summaryrefslogtreecommitdiffstats
path: root/llvm/lib/Linker/LinkModules.cpp
Commit message (Collapse)AuthorAgeFilesLines
* Add static cast to unsigned char whenever a character classification ↵Guy Benyei2013-02-121-1/+2
| | | | | | function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration. llvm-svn: 175006
* [IR] Add 'Append' and 'AppendUnique' module flag behaviors.Daniel Dunbar2013-01-161-0/+28
| | | | llvm-svn: 172659
* [Linker] Change module flag linking to be more extensible.Daniel Dunbar2013-01-161-133/+97
| | | | | | | | | | - Instead of computing a bunch of buckets of different flag types, just do an incremental link resolving conflicts as they arise. - This also has the advantage of making the link result deterministic and not dependent on map iteration order. llvm-svn: 172634
* [Linker] Drop asserts that are embedded in cast<> and now checked by the ↵Daniel Dunbar2013-01-151-11/+0
| | | | | | verifier. llvm-svn: 172550
* Fix a copy/paste error in the IR Linker, casting an ArrayType instead of a ↵Joey Gouly2013-01-101-1/+1
| | | | | | VectorType. llvm-svn: 172054
* Move TypeFinder.h into the IR tree, it clearly belongs with the IR library.Chandler Carruth2013-01-071-1/+1
| | | | llvm-svn: 171749
* Move all of the header files which are involved in modelling the LLVM IRChandler Carruth2013-01-021-4/+4
| | | | | | | | | | | | | | | | | | | | | into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. llvm-svn: 171366
* Use the new script to sort the includes of every file under lib.Chandler Carruth2012-12-031-6/+6
| | | | | | | | | | | | | | | | | Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] llvm-svn: 169131
* Remove the dependent libraries feature.Bill Wendling2012-11-271-13/+0
| | | | | | The dependent libraries feature was never used and has bit-rotted. Remove it. llvm-svn: 168694
* Move the "findUsedStructTypes" functionality outside of the Module class.Bill Wendling2012-08-031-4/+5
| | | | | | | | | The "findUsedStructTypes" method is very expensive to run. It needs to be optimized so that LTO can run faster. Splitting this method out of the Module class will help this occur. For instance, it can keep a list of seen objects so that it doesn't process them over and over again. llvm-svn: 161228
* Extend the IL for selecting TLS models (PR9788)Hans Wennborg2012-06-231-2/+2
| | | | | | | | | | | | | | | This allows the user/front-end to specify a model that is better than what LLVM would choose by default. For example, a variable might be declared as @x = thread_local(initialexec) global i32 42 if it will not be used in a shared library that is dlopen'ed. If the specified model isn't supported by the target, or if LLVM can make a better choice, a different model may be used. llvm-svn: 159077
* Supply a C interface to the "LinkModules" method.Bill Wendling2012-05-091-0/+15
| | | | | | Patch by Andrew Wilkins! llvm-svn: 156469
* Add a flag to the struct type finder to collect only those types which haveBill Wendling2012-04-211-2/+2
| | | | | | names. This saves collecting types we normally don't care about. llvm-svn: 155300
* It's possible for two types, which are isomorphic, to be added to theBill Wendling2012-03-231-6/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | destination module, but one of them isn't used in the destination module. If another module comes along and the uses the unused type, there could be type conflicts when the modules are finally linked together. (This happened when building LLVM.) The test that was reduced is: Module A: %Z = type { %A } %A = type { %B.1, [7 x x86_fp80] } %B.1 = type { %C } %C = type { i8* } declare void @func_x(%C*, i64, i64) declare void @func_z(%Z* nocapture) Module B: %B = type { %C.1 } %C.1 = type { i8* } %A.2 = type { %B.3, [5 x x86_fp80] } %B.3 = type { %C.1 } define void @func_z() { %x = alloca %A.2, align 16 %y = getelementptr inbounds %A.2* %x, i64 0, i32 0, i32 0 call void @func_x(%C.1* %y, i64 37, i64 927) nounwind ret void } declare void @func_x(%C.1*, i64, i64) declare void @func_y(%B* nocapture) (Unfortunately, this test doesn't fail under llvm-link, only during an LTO linking.) The '%C' and '%C.1' clash. The destination module gets the '%C' declaration. When merging Module B, it looks at the '%C.1' subtype of the '%B' structure. It adds that in, because that's cool. And when '%B.3' is processed, it uses the '%C.1'. But the '%B' has used '%C' and we prefer to use '%C'. So the '@func_x' type is changed to 'void (%C*, i64, i64)', but the type of '%x' in '@func_z' remains '%A.2'. The GEP resolves to a '%C.1', which conflicts with the '@func_x' signature. We can resolve this situation by making sure that the type is used in the destination before saying that it should be used in the module being merged in. With this fix, LLVM and Clang both compile under LTO. <rdar://problem/10913281> llvm-svn: 153351
* Ignore the last message.Bill Wendling2012-03-231-1/+3
| | | | llvm-svn: 153315
* Revert patch. It broke the build.Bill Wendling2012-03-231-3/+1
| | | | llvm-svn: 153314
* Dematerialize the source functions after we're done with them. This saves a bitBill Wendling2012-03-231-1/+3
| | | | | | of memory during LTO. llvm-svn: 153313
* Some whitespace and comment cleanup.Bill Wendling2012-03-221-5/+0
| | | | llvm-svn: 153278
* Remove unneeded #ifdefs.Bill Wendling2012-03-221-3/+1
| | | | llvm-svn: 153277
* Add a 'dump' method to the type map. Doxygenify some of the comments and add aBill Wendling2012-03-221-23/+36
| | | | | | | | few comments where none existed before. Also change a function's name to match the current coding standard. No functionality change. llvm-svn: 153276
* Include cctype for isdigit. Patch by Stephen Hines.Duncan Sands2012-03-031-0/+1
| | | | llvm-svn: 151973
* Oops...Don't commit the other stuff..Bill Wendling2012-02-281-44/+29
| | | | llvm-svn: 151618
* Modify comment to reflect the importance of this code.Bill Wendling2012-02-281-29/+44
| | | | llvm-svn: 151617
* Add back removed code. It still causes LLVM to miscompile. But not having it ↵Bill Wendling2012-02-271-0/+30
| | | | | | breaks other things. llvm-svn: 151594
* Don't use #if 0. Just remove until I can address this.Bill Wendling2012-02-271-35/+0
| | | | llvm-svn: 151580
* The code that cleans up multiple, isomorphic types has a subtle error thatBill Wendling2012-02-271-3/+7
| | | | | | | manifests itself when building LLVM with LTO. <rdar://problem/10913281> llvm-svn: 151576
* Capitalize messages so that they appear nicely with the linker's error messages.Bill Wendling2012-02-141-9/+9
| | | | llvm-svn: 150466
* [WIP] Initial code for module flags.Bill Wendling2012-02-111-5/+186
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Module flags are key-value pairs associated with the module. They include a 'behavior' value, indicating how module flags react when mergine two files. Normally, it's just the union of the two module flags. But if two module flags have the same key, then the resulting flags are dictated by the behaviors. Allowable behaviors are: Error Emits an error if two values disagree. Warning Emits a warning if two values disagree. Require Emits an error when the specified value is not present or doesn't have the specified value. It is an error for two (or more) llvm.module.flags with the same ID to have the Require behavior but different values. There may be multiple Require flags per ID. Override Uses the specified value if the two values disagree. It is an error for two (or more) llvm.module.flags with the same ID to have the Override behavior but different values. llvm-svn: 150300
* Convert assert(0) to llvm_unreachableCraig Topper2012-02-071-1/+1
| | | | llvm-svn: 149967
* use Constant::getAggregateElement to simplify a bunch of code.Chris Lattner2012-01-251-15/+4
| | | | llvm-svn: 148934
* add more support for ConstantDataSequentialChris Lattner2012-01-241-18/+21
| | | | llvm-svn: 148802
* Link symbols with different visibilities according to the rules in theRafael Espindola2012-01-051-24/+54
| | | | | | | | System V Application Binary Interface. This lets us use -fvisibility-inlines-hidden with LTO. Fixes PR11697. llvm-svn: 147624
* When not destroying the source, the linker is not remapping the types. Added ↵Mon P Wang2011-12-231-1/+1
| | | | | | | | support to CloneFunctionInto to allow remapping for this case. llvm-svn: 147217
* Fix a nasty bug in the type remapping stuff that I added that is breaking ↵Chris Lattner2011-12-201-1/+8
| | | | | | | | | | | | | | | | kc++ on the build bot in some cases. The basic issue happens when a source module contains both a "%foo" type and a "%foo.42" type. It will see the later one, check to see if the destination module contains a "%foo" type, and it will return true... because both the source and destination modules are in the same LLVMContext. We don't want to map source types to other source types, so don't do the remapping if the mapped type came from the source module. Unfortunately, I've been unable to reduce a decent testcase for this, kc++ is pretty great that way. llvm-svn: 147010
* Now that PR11464 is fixed, reapply the patch to fix PR11464, Chris Lattner2011-12-201-0/+25
| | | | | | | | merging types by name when we can. We still don't guarantee type name linkage but we do it when obviously the right thing to do. This makes LTO type names easier to read, for example. llvm-svn: 146932
* fix PR11464 by preventing the linker from mapping two different struct types ↵Chris Lattner2011-12-201-12/+27
| | | | | | from the source module onto the same opaque destination type. An opaque type can only be resolved to one thing or another after all. llvm-svn: 146929
* Revert 146728 as it's causing failures on some of the external bots as well as Chad Rosier2011-12-171-25/+0
| | | | | | | | | | | internal nightly testers. Original commit message: By popular demand, link up types by name if they are isomorphic and one is an autorenamed version of the other. This makes the IR easier to read, because we don't end up with random renamed versions of the types after LTO'ing a large app. llvm-svn: 146838
* By popular demand, link up types by name if they are isomorphic and one is anChris Lattner2011-12-161-0/+25
| | | | | | | autorenamed version of the other. This makes the IR easier to read, because we don't end up with random renamed versions of the types after LTO'ing a large app. llvm-svn: 146728
* Add support to the linker to lazily link in functions. This change only ↵Tanya Lattner2011-11-021-0/+58
| | | | | | links functions marked with specific linkage (internal, private, linker_private, linker_private_weak, linker_private_weak_def_auto, linkonce, linkonce_odr, and available_externally) if they have uses in the destination module. Instead of automatically linking, these functions are placed onto a worklist to be processed in the final stage of linking. We iterate over the list and if any functions on the list have uses in the destination module, we link them in and repeat the process until no changes in the state (uses) has changed. This means that any functions in the LazilyLink worklist that have a use in the destination module will be linked in and none that don't. llvm-svn: 143524
* Teach ModuleLinker::getLinkageResult about materialisable functionsPeter Collingbourne2011-10-301-1/+1
| | | | llvm-svn: 143316
* Allow the source module to be materialized during the linking process.Tanya Lattner2011-10-141-2/+11
| | | | llvm-svn: 142010
* Make it possible to use the linker without destroying the source module. ↵Tanya Lattner2011-10-111-30/+55
| | | | | | | | | | | | | | This is so the source module can be linked to multiple other destination modules. For all that used LinkModules() before, they will continue to destroy the source module as before. This line, and those below, will be ignored-- M include/llvm/Linker.h M tools/bugpoint/Miscompilation.cpp M tools/bugpoint/BugDriver.cpp M tools/llvm-link/llvm-link.cpp M lib/Linker/LinkModules.cpp llvm-svn: 141606
* switch to the new struct api.Chris Lattner2011-08-121-3/+3
| | | | llvm-svn: 137482
* Linke NamedMDNodes after linking global values as comment suggests.Devang Patel2011-08-041-5/+5
| | | | llvm-svn: 136909
* Migrate LLVM and Clang to use the new makeArrayRef(...) functions where ↵Frits van Bommel2011-07-181-1/+1
| | | | | | | | previously explicit non-default constructors were used. Mostly mechanical with some manual reformatting. llvm-svn: 135390
* Link NamedMDNode before linking function bodies.Devang Patel2011-07-141-5/+5
| | | | llvm-svn: 135204
* simplify this logic now that GlobalAlias::isDeclaration is fixed.Chris Lattner2011-07-141-4/+2
| | | | llvm-svn: 135183
* Land the long talked about "type system rewrite" patch. ThisChris Lattner2011-07-091-1074/+742
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | patch brings numerous advantages to LLVM. One way to look at it is through diffstat: 109 files changed, 3005 insertions(+), 5906 deletions(-) Removing almost 3K lines of code is a good thing. Other advantages include: 1. Value::getType() is a simple load that can be CSE'd, not a mutating union-find operation. 2. Types a uniqued and never move once created, defining away PATypeHolder. 3. Structs can be "named" now, and their name is part of the identity that uniques them. This means that the compiler doesn't merge them structurally which makes the IR much less confusing. 4. Now that there is no way to get a cycle in a type graph without a named struct type, "upreferences" go away. 5. Type refinement is completely gone, which should make LTO much MUCH faster in some common cases with C++ code. 6. Types are now generally immutable, so we can use "Type *" instead "const Type *" everywhere. Downsides of this patch are that it removes some functions from the C API, so people using those will have to upgrade to (not yet added) new API. "LLVM 3.0" is the right time to do this. There are still some cleanups pending after this, this patch is large enough as-is. llvm-svn: 134829
* Set the unnamed_addr only when we're creating a new GV in the dest module.Bill Wendling2011-03-291-0/+1
| | | | llvm-svn: 128507
* Revert r128501. It caused test failures.Bill Wendling2011-03-291-1/+0
| | | | llvm-svn: 128506
OpenPOWER on IntegriCloud