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* Redirect unused test case output to /dev/nullAlexey Samsonov2013-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194798 91177308-0d34-0410-b5e6-96231b3b80d8
* Use instr mapping for microMIPS in llvm-mc.Zoran Jovanovic2013-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194792 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply "[asan] Poor man's coverage that works with ASan"Bob Wilson2013-11-15
| | | | | | | | I was able to successfully run a bootstrapped LTO build of clang with r194701, so this change does not seem to be the cause of our failing buildbots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194789 91177308-0d34-0410-b5e6-96231b3b80d8
* Platform proof a test case.Andrew Trick2013-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194788 91177308-0d34-0410-b5e6-96231b3b80d8
* Add instcombine visitor for addrspacecastMatt Arsenault2013-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194786 91177308-0d34-0410-b5e6-96231b3b80d8
* Add target hook to prevent folding some bitcasted loads.Matt Arsenault2013-11-15
| | | | | | | | | | | | | This is to avoid this transformation in some cases: fold (conv (load x)) -> (load (conv*)x) On architectures that don't natively support some vector loads efficiently casting the load to a smaller vector of larger types and loading is more efficient. Patch by Micah Villmow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194783 91177308-0d34-0410-b5e6-96231b3b80d8
* [OCaml] Add REQUIRES: native, object-emission to the Target testPeter Zotov2013-11-15
| | | | | | | | While the test would work with any compiled in target with object emission support, it's nontrivial to formulate this condition in lit, so a conservative restriction is used instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194781 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "[asan] Poor man's coverage that works with ASan"Bob Wilson2013-11-15
| | | | | | | | | This reverts commit 194701. Apple's bootstrapped LTO builds have been failing, and this change (along with compiler-rt 194702-194704) is the only thing on the blamelist. I will either reappy these changes or help debug the problem, depending on whether this fixes the buildbots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194780 91177308-0d34-0410-b5e6-96231b3b80d8
* [OCaml] Use native target in testsuite instead of hardcoding X86Peter Zotov2013-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194778 91177308-0d34-0410-b5e6-96231b3b80d8
* [OCaml] Add Target and TargetMachine bindings to Llvm_targetPeter Zotov2013-11-15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194774 91177308-0d34-0410-b5e6-96231b3b80d8
* [OCaml] Refactor Llvm_target interfacePeter Zotov2013-11-15
| | | | | | | | This commit brings the module structure, argument order and primitive names in Llvm_target in order with the rest of the bindings, in preparation for adding TargetMachine API. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194773 91177308-0d34-0410-b5e6-96231b3b80d8
* Make all the conditional Mips 16 branches get initially set for theReed Kotler2013-11-15
| | | | | | | | | | | | short form. Constant islands will expand them if they are out of range. Since there is not direct object emitter at this time, it does not have any material affect because the assembler sorts this out. But we need to know for the actual constant island work. We track the difference by putting # 16 inst in the comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194766 91177308-0d34-0410-b5e6-96231b3b80d8
* Add addrspacecast instruction.Matt Arsenault2013-11-15
| | | | | | Patch by Michele Scandale! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194760 91177308-0d34-0410-b5e6-96231b3b80d8
* R600: Fix scheduling of instructions that use the LDS output queueTom Stellard2013-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | The LDS output queue is accessed via the OQAP register. The OQAP register cannot be live across clauses, so if value is written to the output queue, it must be retrieved before the end of the clause. With the machine scheduler, we cannot statisfy this constraint, because it lacks proper alias analysis and it will mark some LDS accesses as having a chain dependency on vertex fetches. Since vertex fetches require a new clauses, the dependency may end up spiltting OQAP uses and defs so the end up in different clauses. See the lds-output-queue.ll test for a more detailed explanation. To work around this issue, we now combine the LDS read and the OQAP copy into one instruction and expand it after register allocation. This patch also adds some checks to the EmitClauseMarker pass, so that it doesn't end a clause with a value still in the output queue and removes AR.X and OQAP handling from the scheduler (AR.X uses and defs were already being expanded post-RA, so the scheduler will never see them). Reviewed-by: Vincent Lejeune <vljn at ovi.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194755 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify testcase.Eric Christopher2013-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194748 91177308-0d34-0410-b5e6-96231b3b80d8
* Recognize 0x0000 as a COFF file magic.Rui Ueyama2013-11-14
| | | | | | | | | | | | | | | Summary: Some machine-type-neutral object files containing only undefined symbols actually do exist in the Windows standard library. Need to recognize them as COFF files. Reviewers: Bigcheese CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2164 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194734 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: produce friendly error for invalid inline asmTim Northover2013-11-14
| | | | | | | | | We used to perform an invalid operation on an MVT and crash, which wasn't much fun. Patch by Oliver Stannard. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194714 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a triple and switch test to FileCheck.Rafael Espindola2013-11-14
| | | | | | | On windows we don't print .weak for function definitions, so count was only finding 1 'weak'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194713 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm-cov.test: Remove XFAIL:arm. Seems this is passing since my tweaks.NAKAMURA Takumi2013-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194712 91177308-0d34-0410-b5e6-96231b3b80d8
* Error if we see an alias to a declaration.Rafael Espindola2013-11-14
| | | | | | | | | | | | | | | In ELF and COFF an alias is just another offset in a section. There is no way to represent an alias to something in another file. In MachO, the spec has the N_INDR type which should allow for exactly that, but is not currently implemented. Given that it is specified but not implemented, we error in codegen to avoid miscompiling but don't reject aliases to declarations in the verifier to leave the option open of implementing it. In the past we have used alias to declarations as a way of implementing weakref, which is why it exists in some old tests which this patch updates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194705 91177308-0d34-0410-b5e6-96231b3b80d8
* [asan] Poor man's coverage that works with ASanKostya Serebryany2013-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194701 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Use CHECK-DAG instead of CHECK where order of instructions does not ↵Evgeniy Stepanov2013-11-14
| | | | | | | | | matter. This may fix hexagon-elf bots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194700 91177308-0d34-0410-b5e6-96231b3b80d8
* [msan] Fast path optimization for wrap-indirect-calls feature of ↵Evgeniy Stepanov2013-11-14
| | | | | | | | | | | | | | | | | | | | MemorySanitizer. Indirect call wrapping helps MSanDR (dynamic instrumentation companion tool for MSan) to catch all cases where execution leaves a compiler-instrumented module by allowing the tool to rewrite targets of indirect calls. This change is an optimization that skips wrapping for calls when target is inside the current module. This relies on the linker providing symbols at the begin and end of the module code (or code + data, does not really matter). Gold linker provides such symbols by default. GNU (BFD) linker needs a link flag: -Wl,--defsym=__executable_start=0. More info: https://code.google.com/p/memory-sanitizer/wiki/MSanDR#Native_exec git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194697 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm-cov.test: Tweak win32 hosts not confused by \r\n in llvm-cov's stdout.NAKAMURA Takumi2013-11-14
| | | | | | "diff -b" -- Ignore space changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194694 91177308-0d34-0410-b5e6-96231b3b80d8
* AVX-512: Handled extractelement from mask vector;Elena Demikhovsky2013-11-14
| | | | | | | Added VMOSHDUP/VMOVSLDUP shuffle instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194691 91177308-0d34-0410-b5e6-96231b3b80d8
* R600/SI: Add testcase for problem I ran intoMatt Arsenault2013-11-14
| | | | | | with the older version of the moveToVALU changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194682 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor extension to llvm.experimental.patchpoint: don't require a call.Andrew Trick2013-11-14
| | | | | | | | If a null call target is provided, don't emit a dummy call. This allows the runtime to reserve as little nop space as it needs without the requirement of emitting a call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194676 91177308-0d34-0410-b5e6-96231b3b80d8
* Add test case for AArch64 NEON instruction set misc.Kevin Qin2013-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194673 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't mangle \n and "Rafael Espindola2013-11-14
| | | | | | | | | | There is nothing special about quotes and newlines from the object file point of view, only the assembler has to worry about expanding the \n and \". This patch then removes the special handling from the Mangler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194667 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement aarch64 neon instruction class SIMD misc.Kevin Qin2013-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194656 91177308-0d34-0410-b5e6-96231b3b80d8
* Suppress llvm-cov.test on Win32, with REQUIRES: shellNAKAMURA Takumi2013-11-14
| | | | | | "cd" is unsupported in lit internal runner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194652 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement AArch64 NEON instruction set AdvSIMD (table).Jiangning Liu2013-11-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194648 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixing a heisenbug where the memory dependence analysis behaves differentlyYunzhong Gao2013-11-14
| | | | | | | | | | | | | | with and without -g. Adding a test case to make sure that the threshold used in the memory dependence analysis is respected. The test case also checks that debug intrinsics are not counted towards this threshold. Differential Revision: http://llvm-reviews.chandlerc.com/D2141 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194646 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm-cov: Removed StringMap holding GCOVLines.Yuchen Wu2013-11-14
| | | | | | | | | | | | | | | | | According to the hazy gcov documentation, it appeared to be technically possible for lines within a block to belong to different source files. However, upon further investigation, gcov does not actually support multiple source files for a single block. This change removes a level of separation between blocks and lines by replacing the StringMap of GCOVLines with a SmallVector of ints representing line numbers. This also means that the GCOVLines class is no longer needed. This paves the way for supporting the "-a" option, which will output block information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194637 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm-cov: Replaced asserts with proper error handling.Yuchen Wu2013-11-14
| | | | | | | | | | | | | | Unified the interface for read functions. They all return a boolean indicating if the read from file succeeded. Functions that previously returned the read value now store it into a variable that is passed in by reference instead. Callers will need to check the return value to detect if an error occurred. Also added a new test which ensures that no assertions occur when file contains invalid data. llvm-cov should return with error code 1 upon failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194635 91177308-0d34-0410-b5e6-96231b3b80d8
* Take care of long short branch immediate instructions for mips16 inReed Kotler2013-11-13
| | | | | | | | constant islands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194630 91177308-0d34-0410-b5e6-96231b3b80d8
* R600/SI: Add support for private address space load/storeTom Stellard2013-11-13
| | | | | | | Private address space is emulated using the register file with MOVRELS and MOVRELD instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194626 91177308-0d34-0410-b5e6-96231b3b80d8
* R600/SI: Prefer SALU instructions for bit shift operationsTom Stellard2013-11-13
| | | | | | | | | | | | | | All shift operations will be selected as SALU instructions and then if necessary lowered to VALU instructions in the SIFixSGPRCopies pass. This allows us to do more operations on the SALU which will improve performance and is also required for implementing private memory using indirect addressing, since the private memory pointers must stay in the scalar registers. This patch includes some fixes from Matt Arsenault. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194625 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm-cov: Changed XFAIL targets to be more generic.Yuchen Wu2013-11-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194622 91177308-0d34-0410-b5e6-96231b3b80d8
* Added basic unit test for llvm-cov.Yuchen Wu2013-11-13
| | | | | | | | | | This test compares the output of llvm-cov against a coverage file generated by gcov. Currently, llvm-cov does not work on certain platforms (namely big-endian architectures such as PowerPC, among others). These platforms are marked as XFAIL for now, but will be fixed later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194616 91177308-0d34-0410-b5e6-96231b3b80d8
* [AArch64] Add support for legacy AArch32 NEON scalar shift by immediateChad Rosier2013-11-13
| | | | | | | | instructions. This patch does not include the shift right and accumulate instructions. A number of non-overloaded intrinsics have been remove in favor of their overloaded counterparts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194598 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable generating legacy IT block for AArch32Weiming Zhao2013-11-13
| | | | | | | | | | | | | | | | By default, the behavior of IT block generation will be determinated dynamically base on the arch (armv8 vs armv7). This patch adds backend options: -arm-restrict-it and -arm-no-restrict-it. The former one restricts the generation of IT blocks (the same behavior as thumbv8) for both arches. The later one allows the generation of legacy IT block (the same behavior as ARMv7 Thumb2) for both arches. Clang will support -mrestrict-it and -mno-restrict-it, which is compatible with GCC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194592 91177308-0d34-0410-b5e6-96231b3b80d8
* [SystemZ] Add the general form of BCRRichard Sandiford2013-11-13
| | | | | | | At the moment this is just the MC support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194585 91177308-0d34-0410-b5e6-96231b3b80d8
* FileCheck: fix matching of one check-prefix is a prefix of anotherAlexey Samsonov2013-11-13
| | | | | | | | | | | | | | | | | Summary: Fix a case when "FileCheck --check-prefix=CHECK --check-prefix=CHECKER" would silently ignore check-lines of the form: CHECKER: foo Reviewers: dsanders Reviewed By: dsanders CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2168 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194577 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove AllowQuotesInName and friends from MCAsmInfo.Rafael Espindola2013-11-13
| | | | | | | | | | | Accepting quotes is a property of an assembler, not of an object file. For example, ELF can support any names for sections and symbols, but the gnu assembler only accepts quotes in some contexts and llvm-mc in a few more. LLVM should not produce different symbols based on a guess about which assembler will be reading the code it is printing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194575 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix bug in .gpword directive parsing.Vladimir Medic2013-11-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194570 91177308-0d34-0410-b5e6-96231b3b80d8
* Support for microMIPS trap instruction with immediate operands.Zoran Jovanovic2013-11-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194569 91177308-0d34-0410-b5e6-96231b3b80d8
* SampleProfileLoader pass. Initial setup.Diego Novillo2013-11-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new scalar pass that reads a file with samples generated by 'perf' during runtime. The samples read from the profile are incorporated and emmited as IR metadata reflecting that profile. The profile file is assumed to have been generated by an external profile source. The profile information is converted into IR metadata, which is later used by the analysis routines to estimate block frequencies, edge weights and other related data. External profile information files have no fixed format, each profiler is free to define its own. This includes both the on-disk representation of the profile and the kind of profile information stored in the file. A common kind of profile is based on sampling (e.g., perf), which essentially counts how many times each line of the program has been executed during the run. The SampleProfileLoader pass is organized as a scalar transformation. On startup, it reads the file given in -sample-profile-file to determine what kind of profile it contains. This file is assumed to contain profile information for the whole application. The profile data in the file is read and incorporated into the internal state of the corresponding profiler. To facilitate testing, I've organized the profilers to support two file formats: text and native. The native format is whatever on-disk representation the profiler wants to support, I think this will mostly be bitcode files, but it could be anything the profiler wants to support. To do this, every profiler must implement the SampleProfile::loadNative() function. The text format is mostly meant for debugging. Records are separated by newlines, but each profiler is free to interpret records as it sees fit. Profilers must implement the SampleProfile::loadText() function. Finally, the pass will call SampleProfile::emitAnnotations() for each function in the current translation unit. This function needs to translate the loaded profile into IR metadata, which the analyzer will later be able to use. This patch implements the first steps towards the above design. I've implemented a sample-based flat profiler. The format of the profile is fairly simplistic. Each sampled function contains a list of relative line locations (from the start of the function) together with a count representing how many samples were collected at that line during execution. I generate this profile using perf and a separate converter tool. Currently, I have only implemented a text format for these profiles. I am interested in initial feedback to the whole approach before I send the other parts of the implementation for review. This patch implements: - The SampleProfileLoader pass. - The base ExternalProfile class with the core interface. - A SampleProfile sub-class using the above interface. The profiler generates branch weight metadata on every branch instructions that matches the profiles. - A text loader class to assist the implementation of SampleProfile::loadText(). - Basic unit tests for the pass. Additionally, the patch uses profile information to compute branch weights based on instruction samples. This patch converts instruction samples into branch weights. It does a fairly simplistic conversion: Given a multi-way branch instruction, it calculates the weight of each branch based on the maximum sample count gathered from each target basic block. Note that this assignment of branch weights is somewhat lossy and can be misleading. If a basic block has more than one incoming branch, all the incoming branches will get the same weight. In reality, it may be that only one of them is the most heavily taken branch. I will adjust this assignment in subsequent patches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194566 91177308-0d34-0410-b5e6-96231b3b80d8
* FileCheck: fix a bug with multiple --check-prefix options.Alexey Samsonov2013-11-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This fixes a subtle bug in new FileCheck feature added in r194343. When we search for the first satisfying check-prefix, we should actually return the first encounter of some check-prefix as a substring, even if it's not a part of valid check-line. Otherwise "FileCheck --check-prefix=FOO --check-prefix=BAR" with check file: FOO not a vaild check-line FOO: foo BAR: bar incorrectly accepted file: fog bar as it skipped the first two encounters of FOO, matching only BAR: line. Reviewers: arsenm, dsanders Reviewed By: dsanders CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2166 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194565 91177308-0d34-0410-b5e6-96231b3b80d8
* XCore target: implement exception handlingRobert Lytton2013-11-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194564 91177308-0d34-0410-b5e6-96231b3b80d8
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