MipsGenRegisterInfo.inc. Suggested by Jakob Stoklund Olesen. Also, fix bug in function DecodeAFGR64RegisterClass. Patch by Vladimir Medic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158846 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove an "else" that snuck in after a "return" ;)Kaelyn Uhrain2012-06-201-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158844 91177308-0d34-0410-b5e6-96231b3b80d8
* Check that a file is not a directory before reading it into a MemoryBuffer.Kaelyn Uhrain2012-06-201-0/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158841 91177308-0d34-0410-b5e6-96231b3b80d8
* Add "extern template" declarations now that we use explicit instantiation.Andrew Trick2012-06-202-1/+23
| | | | | | | | | | | | | This is supported by gcc and clang, but guarded by a macro for MSVC 2008. The extern template declaration is not necessary but generally good form. It can avoid extra instantiations of the template methods defined inline. The EXTERN_TEMPLATE_INSTANTIATION macro could probably be generalized to handle multiple template parameters if someone thinks it's worthwhile. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158840 91177308-0d34-0410-b5e6-96231b3b80d8
* Add users of a MERGE_VALUE node to the worklist to process again when the ↵Pete Cooper2012-06-201-0/+3
| | | | | | node is removed. Sorry, no test case. Foudn it by inspection of the code git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158839 91177308-0d34-0410-b5e6-96231b3b80d8
* Only update regunit live ranges that have been precomputed.Jakob Stoklund Olesen2012-06-203-4/+15
| | | | | | | | | | | Regunit live ranges are computed on demand, so when mi-sched calls handleMove, some regunits may not have live ranges yet. That makes updating them easier: Just skip the non-existing ranges. They will be computed correctly from the rescheduled machine code when they are needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158831 91177308-0d34-0410-b5e6-96231b3b80d8
* replace usage of EmitGEPOffset() with TargetData::getIndexedOffset() when ↵Nuno Lopes2012-06-202-8/+6
| | | | | | | | | | the GEP offset is known to be constant. With this change, we avoid relying on the IR Builder to constant fold the operations. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158829 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete dead code.Jakob Stoklund Olesen2012-06-201-48/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158827 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for generating reg+reg (indexed) pre-inc loads on PPC.Hal Finkel2012-06-205-10/+155
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158823 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix DAGCombine to deal with ext-conversion of pre/post_inc loads.Hal Finkel2012-06-201-1/+8
| | | | | | The test case for this will come with the PPC indexed preinc loads commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158822 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixing a compiler warning in MSVC 10.Aaron Ballman2012-06-201-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158820 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the SegmentedStack document.Bill Wendling2012-06-203-94/+86
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158819 91177308-0d34-0410-b5e6-96231b3b80d8
* Move coding standards reference from development_process.rst to programming.rst.Bill Wendling2012-06-202-8/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158818 91177308-0d34-0410-b5e6-96231b3b80d8
* Unindent list.Bill Wendling2012-06-201-17/+17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158817 91177308-0d34-0410-b5e6-96231b3b80d8
* Un-indent list to remove ugly back-slash.Bill Wendling2012-06-201-18/+16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158816 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the formatting a bit.Bill Wendling2012-06-201-41/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158815 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the developer policy document.Bill Wendling2012-06-203-643/+533
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158814 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the lexicon doc.Bill Wendling2012-06-203-295/+196
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158813 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify BranchWeightMetadata document.Bill Wendling2012-06-203-165/+120
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158810 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the LTO document.Bill Wendling2012-06-203-402/+300
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158808 91177308-0d34-0410-b5e6-96231b3b80d8
* Unindent list.Bill Wendling2012-06-201-40/+40
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158806 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the AliasAnalysis document.Bill Wendling2012-06-203-1068/+708
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158805 91177308-0d34-0410-b5e6-96231b3b80d8
* Unindent list.Bill Wendling2012-06-201-15/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158804 91177308-0d34-0410-b5e6-96231b3b80d8
* Un-indent the list and remove ugly back-slash.Bill Wendling2012-06-201-44/+42
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158803 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove 'static' from inline functions defined in header files.Chandler Carruth2012-06-2011-36/+36
| | | | | | | | | | | | | | | | | There is a pretty staggering amount of this in LLVM's header files, this is not all of the instances I'm afraid. These include all of the functions that (in my build) are used by a non-static inline (or external) function. Specifically, these issues were caught by the new '-Winternal-linkage-in-inline' warning. I'll try to just clean up the remainder of the clearly redundant "static inline" cases on functions (not methods!) defined within headers if I can do so in a reliable way. There were even several cases of a missing 'inline' altogether, or my personal favorite "static bool inline". Go figure. ;] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158800 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix two rather subtle internal vs. external linker issues.Chandler Carruth2012-06-202-50/+40
| | | | | | | | | | | | | | | | | | | | | | I'll admit I'm not entirely satisfied with this change, but it seemed the cleanest option. Other suggestions quite welcome The issue is that the traits specializations have static methods which return the typedef'ed PHI_iterator type. In both the IR and MI layers this is typedef'ed to a custom iterator class defined in an anonymous namespace giving the types and the functions returning them internal linkage. However, because the traits specialization is defined in the 'llvm' namespace (where it has to be, specialized template lives there), and is in turn used in the templated implementation of the SSAUpdater. This led to the linkage conflict that Clang now warns about. The simplest solution to me was just to define the PHI_iterator as a nested class inside the trait specialization. That way it still doesn't get scoped widely, it can't be accidentally reused somewhere, etc. This is a little gross just because nested class definitions are a little gross, but the alternatives seem more ad-hoc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158799 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix inappropriate use of anonymous namespaces in unittests.Chandler Carruth2012-06-202-2/+6
| | | | | | | | | | | The TEST_F macros actually declare *subclasses* of the test fixtures. Even if they didn't we don't want them to declare external functions. The entire unit test, including both the fixture class and the fixture test cases should be wrapped in the anonymous namespace. This issue was caught by the new '-Winternal-linkage-in-inline' warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158798 91177308-0d34-0410-b5e6-96231b3b80d8
* Add predicate check around some patterns.Craig Topper2012-06-201-35/+37
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158797 91177308-0d34-0410-b5e6-96231b3b80d8
* Add predicate check around some patterns.Craig Topper2012-06-201-18/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158795 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't insert 128-bit UNDEF into 256-bit vectors. Just keep the 256-bit ↵Craig Topper2012-06-203-4/+15
| | | | | | vector. Original patch by Elena Demikhovsky. Tweaked by me to allow possibility of covering more cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158792 91177308-0d34-0410-b5e6-96231b3b80d8
* A new algorithm for computing LoopInfo. Temporarily disabled.Andrew Trick2012-06-204-2/+224
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | -stable-loops enables a new algorithm for generating the Loop forest. It differs from the original algorithm in a few respects: - Not determined by use-list order. - Initially guarantees RPO order of block and subloops. - Linear in the number of CFG edges. - Nonrecursive. I didn't want to change the LoopInfo API yet, so the block lists are still inclusive. This seems strange to me, and it means that building LoopInfo is not strictly linear, but it may not be a problem in practice. At least the block lists start out in RPO order now. In the future we may add an attribute or wrapper analysis that allows other passes to assume RPO order. The primary motivation of this work was not to optimize LoopInfo, but to allow reproducing performance issues by decomposing the compilation stages. I'm often unable to do this with the current LoopInfo, because the loop tree order determines Loop pass order. Serializing the IR tends to invert the order, which reverses the optimization order. This makes it nearly impossible to debug interdependent loop optimizations such as LSR. I also believe this will provide more stable performance results across time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158790 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the MakefileGuide document.Bill Wendling2012-06-203-1041/+959
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158789 91177308-0d34-0410-b5e6-96231b3b80d8
* Unbreak the MSVC build: add return to unimplemented functions.Francois Pichet2012-06-201-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158788 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the implementation of LoopInfo into LoopInfoImpl.h.Andrew Trick2012-06-204-442/+577
| | | | | | | | | The implementation only needs inclusion from LoopInfo.cpp and MachineLoopInfo.cpp. Clients of the interface should only include the interface. This makes the interface readable and speeds up rebuilds after modifying the implementation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158787 91177308-0d34-0410-b5e6-96231b3b80d8
* Sphinxify the CodingStandard documentation.Bill Wendling2012-06-203-1568/+1155
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158786 91177308-0d34-0410-b5e6-96231b3b80d8
* Add permissions(), map_file_pages(), and unmap_file_pages() to llvm::sys::fs ↵Nick Kledzik2012-06-204-9/+274
| | | | | | and add unit test. Unix is implemented. Windows side needs to be implemented. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158770 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't assert when given an empty range.Kaelyn Uhrain2012-06-201-1/+1
| | | | | | | | | | llvm::RawMemoryObject handles empty ranges just fine, and the assert can be triggered in the wild by e.g. invoking clang with a file that included an empty pre-compiled header file when clang has been built with assertions enabled. Without assertions enabled, clang will properly report that the empty file is not a valid PCH. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158769 91177308-0d34-0410-b5e6-96231b3b80d8
* Add regunit liveness support to LiveIntervals::handleMove().Jakob Stoklund Olesen2012-06-191-43/+50
| | | | | | | When LiveIntervals is tracking fixed interference in regunits, make sure to update those intervals as well. Currently guarded by -live-regunits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158766 91177308-0d34-0410-b5e6-96231b3b80d8
* Alphabetize.Bill Wendling2012-06-191-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158764 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up.Chad Rosier2012-06-191-17/+20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158762 91177308-0d34-0410-b5e6-96231b3b80d8
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