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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
2011-11-23This patch makes the following changes necessary for MIPS' direct code emission.Akira Hatanaka
- lower unaligned loads/stores. - encode the size operand of instructions INS and EXT. - emit relocation information needed for JAL (jump-and-link). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145113 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23This patch addresses gp relative fixups/relocations for jump tables.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145112 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
2011-11-23Validate the return type when checking if a function is malloc.Benjamin Kramer
Fixes PR11426. Not sure if a test case with a "wrong" malloc would be useful. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145106 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
2011-11-23Relax 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
2011-11-22More fixes to the X86InstComments for shuffle instructions. In particular ↵Craig Topper
add AVX flavors of many instructions and fix the destination operand for some of the existing AVX entries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145063 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 configure checking for pread(2) and use it to save a syscall when ↵Benjamin Kramer
reading files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145061 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Fix an obvious omission in the SelectionDAGBuilder where we wereChandler Carruth
dropping weights on the floor for invokes. This was impeding my writing further test cases for invoke when interacting with probabilities and block placement. No test case as there doesn't appear to be a way to test this stuff. =/ Suggestions for a test case of course welcome. I hope to be able to add test cases that indirectly cover this eventually by adding probabilities to the exceptional edge and reordering blocks as a result. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145060 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Turn error recovery into an assert.Benjamin Kramer
This was put in because in a certain version of DragonFlyBSD stat(2) lied about the size of some files. This was fixed a long time ago so we can remove the workaround. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145059 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
2011-11-22Fix shuffle decoding logic to handle UNPCKLPS/UNPCKLPD on 256-bit vectors ↵Craig Topper
correctly. Add support for decoding UNPCKHPS/UNPCKHPD for AVX 128-bit and 256-bit forms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145055 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Add methods for querying minimum SSE version along with AVX. Simplifies all ↵Craig Topper
the places that had to check a version of SSE and AVX. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145053 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
2011-11-21Add virtual destructor. Whoops!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145044 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
2011-11-21Add support for lowering 256-bit shuffles to VPUNPCKL/H for i16, i32, i64 if ↵Craig Topper
AVX2 is enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145026 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-21Fixing a commentJoe Abbey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145025 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
2011-11-20Less template, more virtual! Refactoring suggested by Chris in code review.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145014 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20Refactor code to use new attribute getters on CallSite for NoCapture and ByVal.Nick Lewycky
Suggested in code review by Eli. That code in InstCombine looks kinda suspicious. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145013 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
2011-11-20SCEV: Actually set overflow flags on add expressions.Benjamin Kramer
setFlags doesn't modify its arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145007 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20Add code for lowering v32i8 shifts by a splat to AVX2 immediate shift ↵Craig Topper
instructions. Remove 256-bit splat handling from LowerShift as it was already handled by PerformShiftCombine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145005 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Use 256-bit vcmpeqd for creating an all ones vector when AVX2 is enabled.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145004 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Remove some of the special classes that worked around an old tablegen ↵Craig Topper
limitation of not being able to remove redundant bitconverts from patterns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145003 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Custom lower AVX2 variable shift intrinsics to shl/srl/sra nodes and remove ↵Craig Topper
the intrinsic patterns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144999 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Move the handling of unanalyzable branches out of the loop-driven chainChandler Carruth
formation phase and into the initial walk of the basic blocks. We essentially pre-merge all blocks where unanalyzable fallthrough exists, as we won't be able to update the terminators effectively after any reorderings. This is quite a bit more principled as there may be CFGs where the second half of the unanalyzable pair has some analyzable predecessor that gets placed first. Then it may get placed next, implicitly breaking the unanalyzable branch even though we never even looked at the part that isn't analyzable. I've included a test case that triggers this (thanks Benjamin yet again!), and I'm hoping to synthesize some more general ones as I dig into related issues. Also, to make this new scheme work we have to be able to handle branches into the middle of a chain, so add this check. We always fallback on the incoming ordering. Finally, this starts to really underscore a known limitation of the current implementation -- we don't consider broken predecessors when merging successors. This can caused major missed opportunities, and is something I'm planning on looking at next (modulo more bug reports). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144994 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Synthesize SSSE3/AVX 128-bit horizontal integer add/sub instructions from ↵Craig Topper
add/sub of appropriate shuffle vectors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144989 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Collapse X86 PSIGNB/PSIGNW/PSIGND node types.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144988 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Extend VPBLENDVB and VPSIGN lowering to work for AVX2.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144987 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-19Remove unused parameters from the AVX maskmov classes.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144985 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-18Fix a corner case in updating LoopInfo after fully unrolling an outer loop.Andrew Trick
The loop tree's inclusive block lists are painful and expensive to update. (I have no idea why they're inclusive). The design was supposed to handle this case but the implementation missed it and my unit tests weren't thorough enough. Fixes PR11335: loop unroll update. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144970 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-18Add AVX2 vpbroadcast supportNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144967 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-18[asan] workaround for reg alloc bug 11395: don't instrument functions with ↵Kostya Serebryany
large chunks of inline assembler git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-18Guard call to getRegForValue with isTypeLegal check to avoid unnecessary ↵Chad Rosier
work/dead code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144959 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17DISubrange supports unsigned lower/upper array bounds, so let's not fake it ↵Devang Patel
in the end while emitting DWARF. If a FE needs to encode signed lower/upper array bounds then we need to extend DISubrange or ad DISignedSubrange. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144937 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17quick fix: remove GlobalVariable::GlobalVariable mistakenly commited at ↵Kostya Serebryany
r144933. For some reason this compiles on linux git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144936 91177308-0d34-0410-b5e6-96231b3b80d8
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