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* Add a loop rerolling flag to the PassManagerBuilderHal Finkel2013-11-172-1/+3
| | | | | | | | | This adds a boolean member variable to the PassManagerBuilder to control loop rerolling (just like we have for unrolling and the various vectorization options). This is necessary for control by the frontend. Loop rerolling remains disabled by default at all optimization levels. llvm-svn: 194966
* python: Fix check for disasm creation failureAnders Waldenborg2013-11-172-1/+5
| | | | | | | | | | | | Check should be for pointer being NULL, not what it points to. Also adds a test for this case. Reviewed By: indygreg Differential Revision: http://llvm-reviews.chandlerc.com/D1878 llvm-svn: 194965
* python: Properly initialize before trying to create disasmAnders Waldenborg2013-11-171-0/+26
| | | | | | | | | | | | | | | | | As the "LLVMInitializeAll*" functions are not available as symbols in the shared library they can't be used, and as a workaround a list of the targets is kept and the individual symbols tried. As soon as the "All"-functions are changed to proper symbols (as opposed to static inlines in the headers) this hack will be replace with simple calls to the corresponding "LLVMInitializeAll*" functions. Reviewed By: indygreg CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1879 llvm-svn: 194964
* Update CREDITSAlp Toker2013-11-171-0/+5
| | | | llvm-svn: 194962
* Testcase for PR17964Bill Wendling2013-11-171-0/+10
| | | | llvm-svn: 194961
* Revert "Micro-optimization"Bill Wendling2013-11-171-4/+5
| | | | | | | | This reverts commit f1d9fe9d04ce93f6d5dcebbd2cb6a07414d7a029. This was causing PR17964. We need to use thread data before regular data. llvm-svn: 194960
* DAGCombiner: Partially revert r192795, getNOT was fixed not to create ↵Benjamin Kramer2013-11-172-1/+3
| | | | | | illegal constants. llvm-svn: 194959
* DebugLoc defines LineCol as 32 bit in comment but unsigned in code.Yaron Keren2013-11-171-1/+3
| | | | | | | | This patch modifies LineCol to be a uint32_t. See http://llvm.org/bugs/show_bug.cgi?id=17957 llvm-svn: 194957
* [block-freq] Add BlockFrequency::scale that returns a remainder from the ↵Michael Gottesman2013-11-173-40/+201
| | | | | | | | | | | | | | | | | | | | | | | | | | division and make the private scale in BlockFrequency more performant. This change is the first in a series of changes improving LLVM's Block Frequency propogation implementation to not lose probability mass in branchy code when propogating block frequency information from a basic block to its successors. This patch is a simple infrastructure improvement that does not actually modify the block frequency algorithm. The specific changes are: 1. Changes the division algorithm used when scaling block frequencies by branch probabilities to a short division algorithm. This gives us the remainder for free as well as provides a nice speed boost. When I benched the old routine and the new routine on a Sandy Bridge iMac with disabled turbo mode performing 8192 iterations on an array of length 32768, I saw ~600% increase in speed in mean/median performance. 2. Exposes a scale method that returns a remainder. This is important so we can ensure that when we scale a block frequency by some branch probability BP = N/D, the remainder from the division by D can be retrieved and propagated to other children to ensure no probability mass is lost (more to come on this). llvm-svn: 194950
* [PM] Completely remove support for explicit 'require' methods on theChandler Carruth2013-11-172-32/+6
| | | | | | | AnalysisManager. All this method did was assert something and we have a perfectly good way to trigger that assert from the query path. llvm-svn: 194947
* Use more getZExtOrTruncsMatt Arsenault2013-11-172-9/+2
| | | | llvm-svn: 194945
* Use getZExtOrTrunc instead of repeating the same logic.Matt Arsenault2013-11-171-5/+1
| | | | llvm-svn: 194944
* Add the cold attribute to error-reporting call sitesHal Finkel2013-11-172-0/+149
| | | | | | | | | | | Generally speaking, control flow paths with error reporting calls are cold. So far, error reporting calls are calls to perror and calls to fprintf, fwrite, etc. with stderr as the stream. This can be extended in the future. The primary motivation is to improve block placement (the cold attribute affects the static branch prediction heuristics). llvm-svn: 194943
* Added a size field to the stack map record to handle subregister spills.Andrew Trick2013-11-1710-82/+245
| | | | | | | | Implementing this on bigendian platforms could get strange. I added a target hook, getStackSlotRange, per Jakob's recommendation to make this as explicit as possible. llvm-svn: 194942
* Fix ndebug-build unused variable in loop rerollingHal Finkel2013-11-171-1/+1
| | | | llvm-svn: 194941
* Use right address space pointer sizeMatt Arsenault2013-11-172-1/+13
| | | | llvm-svn: 194940
* Add a loop rerolling passHal Finkel2013-11-1610-0/+1630
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a loop rerolling pass: the opposite of (partial) loop unrolling. The transformation aims to take loops like this: for (int i = 0; i < 3200; i += 5) { a[i] += alpha * b[i]; a[i + 1] += alpha * b[i + 1]; a[i + 2] += alpha * b[i + 2]; a[i + 3] += alpha * b[i + 3]; a[i + 4] += alpha * b[i + 4]; } and turn them into this: for (int i = 0; i < 3200; ++i) { a[i] += alpha * b[i]; } and loops like this: for (int i = 0; i < 500; ++i) { x[3*i] = foo(0); x[3*i+1] = foo(0); x[3*i+2] = foo(0); } and turn them into this: for (int i = 0; i < 1500; ++i) { x[i] = foo(0); } There are two motivations for this transformation: 1. Code-size reduction (especially relevant, obviously, when compiling for code size). 2. Providing greater choice to the loop vectorizer (and generic unroller) to choose the unrolling factor (and a better ability to vectorize). The loop vectorizer can take vector lengths and register pressure into account when choosing an unrolling factor, for example, and a pre-unrolled loop limits that choice. This is especially problematic if the manual unrolling was optimized for a machine different from the current target. The current implementation is limited to single basic-block loops only. The rerolling recognition should work regardless of how the loop iterations are intermixed within the loop body (subject to dependency and side-effect constraints), but the significant restriction is that the order of the instructions in each iteration must be identical. This seems sufficient to capture all current use cases. This pass is not currently enabled by default at any optimization level. llvm-svn: 194939
* The WebKit_JS CC preserves the same registers as the C CC.Juergen Ributzka2013-11-161-0/+1
| | | | llvm-svn: 194936
* Apply the InstCombine fptrunc sqrt optimization to llvm.sqrtHal Finkel2013-11-162-6/+24
| | | | | | | | | | | | | | | | | | | InstCombine, in visitFPTrunc, applies the following optimization to sqrt calls: (fptrunc (sqrt (fpext x))) -> (sqrtf x) but does not apply the same optimization to llvm.sqrt. This is a problem because, to enable vectorization, Clang generates llvm.sqrt instead of sqrt in fast-math mode, and because this optimization is being applied to sqrt and not applied to llvm.sqrt, sometimes the fast-math code is slower. This change makes InstCombine apply this optimization to llvm.sqrt as well. This fixes the specific problem in PR17758, although the same underlying issue (optimizations applied to libcalls are not applied to intrinsics) exists for other optimizations in SimplifyLibCalls. llvm-svn: 194935
* Fix assert on unaligned access to global with different address space size.Matt Arsenault2013-11-162-2/+24
| | | | llvm-svn: 194934
* Fix codegen for null different sized pointer.Matt Arsenault2013-11-162-2/+15
| | | | llvm-svn: 194932
* ScalarEvolution: Warn if the result of setFlags/clearFlags is unused.Benjamin Kramer2013-11-161-5/+6
| | | | | | This was a source of bugs in the past. llvm-svn: 194929
* Annotate APInt methods where it's not clear whether they are in place with ↵Benjamin Kramer2013-11-163-41/+47
| | | | | | | | warn_unused_result. Fix ScalarEvolution bugs uncovered by this. llvm-svn: 194928
* R600: Make dot_4 instructions predicableVincent Lejeune2013-11-162-0/+46
| | | | llvm-svn: 194927
* Use array_pod_sort instead of std::sortDuncan P. N. Exon Smith2013-11-161-1/+1
| | | | | | Per Rafael's review of r194514. llvm-svn: 194926
* InstCombine: fold (A >> C) == (B >> C) --> (A^B) < (1 << C) for constant Cs.Benjamin Kramer2013-11-163-8/+46
| | | | | | This is common in bitfield code. llvm-svn: 194925
* Fix filename in header commentDuncan P. N. Exon Smith2013-11-161-1/+1
| | | | llvm-svn: 194924
* gtest-death-test.cc: Move ~DeathTestFactory() to unbreak cygming build since ↵NAKAMURA Takumi2013-11-161-2/+2
| | | | | | r194865. llvm-svn: 194918
* Debug Info Verifier: remove un-used argument in verifyDebugInfo.Manman Ren2013-11-161-3/+3
| | | | | | No functionality change. llvm-svn: 194917
* X86: Encode the 'h' cpu subtype in the MachO header for x86.Jim Grosbach2013-11-163-8/+17
| | | | llvm-svn: 194906
* Mention address space related changes in release notes.Matt Arsenault2013-11-161-0/+7
| | | | llvm-svn: 194904
* Use correct size for address space in BasicAA.Matt Arsenault2013-11-163-4/+44
| | | | | | | | | | | | The tests just hit this with a different sized address space since I haven't figured out how to use this to break it. I thought I committed this a long time ago, and I'm not sure why missing this hasn't caused any problems. llvm-svn: 194903
* DwarfCompileUnit: Push type safety of DIDescriptor through ↵David Blaikie2013-11-162-5/+5
| | | | | | CompileUnit::createAndAddDIE. llvm-svn: 194902
* DwarfCompileUnit: Remove unnecessary OwningPtr<T>::get() callDavid Blaikie2013-11-161-1/+1
| | | | llvm-svn: 194901
* Small improvement to InstrinsicEmitter::EmitAttributes. This change removes ↵Owen Anderson2013-11-161-17/+38
| | | | | | | | the “pushing” and “clearing” of the SmallVector and instead uses const arrays to pass the attributeKinds to AttributeSet::get . Patch by Aditya Nandakumar. llvm-svn: 194899
* For dwarf4 use the correct form for referencing debug_loc locations,Eric Christopher2013-11-164-4/+6
| | | | | | | | | and update test cases accordingly. This doesn't affect the output dumped using llvm-dwarfdump, but readelf does now dump the debug_loc section. llvm-svn: 194898
* DwarfCompileUnit: Add type safety to CompileUnit::getNode by returning ↵David Blaikie2013-11-152-5/+4
| | | | | | DICompileUnit instead of a raw MDNode*. llvm-svn: 194895
* DwarfCompileUnit: Add type safety by using DICompileUnit rather than raw ↵David Blaikie2013-11-154-16/+16
| | | | | | MDNode* for the CU metadata node llvm-svn: 194893
* DwarfCompileUnit: Simplify getLanguage() calls to use existing member functionDavid Blaikie2013-11-151-3/+3
| | | | llvm-svn: 194892
* Implemented aarch64 Neon scalar vmulx_lane intrinsicsAna Pazos2013-11-155-16/+410
| | | | | | | | | | | | | | Implemented aarch64 Neon scalar vfma_lane intrinsics Implemented aarch64 Neon scalar vfms_lane intrinsics Implemented legacy vmul_n_f64, vmul_lane_f64, vmul_laneq_f64 intrinsics (v1f64 parameter type) using Neon scalar instructions. Implemented legacy vfma_lane_f64, vfms_lane_f64, vfma_laneq_f64, vfms_laneq_f64 intrinsics (v1f64 parameter type) using Neon scalar instructions. llvm-svn: 194888
* Replace the dangling context hotfix with an assertion.Adrian Prantl2013-11-151-4/+1
| | | | llvm-svn: 194883
* Remove unused arguments.Lang Hames2013-11-151-4/+2
| | | | llvm-svn: 194882
* During folding for patchpoint/stackmap instructions, defer creation of new MIsLang Hames2013-11-151-4/+5
| | | | | | | | until we know that folding will be successful. No functional change. llvm-svn: 194880
* DwarfDebug: Push DISubprogram through updateSubprogramScopeDIEDavid Blaikie2013-11-152-7/+5
| | | | llvm-svn: 194879
* LoopVectorizer: Use abi alignment for accesses with no alignmentArnold Schwaighofer2013-11-152-0/+37
| | | | | | | | | | | When we vectorize a scalar access with no alignment specified, we have to set the target's abi alignment of the scalar access on the vectorized access. Using the same alignment of zero would be wrong because most targets will have a bigger abi alignment for vector types. This probably fixes PR17878. llvm-svn: 194876
* DwarfCompileUnit: Push DIDescriptors through a getDIE/insertDIEDavid Blaikie2013-11-153-19/+20
| | | | llvm-svn: 194875
* Fix previous commit (r194865)Juergen Ributzka2013-11-151-0/+2
| | | | llvm-svn: 194874
* DwarfCompileUnit: Push DIDescriptor usage out from isShareableAcrossCUsDavid Blaikie2013-11-151-5/+5
| | | | | | | This is the first of a few similar patches. We'll see how far it goes/makes sense. llvm-svn: 194871
* Fix typos.Matt Arsenault2013-11-151-3/+3
| | | | | | | I somehow didn't notice before that the examples for addrspacecast use the wrong syntax for addrspace. llvm-svn: 194868
* [weak vtables] Remove a bunch of weak vtablesJuergen Ributzka2013-11-15115-152/+500
| | | | | | | | | | | This patch removes most of the trivial cases of weak vtables by pinning them to a single object file. Differential Revision: http://llvm-reviews.chandlerc.com/D2068 Reviewed by Andy llvm-svn: 194865
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