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* Revert "Encapsulate PassManager debug flags to avoid static init and cxa_exit."Andrew Trick2013-09-19
| | | | | | | | Working on a better solution to this. This reverts commit 7d4e9934e7ca83094c5cf41346966c8350179ff2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190990 91177308-0d34-0410-b5e6-96231b3b80d8
* Encapsulate PassManager debug flags to avoid static init and cxa_exit.Andrew Trick2013-09-18
| | | | | | | | | | | | | | This puts all the global PassManager debugging flags, like -print-after-all and -time-passes, behind a managed static. This eliminates their static initializers and, more importantly, exit-time destructors. The only behavioral change I anticipate is that tools need to initialize the PassManager before parsing the command line in order to export these options, which makes sense. Tools that already initialize the standard passes (opt/llc) don't need to do anything new. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190974 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug info: Get rid of the VLA indirection hack in FastISel.Adrian Prantl2013-09-18
| | | | | | | | Use the DIVariable::isIndirect() flag set by the frontend instead of guessing whether to set the machine location's indirection bit. Paired commit with CFE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190961 91177308-0d34-0410-b5e6-96231b3b80d8
* [ARMv8] Add CRC instructions.Joey Gouly2013-09-18
| | | | | | | Patch by Bradley Smith! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190928 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix X86 subtarget to not overwrite the autodetected features by calling ↵Craig Topper2013-09-18
| | | | | | InitMCProcessorInfo right after detecting them. Instead add a new function that only updates the scheduling model and call that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190919 91177308-0d34-0410-b5e6-96231b3b80d8
* Costmodel: Add support for horizontal vector reductionsArnold Schwaighofer2013-09-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Upcoming SLP vectorization improvements will want to be able to estimate costs of horizontal reductions. Add infrastructure to support this. We model reductions as a series of (shufflevector,add) tuples ultimately followed by an extractelement. For example, for an add-reduction of <4 x float> we could generate the following sequence: (v0, v1, v2, v3) \ \ / / \ \ / + + (v0+v2, v1+v3, undef, undef) \ / ((v0+v2) + (v1+v3), undef, undef) %rdx.shuf = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef> %bin.rdx = fadd <4 x float> %rdx, %rdx.shuf %rdx.shuf7 = shufflevector <4 x float> %bin.rdx, <4 x float> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef> %bin.rdx8 = fadd <4 x float> %bin.rdx, %rdx.shuf7 %r = extractelement <4 x float> %bin.rdx8, i32 0 This commit adds a cost model interface "getReductionCost(Opcode, Ty, Pairwise)" that will allow clients to ask for the cost of such a reduction (as backends might generate more efficient code than the cost of the individual instructions summed up). This interface is excercised by the CostModel analysis pass which looks for reduction patterns like the one above - starting at extractelements - and if it sees a matching sequence will call the cost model interface. We will also support a second form of pairwise reduction that is well supported on common architectures (haddps, vpadd, faddp). (v0, v1, v2, v3) \ / \ / (v0+v1, v2+v3, undef, undef) \ / ((v0+v1)+(v2+v3), undef, undef, undef) %rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 0, i32 2 , i32 undef, i32 undef> %rdx.shuf.0.1 = shufflevector <4 x float> %rdx, <4 x float> undef, <4 x i32> <i32 1, i32 3, i32 undef, i32 undef> %bin.rdx.0 = fadd <4 x float> %rdx.shuf.0.0, %rdx.shuf.0.1 %rdx.shuf.1.0 = shufflevector <4 x float> %bin.rdx.0, <4 x float> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef> %rdx.shuf.1.1 = shufflevector <4 x float> %bin.rdx.0, <4 x float> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef> %bin.rdx.1 = fadd <4 x float> %rdx.shuf.1.0, %rdx.shuf.1.1 %r = extractelement <4 x float> %bin.rdx.1, i32 0 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190876 91177308-0d34-0410-b5e6-96231b3b80d8
* Add llvm.x86.* intrinsics for Intel SHA ExtensionsBen Langmuir2013-09-17
| | | | | | | | | Add llvm.x86.* intrinsics for all of the Intel SHA Extensions instructions, as well as tests. Also remove mayLoad and hasSideEffects, which can be inferred from the instruction patterns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190864 91177308-0d34-0410-b5e6-96231b3b80d8
* Make a more clear AVX-512 section header that matches similar in the file.Craig Topper2013-09-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190843 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify expressionAdrian Prantl2013-09-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190826 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug info: Fix PR16736 and rdar://problem/14990587.Adrian Prantl2013-09-16
| | | | | | | A DBG_VALUE is register-indirect iff the first operand is a register _and_ the second operand is an immediate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190821 91177308-0d34-0410-b5e6-96231b3b80d8
* MemCpyOptimizer: Use max legal int size instead of pointer sizeMatt Arsenault2013-09-16
| | | | | | | | | | | | If there are no legal integers, assume 1 byte. This makes more sense than using the pointer size as a guess for the maximum GPR width. It is conceivable to want to use some 64-bit pointers on a target where 64-bit integers aren't legal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190817 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement function prefix data as an IR feature.Peter Collingbourne2013-09-16
| | | | | | | | | Previous discussion: http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-July/063909.html Differential Revision: http://llvm-reviews.chandlerc.com/D1191 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190773 91177308-0d34-0410-b5e6-96231b3b80d8
* ELF: Add support for the exclude section bit for gas compat.Benjamin Kramer2013-09-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190769 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the long, long defunct IR block placement pass.Chandler Carruth2013-09-14
| | | | | | | | | | | | | | | | | This pass was based on the previous (essentially unused) profiling infrastructure and the assumption that by ordering the basic blocks at the IR level in a particular way, the correct layout would happen in the end. This sometimes worked, and mostly didn't. It also was a really naive implementation of the classical paper that dates from when branch predictors were primarily directional and when loop structure wasn't commonly available. It also didn't factor into the equation non-fallthrough branches and other machine level details. Anyways, for all of these reasons and more, I wrote MachineBlockPlacement, which completely supercedes this pass. It both uses modern profile information infrastructure, and actually works. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190748 91177308-0d34-0410-b5e6-96231b3b80d8
* Make PrettyStackTraceEntry use ManagedStatic for its ThreadLocal.Filip Pizlo2013-09-13
| | | | | | | | | | | | This was somewhat tricky because ~PrettyStackTraceEntry() may run after llvm_shutdown() has been called. This is rare and only happens for a common idiom used in the main() functions of command-line tools. This works around the idiom by skipping the stack clean-up if the PrettyStackTraceHead ManagedStatic is not constructed (i.e. llvm_shutdown() has been called). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190730 91177308-0d34-0410-b5e6-96231b3b80d8
* Add warn_unused_result to empty() on various containers.Benjamin Kramer2013-09-13
| | | | | | empty() doesn't actually empty out the container, making this a common typo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190708 91177308-0d34-0410-b5e6-96231b3b80d8
* Add initial support for handling gnu style pubnames accepted by someEric Christopher2013-09-13
| | | | | | | | versions of gold. This support is designed to allow gold to produce gdb_index sections similar to the accelerator tables and consumable by gdb. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190649 91177308-0d34-0410-b5e6-96231b3b80d8
* Somehow this important part of the patch, where I actually check the Mask,Joey Gouly2013-09-12
| | | | | | | | | got lost during my iterations of review. Thanks to Hal for spotting it! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190604 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an instruction deprecation feature to TableGen.Joey Gouly2013-09-12
| | | | | | | | | | | | | | | | | | | | | | | | The 'Deprecated' class allows you to specify a SubtargetFeature that the instruction is deprecated on. The 'ComplexDeprecationPredicate' class allows you to define a custom predicate that is called to check for deprecation. For example: ComplexDeprecationPredicate<"MCR"> would mean you would have to define the following function: bool getMCRDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI, std::string &Info) Which returns 'false' for not deprecated, and 'true' for deprecated and store the warning message in 'Info'. The MCTargetAsmParser constructor was chaned to take an extra argument of the MCInstrInfo class, so out-of-tree targets will need to be changed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190598 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix comment to match what the assert actually enforcesMatt Arsenault2013-09-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190566 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the appropriate return type for the compact unwind encoding.Bill Wendling2013-09-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190551 91177308-0d34-0410-b5e6-96231b3b80d8
* Add getUnrollingPreferences to TTIHal Finkel2013-09-11
| | | | | | | | | Allow targets to customize the default behavior of the generic loop unrolling transformation. This will be used by the PowerPC backend when targeting the A2 core (which is in-order with a deep pipeline), and using more aggressive defaults is important. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190542 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: move class definition of DIRef.Manman Ren2013-09-11
| | | | | | | | | | | | Definition of DIRef used to require the full definition of DIType because of usage of DIType::isType in DIRef::resolve. We now use DIDescriptor::isType instead to remove the requirement and move definition of DIRef before DIType. With this, we can move the definition of DIType::getContext to the header file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190540 91177308-0d34-0410-b5e6-96231b3b80d8
* Path: Add an in-place version of path::native.Benjamin Kramer2013-09-11
| | | | | | | | This reflects the common use case of nativizing a prepared path. The existing version invokes undefined behavior if input = output, add an assert to catch that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190510 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips][msa] Corrected the definition of the dotp_[su].[hwd] intrinsicsDaniel Sanders2013-09-11
| | | | | | | | | The elements of the operands should be half the width of the elements of the result. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190505 91177308-0d34-0410-b5e6-96231b3b80d8
* Support ANSI escape code on WindowsNico Rieck2013-09-11
| | | | | | | | In some cases (e.g. when a build system pipes stderr) the Windows console API cannot be used to color output. For these, provide a way to switch to ANSI escape codes. This is required for Clang's -fansi-escape-codes option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190460 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach ScalarEvolution about pointer address spacesMatt Arsenault2013-09-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190425 91177308-0d34-0410-b5e6-96231b3b80d8
* Add getenv() wrapper that works on multibyte environment variable.Rui Ueyama2013-09-10
| | | | | | | | | | | | | | | | | | On Windows, character encoding of multibyte environment variable varies depending on settings. The only reliable way to handle it I think is to use GetEnvironmentVariableW(). GetEnvironmentVariableW() works on wchar_t string, which is on Windows UTF16 string. That's not ideal because we use UTF-8 as the internal encoding in LLVM. This patch defines a wrapper function which takes and returns UTF-8 string for GetEnvironmentVariableW(). The wrapper function does not do any conversion and just forwards the argument to getenv() on Unix. Differential Revision: http://llvm-reviews.chandlerc.com/D1612 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190423 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: define a DIRef template.Manman Ren2013-09-10
| | | | | | | | | | | | | | Specialize the constructors for DIRef<DIScope> and DIRef<DIType> to make sure the Value is indeed a scope ref and a type ref. Use DIScopeRef for DIScope::getContext and DIType::getContext and use DITypeRef for getContainingType and getClassType. DIScope::generateRef now returns a DIScopeRef instead of a "Value *" for readability and type safety. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190418 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips][msa] Removed unsupported dot product instructions (dotp_[su].b)Daniel Sanders2013-09-10
| | | | | | | | The dotp_[su].b instructions never existed in any revision of the MSA spec. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190398 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: move DIScope::getContext back from DwarfDebug.Manman Ren2013-09-09
| | | | | | | | | This partially reverts r190330. DIScope::getContext now returns DIScopeRef instead of DIScope. We construct a DIScopeRef from DIScope when we are dealing with subprogram, lexical block or name space. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190362 91177308-0d34-0410-b5e6-96231b3b80d8
* white spaces and long linesJack Carter2013-09-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190358 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the gnu pubnames and pubtypes sections to the mc object fileEric Christopher2013-09-09
| | | | | | handling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190344 91177308-0d34-0410-b5e6-96231b3b80d8
* Add constant defines for gnu pubnames and gnu pubtypes - they're usedEric Christopher2013-09-09
| | | | | | for the gdb index as the names convey. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190343 91177308-0d34-0410-b5e6-96231b3b80d8
* Formatting.Eric Christopher2013-09-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190342 91177308-0d34-0410-b5e6-96231b3b80d8
* Call generateCompactUnwindEncodings() right before we need to output the ↵Bill Wendling2013-09-09
| | | | | | | | | | | | | | frame information. There are more than one paths to where the frame information is emitted. Place the call to generateCompactUnwindEncodings() into the method which outputs the frame information, thus ensuring that the encoding is there for every path. This involved threading the MCAsmBackend object through to this method. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190335 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Use DIScopeRef for DIType::getContext.Manman Ren2013-09-09
| | | | | | | | | | | | | | | | | | In DIBuilder, the context field of a TAG_member is updated to use the scope reference. Verifier is updated accordingly. DebugInfoFinder now needs to generate a type identifier map to have access to the actual scope. Same applies for BreakpointPrinter. processModule of DebugInfoFinder is called during initialization phase of the verifier to make sure the type identifier map is constructed early enough. We are now able to unique a simple class as demonstrated by the added testing case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190334 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: move DIScope::getContext to DwarfDebug.Manman Ren2013-09-09
| | | | | | | | | | | | | DIScope::getContext is a wrapper function that calls the specific getContext method on each subclass. When we switch DIType::getContext to return DIScopeRef instead of DIScope, DIScope::getContext can no longer return a DIScope without a type identifier map. DIScope::getContext is only used by DwarfDebug, so we move it to DwarfDebug to have easy access to the type identifier map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190330 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert patches to add case-range support for PR1255.Bob Wilson2013-09-09
| | | | | | | | | | | | | | | | | The work on this project was left in an unfinished and inconsistent state. Hopefully someone will eventually get a chance to implement this feature, but in the meantime, it is better to put things back the way the were. I have left support in the bitcode reader to handle the case-range bitcode format, so that we do not lose bitcode compatibility with the llvm 3.3 release. This reverts the following commits: 155464, 156374, 156377, 156613, 156704, 156757, 156804 156808, 156985, 157046, 157112, 157183, 157315, 157384, 157575, 157576, 157586, 157612, 157810, 157814, 157815, 157880, 157881, 157882, 157884, 157887, 157901, 158979, 157987, 157989, 158986, 158997, 159076, 159101, 159100, 159200, 159201, 159207, 159527, 159532, 159540, 159583, 159618, 159658, 159659, 159660, 159661, 159703, 159704, 160076, 167356, 172025, 186736 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190328 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Move isSubprogramContext from DebugInfo to DwarfDebug.Manman Ren2013-09-09
| | | | | | | | | | | This helper function needs the type identifier map when we switch DIType::getContext to return DIScopeRef instead of DIScope. Since isSubprogramContext is used by DwarfDebug only, We move it to DwarfDebug to have easy access to the map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190325 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Rename DITypeRef to DIScopeRef.Manman Ren2013-09-09
| | | | | | | | | | | | | | | | | | | | | | | A reference to a scope is more general than a reference to a type since DIType is a subclass of DIScope. A reference to a type can be either an identifier for the type or the DIType itself, while a reference to a scope can be either an identifier for the type (when the scope is indeed a type) or the DIScope itself. A reference to a type and a reference to a scope will be resolved in the same way. The only difference is in the verifier when a field is a reference to a type (i.e. the containing type field of a DICompositeType) or a field is a reference to a scope (i.e. the context field of a DIType). This is to get ready for switching DIType::getContext to return DIScopeRef instead of DIScope. Tighten up isTypeRef and isScopeRef to make sure the identifier is not empty and the MDNode is DIType for TypeRef and DIScope for ScopeRef. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190322 91177308-0d34-0410-b5e6-96231b3b80d8
* Generate compact unwind encoding from CFI directives.Bill Wendling2013-09-09
| | | | | | | | | | | | | | | | We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190290 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r190269 to fix dragonegg failures.Manman Ren2013-09-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190271 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: pass in DIScope instead of DIDescriptor in createMemberType.Manman Ren2013-09-08
| | | | | | | Improve readability. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190269 91177308-0d34-0410-b5e6-96231b3b80d8
* Run clang-format on these header files. Part of a WIP.Bill Wendling2013-09-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190250 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Use identifier to reference DIType in containing type field ofManman Ren2013-09-07
| | | | | | | | | a DISubprogram. Verifier is updated accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190229 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: pass in VTableHolder as DIType instead of MDNode *.Manman Ren2013-09-06
| | | | | | | Remove one cast and improve readability. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190225 91177308-0d34-0410-b5e6-96231b3b80d8
* TBAA: add isTBAAVtableAccess to MDNode so clients can call the functionManman Ren2013-09-06
| | | | | | | | | | | | | | instead of having its own implementation. The implementation of isTBAAVtableAccess is in TypeBasedAliasAnalysis.cpp since it is related to the format of TBAA metadata. The path for struct-path tbaa will be exercised by test/Instrumentation/ThreadSanitizer/read_from_global.ll, vptr_read.ll, and vptr_update.ll when struct-path tbaa is on by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190216 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Use identifier to reference DIType in containing type field ofManman Ren2013-09-06
| | | | | | | | | a DICompositeType. Verifier is updated accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190190 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Move a helper function getTypeIdentifier from DIBuilder to be partManman Ren2013-09-06
| | | | | | | | | | | | of DIType. Implement DIType::generateRef to return a type reference. This function will be used in setContaintingType and in DIBuilder to generete the type reference. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190188 91177308-0d34-0410-b5e6-96231b3b80d8
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