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2013-01-07Switch TargetTransformInfo from an immutable analysis pass that requiresChandler Carruth
a TargetMachine to construct (and thus isn't always available), to an analysis group that supports layered implementations much like AliasAnalysis does. This is a pretty massive change, with a few parts that I was unable to easily separate (sorry), so I'll walk through it. The first step of this conversion was to make TargetTransformInfo an analysis group, and to sink the nonce implementations in ScalarTargetTransformInfo and VectorTargetTranformInfo into a NoTargetTransformInfo pass. This allows other passes to add a hard requirement on TTI, and assume they will always get at least on implementation. The TargetTransformInfo analysis group leverages the delegation chaining trick that AliasAnalysis uses, where the base class for the analysis group delegates to the previous analysis *pass*, allowing all but tho NoFoo analysis passes to only implement the parts of the interfaces they support. It also introduces a new trick where each pass in the group retains a pointer to the top-most pass that has been initialized. This allows passes to implement one API in terms of another API and benefit when some other pass above them in the stack has more precise results for the second API. The second step of this conversion is to create a pass that implements the TargetTransformInfo analysis using the target-independent abstractions in the code generator. This replaces the ScalarTargetTransformImpl and VectorTargetTransformImpl classes in lib/Target with a single pass in lib/CodeGen called BasicTargetTransformInfo. This class actually provides most of the TTI functionality, basing it upon the TargetLowering abstraction and other information in the target independent code generator. The third step of the conversion adds support to all TargetMachines to register custom analysis passes. This allows building those passes with access to TargetLowering or other target-specific classes, and it also allows each target to customize the set of analysis passes desired in the pass manager. The baseline LLVMTargetMachine implements this interface to add the BasicTTI pass to the pass manager, and all of the tools that want to support target-aware TTI passes call this routine on whatever target machine they end up with to add the appropriate passes. The fourth step of the conversion created target-specific TTI analysis passes for the X86 and ARM backends. These passes contain the custom logic that was previously in their extensions of the ScalarTargetTransformInfo and VectorTargetTransformInfo interfaces. I separated them into their own file, as now all of the interface bits are private and they just expose a function to create the pass itself. Then I extended these target machines to set up a custom set of analysis passes, first adding BasicTTI as a fallback, and then adding their customized TTI implementations. The fourth step required logic that was shared between the target independent layer and the specific targets to move to a different interface, as they no longer derive from each other. As a consequence, a helper functions were added to TargetLowering representing the common logic needed both in the target implementation and the codegen implementation of the TTI pass. While technically this is the only change that could have been committed separately, it would have been a nightmare to extract. The final step of the conversion was just to delete all the old boilerplate. This got rid of the ScalarTargetTransformInfo and VectorTargetTransformInfo classes, all of the support in all of the targets for producing instances of them, and all of the support in the tools for manually constructing a pass based around them. Now that TTI is a relatively normal analysis group, two things become straightforward. First, we can sink it into lib/Analysis which is a more natural layer for it to live. Second, clients of this interface can depend on it *always* being available which will simplify their code and behavior. These (and other) simplifications will follow in subsequent commits, this one is clearly big enough. Finally, I'm very aware that much of the comments and documentation needs to be updated. As soon as I had this working, and plausibly well commented, I wanted to get it committed and in front of the build bots. I'll be doing a few passes over documentation later if it sticks. Commits to update DragonEgg and Clang will be made presently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171681 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-28Move Target{Instr,Register}Info.cpp into lib/CodeGen.Jakob Stoklund Olesen
The Target library is not allowed to depend on the large CodeGen library, but the TRI and TII classes provide abstract interfaces that require both caller and callee to link to CodeGen. The implementation files for these classes provide default implementations of some of the hooks. These methods may need to reference CodeGen, so they belong in that library. We already have a number of methods implemented in the TargetInstrInfoImpl sub-class because of that. I will merge that class into the parent next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168758 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-28Remove TargetELFWriterInfo.Rafael Espindola
All the credit goes to Jan Voung for noticing it was dead! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166902 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-18Reapply the TargerTransformInfo changes, minus the changes to LSR and ↵Nadav Rotem
Lowerinvoke. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166248 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-18Temporarily revert the TargetTransform changes.Bob Wilson
The TargetTransform changes are breaking LTO bootstraps of clang. I am working with Nadav to figure out the problem, but I am reverting it for now to get our buildbots working. This reverts svn commits: 165665 165669 165670 165786 165787 165997 and I have also reverted clang svn 165741 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166168 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-10Add a new interface to allow IR-level passes to access codegen-specific ↵Nadav Rotem
information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165665 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-05Implement TargetData with the DataLayout class, this will allow LLVM ↵Micah Villmow
projects to transition to DataLayout without loosing functionality. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165318 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11Add a C binding to the Target and TargetMachine classes to allow for emittingDuncan Sands
binary and assembly. Patch by Carlo Kok. Emitting was inspired by but not based on the D llvm bindings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154493 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20Fix up the CMake build for the new files added in r146960, they'reChandler Carruth
likely to stay either way that discussion ends up resolving itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146966 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-15Move parts of lib/Target that use CodeGen into lib/CodeGen.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146702 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-10Refactor the implementation of the TargetOptions out of TargetMachine, takingNick Lewycky
the only parts of TM that depends on CodeGen headers with it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146334 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29build/CMake: Finish removal of add_llvm_library_dependencies.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145420 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04build/cmake: Coalesce the configuration time header include fragment generationDaniel Dunbar
for target definitions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143731 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24Move TargetRegistry and TargetSelect from Target to Support where they belong.Evan Cheng
These are strictly utilities for registering targets and components. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138450 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Rewrite the CMake build to use explicit dependencies between libraries,Chandler Carruth
specified in the same file that the library itself is created. This is more idiomatic for CMake builds, and also allows us to correctly specify dependencies that are missed due to bugs in the GenLibDeps perl script, or change from compiler to compiler. On Linux, this returns CMake to a place where it can relably rebuild several targets of LLVM. I have tried not to change the dependencies from the ones in the current auto-generated file. The only places I've really diverged are in places where I was seeing link failures, and added a dependency. The goal of this patch is not to start changing the dependencies, merely to move them into the correct location, and an explicit form that we can control and change when necessary. This also removes a serialization point in the build because we don't have to scan all the libraries before we begin building various tools. We no longer have a step of the build that regenerates a file inside the source tree. A few other associated cleanups fall out of this. This isn't really finished yet though. After talking to dgregor he urged switching to a single CMake macro to construct libraries with both sources and dependencies in the arguments. Migrating from the two macros to that style will be a follow-up patch. Also, llvm-config is still generated with GenLibDeps.pl, which means it still has slightly buggy dependencies. The internal CMake 'llvm-config-like' macro uses the correct explicitly specified dependencies however. A future patch will switch llvm-config generation (when using CMake) to be based on these deps as well. This may well break Windows. I'm getting a machine set up now to dig into any failures there. If anyone can chime in with problems they see or ideas of how to solve them for Windows, much appreciated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136433 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-23Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where ↵Evan Cheng
they belong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-22Move TargetRegistry.cpp from lib/Support to lib/Target where it belongs.Chandler Carruth
The header file was already properly located. The previous need for it in Support had to do with the version string printing which was fixed in r135757. Also update build dependencies where libraries that needed the functionality of the Target library (in the form of the TargetRegistry) were picking it up via Support. This is pretty pervasive, essentially every TargetInfo library (ARMInfo, etc) uses TargetRegistry, making it depend on Target. All of these were previously just sneaking by. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135760 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20Fix cmake again :)Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135613 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-09Revert accidental commit.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134800 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-09Change createAsmParser to take a MCSubtargetInfo instead of triple,Evan Cheng
CPU, and feature string. Parsing some asm directives can change subtarget state (e.g. .code 16) and it must be reflected in other modules (e.g. MCCodeEmitter). That is, the MCSubtargetInfo instance must be shared. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134795 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-01Rename TargetSubtarget to TargetSubtargetInfo for consistency.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134259 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29Fix CMake build.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134055 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-20Use explicit add_subdirectory's for LLVM target sublibraries insteadOscar Fuentes
of testing for its presence at cmake time. This way the build automatically regenerates the makefiles when a svn update brings in a new sublibrary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126068 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Move library stuff out of the toplevel CMakeLists.txt file.Oscar Fuentes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125968 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18introduce a new TargetLibraryInfo pass, which transformations can use toChris Lattner
query about available library functions. For now this just has memset_pattern16, which exists on darwin, but it can be extended for a bunch of other things in the future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125965 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-10Update CMake stuffAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123171 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Fixed version of 121434 with no new memory leaks.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121471 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Fix cmake build.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121462 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10lib/Target/CMakeLists.txt: Add missing lib/Target/TargetAsmInfo.cpp, ↵NAKAMURA Takumi
following up to r121434. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121454 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-13Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally."Michael J. Spencer
This reverts commit r113632 Conflicts: cmake/modules/AddLLVM.cmake git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113819 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-10CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113632 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02remove the remnants of TargetMachOWriterInfo.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95114 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-22add new fileChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94132 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-16Update CMake files for Mangler move.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93665 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26CMake: Removed outdated TODO.Oscar Fuentes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80124 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-22Update CMake build, unbreak linux build.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79779 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02remove the dead ELFTargetAsmInfo.h/cpp file. TargetAsmInfoChris Lattner
defaults to being ELF. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77866 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Rip all of the global variable lowering logic out of TargetAsmInfo. SinceChris Lattner
it is highly specific to the object file that will be generated in the end, this introduces a new TargetLoweringObjectFile interface that is implemented for each of ELF/MachO/COFF/Alpha/PIC16 and XCore. Though still is still a brutal and ugly refactoring, this is a major step towards goodness. This patch also: 1. fixes a bunch of dangling pointer problems in the PIC16 backend. 2. disables the TargetLowering copy ctor which PIC16 was accidentally using. 3. gets us closer to xcore having its own crazy target section flags and pic16 not having to shadow sections with its own objects. 4. fixes wierdness where ELF targets would set CStringSection but not CStringSection_. Factor the code better. 5. fixes some bugs in string lowering on ELF targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77294 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27Fix build.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77217 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Update CMake files.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76595 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Update CMakeLists for reapplication.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75825 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Fix cmake build, add TargetMachineRegistry.cpp that got restored in r75807Xerxes Ranby
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75817 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Fix cmake build lib/Target/TargetMachineRegistry.cpp removed.Xerxes Ranby
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75779 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-11Use forward declarations and move TargetELFWriterInfo impl to a new file.Bruno Cardoso Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73209 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-22Initial support for the CMake build system.Oscar Fuentes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56419 91177308-0d34-0410-b5e6-96231b3b80d8
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