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2011-11-14ARM VLDR/VSTR instructions don't need a size suffix.Jim Grosbach
Canonicallize on the non-suffixed form, but continue to accept assembly that has any correctly sized type suffix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144583 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Refactor capture tracking (which already had a couple flags for whether returnsNick Lewycky
and stores capture) to permit the caller to see each capture point and decide whether to continue looking. Use this inside memdep to do an analysis that basicaa won't do. This lets us solve another devirtualization case, fixing PR8908! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144580 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add newline to end of file. Thanks, Eli.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144579 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add support for inlining small memcpys.Chad Rosier
rdar://10412592 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144578 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Fix a performance regression from r144565. Positive offsets were being loweredChad Rosier
into registers, rather then encoded directly in the load/store. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144576 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14ARM assembly parsing type suffix options for VLDR/VSTR.Jim Grosbach
rdar://10435076 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144575 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Fix Windows build, don't try to #include <pthread.h> when we know it's notNick Lewycky
available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144574 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Avoid dereferencing off the beginning of lists.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144569 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14At -O0, multiple uses of a virtual registers in the same BB are being markedEvan Cheng
"kill". This looks like a bug upstream. Since that's going to take some time to understand, loosen the assertion and disable the optimization when multiple kills are seen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144568 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add support for tsan annotations (thread sanitizer, a valgrind-based tool).Nick Lewycky
These annotations are disabled entirely when either ENABLE_THREADS is off, or building a release build. When enabled, they add calls to functions with no statements to ManagedStatic's getters. Use these annotations to inform tsan that the race used inside ManagedStatic initialization is actually benign. Thanks to Kostya Serebryany for helping write this patch! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144567 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add a missing pattern for X86ISD::MOVLPD. rdar://10436044Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144566 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add support for Thumb load/stores with negative offsets.Chad Rosier
rdar://10412592 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144565 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Unbreak Release builds.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144560 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Teach two-address pass to re-schedule two-address instructions (or the killEvan Cheng
instructions of the two-address operands) in order to avoid inserting copies. This fixes the few regressions introduced when the two-address hack was disabled (without regressing the improvements). rdar://10422688 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144559 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Changed SSE4/AVX <2 x i64> extract and insert ops to be Custom loweredPete Cooper
Constant idx case is still done in tablegen but other cases are then expanded Fixes <rdar://problem/10435460> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144557 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Fold ConstantVector::isAllOnesValue into Constant::isAllOnesValue and ↵Benjamin Kramer
simplify it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144555 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-1432-to-64-bit extended load.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144554 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14AnalyzeCallOperands function for N32/64.Akira Hatanaka
N32/64 places all variable arguments in integer registers (or on stack), regardless of their types, but follows calling convention of non-vaarg function when it handles fixed arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144553 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Modify LowerFormalArguments to correctly handle vaarg arguments for Mips64.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144552 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14PTX: Let LLVM use loads/stores for all mem* intrinsics, instead of relying ↵Justin Holewinski
on custom implementations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144551 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add release notes for the MicroBlaze backend.Wesley Peck
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144550 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Remove variable that keeps the size of area used to save byval or variableAkira Hatanaka
argument registers on the callee's stack frame, along with functions that set and get it. It is not necessary to add the size of this area when computing stack size in emitPrologue, since it has already been accounted for in PEI::calculateFrameObjectOffsets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144549 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Fix early-clobber handling in shrinkToUses.Jakob Stoklund Olesen
I broke this in r144515, it affected most ARM testers. <rdar://problem/10441389> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144547 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Disable generation of compact unwind encodings. <rdar://problem/10441578>Bob Wilson
This still seems to be causing some failures. It needs more testing before it gets enabled again. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144543 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Delete stale comment.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144542 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Tidy up. 80 column.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Make headers standalone.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144537 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Make headers standalone, move a virtual method out of line.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144536 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14build/Make: Switch over to using llvm-config-2 for dependencies one more ↵Daniel Dunbar
(hopefully last) time, now that it also builds as a build tool. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144535 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14It helps to deallocate memory as well as allocate it. =] This actuallyChandler Carruth
cleans up all the chains allocated during the processing of each function so that for very large inputs we don't just grow memory usage without bound. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144533 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Remove an over-eager assert that was firing on one of the ARM regressionChandler Carruth
tests when I forcibly enabled block placement. It is apparantly possible for an unanalyzable block to fallthrough to a non-loop block. I don't actually beleive this is correct, I believe that 'canFallThrough' is returning true needlessly for the code construct, and I've left a bit of a FIXME on the verification code to try to track down why this is coming up. Anyways, removing the assert doesn't degrade the correctness of the algorithm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144532 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Begin chipping away at one of the biggest quadratic-ish behaviors inChandler Carruth
this pass. We're leaving already merged blocks on the worklist, and scanning them again and again only to determine each time through that indeed they aren't viable. We can instead remove them once we're going to have to scan the worklist. This is the easy way to implement removing them. If this remains on the profile (as I somewhat suspect it will), we can get a lot more clever here, as the worklist's order is essentially irrelevant. We can use swapping and fold the two loops to reduce overhead even when there are many blocks on the worklist but only a few of them are removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144531 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Under the hood, MBPI is doing a linear scan of every successor everyChandler Carruth
time it is queried to compute the probability of a single successor. This makes computing the probability of every successor of a block in sequence... really really slow. ;] This switches to a linear walk of the successors rather than a quadratic one. One of several quadratic behaviors slowing this pass down. I'm not really thrilled with moving the sum code into the public interface of MBPI, but I don't (at the moment) have ideas for a better interface. My direction I'm thinking in for a better interface is to have MBPI actually retain much more state and make *all* of these queries cheap. That's a lot of work, and would require invasive changes. Until then, this seems like the least bad (ie, least quadratic) solution. Suggestions welcome. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144530 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add clang_complete to release notesTobias Grosser
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144529 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add Polly to release notesTobias Grosser
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144528 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Reuse the logic in getEdgeProbability within getHotSucc in order toChandler Carruth
correctly handle blocks whose successor weights sum to more than UINT32_MAX. This is slightly less efficient, but the entire thing is already linear on the number of successors. Calling it within any hot routine is a mistake, and indeed no one is calling it. It also simplifies the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144527 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Fix an overflow bug in MachineBranchProbabilityInfo. This pass relied onChandler Carruth
the sum of the edge weights not overflowing uint32, and crashed when they did. This is generally safe as BranchProbabilityInfo tries to provide this guarantee. However, the CFG can get modified during codegen in a way that grows the *sum* of the edge weights. This doesn't seem unreasonable (imagine just adding more blocks all with the default weight of 16), but it is hard to come up with a case that actually triggers 32-bit overflow. Fortuately, the single-source GCC build is good at this. The solution isn't very pretty, but its no worse than the previous code. We're already summing all of the edge weights on each query, we can sum them, check for an overflow, compute a scale, and sum them again. I've included a *greatly* reduced test case out of the GCC source that triggers it. It's a pretty lame test, as it clearly is just barely triggering the overflow. I'd like to have something that is much more definitive, but I don't understand the fundamental pattern that triggers an explosion in the edge weight sums. The buggy code is duplicated within this file. I'll colapse them into a single implementation in a subsequent commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144526 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add AVX2 version of instructions to load folding tables. Also add a bunch of ↵Craig Topper
missing SSE/AVX instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144525 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add a cautionary note to this API. It was not at all obvious to me howChandler Carruth
expensive the most useful interface to this analysis is. Fun story -- it's also not correct. That's getting fixed in another patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144523 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add neverHasSideEffects, mayLoad, and mayStore to many patternless SSE/AVX ↵Craig Topper
instructions. Remove MMX check from LowerVECTOR_SHUFFLE since MMX vector types won't go through it anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144522 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Add support for ARM halfword load/stores and signed byte loads with negativeChad Rosier
offsets. rdar://10412592 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144518 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Use getVNInfoBefore() when it makes sense.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144517 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Teach machine block placement to cope with unnatural loops. These don'tChandler Carruth
get loop info structures associated with them, and so we need some way to make forward progress selecting and placing basic blocks. The technique used here is pretty brutal -- it just scans the list of blocks looking for the first unplaced candidate. It keeps placing blocks like this until the CFG becomes tractable. The cost is somewhat unfortunate, it requires allocating a vector of all basic block pointers eagerly. I have some ideas about how to simplify and optimize this, but I'm trying to get the logic correct first. Thanks to Benjamin Kramer for the reduced test case out of GCC. Sadly there are other bugs that GCC is tickling that I'm reducing and working on now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144516 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Use kill slots instead of the previous slot in shrinkToUses.Jakob Stoklund Olesen
It's more natural to use the actual end points. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144515 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Cleanup some 80-columns violations and poor formatting. These snuck byChandler Carruth
when I was reading through the code for style. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144513 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Terminate all dead defs at the dead slot instead of the 'next' slot.Jakob Stoklund Olesen
This makes no difference for normal defs, but early clobber dead defs now look like: [Slot_EarlyClobber; Slot_Dead) instead of: [Slot_EarlyClobber; Slot_Register). Live ranges for normal dead defs look like: [Slot_Register; Slot_Dead) as before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144512 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Fix comment for LegalizeTypeAction enum.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144511 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Simplify early clobber slots a bit.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144507 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Enhance the assertion mechanisms in place to make it easier to catchChandler Carruth
when we fail to place all the blocks of a loop. Currently this is happening for unnatural loops, and this logic helps more immediately point to the problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144504 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Rename SlotIndexes to match how they are used.Jakob Stoklund Olesen
The old naming scheme (load/use/def/store) can be traced back to an old linear scan article, but the names don't match how slots are actually used. The load and store slots are not needed after the deferred spill code insertion framework was deleted. The use and def slots don't make any sense because we are using half-open intervals as is customary in C code, but the names suggest closed intervals. In reality, these slots were used to distinguish early-clobber defs from normal defs. The new naming scheme also has 4 slots, but the names match how the slots are really used. This is a purely mechanical renaming, but some of the code makes a lot more sense now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144503 91177308-0d34-0410-b5e6-96231b3b80d8
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