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2012-04-26Add note about returns_twice magic removal from LLVM itself.Joerg Sonnenberger
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155657 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Trivial change to set UseLeaForSP flag in addition to togglingPreston Gurd
the FeatureLeaForSP feature bit when llvm auto detects Intel Atom. Patch by Andy Zhang git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155655 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26[CMake] Restructure how Clang, Polly and other external projects get included.Michael J. Spencer
While making lld build under the tools directory I decided to refactor how this works. There is now a macro, add_llvm_external_project, which takes the name of the expected subdirectory. This sets up two CMake options. * LLVM_EXTERNAL_${NAME}_SOURCE_DIR This is the path to the source. It defaults to ${CMAKE_CURRENT_SOURCE_DIR}/${name}. * LLVM_EXTERNAL_${NAME}_BUILD Enable and disable building the tool as part of LLVM. I chose LLVM_EXTERNAL_${NAME} as a prefix so they all show up together in the GUI. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155654 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26[Support/YAML] Properly fix unitialized variable warning by inserting aMichael J. Spencer
'REPLACEMENT CHARACTER' (U+FFFD) when getAsInteger fails. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155653 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Fixed SmallMap test. The order of items is undefined in DenseMap. So being ↵Stepan Dyatkovskiy
checking the increment for big mode, we can only check that all items are in map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155651 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Use VLD1 in NEON extenting-load patterns instead of VLDR.Tim Northover
On some cores it's a bad idea for performance to mix VFP and NEON instructions and since these patterns are NEON anyway, the NEON load should be used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155630 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Test commit.Tim Northover
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155626 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Enable detection of AVX and AVX2 support through CPUID. Add AVX/AVX2 to ↵Craig Topper
corei7-avx, core-avx-i, and core-avx2 cpu names. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155618 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Teach the reassociate pass to fold chains of multiplies with repeatedChandler Carruth
elements to minimize the number of multiplies required to compute the final result. This uses a heuristic to attempt to form near-optimal binary exponentiation-style multiply chains. While there are some cases it misses, it seems to at least a decent job on a very diverse range of inputs. Initial benchmarks show no interesting regressions, and an 8% improvement on SPASS. Let me know if any other interesting results (in either direction) crop up! Credit to Richard Smith for the core algorithm, and helping code the patch itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155616 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Specify cpu to unbreak tests.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155604 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26If triple is armv7 / thumbv7 and a CPU is specified, do not automatically assumeEvan Cheng
the feature set of v7a. This comes about if the user specifies something like -arch armv7 -mcpu=cortex-m3. We shouldn't be generating instructions such as uxtab in this case. rdar://11318438 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155601 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-26Don't forget to reset 'first operand' flag when we're setting the ↵Bill Wendling
MDNodeOperand value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155599 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Try to fix llvm-arm-linux builder with -mcpu.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155589 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Trivial change to make the test use -mcpu=generic so as to avoidPreston Gurd
a failure if run on an Intel Atom with post RA instruction scheduling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155587 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Reapply the SmallMap patch with a fix.Benjamin Kramer
Comparing ~0UL with an unsigned will always return false when long is 64 bits long. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155568 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Print IV chain numbers while collecting them.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Remove more dead code.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155566 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Unify internal representation of ARM instructions with a register ↵Richard Barton
right-shifted by #32. These are stored as shifts by #0 in the MCInst and correctly marshalled when transforming from or to assembly representation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155565 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Revert "First implementation of:"Eric Christopher
This reverts commit 76271a3366731d4c372fdebcd8d3437e6e09a61b. as it's breaking the bots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155562 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25First implementation of:Stepan Dyatkovskiy
- FlatArrayMap. Very simple map container that uses flat array inside. - MultiImplMap. Map container interface, that has two modes, one for small amount of elements and one for big amount. - SmallMap. SmallMap is DenseMap compatible MultiImplMap. It uses FlatArrayMap for small mode, and DenseMap for big mode. Also added unittests for new classes and update for ProgrammersManual. For more details about new classes see ProgrammersManual and comments in sourcecode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155557 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Simplify LiveIntervals::getApproximateInstructionCount().Jakob Stoklund Olesen
This function is only used for a heuristic during -join-physregs. It doesn't need floating point. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155554 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Remove a dead function.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155553 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Remove the -disable-cross-class-join option.Jakob Stoklund Olesen
Cross-class joins have been normal and fully supported for a while now. With TableGen generating the getMatchingSuperRegClass() hook, they are unlikely to cause problems again. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155552 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Cross-class joining is winning.Jakob Stoklund Olesen
Remove the heuristic for disabling cross-class joins. The greedy register allocator can handle the narrow register classes, and when it splits a live range, it can pick a larger register class. Benchmarks were unaffected by this change. <rdar://problem/11302212> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155551 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Add ifdef around getSubtargetFeatureName in tablegen output file so that ↵Craig Topper
only targets that want the function get it. This prevents other targets from getting an unused function warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155538 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Use vector_shuffles instead of target specific unpack nodes for AVX ↵Craig Topper
ZERO_EXTEND/ANY_EXTEND combine. These will be converted to target specific nodes during lowering. This is more consistent with other code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155537 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25openbsd doesn't support soname, patch by Brad Smith!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155536 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Actually delete now-empty file.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155532 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Reverting r155468. Chris and Chandler have convinced me that it's dangerous andLang Hames
in poor taste. Talking through some alternate solutions with Chandler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155530 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Do not use $gp as a dedicated global register if the target ABI is not O32. Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155522 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25typo in declaration from earlier todayAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155519 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25Simplify the known retain count tracking; use a boolean state insteadDan Gohman
of a precise count. Also, move RRInfo's Partial field into PtrState, now that it won't increase the size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155513 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Build custom predecessor and successor lists for each basic block.Dan Gohman
These lists exclude invoke unwind edges and loop backedges which are being ignored. This makes it easier to ignore them consistently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155500 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24ARM: improved assembler diagnostics for missing CPU features.Jim Grosbach
When an instruction match is found, but the subtarget features it requires are not available (missing floating point unit, or thumb vs arm mode, for example), issue a diagnostic that identifies what the feature mismatch is. rdar://11257547 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155499 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Fix a naughty header include that breaks "installed" builds.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155486 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24ConstantFoldSelectInstruction swapped the operands of the select.Nadav Rotem
Fix 12592. Patch by Matt Pharr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155480 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Fix the testcase. We do expect two vblendw on XMMs.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155477 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Add a testcase for 155440Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155475 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24MachineBasicBlock::SplitCriticalEdge() should follow LLVM IR variant and ↵Evan Cheng
refuse to break edge to EH landing pad. rdar://11300144 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155470 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Add support for llvm.arm.neon.vmull* intrinsics to InstCombine. This fixesLang Hames
<rdar://problem/11291436>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155468 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Fix a crash on valid (if UB) bitcode that is produced for some globalChandler Carruth
constants in C++11 mode. I have no idea why it required such particular circumstances to get here, the code seems clearly to rely upon unchecked assumptions. Specifically, when we decide to form an index into a struct type, we may have gone through (at least one) zero-length array indexing round, which would have left the offset un-adjusted, and thus not necessarily valid for use when indexing the struct type. This is just an canonicalization step, so the correct thing is to refuse to canonicalize nonsensical GEPs of this form. Implemented, and test case added. Fixes PR12642. Pair debugged and coded with Richard Smith. =] I credit him with most of the debugging, and preventing me from writing the wrong code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155466 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24ARM: Nuke remnant bogus code.Jim Grosbach
r154362 was supposed to delete this bit, but obviously didn't. rdar://11305594 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155465 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24Related to PR1255. Let's begin. I'll commit classes that corresponds to our ↵Stepan Dyatkovskiy
latest PR1255 discussion posts in llvm-commits. Strategy. 0. Implement new classes. Classes doesn't affect anything. They still work with ConstantInt base values at this stage. 1. Fictitious replacement of current ConstantInt case values with ConstantRangesSet. Case ranges set will still hold single value, and ConstantInt *getCaseValue() will return it. But additionally implement new method in SwitchInst that allows to work with case ranges. Currenly I think it should be some wrapper that returns either single value or ConstantRangesSet object. 2. Step-by-step replacement of old "ConstantInt* getCaseValue()" with new alternative. Modify algorithms for all passes that works with SwitchInst. But don't modify LLParser and BitcodeReader/Writer. Still hold single value in each ConstantRangesSet object. On this stage some parts of LLVM will use old-style methods, and some ones new-style. 3. After all getCaseValue() usages will removed and whole LLVM and its clients will work in new style - modify LLParser, Reader and Writer. Remove getCaseValue(). 4. Replace ConstantInt*-based case ranges set items with APInt ones. Currently we are on Zero Stage: New classes. ConstantRangesSet. I selected ConstantArrays as case ranges set "holder" object (it is a temporary decision, I'll explain why below). The array items are may be ConstantVectors with single item, and ConstantVectors with two items (that means single number and range respectively). The ConstantInt will used as basic value representation. It will replaced with APInt then. Of course ConstantArray and ConstantVector will go away after ConstantInt => APInt replacement. New class mandatory features: - bool isSatisfies(ConstantInt *V) method (need better name?). Returns true if the given value satisfies this case. - Case's ranges and values enumeration. In some passes we need to analize each case (SwitchLowering for example). Factory + unified clusterify. I also propose to implement the factory that allows to build case object with user friendly way. I called it CRSBuilder by now. Currenly I implemented the factory that allows add,remove pairs of range+successor. It also allows add existing ConstantRangesSet decompiling it to separated ranges. Factory can emit either clusters set (single case range + successor) or the set of "ConstantRangesSet + Successor" pairs. So you can use it either as builder for new cases set for SwitchInst, or for clusterification of existing cases set. Just call Factory.optimize() and it emits optimized and sorted clusters collection for you! I tested clusterification on SelectionDAGBuilder - it works fine. Don't worry it was not included in this patch. Just new classes. Factory is a template. There are two params: SuccessorClass and IsReadonly. So you can specify what successor you need (BB or MBB). And you can also restrict your factory to use values in read-only mode (SelectionDAGBuilder need IsReadonly=true). Read-only factory couldn't build the cases ranges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155464 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24AVX: Add additional vbroadcast replacement sequences for integers.Nadav Rotem
Remove the v2f64 patterns because it does not match any vbroadcast instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155461 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24cmake: new fileAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155460 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24misched: DAG builder must special case earlyclobberAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155459 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24misched: try (not too hard) to place debug values where they belongAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155458 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24misched: ignore debug values during schedulingAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155457 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24misched: DAG builder support for tracking register pressure within the ↵Andrew Trick
current scheduling region. The DAG builder is a convenient place to do it. Hopefully this is more efficient than a separate traversal over the same region. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155456 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24RegisterPressure: A utility for computing register pressure within aAndrew Trick
MachineInstr sequence. This uses the new target interface for tracking register pressure using pressure sets to model overlapping register classes and subregisters. RegisterPressure results can be tracked incrementally or stored at region boundaries. Global register pressure can be deduced from local RegisterPressure results if desired. This is an early, somewhat untested implementation. I'm working on testing it within the context of a register pressure reducing MachineScheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155454 91177308-0d34-0410-b5e6-96231b3b80d8
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