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* Remove 256-bit specific node types for UNPCKHPS/D and instead use the ↵Craig Topper2011-11-241-0/+36
| | | | | | 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
* X86: alias cqo to cqto.Benjamin Kramer2011-11-241-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145121 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a silly use-after-free issue. A much earlier version of this codeChandler Carruth2011-11-241-0/+211
| | | | | | | | | | | | 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
* When adding blocks to the list of those which no longer have any CFGChandler Carruth2011-11-241-0/+56
| | | | | | | | | | | | | | 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
* Correctly byte-swap APInts with bit-widths greater than 64.Richard Smith2011-11-231-1/+17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145111 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a crash in which a multiplication was being reported as being both negativeDuncan Sands2011-11-231-0/+17
| | | | | | | | | 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
* X86: Use btq for bit tests if the immediate can't be encoded in 32 bits.Benjamin Kramer2011-11-231-0/+35
| | | | | | | | | | | | | | | | 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
* test/CodeGen/X86/block-placement.ll: Add explicit -mtriple=i686-linux. X86 ↵NAKAMURA Takumi2011-11-231-1/+1
| | | | | | Win32 CodeGen does not support EH yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145101 91177308-0d34-0410-b5e6-96231b3b80d8
* Relax an invariant that block placement was trying to assert a bitChandler Carruth2011-11-231-0/+25
| | | | | | | | | | | 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
* I added several lines in X86 code generator that allow to choose Elena Demikhovsky2011-11-231-0/+14
| | | | | | | | | | 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
* Handle the case of a no-return invoke correctly. It actually still hasChandler Carruth2011-11-231-0/+24
| | | | | | | | | 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
* Enable stack protectors for all arrays, not just char arrays. rdar://5875909Bob Wilson2011-11-231-1/+1
| | | | | | Patch by Bill Wendling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145097 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR11422.Jakob Stoklund Olesen2011-11-231-0/+99
| | | | | | | | | | | | | 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
* Fix a crash in block placement due to an inner loop that happened to beChandler Carruth2011-11-231-0/+41
| | | | | | | | | | | 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
* [asan] do not instrument threadlocal globals, this is buggyKostya Serebryany2011-11-231-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
* add basic PPC register-pressure feedback; adjust the vaarg test to match the ↵Hal Finkel2011-11-221-92/+90
| | | | | | new register-allocation pattern git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145065 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a devilish miscompile exposed by block placement. TheChandler Carruth2011-11-221-0/+28
| | | | | | | | | | | | | | | | | | | | | 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
* Add triple to the test.Rafael Espindola2011-11-221-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145057 91177308-0d34-0410-b5e6-96231b3b80d8
* If a register is both an early clobber and part of a tied use, handle the useRafael Espindola2011-11-221-0/+23
| | | | | | | | 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
* Fix crasher in GVN due to my recent capture tracking changes.Nick Lewycky2011-11-211-0/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145047 91177308-0d34-0410-b5e6-96231b3b80d8
* Lowering for v32i8 to VPUNPCKLBW/VPUNPCKHBW when AVX2 is enabled.Craig Topper2011-11-211-0/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145028 91177308-0d34-0410-b5e6-96231b3b80d8
* Test case for r145026Craig Topper2011-11-211-0/+43
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145027 91177308-0d34-0410-b5e6-96231b3b80d8
* Make LowerSIGN_EXTEND_INREG split 256-bit vectors when AVX1 is enabled and ↵Craig Topper2011-11-212-0/+44
| | | | | | use AVX2 shifts when AVX2 is enabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145022 91177308-0d34-0410-b5e6-96231b3b80d8
* test/CodeGen/X86/block-placement.ll: Relax expressions for Win32.NAKAMURA Takumi2011-11-201-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145011 91177308-0d34-0410-b5e6-96231b3b80d8
* The logic for breaking the CFG in the presence of hot successors didn'tChandler Carruth2011-11-201-0/+36
| | | | | | | | | | | | | | | | 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
* XFAIL this test until I figure out what indvars is doing here (or find ↵Benjamin Kramer2011-11-201-0/+3
| | | | | | someone who does) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145008 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some comments to the latest test case I added here to document whatChandler Carruth2011-11-201-1/+22
| | | | | | | | | | | | | | | | | is actually being tested. Also add some FileCheck goodness to much more carefully ensure that the result is the desired result. Before this test would only have failed through an assert failure if the underlying fix were reverted. Also, add some weight metadata and a comment explaining exactly what is going on to a trick section of the test case. Originally, we were getting very unlucky and trying to form a block chain that isn't actually profitable. I'm working on a fix to avoid forming these unprofitable chains, and that would also have masked any failure from this test case. The easy solution is to add some metadata that makes it *really* profitable to form the bad chain here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145006 91177308-0d34-0410-b5e6-96231b3b80d8
* Add code for lowering v32i8 shifts by a splat to AVX2 immediate shift ↵Craig Topper2011-11-201-12/+50
| | | | | | 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
* Use 256-bit vcmpeqd for creating an all ones vector when AVX2 is enabled.Craig Topper2011-11-191-0/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145004 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the handling of unanalyzable branches out of the loop-driven chainChandler Carruth2011-11-191-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | 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
* Test cases for SSSE3/AVX integer horizontal add/sub.Craig Topper2011-11-191-0/+170
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144990 91177308-0d34-0410-b5e6-96231b3b80d8
* Extend VPBLENDVB and VPSIGN lowering to work for AVX2.Craig Topper2011-11-191-0/+29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144987 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a corner case in updating LoopInfo after fully unrolling an outer loop.Andrew Trick2011-11-181-0/+41
| | | | | | | | | | | | 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
* Add AVX2 vpbroadcast supportNadav Rotem2011-11-181-0/+142
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144967 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] workaround for reg alloc bug 11395: don't instrument functions with ↵Kostya Serebryany2011-11-181-0/+71
| | | | | | large chunks of inline assembler git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
* DISubrange supports unsigned lower/upper array bounds, so let's not fake it ↵Devang Patel2011-11-171-0/+37
| | | | | | 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
* Fix an overly general check in SimplifyIndvar to handle useless phi cycles.Andrew Trick2011-11-171-0/+29
| | | | | | | | | | | | | | | The right way to check for a binary operation is cast<BinaryOperator>. The original check: cast<Instruction> && numOperands() == 2 would match phi "instructions", leading to an infinite loop in extreme corner case: a useless phi with operands [self, constant] that prior optimization passes failed to remove, being used in the loop by another useless phi, in turn being used by an lshr or udiv. Fixes PR11350: runaway iteration assertion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144935 91177308-0d34-0410-b5e6-96231b3b80d8
* fall back to explicit list of allowed linkages when instrumenting globals in ↵Kostya Serebryany2011-11-171-0/+6
| | | | | | asan; add a test check that asan does not touch linkonce_odr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144933 91177308-0d34-0410-b5e6-96231b3b80d8
* When fast iseling a GEP, accumulate the offset rather than emitting a series ofChad Rosier2011-11-171-0/+65
| | | | | | | | | | | | | | | ADDs. MaxOffs is used as a threshold to limit the size of the offset. Tradeoffs being: (1) If we can't materialize the large constant then we'll cause fast-isel to bail. (2) Too large of an offset can't be directly encoded in the ADD resulting in a MOV+ADD. Generally not a bad thing because otherwise we would have had ADD+ADD, but on Thumb this turns into a MOVS+MOVT+ADD. Working on a fix for that. (3) Conversely, too low of a threshold we'll miss opportunities to coalesce ADDs. rdar://10412592 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144886 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for custom names for library functions in TargetLibraryInfo. ↵Eli Friedman2011-11-171-0/+30
| | | | | | | | | | | | Add a custom name for fwrite and fputs on x86-32 OSX. Make SimplifyLibCalls honor the custom names for fwrite and fputs. Fixes <rdar://problem/9815881>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144876 91177308-0d34-0410-b5e6-96231b3b80d8
* build/make/test: Get rid of unused BUGPOINT_TOPTS variable.Daniel Dunbar2011-11-161-5/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144864 91177308-0d34-0410-b5e6-96231b3b80d8
* Make sure to replace the chain properly when DAGCombining a ↵Eli Friedman2011-11-161-1/+1
| | | | | | LOAD+EXTRACT_VECTOR_ELT into a single LOAD. Fixes PR10747/PR11393. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144863 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove obsolete test.Jim Grosbach2011-11-161-58/+0
| | | | | | The PLD encoding is checked via the .s file now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144853 91177308-0d34-0410-b5e6-96231b3b80d8
* Generalize the fixup info for ARM mode.Jim Grosbach2011-11-161-2/+2
| | | | | | | We don't (yet) have the granularity in the fixups to be specific about which bitranges are affected. That's a future cleanup, but we're not there yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144852 91177308-0d34-0410-b5e6-96231b3b80d8
* Update test for r144842.Jim Grosbach2011-11-161-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144851 91177308-0d34-0410-b5e6-96231b3b80d8
* Another missing X86ISD::MOVLPD pattern. rdar://10450317Evan Cheng2011-11-161-0/+17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144839 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable expensive two-address optimizations at -O0. rdar://10453055Evan Cheng2011-11-162-5/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144806 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix typo in test.Nick Lewycky2011-11-161-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144774 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge isObjectPointerWithTrustworthySize with getPointerSize. Use it whenNick Lewycky2011-11-161-0/+38
| | | | | | | looking at the size of the pointee. Fixes PR11390! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144773 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix testcase.Eli Friedman2011-11-161-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144769 91177308-0d34-0410-b5e6-96231b3b80d8
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