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* Create a MCSymbolELF.Rafael Espindola2015-06-021-3/+3
| | | | | | | | | This create a MCSymbolELF class and moves SymbolSize since only ELF needs a size expression. This reduces the size of MCSymbol from 56 to 48 bytes. llvm-svn: 238801
* [WinCOFF] Add support for the .safeseh directiveDavid Majnemer2015-05-301-0/+17
| | | | | | | | | .safeseh adds an entry to the .sxdata section to register all the appropriate functions which may handle an exception. This entry is not a relocation to the symbol but instead the symbol table index of the function. llvm-svn: 238641
* MC: Clean up MCExpr naming. NFC.Jim Grosbach2015-05-302-19/+19
| | | | llvm-svn: 238634
* Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial typesBenjamin Kramer2015-05-291-4/+3
| | | | | | | | | | | | | | | | | | | | If the type isn't trivially moveable emplace can skip a potentially expensive move. It also saves a couple of characters. Call sites were found with the ASTMatcher + some semi-automated cleanup. memberCallExpr( argumentCountIs(1), callee(methodDecl(hasName("push_back"))), on(hasType(recordDecl(has(namedDecl(hasName("emplace_back")))))), hasArgument(0, bindTemporaryExpr( hasType(recordDecl(hasNonTrivialDestructor())), has(constructExpr()))), unless(isInTemplateInstantiation())) No functional change intended. llvm-svn: 238602
* There is only one current section.Rafael Espindola2015-05-272-6/+10
| | | | | | | | | | | | | | | | | Both MCStreamer and MCObjectStreamer were maintaining a current section variable and they were slightly out of sync. I don't think this was observable, but was inefficient and error prone. Changing this requires a few cascading changes: * SwitchSection has to call ChangeSection earlier for ChangeSection to see the old section. * With that change, ChangeSection cannot call EmitLabel, since during ChangeSection we are still in the old section. * When the object streamer requires a begin label, just reused the existing generic support for begin labels instead of calling EmitLabel directly. llvm-svn: 238357
* Move alignment from MCSectionData to MCSection.Rafael Espindola2015-05-212-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. llvm-svn: 237936
* Fix warning on builds without asserts.Rafael Espindola2015-05-211-0/+1
| | | | llvm-svn: 237915
* Remove yet another method of creating begin and end symbol for sections.Rafael Espindola2015-05-212-7/+7
| | | | | | I missed this one when first unifying how we handle begin and end symbols. llvm-svn: 237912
* Use existing helper for adding a section. NFC.Rafael Espindola2015-05-211-3/+1
| | | | llvm-svn: 237909
* MC: Clean up method names in MCContext.Jim Grosbach2015-05-184-32/+32
| | | | | | | The naming was a mish-mash of old and new style. Update to be consistent with the new. NFC. llvm-svn: 237594
* [MC] Split MCBinaryExpr::Shr into LShr and AShr.Ahmed Bougacha2015-04-281-1/+1
| | | | | | | | Defaulting to AShr without consulting the target MCAsmInfo isn't OK. Add a flag to fix that. Keep it off for now: target migrations will follow in separate commits. llvm-svn: 235951
* [MC] Move getBinOpPrecedence into AsmParser. NFC.Ahmed Bougacha2015-04-281-2/+5
| | | | | | In preparation for a future patch. llvm-svn: 235950
* [MC] [IAS] Add support for the \@ .macro pseudo-variable.Toma Tabacu2015-04-271-29/+53
| | | | | | | | | | | | | | | | | | Summary: When used, it is substituted with the number of .macro instantiations we've done up to that point in time. So if this is the 1st time we've instantiated a .macro (any .macro, regardless of name), \@ will instantiate to 0, if it's the 2nd .macro instantiation, it will instantiate to 1 etc. It can only be used inside a .macro definition, an .irp definition or an .irpc definition (those last 2 uses are undocumented). Reviewers: echristo, rafael Reviewed By: rafael Subscribers: dsanders, llvm-commits Differential Revision: http://reviews.llvm.org/D9197 llvm-svn: 235862
* [mips] [IAS] Implement the .asciiz directive.Toma Tabacu2015-04-211-0/+4
| | | | | | | | | | | | | | | | Summary: This directive is exactly the same as .asciz, except it's only used by MIPS. It is used to store null terminated strings in object files. Reviewers: rafael, dsanders, echristo Reviewed By: dsanders, echristo Subscribers: echristo, llvm-commits Differential Revision: http://reviews.llvm.org/D7530 llvm-svn: 235382
* Use 'override/final' instead of 'virtual' for overridden methodsAlexander Kornienko2015-04-111-1/+1
| | | | | | | | | | | | | | The patch is generated using clang-tidy misc-use-override check. This command was used: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py \ -checks='-*,misc-use-override' -header-filter='llvm|clang' \ -j=32 -fix -format http://reviews.llvm.org/D8925 llvm-svn: 234679
* Use a comma after the unique keyword.Rafael Espindola2015-04-061-0/+3
| | | | | | | | H.J. Lu noted that all .section options are separated by a comma. This patch changes the syntax of unique to require one. llvm-svn: 234174
* Implement unique sections with an unique ID.Rafael Espindola2015-04-041-3/+8
| | | | | | | | | | | This allows the compiler/assembly programmer to switch back to a section. This in turn fixes the bootstrap failure on powerpc (tested on gcc110) without changing the ppc codegen at all. I will try to cleanup the various getELFSection overloads in a followup patch. Just using a default argument now would lead to ambiguities. llvm-svn: 234099
* Remove more superfluous .str() and replace std::string concatenation with Twine.Yaron Keren2015-03-301-1/+1
| | | | | | Following r233392, http://llvm.org/viewvc/llvm-project?rev=233392&view=rev. llvm-svn: 233555
* Add support for .ifnes psuedo-op.Sid Manning2015-03-181-10/+22
| | | | llvm-svn: 232636
* Fix uses of reserved identifiers starting with an underscore followed by an ↵David Blaikie2015-03-162-6/+6
| | | | | | | | | uppercase letter This covers essentially all of llvm's headers and libs. One or two weird cases I wasn't sure were worth/appropriate to fix. llvm-svn: 232394
* Simplify expressions involving boolean constants with clang-tidyDavid Blaikie2015-03-092-2/+2
| | | | | | | | Patch by Richard (legalize at xmission dot com). Differential Revision: http://reviews.llvm.org/D8154 llvm-svn: 231617
* MC: Allow multiple comma-separated expressions on the .uleb128 directive.Benjamin Kramer2015-02-191-9/+15
| | | | | | | For compatiblity with GNU as. Binutils documents this as '.uleb128 expressions'. Subtle, isn't it? llvm-svn: 229911
* Add r228980 back.Rafael Espindola2015-02-171-2/+12
| | | | | | | | | | Add support for having multiple sections with the same name and comdat. Using this in combination with -ffunction-sections allows LLVM to output a .o file with mulitple sections named .text. This saves space by avoiding long unique names of the form .text.<C++ mangled name>. llvm-svn: 229541
* Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for ↵Aaron Ballman2015-02-151-2/+2
| | | | | | requiring the macro. NFC; LLVM edition. llvm-svn: 229340
* Revert a series of commits starting at r228886 which is triggering someChandler Carruth2015-02-131-12/+2
| | | | | | | | | | | | | | | | regressions for LLDB on Linux. Rafael indicated on lldb-dev that we should just go ahead and revert these but that he wasn't at a computer. The patches backed out are as follows: r228980: Add support for having multiple sections with the name and ... r228889: Invert the section relocation map. r228888: Use the existing SymbolTableIndex intsead of doing a lookup. r228886: Create the Section -> Rel Section map when it is first needed. These patches look pretty nice to me, so hoping its not too hard to get them re-instated. =D llvm-svn: 229080
* Add support for having multiple sections with the same name and comdat.Rafael Espindola2015-02-121-2/+12
| | | | | | | | Using this in combination with -ffunction-sections allows LLVM to output a .o file with mulitple sections named .text. This saves space by avoiding long unique names of the form .text.<C++ mangled name>. llvm-svn: 228980
* Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.Zachary Turner2015-02-111-0/+3
| | | | | | | | | | This allows IDEs to recognize the entire set of header files for each of the core LLVM projects. Differential Revision: http://reviews.llvm.org/D7526 Reviewed By: Chris Bieneman llvm-svn: 228798
* Compute the ELF SectionKind from the flags.Rafael Espindola2015-01-291-42/+4
| | | | | | | | | | | | Any code creating an MCSectionELF knows ELF and already provides the flags. SectionKind is an abstraction used by common code that uses a plain MCSection. Use the flags to compute the SectionKind. This removes a lot of guessing and boilerplate from the MCSectionELF construction. llvm-svn: 227476
* Replace size method call of containers to empty method where appropriateAlexander Kornienko2015-01-151-1/+1
| | | | | | | | | | | | | | | | This patch was generated by a clang tidy checker that is being open sourced. The documentation of that checker is the following: /// The emptiness of a container should be checked using the empty method /// instead of the size method. It is not guaranteed that size is a /// constant-time function, and it is generally more efficient and also shows /// clearer intent to use empty. Furthermore some containers may implement the /// empty method but not implement the size method. Using empty whenever /// possible makes it easier to switch to another container in the future. Patch by Gábor Horváth! llvm-svn: 226161
* MC: Label definitions are permitted after .set directivesDavid Majnemer2014-12-241-0/+5
| | | | | | | | | .set directives may be overridden by other .set directives as well as label definitions. This fixes PR22019. llvm-svn: 224811
* IAS: correct debug line info for asm macrosSaleem Abdulrasool2014-12-241-4/+8
| | | | | | | | | | | | | | | | | Correct the line information generation for preprocessed assembly. Although we tracked the source information for the macro instantiation, we failed to account for the fact that we were instantiating a macro, which is populated into a new buffer and that the line information would be relative to the definition rather than the actual instantiation location. This could cause the line number associated with the statement to be very high due to wrapping of the difference calculated for the preprocessor line information emitted into the stream. Properly calculate the line for the macro instantiation, referencing the line where the macro is actually used as GCC/gas do. The test case uses x86, though the same problem exists on any other target using the LLVM IAS. llvm-svn: 224810
* Clean up static analyzer warnings.Michael Ilseman2014-12-121-4/+4
| | | | | | | | | Clang's static analyzer found several potential cases of undefined behavior, use of un-initialized values, and potentially null pointer dereferences in tablegen, Support, MC, and ADT. This cleans them up with specific assertions on the assumptions of the code. llvm-svn: 224154
* Allow target to specify prefix for labelsMatt Arsenault2014-12-041-1/+1
| | | | | | | | Use the MCAsmInfo instead of the DataLayout, and allow specifying a custom prefix for labels specifically. HSAIL requires that labels begin with @, but global symbols with &. llvm-svn: 223323
* Add const. NFC.Rafael Espindola2014-11-111-1/+1
| | | | | | | This adds const to a few methods that already return const references or creates a const version when they reterun non-const references. llvm-svn: 221666
* Revert r221150, as it broke sanitizer testsOliver Stannard2014-11-031-9/+2
| | | | llvm-svn: 221151
* Emit .eh_frame with relocations to functions, rather than sectionsOliver Stannard2014-11-031-2/+9
| | | | | | | | | | | | | | | | | | | | | | | When LLVM emits DWARF call frame information, it currently creates a local, section-relative symbol in the code section, which is pointed to by a relocation on the .eh_frame section. However, for C++ we emit some functions in section groups, and the SysV ABI has some rules to make it easier to remove these sections (http://www.sco.com/developers/gabi/latest/ch4.sheader.html#section_group_rules): A symbol table entry with STB_LOCAL binding that is defined relative to one of a group's sections, and that is contained in a symbol table section that is not part of the group, must be discarded if the group members are discarded. References to this symbol table entry from outside the group are not allowed. This means that we need to use the function symbol for the relocation, not a temporary symbol. There was a comment in the code claiming that the local symbol was used to avoid creating a relocation, but a relocation must be created anyway as the code and CFI are in different sections. llvm-svn: 221150
* Simplify handling of --noexecstack by using getNonexecutableStackSection.Rafael Espindola2014-10-151-2/+2
| | | | llvm-svn: 219799
* MCParser: Modernize memory handling.Benjamin Kramer2014-10-031-37/+22
| | | | | | NFC. llvm-svn: 218998
* [mips] Print warning when using register names not available in N32/64Daniel Sanders2014-10-031-0/+4
| | | | | | | | | | | | | | | | | | | Summary: The register names t4-t7 are not available in the N32 and N64 ABIs. This patch prints a warning, when those names are used in N32/64, along with a fix-it with the correct register names. Patch by Vasileios Kalintiris Reviewers: dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D5272 llvm-svn: 218989
* Downgrade DWARF2 section limit error to a warningOliver Stannard2014-09-221-1/+1
| | | | | | | | | We currently emit an error when trying to assemble a file with more than one section using DWARF2 debug info. This should be a warning instead, as the resulting file will still be usable, but with a degraded debug illusion. llvm-svn: 218241
* ms-inline-asm: Add a sema callback for looking up label namesEhsan Akhgari2014-09-221-6/+18
| | | | | | | | | | | | | | | The implementation of the callback in clang's Sema will return an internal name for labels. Test Plan: Will be tested in clang. Reviewers: rnk Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4587 llvm-svn: 218229
* Fix left shifts by too large exponents in MCParserAlexey Samsonov2014-09-021-7/+8
| | | | | | | | (which happened only on error recovery path). This bug was reported by UBSan. llvm-svn: 216915
* Return a std::unique_ptr when creating a new MemoryBuffer.Rafael Espindola2014-08-271-4/+4
| | | | llvm-svn: 216583
* Remove unused argument.Rafael Espindola2014-08-271-9/+6
| | | | llvm-svn: 216580
* Convert MC command line option for fatal assembler warnings into aJoerg Sonnenberger2014-08-261-5/+1
| | | | | | proper flag. llvm-svn: 216471
* Modernize raw_fd_ostream's constructor a bit.Rafael Espindola2014-08-251-4/+4
| | | | | | | | | | Take a StringRef instead of a "const char *". Take a "std::error_code &" instead of a "std::string &" for error. A create static method would be even better, but this patch is already a bit too big. llvm-svn: 216393
* Explicitly pass ownership of the MemoryBuffer to AddNewSourceBuffer using ↵David Blaikie2014-08-211-6/+6
| | | | | | std::unique_ptr llvm-svn: 216223
* Don't allow MCStreamer::EmitIntValue to output 0-byte integers.Alexey Samsonov2014-08-201-1/+2
| | | | | | | | It makes no sense and can hide bugs. In particular, it lead to left shift by 64 bits, which is an undefined behavior, properly reported by UBSan. llvm-svn: 216134
* TableGen: allow use of uint64_t for available features mask.Tim Northover2014-08-181-1/+1
| | | | | | | | | | ARM in particular is getting dangerously close to exceeding 32 bits worth of possible subtarget features. When this happens, various parts of MC start to fail inexplicably as masks get truncated to "unsigned". Mostly just refactoring at present, and there's probably no way to test. llvm-svn: 215887
* Remove unused member variable.Rafael Espindola2014-08-171-10/+7
| | | | llvm-svn: 215860
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