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2011-02-21Fix to correctly support attribute((section("__DATA, __common"))).Stuart Hastings
Radar 9012638. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126127 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-20Fix 9267; Add vector zext support.Nadav Rotem
The DAGCombiner folds the zext into complex load instructions. This patch prevents this optimization on vectors since none of the supported targets knows how to perform load+vector_zext in one instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126080 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Do not emit empty DW_TAG_lexical_block DIEs. In one test case, size of ↵Devang Patel
debug info reduced by almost 7%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126009 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Give SplitAnalysis a VRM member to access VirtRegMap::getOriginal().Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126005 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Missed member rename for naming convention.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126003 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19This method belonged in VirtRegMap.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126002 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Separate timers for local and global splitting.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126001 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Do not lose debug info of an inlined function argument even if the argument ↵Devang Patel
is only used through GEPs. This time with a fix that avoids using invalidated DenseMap iterator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125984 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Use VirtRegMap's Virt2SplitMap to keep track of the original live range ↵Jakob Stoklund Olesen
before splitting. All new virtual registers created for spilling or splitting point back to their original. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125980 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Move library stuff out of the toplevel CMakeLists.txt file.Oscar Fuentes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125968 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Add VirtRegMap::rewrite() and use it in the new register allocators.Jakob Stoklund Olesen
The rewriter works almost identically to -rewriter=trivial, except it also eliminates any identity copies. This makes the new register allocators independent of VirtRegRewriter.cpp which will be going away at the same time as RegAllocLinearScan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125967 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Reapply r114997 now that the buildbots have been updated.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125960 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost failure.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125830 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Trim debugging output.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125802 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Do not lose debug info of an inlined function argument even if the argument ↵Devang Patel
is only used through GEPs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125794 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Add basic register allocator statistics.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125789 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Split local live ranges.Jakob Stoklund Olesen
A local live range is live in a single basic block. If such a range fails to allocate, try to find a sub-range that would get a larger spill weight than its interference. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125764 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Fix wrong logic in promotion of signed mul-with-overflow (I pointed this out atDuncan Sands
the time but presumably my email got lost). Examples where the previous logic got it wrong: (1) a signed i8 multiply of 64 by 2 overflows, but the high part is zero; (2) a signed i8 multiple of -128 by 2 overflows, but the high part is all ones. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125748 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Switch to SmallVector in SimpleRegisterCoalescing for a 3.5% speedup on 403.gcc.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125728 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Adjust indenting of arguments.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125727 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Return Changed from SplitPHIEdges rather than always returning true.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125726 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16Swap VT and DebugLoc operands of getExtLoad() for consistency withStuart Hastings
other getNode() methods. Radar 9002173. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125665 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16Refactor zero folding slightly. Clean up todo.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125651 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16The change for PR9190 wasn't quite right. We need to avoid making theEric Christopher
transformation if we can't legally create a build vector of the correct type. Check that we can make the transformation first, and add a TODO to refactor this code with similar cases. Fixes: PR9223 and rdar://9000350 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125631 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16Remove a duplicated check.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125625 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Ignore DBG_VALUE machine instructions while constructing instruction ranges ↵Devang Patel
based on location info. Machine instruction range consisting of only DBG_VALUE MIs only contributes consecutive labels in assembly output, which is harmless, and empty scope entry in DebugInfo, which confuses debugger tools. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125577 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Spelling fix: consequtive -> consecutive.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125563 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Fix thinko. Cmp can be the first instruction in a MBB.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125552 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15convert ConstantVector::get to use ArrayRef.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125537 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Move more fragments of spill weight calculation into CalcSpillWeights.hJakob Stoklund Olesen
Simplify the spill weight calculation a bit by bypassing getApproximateInstructionCount() and using LiveInterval::getSize() directly. This changes the computed spill weights, but only by a constant factor in each function. It should not affect how spill weights compare against each other, and so it shouldn't affect code generation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125530 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Switch llvm to using comdats. For now always use groups with a singleRafael Espindola
section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125526 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Fix PR8854. Track inserted copies to avoid read before write. Sorry, it's ↵Evan Cheng
hard to reduce a sensible small test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125523 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14revert my ConstantVector patch, it seems to have made the llvm-gccChris Lattner
builders unhappy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125504 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Move broken HasCommonSymbols to ELFWriter.cpp.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125490 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Switch ConstantVector::get to use ArrayRef instead of a pointer+sizeChris Lattner
idiom. Change various clients to simplify their code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125487 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14fix PR9210 by implementing some type legalization logic for Chris Lattner
vector fp conversions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125482 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14fix two comment thinkosChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125481 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Add some statistics to StrongPHIElimination.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125477 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Add a statistic to PHIElimination tracking the number of critical edges split.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125476 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13Enhance ComputeMaskedBits to know that aligned frameindexesChris Lattner
have their low bits set to zero. This allows us to optimize out explicit stack alignment code like in stack-align.ll:test4 when it is redundant. Doing this causes the code generator to start turning FI+cst into FI|cst all over the place, which is general goodness (that is the canonical form) except that various pieces of the code generator don't handle OR aggressively. Fix this by introducing a new SelectionDAG::isBaseWithConstantOffset predicate, and using it in places that are looking for ADD(X,CST). The ARM backend in particular was missing a lot of addressing mode folding opportunities around OR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125470 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13Revisit my fix for PR9028: the issue is that DAGCombine was Chris Lattner
generating i8 shift amounts for things like i1024 types. Add an assert in getNode to prevent this from occuring in the future, fix the buggy transformation, revert my previous patch, and document this gotcha in ISDOpcodes.h git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125465 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13when legalizing extremely wide shifts, make sure that Chris Lattner
the shift amounts are in a suitably wide type so that we don't generate out of range constant shift amounts. This fixes PR9028. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125458 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13fix visitShift to properly zero extend the shift amount if the provided operandChris Lattner
is narrower than the shift register. Doing an anyext provides undefined bits in the top part of the register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125457 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12A fix for 9165.Nadav Rotem
The DAGCombiner created illegal BUILD_VECTOR operations. The patch added a check that either illegal operations are allowed or that the created operation is legal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11SimplifySelectOps can only handle selects with a scalar condition. Add a checkNadav Rotem
that the condition is not a vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125398 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11Fix #9190Nadav Rotem
The bug happens when the DAGCombiner attempts to optimize one of the patterns of the SUB opcode. It tries to create a zero of type v2i64. This type is legal on 32bit machines, but the initializer of this vector (i64) is target dependent. Currently, the initializer attempts to create an i64 zero constant, which fails. Added a flag to tell the DAGCombiner to create a legal zero, if we require that the pass would generate legal types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125391 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-10After 3-addressifying a two-address instruction, update the register maps; ↵Evan Cheng
add a missing check when considering whether it's profitable to commute. rdar://8977508. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125259 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Delete unused code for analyzing and splitting around loops.Jakob Stoklund Olesen
Loop splitting is better handled by the more generic global region splitting based on the edge bundle graph. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125243 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Simplify using the new leaveIntvBefore()Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125238 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Use the LiveBLocks array for SplitEditor::splitSingleBlocks() as well.Jakob Stoklund Olesen
This fixes a bug where splitSingleBlocks() could split a live range after a terminator instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125237 91177308-0d34-0410-b5e6-96231b3b80d8
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