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2012-06-20replace usage of EmitGEPOffset() with TargetData::getIndexedOffset() when ↵Nuno Lopes
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
2012-06-20Delete dead code.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158827 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Add support for generating reg+reg (indexed) pre-inc loads on PPC.Hal Finkel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158823 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Fix DAGCombine to deal with ext-conversion of pre/post_inc loads.Hal Finkel
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
2012-06-20Fixing a compiler warning in MSVC 10.Aaron Ballman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158820 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify the SegmentedStack document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158819 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Move coding standards reference from development_process.rst to programming.rst.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158818 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Unindent list.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158817 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Un-indent list to remove ugly back-slash.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158816 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Fix the formatting a bit.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158815 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify the developer policy document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158814 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify the lexicon doc.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158813 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify BranchWeightMetadata document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158810 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify the LTO document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158808 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Unindent list.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158806 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify the AliasAnalysis document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158805 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Unindent list.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158804 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Un-indent the list and remove ugly back-slash.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158803 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Remove 'static' from inline functions defined in header files.Chandler Carruth
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
2012-06-20Fix two rather subtle internal vs. external linker issues.Chandler Carruth
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
2012-06-20Fix inappropriate use of anonymous namespaces in unittests.Chandler Carruth
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
2012-06-20Add predicate check around some patterns.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158797 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Add predicate check around some patterns.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158795 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Don't insert 128-bit UNDEF into 256-bit vectors. Just keep the 256-bit ↵Craig Topper
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
2012-06-20A new algorithm for computing LoopInfo. Temporarily disabled.Andrew Trick
-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
2012-06-20Sphinxify the MakefileGuide document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158789 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Unbreak the MSVC build: add return to unimplemented functions.Francois Pichet
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158788 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Move the implementation of LoopInfo into LoopInfoImpl.h.Andrew Trick
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
2012-06-20Sphinxify the CodingStandard documentation.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158786 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Add permissions(), map_file_pages(), and unmap_file_pages() to llvm::sys::fs ↵Nick Kledzik
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
2012-06-20Don't assert when given an empty range.Kaelyn Uhrain
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
2012-06-19Add regunit liveness support to LiveIntervals::handleMove().Jakob Stoklund Olesen
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
2012-06-19Alphabetize.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158764 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Tidy up.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158762 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add an ensureMaxAlignment() function to MachineFrameInfo (analogous toChad Rosier
ensureAlignment() in MachineFunction). Also, drop setMaxAlignment() in favor of this new function. This creates a main entry point to setting MaxAlignment, which will be helpful for future work. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158758 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add DAG-combines for aggressive FMA formation.Lang Hames
This patch adds DAG combines to form FMAs from pairs of FADD + FMUL or FSUB + FMUL. The combines are performed when: (a) Either AllowExcessFPPrecision option (-enable-excess-fp-precision for llc) OR UnsafeFPMath option (-enable-unsafe-fp-math) are set, and (b) TargetLoweringInfo::isFMAFasterThanMulAndAdd(VT) is true for the type of the FADD/FSUB, and (c) The FMUL only has one user (the FADD/FSUB). If your target has fast FMA instructions you can make use of these combines by overriding TargetLoweringInfo::isFMAFasterThanMulAndAdd(VT) to return true for types supported by your FMA instruction, and adding patterns to match ISD::FMA to your FMA instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158757 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-1980 col.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158755 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Typo. Patch by Cameron McInally <cameron.mcinally@nyu.edu>.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158754 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add Projects.rst to the toctree.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158753 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Use correct capitalization.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158752 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add a triple.Jakob Stoklund Olesen
The test was failing on Linux because of asm syntax differences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158748 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Implement PPCInstrInfo::isCoalescableExtInstr().Jakob Stoklund Olesen
The PPC::EXTSW instruction preserves the low 32 bits of its input, just like some of the x86 instructions. Use it to reduce register pressure when the low 32 bits have multiple uses. This requires a small change to PeepholeOptimizer since EXTSW takes a 64-bit input register. This is related to PR5997. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Style: Don't reuse variables for multiple purposes.Jakob Stoklund Olesen
No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158742 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19New test tool: obj2yamlMarshall Clow
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158730 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Indent coding examples.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158728 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Remove bad HTML tags. Add missing :.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158726 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Fix PR13148, an inf-loop in StringMap.Chandler Carruth
StringMap suffered from the same bug as DenseMap: when you explicitly construct it with a small number of buckets, you can arrange for the tombstone-based growth path to be followed when the number of buckets was less than '8'. In that case, even with a full map, it would compare '0' as not less than '0', and refuse to grow the table, leading to inf-loops trying to find an empty bucket on the next insertion. The fix is very simple: use '<=' as the comparison. The same fix was applied to DenseMap as well during its recent refactoring. Thanks to Alex Bolz for the great report and test case. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158725 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Remove some superfluous SCOPED_TRACEs from this unit test.Chandler Carruth
GoogleTest already prints errors with all the information about which test case contained the error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158724 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Emit TableGen's header comment with C-style comments, so it can be used from ↵Benjamin Kramer
C89 code. Should silence warnings when compiling the X86 disassembler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158723 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Have ARM ELF use correct reloc for "b" instr.Jan Wen Voung
The condition code didn't actually matter for arm "b" instructions, unlike "bl". It should just use the R_ARM_JUMP24 reloc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158722 91177308-0d34-0410-b5e6-96231b3b80d8
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