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2011-11-29Fix issues in shuffle decoding around VPERM* instructions. Fix shuffle ↵Craig Topper
decoding for VSHUFPS/D for 256-bit types. Add pattern matching for memory forms of VPERMILPS/VPERMILPD. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145390 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Fix VINSERTF128/VEXTRACTF128 to be marked as FP instructions. Allow ↵Craig Topper
execution dependency fix pass to convert them to their integer equivalents when AVX2 is enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145376 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Correctly mark VPERM2F128 as being an FP instruction and add execution ↵Craig Topper
domain fixing support to convert it to VPERM2I128 for AVX2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145370 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29SCEV fix. In general, Add/Mul expressions should not inherit NSW/NUW.Andrew Trick
This reverts r139450, fixes r139453, and adds much needed comments and a unit test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145367 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Filecheckize.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145363 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29Reenable this IndVars unit test.Andrew Trick
SCEV can't optimize undef in all cases, which is a separate issue from this test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145343 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28Add a missing safety check to ProcessUGT_ADDCST_ADD. Fixes PR11438.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145316 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28Make SelectionDAG::InferPtrAlignment use llvm::ComputeMaskedBits instead of ↵Eli Friedman
duplicating the logic for globals. Make llvm::ComputeMaskedBits handle GlobalVariables slightly more aggressively, to match what InferPtrAlignment knew how to do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145304 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28Revert r145273 and fix in SelectionDAG::InferPtrAlignment() instead.Evan Cheng
Conservatively returns zero when the GV does not specify an alignment nor is it initialized. Previously it returns ABI alignment for type of the GV. However, if the type is a "packed" type, then the under-specified alignments is attached to the load / store instructions. In that case, the alignment of the type cannot be trusted. rdar://10464621 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145300 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28DAG combine should not increase alignment of loads / stores with alignment lessEvan Cheng
than ABI alignment. These are loads / stores from / to "packed" data structures. Their alignments are intentionally under-specified. rdar://10301431 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145273 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28Add X86 instruction selection for VPERM2I128 when AVX2 is enabled. Merge ↵Craig Topper
VPERMILPS/VPERMILPD detection since they are pretty similar. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145238 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28test/lit.cfg: Enable the feature 'asserts' to check output of llc -version.NAKAMURA Takumi
llc knows whether he is compiled with -DNDEBUG. | Optimized build with assertions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145230 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27remove a test that is using old-style llvm.dbg intrinsics, apparently onlyChris Lattner
fails on ppc and arm hosts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145188 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27Take two on rotating the block ordering of loops. My previous attemptChandler Carruth
was centered around the premise of laying out a loop in a chain, and then rotating that chain. This is good for preserving contiguous layout, but bad for actually making sane rotations. In order to keep it safe, I had to essentially make it impossible to rotate deeply nested loops. The information needed to correctly reason about a deeply nested loop is actually available -- *before* we layout the loop. We know the inner loops are already fused into chains, etc. We lose information the moment we actually lay out the loop. The solution was the other alternative for this algorithm I discussed with Benjamin and some others: rather than rotating the loop after-the-fact, try to pick a profitable starting block for the loop's layout, and then use our existing layout logic. I was worried about the complexity of this "pick" step, but it turns out such complexity is needed to handle all the important cases I keep teasing out of benchmarks. This is, I'm afraid, a bit of a work-in-progress. It is still misbehaving on some likely important cases I'm investigating in Olden. It also isn't really tested. I'm going to try to craft some interesting nested-loop test cases, but it's likely to be extremely time consuming and I don't want to go there until I'm sure I'm testing the correct behavior. Sadly I can't come up with a way of getting simple, fine grained test cases for this logic. We need complex loop structures to even trigger much of it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145183 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27Rework a bit of the implementation of loop block rotation to not rely soChandler Carruth
heavily on AnalyzeBranch. That routine doesn't behave as we want given that rotation occurs mid-way through re-ordering the function. Instead merely check that there are not unanalyzable branching constructs present, and then reason about the CFG via successor lists. This actually simplifies my mental model for all of this as well. The concrete result is that we now will rotate more loop chains. I've added a test case from Olden highlighting the effect. There is still a bit more to do here though in order to regain all of the performance in Olden. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145179 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27remove autoupgrade support for old forms of llvm.prefetch and the oldChris Lattner
trampoline forms. Both of these were correct in LLVM 3.0, and we don't need to support LLVM 2.9 and earlier in mainline. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145174 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27Upgrade syntax of tests using volatile instructions to use 'load volatile' ↵Chris Lattner
instead of 'volatile load', which is archaic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145171 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27remove autoupgrade support for really old-style debug info intrinsics.Chris Lattner
I think this is the last of autoupgrade that can be removed in 3.1. Can the atomic upgrade stuff also go? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145169 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27remove some old autoupgrade logicChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145167 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27remove support for reading llvm 2.9 .bc files. LLVM 3.1 is only compatible ↵Chris Lattner
back to 3.0 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145164 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27Add several new instructions supported by the latest MicroBlaze.Wesley Peck
These instructions are not generated by the backend yet, this will come in a later commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145161 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27Introduce a loop block rotation optimization to the new block placementChandler Carruth
pass. This is designed to achieve one of the important optimizations that the old code placement pass did, but more simply. This is a somewhat rough and *very* conservative version of the transform. We could get a lot fancier here if there are profitable cases to do so. In particular, this only looks for a single pattern, it insists that the loop backedge being rotated away is the last backedge in the chain, and it doesn't provide any means of doing better in-loop placement due to the rotation. However, it appears that it will handle the important loops I am finding in the LLVM test suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145158 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-26FileCheck-ize this test and make it more precise. This is in preparationChandler Carruth
for adding other tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145143 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-26Fix APFloat::convert so that it handles narrowing conversions correctly; itEli Friedman
was returning incorrect values in rare cases, and incorrectly marking exact conversions as inexact in some more common cases. Fixes PR11406, and a missed optimization in test/CodeGen/X86/fp-stack-O0.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145141 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-25This patch contains support for encoding FMA4 instructions andBruno Cardoso Lopes
tablegen patterns for scalar FMA4 operations and intrinsic. Also add tests for vfmaddsd. Patch by Jan Sjodin git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145133 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-24Remove 256-bit specific node types for UNPCKHPS/D and instead use the ↵Craig Topper
128-bit versions and let the operand type disinquish. Also fix the load form of the v8i32 patterns for these to realize that the load would be promoted to v4i64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145126 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-24X86: alias cqo to cqto.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145121 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-24Fix a silly use-after-free issue. A much earlier version of this codeChandler Carruth
need lots of fanciness around retaining a reference to a Chain's slot in the BlockToChain map, but that's all gone now. We can just go directly to allocating the new chain (which will update the mapping for us) and using it. Somewhat gross mechanically generated test case replicates the issue Duncan spotted when actually testing this out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145120 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-24When adding blocks to the list of those which no longer have any CFGChandler Carruth
conflicts, we should only be adding the first block of the chain to the list, lest we try to merge into the middle of that chain. Most of the places we were doing this we already happened to be looking at the first block, but there is no reason to assume that, and in some cases it was clearly wrong. I've added a couple of tests here. One already worked, but I like having an explicit test for it. The other is reduced from a test case Duncan reduced for me and used to crash. Now it is handled correctly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145119 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Correctly byte-swap APInts with bit-widths greater than 64.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145111 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Fix a crash in which a multiplication was being reported as being both negativeDuncan Sands
and positive: positive, because it could be directly computed to be positive; negative, because the nsw flags means it is either negative or undefined (the multiplication always overflowed). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145104 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23X86: Use btq for bit tests if the immediate can't be encoded in 32 bits.Benjamin Kramer
Before: movabsq $4294967296, %rax ## encoding: [0x48,0xb8,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00] testq %rax, %rdi ## encoding: [0x48,0x85,0xf8] jne LBB0_2 ## encoding: [0x75,A] After: btq $32, %rdi ## encoding: [0x48,0x0f,0xba,0xe7,0x20] jb LBB0_2 ## encoding: [0x72,A] btq is usually slower than testq because it doesn't fuse with the jump, but here we're better off saving one register and a giant movabsq. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145103 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23test/CodeGen/X86/block-placement.ll: Add explicit -mtriple=i686-linux. X86 ↵NAKAMURA Takumi
Win32 CodeGen does not support EH yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145101 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Relax an invariant that block placement was trying to assert a bitChandler Carruth
further. This invariant just wasn't going to work in the face of unanalyzable branches; we need to be resillient to the phenomenon of chains poking into a loop and poking out of a loop. In fact, we already were, we just needed to not assert on it. This was found during a bootstrap with block placement turned on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23I added several lines in X86 code generator that allow to choose Elena Demikhovsky
VSHUFPS/VSHUFPD instructions while lowering VECTOR_SHUFFLE node. I check a commuted VSHUFP mask. The patch was reviewed by Bruno. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145099 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Handle the case of a no-return invoke correctly. It actually still hasChandler Carruth
successors, they just are all landing pad successors. We handle this the same way as no successors. Comments attached for the next person to wade through here and another lovely test case courtesy of Benjamin Kramer's bugpoint reduction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145098 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Enable stack protectors for all arrays, not just char arrays. rdar://5875909Bob Wilson
Patch by Bill Wendling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145097 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Fix PR11422.Jakob Stoklund Olesen
This was a bug in keeping track of the available domains when merging domain values. The wrong domain mask caused ExecutionDepsFix to try to move VANDPSYrr to the integer domain which is only available in AVX2. Also add an assertion to catch future attempts at emitting AVX2 instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145096 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23Fix a crash in block placement due to an inner loop that happened to beChandler Carruth
reversed in the function's original ordering, and we happened to encounter it while handling an outer unnatural CFG structure. Thanks to the test case reduced from GCC's source by Benjamin Kramer. This may also fix a crasher in gzip that Duncan reduced for me, but I haven't yet gotten to testing that one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145094 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23[asan] do not instrument threadlocal globals, this is buggyKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22add basic PPC register-pressure feedback; adjust the vaarg test to match the ↵Hal Finkel
new register-allocation pattern git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145065 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Fix a devilish miscompile exposed by block placement. TheChandler Carruth
updateTerminator code didn't correctly handle EH terminators in one very specific case. AnalyzeBranch would find no terminator instruction, and so the fallback in updateTerminator is to assume fallthrough. This is correct, but the destination of the fallthrough was assumed to be the first successor. This is *almost always* true, but in certain cases the loop transformations will cause the landing pad to be the first successor! Instead of this brittle logic, actually look through the successors for a non-landing-pad accessor, and to assert if more than one is found. This will hopefully fix some (if not all) of the self host miscompiles with block placement. Thanks to Benjamin Kramer for reporting, Nick Lewycky for an initial stab at a reduction, and Duncan for endless advice on EH (which I know nothing about) as well as reviewing the actual fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145062 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Add triple to the test.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145057 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22If a register is both an early clobber and part of a tied use, handle the useRafael Espindola
before the clobber so that we copy the value if needed. Fixes pr11415. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145056 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-21Fix crasher in GVN due to my recent capture tracking changes.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145047 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-21Lowering for v32i8 to VPUNPCKLBW/VPUNPCKHBW when AVX2 is enabled.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145028 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-21Test case for r145026Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145027 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-21Make LowerSIGN_EXTEND_INREG split 256-bit vectors when AVX1 is enabled and ↵Craig Topper
use AVX2 shifts when AVX2 is enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145022 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20test/CodeGen/X86/block-placement.ll: Relax expressions for Win32.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145011 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20The logic for breaking the CFG in the presence of hot successors didn'tChandler Carruth
properly account for the *global* probability of the edge being taken. This manifested as a very large number of unconditional branches to blocks being merged against the CFG even though they weren't particularly hot within the CFG. The fix is to check whether the edge being merged is both locally hot relative to other successors for the source block, and globally hot compared to other (unmerged) predecessors of the destination block. This introduces a new crasher on GCC single-source, but it's currently behind a flag, and Ben has offered to work on the reduction. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145010 91177308-0d34-0410-b5e6-96231b3b80d8
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