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* [DAG] Expose NoSignedWrap, NoUnsignedWrap and Exact flags to SelectionDAG.Andrea Di Biagio2014-06-09
| | | | | | | | | | | | | | | This patch modifies SelectionDAGBuilder to construct SDNodes with associated NoSignedWrap, NoUnsignedWrap and Exact flags coming from IR BinaryOperator instructions. Added a new SDNode type called 'BinaryWithFlagsSDNode' to allow accessing nsw/nuw/exact flags during codegen. Patch by Marcello Maggioni. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210467 91177308-0d34-0410-b5e6-96231b3b80d8
* Escape "@function" with \verbatim. [-Wdocumentation]NAKAMURA Takumi2014-06-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210443 91177308-0d34-0410-b5e6-96231b3b80d8
* SmallVector: More movable improvements - don't copy elements to make space ↵David Blaikie2014-06-08
| | | | | | | | when inserting repeated elements. Also split and improve tests a bit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210433 91177308-0d34-0410-b5e6-96231b3b80d8
* SmallVector: Move, don't copy, elements to make space for an insertion.David Blaikie2014-06-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210432 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some more moving-from-moved-from objects issues in SmallVectorDavid Blaikie2014-06-08
| | | | | | | | (& because it makes it easier to test, this also improves correctness/performance slightly by moving the last element in an insert operation, rather than copying it) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210429 91177308-0d34-0410-b5e6-96231b3b80d8
* AsmMatchers: Use unique_ptr to manage ownership of MCParsedAsmOperandDavid Blaikie2014-06-08
| | | | | | | | | | | | I saw at least a memory leak or two from inspection (on probably untested error paths) and r206991, which was the original inspiration for this change. I ran this idea by Jim Grosbach a few weeks ago & he was OK with it. Since it's a basically mechanical patch that seemed sufficient - usual post-commit review, revert, etc, as needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210427 91177308-0d34-0410-b5e6-96231b3b80d8
* Ensure SmallVector::insert doesn't overwrite the last element in the range ↵David Blaikie2014-06-08
| | | | | | | | | | | | | | with the already-moved-from value This would cause the last element in a range to be in a moved-from state after an insert at a non-end position, losing that value entirely in the process. Side note: move_backward is subtle. It copies [A, B) to C-1 and down. (the fact that it decrements both the second and third iterators before the first movement is the subtle part... kind of surprising, anyway) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210426 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove redundant typedef from MCAsmParserSemaCallbackAlp Toker2014-06-08
| | | | | | The last use has been removed in clang r210418. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210419 91177308-0d34-0410-b5e6-96231b3b80d8
* Make InlineAsmIdentifierInfo forward-declarableAlp Toker2014-06-08
| | | | | | This helps localize header inclusion in the frontend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210417 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the MachineScheduler's logic for updating ready times for in-order.Andrew Trick2014-06-07
| | | | | | | | | | | | | | | | | Now the scheduler updates a node's ready time as soon as it is scheduled, before releasing dependent nodes. There was a reason I didn't do this initially but it no longer applies. A53 is in-order and was running into an issue where nodes where added to the readyQ too early. That's now fixed. This also makes it easier for custom scheduling strategies to build heuristics based on the actual cycles that the node was scheduled at. The only impact on OOO (sandybridge/cyclone) is that ready times will be slightly more accurate. I didn't measure any significant regressions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210390 91177308-0d34-0410-b5e6-96231b3b80d8
* ADT: introduce isWindowsItaniumEnvironmentSaleem Abdulrasool2014-06-06
| | | | | | | | Add an isWindowsItaniumEnvironment function to Triple to mirror the other Windows environments. This is simply a utility function to check if we are targeting windows-itanium rather than windows-msvc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210383 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a few issues with comdat handling on COFF.Rafael Espindola2014-06-06
| | | | | | | | | | | | | | | | | | | | | * Section association cannot use just the section name as many sections can have the same name. With this patch, the comdat symbol in an assoc section is interpreted to mean a symbol in the associated section and the mapping is discovered from it. * Comdat symbols were not being set correctly. Instead we were getting whatever was output first for that section. A consequence is that associative sections now must use .section to set the association. Using .linkonce would not work since it is not possible to change a sections comdat symbol (it is used to decide if we should create a new section or reuse an existing one). This includes r210298, which was reverted because it was asserting on an associated section having the same comdat as the associated section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210367 91177308-0d34-0410-b5e6-96231b3b80d8
* Have TargetSelectionDAGInfo take a DataLayout initializer rather thanEric Christopher2014-06-06
| | | | | | a TargetMachine since the only thing it wants is DataLayout. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210366 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r210298 'Correctly set the comdat symbol on COFF' as it asserts on ↵Timur Iskhodzhanov2014-06-06
| | | | | | Windows git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210317 91177308-0d34-0410-b5e6-96231b3b80d8
* [yaml2obj][obj2yaml] Support ELF symbol's visibility flags ↵Simon Atanasyan2014-06-06
| | | | | | (default/hidden/protected). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210316 91177308-0d34-0410-b5e6-96231b3b80d8
* config.h: remove clang-specific macro definitionsAlp Toker2014-06-06
| | | | | | These had no business in LLVM core. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210307 91177308-0d34-0410-b5e6-96231b3b80d8
* Correctly set the comdat symbol on COFF.Rafael Espindola2014-06-05
| | | | | | | | | | | | | | | | | | | | | We extended the .section syntax to allow multiple sections with the same name but different comdats, but currently we don't make sure that the output section has that comdat symbol. That happens to work with the code llc produces currently because it looks like .section secName, "dr", one_only, "COMDATSym" .globl COMDATSym COMDATSym: .... but that is not very friendly to anyone coding in assembly or even to llc once we get comdat support in the IR. This patch changes the coff object writer to make sure the comdat symbol is output just after the section symbol, as required by the coff spec. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210298 91177308-0d34-0410-b5e6-96231b3b80d8
* Add "-format darwin" to llvm-nm to be like darwin's nm(1) -m output.Kevin Enderby2014-06-05
| | | | | | | | | | | | | | | | This is a first step in seeing if it is possible to make llvm-nm produce the same output as darwin's nm(1). Darwin's default format is bsd but its -m output prints the longer Mach-O specific details. For now I added the "-format darwin" to do this (whos name may need to change in the future). As there are other Mach-O specific flags to nm(1) which I'm hoping to add some how in the future. But I wanted to see if I could get the correct output for -m flag using llvm-nm and the libObject interfaces. I got this working but would love to hear what others think about this approach to getting object/format specific details printed with llvm-nm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210285 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new attribute called 'jumptable' that creates jump-instruction tables ↵Tom Roeder2014-06-05
| | | | | | | | | | | | | for functions marked with this attribute. It includes a pass that rewrites all indirect calls to jumptable functions to pass through these tables. This also adds backend support for generating the jump-instruction tables on ARM and X86. Note that since the jumptable attribute creates a second function pointer for a function, any function marked with jumptable must also be marked with unnamed_addr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210280 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing const specifier to a const method.Evgeniy Stepanov2014-06-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210265 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: Reapply r209984 (reverted in r210143), asserting that abstract ↵David Blaikie2014-06-04
| | | | | | | | | | | | | | | | | DbgVariables have DIEs. Abstract variables within abstract scopes that are entirely optimized away in their first inlining are omitted because their scope is not present so the variable is never created. Instead, we should ensure the scope is created so the variable can be added, even if it's been optimized away in its first inlining. This fixes the incorrect debug info in missing-abstract-variable.ll (added in r210143) and passes an asserts self-hosting build, so hopefully there's not more of these issues left behind... *fingers crossed*. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210221 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a Constant version of stripPointerCasts.Rafael Espindola2014-06-04
| | | | | | Thanks to rnk for the suggestion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210205 91177308-0d34-0410-b5e6-96231b3b80d8
* Clauses in a landingpad are always Constant. Use a stricter type.Rafael Espindola2014-06-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210203 91177308-0d34-0410-b5e6-96231b3b80d8
* Support: style/documentation cleanup for formatSaleem Abdulrasool2014-06-04
| | | | | | | | | | | | | | | | This is purely a documentation/whitespace cleanup for the format support functions. The current style does not duplicate the function/class names in the documentation; conform to this style. Additionally, there was a large amount of duplication of comments that added no real value. Use block comments for the related sets of functions which are used for type deduction and parameter container classes. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210190 91177308-0d34-0410-b5e6-96231b3b80d8
* Support: add additional comment for ARM EH structureSaleem Abdulrasool2014-06-04
| | | | | | | | | | Replicate the fact that ARM::WinEH::RuntimeFunction purposefully does not merge functions to accommodate raw data access use cases in tools such as readobj. Pointed out by Renato during post-commit review. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210189 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a subtarget hook: enablePostMachineScheduler.Andrew Trick2014-06-04
| | | | | | | | | | | | | | | As requested by AArch64 subtargets. Note that this will have no effect until the AArch64 target actually enables the pass like this: substitutePass(&PostRASchedulerID, &PostMachineSchedulerID); As soon as armv7 switches over, PostMachineScheduler will become the default postRA scheduler, so this won't be necessary any more. Targets using the old postRA schedule would then do: substitutePass(&PostMachineSchedulerID, &PostRASchedulerID); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210167 91177308-0d34-0410-b5e6-96231b3b80d8
* Move GenericScheduler and PostGenericScheduler into a header.Andrew Trick2014-06-04
| | | | | | | | | | | | | | | | | | | | | | These were not exposed previously because I didn't want out-of-tree targets to be too dependent on their internals. They can be reused for a very wide variety of processors with casual scheduling needs without exposing the classes by instead using hooks defined in MachineSchedPolicy (we can add more if needed). When targets are more aggressively tuned or want to provide custom heuristics, they can define their own MachineSchedStrategy. I tend to think this is better once you start customizing heuristics because you can copy over only what you need. I don't think that layering heuristics generally works well. However, Arch64 targets now want to reuse the Generic scheduling logic but also provide extensions. I don't see much harm in exposing the Generic scheduling classes with a major caveat: these scheduling strategies may change in the future without validating performance on less mainstream processors. If you want to be immune from changes, just define your own MachineSchedStrategy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210166 91177308-0d34-0410-b5e6-96231b3b80d8
* [Object][ELF] Range-based loop simplification.Simon Atanasyan2014-06-04
| | | | | | No functional changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210164 91177308-0d34-0410-b5e6-96231b3b80d8
* config.h: fix layering and don't duplicate definitionsAlp Toker2014-06-04
| | | | | | | | | | | Also correct the llvm-config.h header guard so it doesn't depend on 'CONFIG_H' which is commonly defined in external projects and caused trouble for embedders. In future llvm/Config/llvm-config.h will be installed, but not the private llvm/Config/config.h header. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210144 91177308-0d34-0410-b5e6-96231b3b80d8
* Calculate dead instructions when a live interval is created.Pete Cooper2014-06-03
| | | | | | | | | This gets us closer to being able to remove LiveVariables entirely which is where dead instructions are currently tagged as such. Reviewed by Jakob Olesen git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210132 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove some redundant doc commentsAlp Toker2014-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210118 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement one operator== with another.Rafael Espindola2014-06-03
| | | | | | Thanks for David Blaikie for the suggestion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210107 91177308-0d34-0410-b5e6-96231b3b80d8
* Add operator== and operator!= to compare with nullptr.Rafael Espindola2014-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210100 91177308-0d34-0410-b5e6-96231b3b80d8
* Use an enum class.Rafael Espindola2014-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210078 91177308-0d34-0410-b5e6-96231b3b80d8
* Use an enum class.Rafael Espindola2014-06-03
| | | | | | Might also fix the windows build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210077 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the last unspecified_bool_type from llvm.Rafael Espindola2014-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210076 91177308-0d34-0410-b5e6-96231b3b80d8
* Make this operator bool() explicit to match the standard library.Rafael Espindola2014-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210073 91177308-0d34-0410-b5e6-96231b3b80d8
* Make this operator bool() explicit to match the standard library.Rafael Espindola2014-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210072 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow alias to point to an arbitrary ConstantExpr.Rafael Espindola2014-06-03
| | | | | | | | | | | | | | | | | | | | | This patch changes GlobalAlias to point to an arbitrary ConstantExpr and it is up to MC (or the system assembler) to decide if that expression is valid or not. This reduces our ability to diagnose invalid uses and how early we can spot them, but it also lets us do things like @test5 = alias inttoptr(i32 sub (i32 ptrtoint (i32* @test2 to i32), i32 ptrtoint (i32* @bar to i32)) to i32*) An important implication of this patch is that the notion of aliased global doesn't exist any more. The alias has to encode the information needed to access it in its metadata (linkage, visibility, type, etc). Another consequence to notice is that getSection has to return a "const char *". It could return a NullTerminatedStringRef if there was such a thing, but when that was proposed the decision was to just uses "const char*" for that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210062 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove sanitizer blacklist from ASan/TSan/MSan function passes.Alexey Samsonov2014-06-02
| | | | | | | | | | | | | | | | | | | Instrumentation passes now use attributes address_safety/thread_safety/memory_safety which are added by Clang frontend. Clang parses the blacklist file and adds the attributes accordingly. Currently blacklist is still used in ASan module pass to disable instrumentation for certain global variables. We should fix this as well by collecting the set of globals we're going to instrument in Clang and passing it to ASan in metadata (as we already do for dynamically-initialized globals and init-order checking). This change also removes -tsan-blacklist and -msan-blacklist LLVM commandline flags in favor of -fsanitize-blacklist= Clang flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210038 91177308-0d34-0410-b5e6-96231b3b80d8
* GraphWriter: detect graph viewer programs at runtimeAlp Toker2014-06-02
| | | | | | | | | | | | | | | | | | | | | | Replace the crufty build-time configure checks for program paths with equivalent runtime logic. This lets users install graphing tools as needed without having to reconfigure and rebuild LLVM, while eliminating a long chain of inappropriate compile dependencies that included GUI programs and the windowing system. Additional features: * Support the OS X 'open' command to view graphs generated by any of the Graphviz utilities. This is an alternative to the Graphviz OS X UI which is no longer available on Mountain Lion. * Produce informative log output upon failure to indicate which programs can be installed to view graphs. Ping me if this doesn't work for your particular environment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210001 91177308-0d34-0410-b5e6-96231b3b80d8
* Support: add 6-parameter formatSaleem Abdulrasool2014-06-02
| | | | | | | | Since we cannot yet use variadic templates, add a specialisation for 6-parameters to format. This is motivated by a need for the additional parameter for formatting information for an unwind decoder for Windows on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209999 91177308-0d34-0410-b5e6-96231b3b80d8
* Support: add Windows ARM EH data structuresSaleem Abdulrasool2014-06-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce the support structures necessary to deal with the Windows ARM EH data. These definitions are extremely aggressive about assertions to aid future use for generation of the entries and subsequent decoding. The names for the various fields are meant to reflect the names used by the Visual Studio toolchain to aid communication. Due to the complexity in reading a few of the values, there are a couple of additional utility functions to decode the information. In general, there are two ways to encode the unwinding information: - packed, which places the data inline into the _IMAGE_ARM_RUNTIME_FUNCTION_ENTRY structure. - unpacked, which places the data into auxiliary structures placed into the .xdata section. The set of structures allow reading of data in either encoding, with the minor caveat that epilogue scopes need to be decoded manually by constructing the structure from the data returned by the RuntimeFunction structure. These definitions are meant for read-only access at the current point as the first use of them will be to decode the exception information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209998 91177308-0d34-0410-b5e6-96231b3b80d8
* ExecutionEngine: avoid NDEBUG in headersAlp Toker2014-05-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209981 91177308-0d34-0410-b5e6-96231b3b80d8
* [SelectionDAG] Force cycle detection in AssignTopologicalOrder before abortingAdam Nemet2014-05-31
| | | | | | | | | | | | | | | DAG cycle detection is only enabled with ENABLE_EXPENSIVE_CHECKS. However we can run it just before we would crash in order to provide more informative diagnostics. Now in addition to the "Overran sorted position" message we also get the Node printed if a cycle was detected. Tested by building several configs: Debug+Assert, Debug+Assert+Check (this is ENABLE_EXPENSIVE_CHECKS), Release+Assert and Release. Also tried that the AssignTopologicalOrder assert produces the expected results. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209977 91177308-0d34-0410-b5e6-96231b3b80d8
* [SelectionDAG] Pass DAG to checkForCyclesAdam Nemet2014-05-31
| | | | | | | | | Pass the DAG down to checkForCycles from all callers where we have it. This allows target-specific nodes to be printed properly. Also print some missing newlines. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209976 91177308-0d34-0410-b5e6-96231b3b80d8
* [SelectionDAG] Remove duplicate declarationAdam Nemet2014-05-31
| | | | | | | Prefer the decl in SelectionDAGNodes.h because it's used there and SelectionDAG.h includes SelectionDAGNodes.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209975 91177308-0d34-0410-b5e6-96231b3b80d8
* [yaml2obj] Add new command line option `-docnum`.Simon Atanasyan2014-05-31
| | | | | | | | | | Input YAML file might contain multiple object file definitions. New option `-docnum` allows to specify an ordinal number (starting from 1) of definition used for an object file generation. Patch reviewed by Sean Silva. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209967 91177308-0d34-0410-b5e6-96231b3b80d8
* There is no std::errc::success, remove the llvm one.Rafael Espindola2014-05-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209960 91177308-0d34-0410-b5e6-96231b3b80d8
* Turn errc and windows_error into enum classes.Rafael Espindola2014-05-31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209957 91177308-0d34-0410-b5e6-96231b3b80d8
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