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* PrologEpilogInserter: Some code cleanup; NFCMatthias Braun2016-06-291-40/+36
| | | | | | | | | - Use range based for - Use the more common variable names MBB and MF for MachineBasicBlock/MachineFunction variables. - Add a few const modifiers llvm-svn: 274187
* StackColoring for SafeStack.Evgeniy Stepanov2016-06-296-38/+696
| | | | | | | | | | | | | | | | This is a fix for PR27842. An IR-level implementation of stack coloring tailored to work with SafeStack. It is a bit weaker than the MI implementation in that it does not the "lifetime start at first access" logic. This can be improved in the future. This patch also replaces the naive implementation of stack frame layout with a greedy algorithm that can split existing stack slots and even fit small objects inside the alignment padding of other objects. llvm-svn: 274162
* [DAGCombine] Teach DAG combine to handle ORs of shuffles involving zero ↵Craig Topper2016-06-291-45/+52
| | | | | | vectors where the zero vector is the first operand to the shuffle instead of the second. llvm-svn: 274097
* [CodeGen] Make ShuffleVectorSDNode::commuteMask take a MutableArrayRef ↵Craig Topper2016-06-291-1/+1
| | | | | | instead of SmallVectorImpl. NFC. llvm-svn: 274095
* Codegen: [MBP] Add messages to asserts. NFCKyle Butt2016-06-281-3/+4
| | | | llvm-svn: 274075
* Use isPositionIndependent in a few more places.Rafael Espindola2016-06-283-3/+3
| | | | | | | | | I think this converts all the simple cases that really just care about the generated code being position independent or not. The remaining uses are a bit more complicated and are checking things like "is this a library or executable" or "can this symbol be preempted". llvm-svn: 274055
* Fix typoKrzysztof Parzyszek2016-06-281-1/+1
| | | | llvm-svn: 274051
* Fixed MSVC unresolved symbol error due to an incorrectly declared externSimon Pilgrim2016-06-281-1/+1
| | | | llvm-svn: 274007
* [BFI/MBFI]: cfg graph view with color scheme Xinliang David Li2016-06-281-1/+9
| | | | | | | | | | This patch enhances dot graph viewer to show hot regions with hot bbs/edges displayed in red. The ratio of the bb freq to the max freq of the function needs to be no less than the value specified by view-hot-freq-percent option. The default value is 10 (i.e. 10%). llvm-svn: 273996
* [BFI]: enhance BFI graph dumpXinliang David Li2016-06-281-4/+3
| | | | | | | | | MBFI supports profile count dumping and function name based filtering. Add these two feature to BFI as well. The filtering option is shared between BFI and MBFI: -view-bfi-func-name=.. llvm-svn: 273992
* [BFI]: graph viewer code refactoring Xinliang David Li2016-06-281-47/+11
| | | | | | | | | | | BFI and MBFI's dot traits class share most of the code and all future enhancement. This patch extracts common implementation into base class BFIDOTGraphTraitsBase. This patch also enables BFI graph to show branch probability on edges as MBFI does before. llvm-svn: 273990
* [BFI]: code cleanup Xinliang David Li2016-06-281-4/+9
| | | | | | | | Expose getBPI interface from BFI impl and use it in graph viewer. This eliminates the dependency on old PM interface. llvm-svn: 273967
* Move shouldAssumeDSOLocal to Target.Rafael Espindola2016-06-272-45/+1
| | | | | | Should fix the shared library build. llvm-svn: 273958
* Teach shouldAssumeDSOLocal about tls.Rafael Espindola2016-06-271-20/+19
| | | | | | Fixes a fixme about handling other visibilities. llvm-svn: 273921
* DAGCombiner: Don't narrow volatile vector loads + extractMatt Arsenault2016-06-271-3/+8
| | | | llvm-svn: 273909
* [ARM] Fix Thumb text sections' flags under COFF/WindowsRenato Golin2016-06-271-5/+7
| | | | | | | | | | | | | | | | The main issue here is that the "thumb" flag wasn't set for some of these sections, making MSVC's link.exe fails to correctly relocate code against the symbols inside these sections. link.exe could fail for instance with the "fixup is not aligned for target 'XX'" error. If linking doesn't fail, the relocation process goes wrong in the end and invalid code is generated by the linker. This patch adds Thumb/ARM information so that the right flags are set on COFF/Windows. Patch by Adrien Guinet. llvm-svn: 273880
* Move isPositionIndependent up to AsmPrinter.Rafael Espindola2016-06-271-0/+4
| | | | | | Use it in ppc too. llvm-svn: 273877
* Use isPositionIndependent predicate. NFC.Rafael Espindola2016-06-261-1/+1
| | | | llvm-svn: 273830
* Use isPositionIndependent predicate.Rafael Espindola2016-06-261-1/+1
| | | | llvm-svn: 273828
* Refactor a duplicated predicate. NFC.Rafael Espindola2016-06-261-0/+4
| | | | llvm-svn: 273826
* Revert r273807 (and r273809, r273810), it caused PR28311Nico Weber2016-06-261-49/+3
| | | | llvm-svn: 273815
* Fixed build failure (due to unused variable error) in r273807.Amjad Aboud2016-06-261-0/+1
| | | | llvm-svn: 273810
* Fixed build failure (due to unused variable error) in r273807.Amjad Aboud2016-06-261-3/+1
| | | | llvm-svn: 273809
* [codeview] Improved array type support.Amjad Aboud2016-06-261-2/+49
| | | | | | | | | | | Added support for: 1. Multi dimension array. 2. Array of structure type, which previously was declared incompletely. 3. Dynamic size array. Differential Revision: http://reviews.llvm.org/D21526 llvm-svn: 273807
* [SelectionDAG] Use DAG.getCommutedVectorShuffle instead of reimplementing it.Craig Topper2016-06-261-15/+2
| | | | llvm-svn: 273802
* Revert "[SimplifyCFG] Stop inserting calls to llvm.trap for UB"David Majnemer2016-06-251-3/+3
| | | | | | This reverts commit r273778, it seems to break UBSan :/ llvm-svn: 273779
* [SimplifyCFG] Stop inserting calls to llvm.trap for UBDavid Majnemer2016-06-251-3/+3
| | | | | | | | | | | | | | | | | SimplifyCFG had logic to insert calls to llvm.trap for two very particular IR patterns: stores and invokes of undef/null. While InstCombine canonicalizes certain undefined behavior IR patterns to stores of undef, phase ordering means that this cannot be relied upon in general. There are much better tools than llvm.trap: UBSan and ASan. N.B. I could be argued into reverting this change if a clear argument as to why it is important that we synthesize llvm.trap for stores, I'd be hard pressed to see why it'd be useful for invokes... llvm-svn: 273778
* MachineScheduler: Remember top/bottom choice in bidirectional schedulingMatthias Braun2016-06-251-9/+50
| | | | | | | | | | | | | Remember the last choice for the top/bottom scheduling boundary in bidirectional scheduling mode. The top choice should not change if we schedule at the bottom and vice versa. This allows us to improve compiletime: We only recalculate the best pick for one border and re-use the cached top-pick from the other border. Differential Revision: http://reviews.llvm.org/D19350 llvm-svn: 273766
* MachineScheduler: Fully compare top/bottom candidatesMatthias Braun2016-06-251-99/+103
| | | | | | | | | | In bidirectional scheduling this gives more stable results than just comparing the "reason" fields of the top/bottom node because the reason field may be higher depending on what other nodes are in the queue. Differential Revision: http://reviews.llvm.org/D19401 llvm-svn: 273755
* [MBP] show function name in debug dumpXinliang David Li2016-06-241-0/+1
| | | | llvm-svn: 273744
* Fix the type signature of DwarfExpression::Add.*Constant to support values ↵Adrian Prantl2016-06-242-4/+4
| | | | | | | | | | | >32 bits. This fixes an embarrassing bug when emitting .debug_loc entries for 64-bit+ constants, which were previously silently truncated to 32 bits. <rdar://problem/26843232> llvm-svn: 273736
* [PM] Port PreISelIntrinsicLowering to the new PMMichael Kuperstein2016-06-242-12/+21
| | | | llvm-svn: 273713
* Revert r273545, "[IfConversion] Bugfix: Don't use undef flag while adding ↵Peter Collingbourne2016-06-241-16/+3
| | | | | | | | use operands." as it caused PR28295. llvm-svn: 273707
* Use shouldAssumeDSOLocal in isOffsetFoldingLegal.Rafael Espindola2016-06-241-9/+14
| | | | | | This makes it slightly more powerful for dynamic-no-pic. llvm-svn: 273704
* Codegen: Fix broken assumption in Tail Merge.Kyle Butt2016-06-241-1/+1
| | | | | | | | | Tail merge was making the assumption that a layout successor or predecessor was always a cfg successor/predecessor. Remove that assumption. Changes to tests are necessary because the errant cfg edges were preventing optimizations. llvm-svn: 273700
* [codeview] Emit parameter variables in the right orderReid Kleckner2016-06-242-4/+25
| | | | | | | | | | Clang emits them in reverse order to conform to the ABI, which requires left-to-right destruction. As a result, the order doesn't fall out naturally, and we have to sort things out in the backend. Fixes PR28213 llvm-svn: 273696
* [MDT] Always verify machine dominfo if expensive checking is enabled.Chad Rosier2016-06-241-2/+2
| | | | llvm-svn: 273690
* [codeview] Emit base class information from DW_TAG_inheritance nodesReid Kleckner2016-06-242-3/+49
| | | | | | | | | | | | | | | | There are two remaining issues here: 1. No vbptr information 2. Need to mention indirect virtual bases Getting indirect virtual bases is just a matter of adding an "indirect" flag, emitting them in the frontend, and ignoring them when appropriate for DWARF. All virtual bases use the same artificial vbptr field, so I think the vbptr offset will be best represented by an implicit __vbptr$ClassName member similar to our existing __vptr$ member. llvm-svn: 273688
* [MachineDominatorTree] Add a MDT verifier.Chad Rosier2016-06-241-0/+30
| | | | | | Differential Revision: http://reviews.llvm.org/D21657 llvm-svn: 273678
* [codeview] Add classes and unions to the Local/Global UDTs listsHans Wennborg2016-06-232-19/+29
| | | | | | Differential Revision: http://reviews.llvm.org/D21655 llvm-svn: 273626
* MachineScheduler: Followup to debug message changesMatthias Braun2016-06-231-1/+0
| | | | | | | Do not dump intermediate state of the pending queue anymore now that we always dump the final state before picking. llvm-svn: 273618
* Codegen: LICM Remove check for exactly 1 register def.Kyle Butt2016-06-231-1/+0
| | | | | | | | | | | | | | | | | | When considering whether to split an instruction with a memory operand into an explicit load and a register-based instruction, we currently check that the resulting instruction has exactly 1 def. This prevents 2 important LICM optimizations: compares with memory operands, and double indirect calls. All the tests and the test-suite pass without the check. My guess as to original intent is to limit the additional register pressure created by the new instruction, but given that we only split out a single register, it is already limited. The licm-dominance test now checks actual memory loads for hoisting instead of undef, and it tests compares. hoist-invariant-load.ll now checks for 2 hoists, the intended hoist, and a bonus from calling a got-relative function in a loop. llvm-svn: 273616
* MachineScheduler: Improve debug messagesMatthias Braun2016-06-231-7/+7
| | | | | | | Consistenly display available and pending queues immediately before the scheduling choice is done. llvm-svn: 273615
* Preserve DebugInfo when replacing values in DAGCombinerNirav Dave2016-06-234-14/+26
| | | | | | | | | | | | | | | | | | | | | Recommiting after correcting over-eager Debug Value transfer fixing PR28270. [DAG] Previously debug values would transfer debuginfo for the selected start node for a replacement which allows for debug to be dropped. Push debug value transfer to occur with node/value replacement in SelectionDAG, remove now extraneous transfers of debug values. This refixes PR9817 which was being incompletely checked in the testsuite. Reviewers: jyknight Subscribers: dblaikie, llvm-commits Differential Revision: http://reviews.llvm.org/D21037 llvm-svn: 273585
* [codeview] Emit retained typesHans Wennborg2016-06-232-0/+17
| | | | | | Differential Revision: http://reviews.llvm.org/D21630 llvm-svn: 273579
* [IfConversion] Bugfix: Don't use undef flag while adding use operands.Jonas Paulsson2016-06-231-3/+16
| | | | | | | | | | | | | | | IfConversion used to always add the undef flag when adding a use operand on a newly predicated instruction. This would be an operand for the register being conditionally redefined. Due to the undef flag, the liveness of this register prior to the predicated instruction would get lost. This patch changes this so that such use operands are added only when the register is live, without the undef flag. Reviewed by Quentin Colombet. http://reviews.llvm.org/D209077 llvm-svn: 273545
* Fix doubly included headerMatt Arsenault2016-06-231-1/+0
| | | | llvm-svn: 273528
* Revert r273456, "Preserve DebugInfo when replacing values in DAGCombiner" as ↵Peter Collingbourne2016-06-234-20/+8
| | | | | | it caused pr28270. llvm-svn: 273518
* [ImplicitNullChecks] Hoist trivial depdendencies if possibleSanjoy Das2016-06-221-20/+159
| | | | | | | | | | | | | | | | | | | | | | When trying to convert a loading instruction into a FAULTING_LOAD, we sometimes face code like this: if %R10 is not null: %R9<def> = MOV32ri Immediate %R9<def, tied> = AND32rm %R9, 0x20(%R10) else: goto TRAP In these cases we would like to use the AND32rm instruction as the faulting operation by hoisting the "depedency" def-ing %R9 also above the control flow, transforming the program into: %R9<def> = MOV32ri Immediate %R9<def, tied> = FAULTING_LOAD_OP(AND32rm %R9, 0x20(%R10), FailPath: TRAP) This change teaches ImplicitNullChecks to do the above, when safe. llvm-svn: 273501
* [codeview] Write LF_UDT_SRC_LINE records (PR28251)Hans Wennborg2016-06-221-6/+20
| | | | | | Differential Revision: http://reviews.llvm.org/D21621 llvm-svn: 273495
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