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* [PM] Un-indent this file-level namespace. It's far more common to notChandler Carruth2014-01-12
| | | | | | indent the outer-most llvm namespace in header files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199040 91177308-0d34-0410-b5e6-96231b3b80d8
* [PM] Fix a bunch of bugs I spotted by inspection when working on thisChandler Carruth2014-01-12
| | | | | | code. Copious tests added to cover these cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199039 91177308-0d34-0410-b5e6-96231b3b80d8
* [PM] Add support for parsing function passes and function pass managerChandler Carruth2014-01-12
| | | | | | | | | nests to the opt commandline support. This also showcases the implicit-initial-manager support which will be most useful for testing. There are several bugs that I spotted by inspection here that I'll fix with test cases in subsequent commits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199038 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: fix diagnostics of improper qualificationSaleem Abdulrasool2014-01-12
| | | | | | | | An improper qualifier would result in a superfluous error due to the parser not consuming the remainder of the statement. Simply consume the remainder of the statement to avoid the error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199035 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc] Add support for parsing floating point instructions.Venkatraman Govindaraju2014-01-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199033 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: change implicit immediate forms of {ld,st}r{,b}t to psuedo-instructionsSaleem Abdulrasool2014-01-12
| | | | | | | | | | | | | The implicit immediate 0 forms are assembly aliases, not distinct instruction encodings. Fix the initial implementation introduced in r198914 to an alias to avoid two separate instruction definitions for the same encoding. An InstAlias is insufficient in this case as the necessary due to the need to add a new additional operand for the implicit zero. By using the AsmPsuedoInst, fall back to the C++ code to transform the instruction to the equivalent _POST_IMM form, inserting the additional implicit immediate 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199032 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc] Replace (unsigned)-1 with ~OU as suggested by Reid Kleckner.Venkatraman Govindaraju2014-01-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199031 91177308-0d34-0410-b5e6-96231b3b80d8
* The SPARCv9 ABI returns a float in %f0.Jakob Stoklund Olesen2014-01-12
| | | | | | | | | | | | | | | This is different from the argument passing convention which puts the first float argument in %f1. With this patch, all returned floats are treated as if the 'inreg' flag were set. This means multiple float return values get packed in %f0, %f1, %f2, ... Note that when returning a struct in registers, clang will set the 'inreg' flag on the return value, so that behavior is unchanged. This also happens when returning a float _Complex. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199028 91177308-0d34-0410-b5e6-96231b3b80d8
* TypoJoerg Sonnenberger2014-01-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199027 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing mul aliases for armv4 support. Add checks that armv4 canJoerg Sonnenberger2014-01-12
| | | | | | | assemble the various mul instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199026 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch-to-lookup tables: Don't require a result for the defaultHans Wennborg2014-01-12
| | | | | | | | | | | | | | | | | | | | | | | case when the lookup table doesn't have any holes. This means we can build a lookup table for switches like this: switch (x) { case 0: return 1; case 1: return 2; case 2: return 3; case 3: return 4; default: exit(1); } The default case doesn't yield a constant result here, but that doesn't matter, since a default result is only necessary for filling holes in the lookup table, and this table doesn't have any holes. This makes us transform 505 more switches in a clang bootstrap, and shaves 164 KB off the resulting clang binary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199025 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc] Add missing processor types: v7 and niagaraVenkatraman Govindaraju2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199024 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM IAS: support emitting constant values in target expressionsSaleem Abdulrasool2014-01-11
| | | | | | | | A 32-bit immediate value can be formed from a constant expression and loaded into a register. Add support to emit this into an object file. Because this value is a constant, a relocation must *not* be produced for it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199023 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix broken CHECK lines.Benjamin Kramer2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199016 91177308-0d34-0410-b5e6-96231b3b80d8
* LoopVectorizer: Enable strided memory accesses versioning per defaultArnold Schwaighofer2014-01-11
| | | | | | | | I saw no compile or execution time regressions on x86_64 -mavx -O3. radar://13075509 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199015 91177308-0d34-0410-b5e6-96231b3b80d8
* [Sparc] Bundle instruction with delay slow and its filler. Now, we can use ↵Venkatraman Govindaraju2014-01-11
| | | | | | -verify-machineinstrs with SPARC backend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199014 91177308-0d34-0410-b5e6-96231b3b80d8
* lit: Provide source locations in cfg files with older Python versionsAlp Toker2014-01-11
| | | | | | | | | This commit prospectively brings the benefits of r198766 to older supported Python versions (2.5+). Tested with Python 2.6, 2.7, 3.1 and 3.3 (!) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199009 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix 'ned' typo in doc commentAlp Toker2014-01-11
| | | | | | Patch by Jasper Neumann! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199007 91177308-0d34-0410-b5e6-96231b3b80d8
* lit: execfile() isn't present in Python 3.3Alp Toker2014-01-11
| | | | | | | | | | | | On the other hand, exec(compile()) doesn't work in older Python versions in the 2.x series. This commit introduces exec(compile()) with a fallback to plain exec(). That'll hopefully hit the sweet spot in terms of version support. Followup to r198766 which added enhanced source locations for lit cfg parsing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199006 91177308-0d34-0410-b5e6-96231b3b80d8
* [PM] Actually nest pass managers correctly when parsing the passChandler Carruth2014-01-11
| | | | | | | pipeline string. Add tests that cover this now that we have execution dumping in the pass managers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199005 91177308-0d34-0410-b5e6-96231b3b80d8
* [PM] Add names to passes under the new pass manager, and a debug outputChandler Carruth2014-01-11
| | | | | | | | | | mode that can be used to debug the execution of everything. No support for analyses here, that will come later. This already helps show parts of the opt commandline integration that isn't working. Tests of that will start using it as the bugs are fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199004 91177308-0d34-0410-b5e6-96231b3b80d8
* [PM] Somehow I missed the header guards on this file. Yikes!Chandler Carruth2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199003 91177308-0d34-0410-b5e6-96231b3b80d8
* LoopVectorize.cpp: Appease MSC16.NAKAMURA Takumi2014-01-11
| | | | | | | Excuse me, I hope msc16 builders would be fine till its end day. Introduce nullptr then. ;) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199001 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm/test/Transforms/SampleProfile/syntax.ll: Eliminate locale-sensitive ↵NAKAMURA Takumi2014-01-11
| | | | | | message check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199000 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm/test/CodeGen/X86/anyregcc.ll: Add explicit -mtriple=x86_64-unknown-unknown.NAKAMURA Takumi2014-01-11
| | | | | | XMM(s) are really spilling for targeting Win64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198999 91177308-0d34-0410-b5e6-96231b3b80d8
* [PM] Add (very skeletal) support to opt for running the new passChandler Carruth2014-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | manager. I cannot emphasize enough that this is a WIP. =] I expect it to change a great deal as things stabilize, but I think its really important to get *some* functionality here so that the infrastructure can be tested more traditionally from the commandline. The current design is looking something like this: ./bin/opt -passes='module(pass_a,pass_b,function(pass_c,pass_d))' So rather than custom-parsed flags, there is a single flag with a string argument that is parsed into the pass pipeline structure. This makes it really easy to have nice structural properties that are very explicit. There is one obvious and important shortcut. You can start off the pipeline with a pass, and the minimal context of pass managers will be built around the entire specified pipeline. This makes the common case for tests super easy: ./bin/opt -passes=instcombine,sroa,gvn But this won't introduce any of the complexity of the fully inferred old system -- we only ever do this for the *entire* argument, and we only look at the first pass. If the other passes don't fit in the pass manager selected it is a hard error. The other interesting aspect here is that I'm not relying on any registration facilities. Such facilities may be unavoidable for supporting plugins, but I have alternative ideas for plugins that I'd like to try first. My plan is essentially to build everything without registration until we hit an absolute requirement. Instead of registration of pass names, there will be a library dedicated to parsing pass names and the pass pipeline strings described above. Currently, this is directly embedded into opt for simplicity as it is very early, but I plan to eventually pull this into a library that opt, bugpoint, and even Clang can depend on. It should end up as a good home for things like the existing PassManagerBuilder as well. There are a bunch of FIXMEs in the code for the parts of this that are just stubbed out to make the patch more incremental. A quick list of what's coming up directly after this: - Support for function passes and building the structured nesting. - Support for printing the pass structure, and FileCheck tests of all of this code. - The .def-file based pass name parsing. - IR priting passes and the corresponding tests. Some obvious things that I'm not going to do right now, but am definitely planning on as the pass manager work gets a bit further: - Pull the parsing into library, including the builders. - Thread the rest of the target stuff into the new pass manager. - Wire support for the new pass manager up to llc. - Plugin support. Some things that I'd like to have, but are significantly lower on my priority list. I'll get to these eventually, but they may also be places where others want to contribute: - Adding nice error reporting for broken pass pipeline descriptions. - Typo-correction for pass names. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198998 91177308-0d34-0410-b5e6-96231b3b80d8
* [anyregcc] Fix callee-save mask for anyregccJuergen Ributzka2014-01-11
| | | | | | | Use separate callee-save masks for XMM and YMM registers for anyregcc on X86 and select the proper mask depending on the target cpu we compile for. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198985 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r198979 - accidental commit.Eric Christopher2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198981 91177308-0d34-0410-b5e6-96231b3b80d8
* Reformat.Eric Christopher2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198980 91177308-0d34-0410-b5e6-96231b3b80d8
* Update function name and add some helpful comments.Eric Christopher2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198979 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix odd whitespace.Eric Christopher2014-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198978 91177308-0d34-0410-b5e6-96231b3b80d8
* Extend and simplify the sample profile input file.Diego Novillo2014-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1- Use the line_iterator class to read profile files. 2- Allow comments in profile file. Lines starting with '#' are completely ignored while reading the profile. 3- Add parsing support for discriminators and indirect call samples. Our external profiler can emit more profile information that we are currently not handling. This patch does not add new functionality to support this information, but it allows profile files to provide it. I will add actual support later on (for at least one of these features, I need support for DWARF discriminators in Clang). A sample line may contain the following additional information: Discriminator. This is used if the sampled program was compiled with DWARF discriminator support (http://wiki.dwarfstd.org/index.php?title=Path_Discriminators). This is currently only emitted by GCC and we just ignore it. Potential call targets and samples. If present, this line contains a call instruction. This models both direct and indirect calls. Each called target is listed together with the number of samples. For example, 130: 7 foo:3 bar:2 baz:7 The above means that at relative line offset 130 there is a call instruction that calls one of foo(), bar() and baz(). With baz() being the relatively more frequent call target. Differential Revision: http://llvm-reviews.chandlerc.com/D2355 4- Simplify format of profile input file. This implements earlier suggestions to simplify the format of the sample profile file. The symbol table is not necessary and function profiles do not need to know the number of samples in advance. Differential Revision: http://llvm-reviews.chandlerc.com/D2419 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198973 91177308-0d34-0410-b5e6-96231b3b80d8
* Propagation of profile samples through the CFG.Diego Novillo2014-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a propagation heuristic to convert instruction samples into branch weights. It implements a similar heuristic to the one implemented by Dehao Chen on GCC. The propagation proceeds in 3 phases: 1- Assignment of block weights. All the basic blocks in the function are initial assigned the same weight as their most frequently executed instruction. 2- Creation of equivalence classes. Since samples may be missing from blocks, we can fill in the gaps by setting the weights of all the blocks in the same equivalence class to the same weight. To compute the concept of equivalence, we use dominance and loop information. Two blocks B1 and B2 are in the same equivalence class if B1 dominates B2, B2 post-dominates B1 and both are in the same loop. 3- Propagation of block weights into edges. This uses a simple propagation heuristic. The following rules are applied to every block B in the CFG: - If B has a single predecessor/successor, then the weight of that edge is the weight of the block. - If all the edges are known except one, and the weight of the block is already known, the weight of the unknown edge will be the weight of the block minus the sum of all the known edges. If the sum of all the known edges is larger than B's weight, we set the unknown edge weight to zero. - If there is a self-referential edge, and the weight of the block is known, the weight for that edge is set to the weight of the block minus the weight of the other incoming edges to that block (if known). Since this propagation is not guaranteed to finalize for every CFG, we only allow it to proceed for a limited number of iterations (controlled by -sample-profile-max-propagate-iterations). It currently uses the same GCC default of 100. Before propagation starts, the pass builds (for each block) a list of unique predecessors and successors. This is necessary to handle identical edges in multiway branches. Since we visit all blocks and all edges of the CFG, it is cleaner to build these lists once at the start of the pass. Finally, the patch fixes the computation of relative line locations. The profiler emits lines relative to the function header. To discover it, we traverse the compilation unit looking for the subprogram corresponding to the function. The line number of that subprogram is the line where the function begins. That becomes line zero for all the relative locations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198972 91177308-0d34-0410-b5e6-96231b3b80d8
* Space formatting fix for r198966.Tom Roeder2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198971 91177308-0d34-0410-b5e6-96231b3b80d8
* Constant propagate MachineInstrClassName.Roman Divacky2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198969 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixing build break: should be in the if statement, not outside.Tom Roeder2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198966 91177308-0d34-0410-b5e6-96231b3b80d8
* Restore the library dependency of LLVMgold on LTO; this was removed recently butTom Roeder2014-01-10
| | | | | | | is needed for LLVMgold to load in ld. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198965 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a note about the old asm printer being removed.Rafael Espindola2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198960 91177308-0d34-0410-b5e6-96231b3b80d8
* All backends use MC now.Rafael Espindola2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198959 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the simpler version of sys::fs::remove when possible.Rafael Espindola2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198958 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove remove_all. A compiler has no need for recursively deleting a directory.Rafael Espindola2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198955 91177308-0d34-0410-b5e6-96231b3b80d8
* LTO: whitespace changesDuncan P. N. Exon Smith2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198954 91177308-0d34-0410-b5e6-96231b3b80d8
* LoopVectorizer: Handle strided memory accesses by versioningArnold Schwaighofer2014-01-10
| | | | | | | | | | | | | | | for (i = 0; i < N; ++i) A[i * Stride1] += B[i * Stride2]; We take loops like this and check that the symbolic strides 'Strided1/2' are one and drop to the scalar loop if they are not. This is currently disabled by default and hidden behind the flag 'enable-mem-access-versioning'. radar://13075509 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198950 91177308-0d34-0410-b5e6-96231b3b80d8
* SCEVRewriter: Optionally interpret constants in value map as SCEVConstantArnold Schwaighofer2014-01-10
| | | | | | | | | An upcoming loop vectorizer commit will want to replace a SCEVUnknown(Value*) by a SCEVConstant. This commit modifies the SCEVParameterRewriter to support this. The SCEVParameterRewriter constructor can optionally specify to follow this behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198949 91177308-0d34-0410-b5e6-96231b3b80d8
* Amending test/MC/ARM/thumb2-mclass.s to match its apparent original purpose ↵Artyom Skrobov2014-01-10
| | | | | | (to test the ARMv6M/ARMv7M commonality), and creating a new test case for the differences between ARMv6M and ARMv7M git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198946 91177308-0d34-0410-b5e6-96231b3b80d8
* Must not produce Tag_CPU_arch_profile for pre-ARMv7 cores (e.g. cortex-m0)Artyom Skrobov2014-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198945 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: fix regression caused by r198914Saleem Abdulrasool2014-01-10
| | | | | | | | The disassembler would no longer be able to disambiguage between the two variants (explicit immediate #0 vs implicit, omitted #0) for the ldrt, strt, ldrbt, strbt mnemonics as both versions indicated the disassembler routine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198944 91177308-0d34-0410-b5e6-96231b3b80d8
* Silence unused variable warning for non-asserting builds that was introduced ↵Kristof Beyls2014-01-10
| | | | | | in r198937. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198941 91177308-0d34-0410-b5e6-96231b3b80d8
* Use 'w' instead of 'c' to represent the win32 mangling.Rafael Espindola2014-01-10
| | | | | | | This change was requested to avoid confusion if we ever support non windows coff systems. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198938 91177308-0d34-0410-b5e6-96231b3b80d8
* Make sure -use-init-array has intended effect on all AArch64 ELF targets, ↵Kristof Beyls2014-01-10
| | | | | | not just linux. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198937 91177308-0d34-0410-b5e6-96231b3b80d8
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