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* Produce .weak_def_can_be_hidden for some linkonce_odr valuesRafael Espindola2013-10-301-7/+20
| | | | | | | | | | | | | | With this patch llvm produces a weak_def_can_be_hidden for linkonce_odr if they are also unnamed_addr or don't have their address taken. There is not a lot of documentation about .weak_def_can_be_hidden, but from the old discussion about linkonce_odr_auto_hide and the name of the directive this looks correct: these symbols can be hidden. Testing this with the ld64 in Xcode 5 linking clang reduces the number of exported symbols from 21053 to 19049. llvm-svn: 193718
* DebugInfo: Push header handling down into CompileUnitDavid Blaikie2013-10-303-18/+29
| | | | | | | This is a preliminary step to handling type units by abstracting over all (type or compile) units. llvm-svn: 193714
* DwarfDebug: Change Abbreviations member from pointer to referenceDavid Blaikie2013-10-302-10/+10
| | | | llvm-svn: 193699
* Debug Info: code clean up.Manman Ren2013-10-292-3/+5
| | | | | | | | | | Use EmitLabelOffsetDifference for handling on darwin platform when non-darwin platforms use EmitLabelPlusOffset. Also fix a bug in EmitLabelOffsetDifference where the size is hard-coded to 4 even though Size is passed in as an argument. llvm-svn: 193660
* Debug Info: support for DW_FORM_ref_addr.Manman Ren2013-10-296-3/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | To support ref_addr, we calculate the section offset of a DIE (i.e. offset of a DIE from beginning of the debug info section). The Offset field in DIE is currently CU-relative. To calculate the section offset, we add a DebugInfoOffset field in CompileUnit to store the offset of a CU from beginning of the debug info section. We set the value in DwarfUnits::computeSizeAndOffset for each CompileUnit. A helper function DIE::getCompileUnit is added to return the CU DIE that the input DIE belongs to. We also add a map CUDieMap in DwarfDebug to help finding the CU for a given CU DIE. For a cross-referenced DIE, we first find the CU DIE it belongs to with getCompileUnit, then we use CUDieMap to get the corresponding CU for the CU DIE. Adding the section offset of the CU with the CU-relative offset of a DIE gives us the seciton offset of the DIE. We correctly emit ref_addr with relocation using EmitLabelPlusOffset when doesDwarfUseRelocationsAcrossSections is true. This commit handles the emission of DW_FORM_ref_addr when we have an attribute with FORM_ref_addr. A follow-on patch will start using ref_addr when adding a DIEEntry. This commit will be tested and verified in the follow-on patch. Reviewed off-list by Eric, Thanks. llvm-svn: 193658
* Debug Info: instead of calling addToContextOwner which constructs the contextManman Ren2013-10-292-21/+9
| | | | | | | | | | | | | | | after the DIE creation, we construct the context first. Ensure that we create the context before we create a type so that we can add the newly created type to the parent. Remove last use of addToContextOwner now that it's not needed. We use createAndAddDIE to wrap around "new DIE(". Now all shareable DIEs should be added to their parents right after the creation. Reviewed off-list by Eric, Thanks. llvm-svn: 193657
* Move getSymbol to TargetLoweringObjectFile.Rafael Espindola2013-10-291-2/+2
| | | | | | This allows constructing a Mangler with just a TargetMachine. llvm-svn: 193630
* Add a helper getSymbol to AsmPrinter.Rafael Espindola2013-10-294-14/+17
| | | | llvm-svn: 193627
* Debug Info: instead of calling addToContextOwner which constructs the contextManman Ren2013-10-291-7/+17
| | | | | | | | | | | | after the DIE creation, we construct the context first. This touches creation of namespaces and global variables. The purpose is to handle all DIE creations similarly: constructs the context first, then creates the DIE and immediately adds the DIE to its parent. We use createAndAddDIE to wrap around "new DIE(". llvm-svn: 193589
* Debug Info: use createAndAddDIE to wrap around "new DIE" in DwarfDebug.Manman Ren2013-10-291-6/+5
| | | | | | | | | This commit ensures DIEs are constructed within a compile unit and immediately added to their parents. Reviewed off-list by Eric. llvm-svn: 193568
* Debug Info: use createAndAddDIE for newly-created Subprogram DIEs.Manman Ren2013-10-291-9/+5
| | | | | | | | | | | More patches will be submitted to convert "new DIE(" to use createAddAndDIE in DwarfCompileUnit.cpp. This will simplify implementation of addDIEEntry where we have to decide between ref4 and ref_addr, because DIEs that can be shared across CU will be added to a CU already. Reviewed off-list by Eric. llvm-svn: 193567
* Debug Info: add a helper function createAndAddDIE.Manman Ren2013-10-292-29/+28
| | | | | | | | | | | | | | It wraps around "new DIE(" and handles the bookkeeping part of the newly-created DIE. It adds the DIE to its parent, and calls insertDIE if necessary. It makes sure that bookkeeping is done at the earliest time and we should not see parentless DIEs if all constructions of DIEs go through this helper function. Later on, we can use an allocator for DIE allocation, and will only need to change createAndAddDIE instead of modifying all the "new DIE(". Reviewed off-list by Eric. llvm-svn: 193566
* DIEHash: Summary hashing of member functionsDavid Blaikie2013-10-251-1/+1
| | | | llvm-svn: 193432
* DIEHash: Summary hashing of nested typesDavid Blaikie2013-10-252-1/+26
| | | | llvm-svn: 193427
* MCStreamer: Reimplement the virtual EmitRawText as a protected member, ↵David Blaikie2013-10-241-1/+1
| | | | | | | | | | EmitRawTextImpl, to avoid string literal ambiguities Also improve the implementation of EmitRawText(Twine) so it doesn't bother using the SmallString buffer if the Twine is a simple StringRef anyway. llvm-svn: 193378
* DWARF emission: Remove unnecessary/redundant DIE reference codeDavid Blaikie2013-10-241-7/+0
| | | | | | The default case at the end of the switch handles this just fine. llvm-svn: 193374
* Fix name of variable in comment.Eric Christopher2013-10-241-1/+1
| | | | llvm-svn: 193373
* Grammar.Eric Christopher2013-10-241-1/+1
| | | | llvm-svn: 193372
* Update misleading comment.Eric Christopher2013-10-241-2/+3
| | | | llvm-svn: 193371
* DIEHash: Const correct and use references where non-null/non-rebound.David Blaikie2013-10-243-49/+49
| | | | llvm-svn: 193363
* DIEHash: Do not use shallow type hashing for unnamed typesDavid Blaikie2013-10-241-4/+6
| | | | llvm-svn: 193361
* DIEHash: Refactor ref attribute hashing into smaller functionsDavid Blaikie2013-10-243-68/+98
| | | | llvm-svn: 193360
* Remove unused debug-only member variable.David Blaikie2013-10-241-4/+0
| | | | | | | This may've been used at some point but the 'print' member function grew an Indent parameter that entirely shadows this parameter. llvm-svn: 193358
* Debug Info: code clean up.Manman Ren2013-10-232-31/+23
| | | | | | | | | | | Since we never insert DIE for DITemplateTypeParameter to a map, there is no need to call getDIE in getOrCreateTemplateTypeParameterDIE. It is also renamed to constructTemplateTypeParameterDIE to match with other construct functions in CompileUnit. Same applies to getOrCreateTemplateValueParameterDIE. llvm-svn: 193287
* Debug Info: code clean up.Manman Ren2013-10-232-5/+5
| | | | | | | Rename createMemberDIE to constructMemberDIE to match other construct functions in CompileUnit. llvm-svn: 193286
* Debug Info: code clean up.Manman Ren2013-10-232-18/+12
| | | | | | | Remove the unneeded return values from createMemberDIE, constructEnumTypeDIE, getOrCreateTemplateTypeParameterDIE, and getOrCreateTemplateValueParameterDIE. llvm-svn: 193285
* Debug Info: code clean up.Manman Ren2013-10-232-18/+18
| | | | | | | | | Unifying the argument ordering of private construct functions in CompileUnit to follow constructTypeDIE(DIE &, DIBasicType), constructTypeDIE(DIE &, DIDerivedType), constructTypeDIE(DIE &, DICompositeType), constructSubrangeDIE and constructArrayTypeDIE. llvm-svn: 193284
* Remove {} from one-line block.Manman Ren2013-10-231-2/+1
| | | | llvm-svn: 193276
* Reduce casting and use a fully covered switch.Rafael Espindola2013-10-231-9/+14
| | | | llvm-svn: 193272
* Debug Info: code clean up.Manman Ren2013-10-221-7/+1
| | | | | | | | | | | Remove unnecessary creation of LexicalScope in collectDeadVariables. The created LexicialScope was only used to get isAbstractScope, which should be false from the creation: "new LexicalScope(NULL, DIDescriptor(SP), NULL, false);". We can also remove a DenseMap that holds the created LexicalScopes. llvm-svn: 193196
* DIEHashing: Provide an assert for unreachable functionality regarding friends.David Blaikie2013-10-221-0/+3
| | | | | | | | | | | | | Since (as of r190716) Clang no longer emits debug info for C++ friend declarations (and it seems GCC never has/does, which was the motivation for the Clang change), there's no actual reachable case for implementing the part of DWARF 4, Section 7.27 part 5 that pertains to friends. Leave an assert here so that if/when we do have a client producing friends and using type units, we can fill in the gap and add appropriate (unit and feature) tests. llvm-svn: 193193
* DWARF type hashing: pointers to membersDavid Blaikie2013-10-221-11/+14
| | | | | | | | | Includes a test case/FIXME demonstrating a bug/limitation in pointer to member hashing. To be honest I'm not sure why we don't just always use summary hashing for referenced types... but perhaps I'm missing something. llvm-svn: 193175
* Formatting/whitespace.Eric Christopher2013-10-221-4/+4
| | | | llvm-svn: 193135
* DWARF Type Hashing: Include reference and rvalue reference type in the ↵David Blaikie2013-10-211-1/+3
| | | | | | | | declarable summary hashing path More support for 7.25 Part 5. llvm-svn: 193129
* DWARF type hashing: begin implementing Step 5, summary hashing in declarable ↵David Blaikie2013-10-212-7/+39
| | | | | | | | | contexts There are several other tag types that need similar handling but to ensure test coverage they'll be coming incrementally. llvm-svn: 193126
* Fix CodeGen for different size address space GEPsMatt Arsenault2013-10-211-2/+2
| | | | llvm-svn: 193111
* Fix the build in DIE.cpp with MSVC 2010Reid Kleckner2013-10-211-3/+5
| | | | llvm-svn: 193106
* DWARF type hashing: Handle multiple (including recursive) references to the ↵David Blaikie2013-10-212-8/+21
| | | | | | | | | | same type This uses a map, keeping the type DIE numbering separate from the DIEs themselves - alternatively we could do things the way GCC does if we want to add an integer to the DIE type to record the numbering there. llvm-svn: 193105
* Fix up some old review feedback.Eric Christopher2013-10-211-2/+3
| | | | llvm-svn: 193095
* DebugInfo: Put each kind of constant (form, attribute, tag, etc) into its ↵David Blaikie2013-10-215-185/+208
| | | | | | | | | | | own enum for ease of use. This allows various variables to be more self-documenting and easier to debug by being of specific types without overlapping enum values. Precommit review by Eric Christopher. llvm-svn: 193091
* DebugInfo: Hash DW_FORM_GNU_str_index as a string.David Blaikie2013-10-211-1/+3
| | | | | | | | | | Found while adding type safety to the various DWARF enumerations (form, attribute, tag, etc) that caused Clang to warn on an incompletely covered switch. Converting the comment to a default/unreachable uncovered this case of an unsupported form encoding. Seems we were skipping fission strings entirely. llvm-svn: 193089
* Emit prefix data after debug and EH directives.Peter Collingbourne2013-10-201-4/+4
| | | | | | | | | This ensures that the prefix data is treated as part of the function for the purpose of debug info. This provides a better debugging experience, among other things by allowing a debug info client to correctly look up a function in debug info given a function pointer. llvm-svn: 193042
* Remove unused variable.Benjamin Kramer2013-10-191-2/+1
| | | | llvm-svn: 193038
* Reformat.Eric Christopher2013-10-191-80/+73
| | | | llvm-svn: 193024
* Fix up a few minor performance problems spotted in code review.Eric Christopher2013-10-191-7/+6
| | | | llvm-svn: 193023
* Debug Info: add a newly-created DIE to a parent in the same function.Manman Ren2013-10-182-24/+29
| | | | | | | | | | With this commit, all DIEs created in CompileUnit will be added to parents inside the same function. Also make getOrCreateTemplateType|Value functions private. No functionality change. llvm-svn: 193002
* Debug Info: simplify code a bit.Manman Ren2013-10-181-1/+1
| | | | llvm-svn: 193001
* Revert the rest of r192749 to bring back the buildbot. These twoEric Christopher2013-10-181-2/+4
| | | | | | error messages should not be able to occur at the same time. llvm-svn: 192985
* Temporarily revert r192749 as it is causing problems for LTO andEric Christopher2013-10-181-2/+8
| | | | | | requires a more in depth change to the IR structure. llvm-svn: 192938
* DIEHash: Add more things (and remove one character) from the COLLECT_ATTR macroDavid Blaikie2013-10-171-149/+53
| | | | | | | Makes the uses more terse and requires that they use a semicolon at the end that helps editors indent proceeding lines correctly. llvm-svn: 192925
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