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* Support -fdebug-prefix-map in llvm-mc. This is useful to omit thePaul Robinson2018-07-101-0/+9
| | | | | | | | | | | debug compilation dir when compiling assembly files with -g. Part of PR38050. Patch by Siddhartha Bagaria! Differential Revision: https://reviews.llvm.org/D48988 llvm-svn: 336680
* [DWARFv5] llvm-mc -dwarf-version does not imply -g.Paul Robinson2018-06-121-1/+1
| | | | | | | | | | | | | Don't provide the assembler source as the "root file" unless the user asked to have debug info for the assembler source (with -g). If the source doesn't provide an explicit ".file 0" then (a) use the compilation directory as directory #0, and (b) use the file #1 info for file #0 also. Differential Revision: https://reviews.llvm.org/D48055 llvm-svn: 334512
* MC: Introduce an ELF dwo object writer and teach llvm-mc about it.Peter Collingbourne2018-05-211-13/+30
| | | | | | | | Part of PR37466. Differential Revision: https://reviews.llvm.org/D47051 llvm-svn: 332875
* MC: Change the streamer ctors to take an object writer instead of a stream. ↵Peter Collingbourne2018-05-181-3/+4
| | | | | | | | | | | | | | NFCI. The idea is that a client that wants split dwarf would create a specific kind of object writer that creates two files, and use it to create the streamer. Part of PR37466. Differential Revision: https://reviews.llvm.org/D47050 llvm-svn: 332749
* [MC] Change AsmParser to leverage Assembler during evaluationNirav Dave2018-04-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Teach AsmParser to check with Assembler for when evaluating constant expressions. This improves the handing of preprocessor expressions that must be resolved at parse time. This idiom can be found as assembling-time assertion checks in source-level assemblers. Note that this relies on the MCStreamer to keep sufficient tabs on Section / Fragment information which the MCAsmStreamer does not. As a result the textual output may fail where the equivalent object generation would pass. This can most easily be resolved by folding the MCAsmStreamer and MCObjectStreamer together which is planned for in a separate patch. Currently, this feature is only enabled for assembly input, keeping IR compilation consistent between assembly and object generation. Reviewers: echristo, rnk, probinson, espindola, peter.smith Reviewed By: peter.smith Subscribers: eraman, peter.smith, arichardson, jyknight, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D45164 llvm-svn: 331218
* [MC] Undo spurious commit added into r331052.Nirav Dave2018-04-271-3/+0
| | | | llvm-svn: 331055
* [MC] Provide default value for IsResolved.Nirav Dave2018-04-271-0/+3
| | | | llvm-svn: 331052
* [MC] Modify MCAsmStreamer to always build MCAssembler. NFCI.Nirav Dave2018-04-271-9/+10
| | | | llvm-svn: 331048
* [llvm-mc] Make error handling more consistent.Jonas Devlieghere2018-04-221-11/+14
| | | | | | Makes error handling more consistent by using the helpers in support. llvm-svn: 330536
* Define InitLLVM to do common initialization all at once.Rui Ueyama2018-04-131-7/+2
| | | | | | | | | | | We have a few functions that virtually all command wants to run on process startup/shutdown. This patch adds InitLLVM class to do that all at once, so that we don't need to copy-n-paste boilerplate code to each llvm command's main() function. Differential Revision: https://reviews.llvm.org/D45602 llvm-svn: 330046
* Rename *CommandFlags.def to *CommandFlags.incDavid Blaikie2018-04-111-1/+1
| | | | | | | | These aren't the .def style files used in LLVM that require a macro defined before their inclusion - they're just basic non-modular includes to stamp out command line flag variables. llvm-svn: 329840
* Reapply "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-291-0/+12
| | | | | | | | | | | | | | | | | DWARF v5 specifies that the root file (also given in the DW_AT_name attribute of the compilation unit DIE) should be emitted explicitly to the line table's list of files. This makes the line table more independent of the .debug_info section. We emit the new syntax only for DWARF v5 and later. Fixes the bug found by asan. Also XFAIL the new test for Darwin, which is stuck on DWARF v2, and fix up other tests so they stop failing on Windows. Last but not least, don't break "clang -g" of an assembler file that has .file directives in it. Differential Revision: https://reviews.llvm.org/D44054 llvm-svn: 328805
* Revert "Reapply "[DWARFv5] Emit file 0 to the line table.""Alexander Potapenko2018-03-281-12/+0
| | | | | | | | | | | | | | | This reverts commit r328676. Commit r328676 broke the -no-integrated-as flag necessary to build Linux kernel with Clang: $ cat t.c void foo() {} $ clang -no-integrated-as -c t.c -g /tmp/t-dcdec5.s: Assembler messages: /tmp/t-dcdec5.s:8: Error: file number less than one clang-7.0: error: assembler command failed with exit code 1 (use -v to see invocation) llvm-svn: 328699
* Reapply "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-271-0/+12
| | | | | | | | | | | | | | | | DWARF v5 specifies that the root file (also given in the DW_AT_name attribute of the compilation unit DIE) should be emitted explicitly to the line table's list of files. This makes the line table more independent of the .debug_info section. Fixes the bug found by asan. Also XFAIL the new test for Darwin, which is stuck on DWARF v2, and fix up other tests so they stop failing on Windows. Last but not least, don't break "clang -g" of an assembler file that has .file directives in it. Differential Revision: https://reviews.llvm.org/D44054 llvm-svn: 328676
* Revert "Reapply "[DWARFv5] Emit file 0 to the line table.""Alexander Kornienko2018-03-071-12/+0
| | | | | | | | | | | | | | | | This reverts commit r326839. r326839 breaks assembly file parsing: $ cat q.c void g() {} $ clang -S q.c -g $ clang -g -c q.s q.s:9:2: error: file number already allocated .file 1 "/tmp/test" "q.c" ^ llvm-svn: 326902
* Reapply "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-061-0/+12
| | | | | | | | Fixes the bug found by asan. Also XFAIL the new test for Darwin, which is stuck on DWARF v2, and fix up other tests so they stop failing on Windows. llvm-svn: 326839
* [Asm] Refactor debug printing of AsmTokenOliver Stannard2018-03-061-137/+3
| | | | | | | | | | | | | | * Move printing from llvm-mc to the AsmToken class, so that it can be used elsewhere. * Add 5 cases which were missed: BigNum, Comment, HashDirective, Space and BackSlash, and remove the default case so that -Wswitch will catch this error in future. This is almost NFC, except for the fact that llvm-mc can now print those 5 tokens in -as-lex mode. Differential revision: https://reviews.llvm.org/D43936 llvm-svn: 326794
* Revert "[DWARFv5] Emit file 0 to the line table."Paul Robinson2018-03-061-11/+0
| | | | | | | | | Caused an asan failure. This reverts commit d54883f081186cdcce74e6f98cfc0438579ec019. aka r326758 llvm-svn: 326762
* [DWARFv5] Emit file 0 to the line table.Paul Robinson2018-03-061-0/+11
| | | | | | | | | | | DWARF v5 specifies that the root file (also given in the DW_AT_name attribute of the compilation unit DIE) should be emitted explicitly to the line table's list of files. This makes the line table more independent of the .debug_info section. Differential Revision: https://reviews.llvm.org/D44054 llvm-svn: 326758
* Thread MCSubtargetInfo through Target::createMCAsmBackendAlex Bradbury2018-01-031-3/+2
| | | | | | | | | | | | | | | | | | | | | Currently it's not possible to access MCSubtargetInfo from a TgtMCAsmBackend. D20830 threaded an MCSubtargetInfo reference through MCAsmBackend::relaxInstruction, but this isn't the only function that would benefit from access. This patch removes the Triple and CPUString arguments from createMCAsmBackend and replaces them with MCSubtargetInfo. This patch just changes the interface without making any intentional functional changes. Once in, several cleanups are possible: * Get rid of the awkward MCSubtargetInfo handling in ARMAsmBackend * Support 16-bit instructions when valid in MipsAsmBackend::writeNopData * Get rid of the CPU string parsing in X86AsmBackend and just use a SubtargetFeature for HasNopl * Emit 16-bit nops in RISCVAsmBackend::writeNopData if the compressed instruction set extension is enabled (see D41221) This change initially exposed PR35686, which has since been resolved in r321026. Differential Revision: https://reviews.llvm.org/D41349 llvm-svn: 321692
* Remove redundant includes from tools.Michael Zolotukhin2017-12-131-1/+0
| | | | llvm-svn: 320631
* Rename MCTargetOptionsCommandFlags.h to .def as it is not a normal/modular ↵David Blaikie2017-11-271-1/+1
| | | | | | header as much as it is for stamping out some global/static variables llvm-svn: 319086
* [MC] Have MCObjectStreamer take its MCAsmBackend argument via unique_ptr.Lang Hames2017-10-111-2/+4
| | | | | | | | MCObjectStreamer owns its MCCodeEmitter -- this fixes the types to reflect that, and allows us to remove the last instance of MCObjectStreamer's weird "holding ownership via someone else's reference" trick. llvm-svn: 315531
* [MC] Have MCObjectStreamer take its MCAsmBackend argument via unique_ptr.Lang Hames2017-10-111-2/+2
| | | | | | | | MCObjectStreamer owns its MCAsmBackend -- this fixes the types to reflect that, and allows us to remove another instance of MCObjectStreamer's weird "holding ownership via someone else's reference" trick. llvm-svn: 315410
* [Support] Rename tool_output_file to ToolOutputFile, NFCReid Kleckner2017-09-231-4/+4
| | | | | | | This class isn't similar to anything from the STL, so it shouldn't use the STL naming conventions. llvm-svn: 314050
* Don't pass the code model to MCRafael Espindola2017-08-021-15/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I was surprised to see the code model being passed to MC. After all, it assembles code, it doesn't create it. The one place it is used is in the expansion of .cfi directives to handle .eh_frame being more that 2gb away from the code. As far as I can tell, gnu assembler doesn't even have an option to enable this. Compiling a c file with gcc -mcmodel=large produces a regular looking .eh_frame. This is probably because in practice linker parse and recreate .eh_frames. In llvm this is used because the JIT can place the code and .eh_frame very far apart. Ideally we would fix the jit and delete this option. This is hard. Apart from confusion another problem with the current interface is that most callers pass CodeModel::Default, which is bad since MC has no way to map it to the target default if it actually needed to. This patch then replaces the argument with a boolean with a default value. The vast majority of users don't ever need to look at it. In fact, only CodeGen and llvm-mc use it and llvm-mc just to enable more testing. llvm-svn: 309884
* sink DebugCompressionType into MC for exposing to clangSaleem Abdulrasool2017-06-091-12/+10
| | | | | | | | | | | | | | This is a preparatory change to expose the debug compression style to clang. It requires exposing the enumeration and passing the actual value through to the backend from the frontend in actual value form rather than a boolean that selects the GNU style of debug info compression. Minor tweak to the ELF Object Writer to use a variable for re-used values. Add an assertion that debug information format is one of the two currently known types if debug information is being compressed. llvm-svn: 305038
* [DWARFv5] llvm-mc support for new unit header.Paul Robinson2017-02-281-1/+1
| | | | | | | | | This is for running the assembler with -g (to emit DWARF describing the assembler source). Differential Revision: http://reviews.llvm.org/D30475 llvm-svn: 296541
* [llvm] Fix D26214: Move error handling out of MC and to the callers.Mandeep Singh Grang2016-12-061-2/+15
| | | | | | | | | | | | Summary: Related clang patch; https://reviews.llvm.org/D27360 Reviewers: t.p.northover, grosbach, compnerd, echristo Subscribers: compnerd, mehdi_amini, llvm-commits Differential Revision: https://reviews.llvm.org/D27359 llvm-svn: 288763
* [llvm] Implement support for -defsym assembler optionMandeep Singh Grang2016-12-011-16/+3
| | | | | | | | | | | | | | | Summary: Changes to llvm-mc to move common logic to separate function. Related clang patch: https://reviews.llvm.org/D26213 Reviewers: rafael, t.p.northover, colinl, echristo, rengolin Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D26214 llvm-svn: 288396
* [MC] Make llvm-mc fail cleanly on invalid output asm variant.Nirav Dave2016-10-311-0/+8
| | | | | | | | | | | | Fixes PR28488. Reviewers: rnk, majnemer Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D25834 llvm-svn: 285616
* Turn cl::values() (for enum) from a vararg function to using C++ variadic ↵Mehdi Amini2016-10-081-8/+4
| | | | | | | | | | | | | | | template The core of the change is supposed to be NFC, however it also fixes what I believe was an undefined behavior when calling: va_start(ValueArgs, Desc); with Desc being a StringRef. Differential Revision: https://reviews.llvm.org/D25342 llvm-svn: 283671
* Fix a typo, depricated -> deprecatedMartin Storsjo2016-09-271-1/+1
| | | | | | Differential Revision: https://reviews.llvm.org/D22849 llvm-svn: 282534
* Replace a few more "fall through" comments with LLVM_FALLTHROUGHJustin Bogner2016-08-171-1/+1
| | | | | | Follow up to r278902. I had missed "fall through", with a space. llvm-svn: 278970
* Re-commit r277988: [mips][ias] Fix all the hacks related to MIPS-specific ↵Daniel Sanders2016-08-081-0/+72
| | | | | | | | | unary operators (%hi/%lo/%gp_rel/etc.). Hopefully with the MSVC builds fixed. I've added a missing '#include <tuple>' that gcc and clang don't seem to need. llvm-svn: 277995
* Revert r277988: [mips][ias] Fix all the hacks related to MIPS-specific unary ↵Daniel Sanders2016-08-081-72/+0
| | | | | | | | operators (%hi/%lo/%gp_rel/etc.). It seems that MSVC doesn't like std::tie(). llvm-svn: 277990
* [mips][ias] Fix all the hacks related to MIPS-specific unary operators ↵Daniel Sanders2016-08-081-0/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (%hi/%lo/%gp_rel/etc.). Summary: They are now lexed as a single token on targets where MCAsmInfo::HasMipsExpressions is true and then parsed in a similar way to the '~' operator as part of MCExpr::parseExpression. As a result: * expressions and immediates no longer have different parsing rules. The difference is now solely down to whether evaluateAsAbsolute() succeeds. * %hi(%neg(%gp_rel(x))) are no longer parsed as a single operator and decomposed into the three MipsMCExpr nodes. They are parsed directly as three MipsMCExpr nodes. * parseMemOperand no longer needs to eat all the surrounding parenthesis to get at the outermost operator to make this work * %hi(%neg(%gp_rel(x))) and %lo(%neg(%gp_rel(x))) are no longer the only 3-in-1 relocs that parse for N64. They're still the only combinations that are permitted in relocatable expressions though. Fixing that should be a later patch. * We no longer need to list all the tokens that can occur as the first token of an expression or immediate. test/MC/Mips/expr1.s: This change also prevents the incorrect lowering of %lo(2*4)+foo to %lo(8+foo) which is not an equivalent expression (the difference is whether foo is truncated to 16-bit or not) and the test has been updated to account for the macro expansion the correct expression requires. Reviewers: sdardis Subscribers: dsanders, sdardis, llvm-commits Differential Revision: https://reviews.llvm.org/D23110 llvm-svn: 277988
* MC] Provide an MCTargetOptions to implementors of MCAsmBackendCtorTy, NFCJoel Jones2016-07-251-2/+3
| | | | | | | | | | | | | | | Some targets, notably AArch64 for ILP32, have different relocation encodings based upon the ABI. This is an enabling change, so a future patch can use the ABIName from MCTargetOptions to chose which relocations to use. Tested using check-llvm. The corresponding change to clang is in: http://reviews.llvm.org/D16538 Patch by: Joel Jones Differential Revision: https://reviews.llvm.org/D16213 llvm-svn: 276654
* Provide support for preserving assembly commentsNirav Dave2016-07-111-0/+5
| | | | | | | | | | | | | | | | | Preserve assembly comments from input in output assembly and flags to toggle property. This is on by default for inline assembly and off in llvm-mc. Parsed comments are emitted immediately before an EOL which generally places them on the expected line. Reviewers: rtrieu, dwmw2, rnk, majnemer Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D20020 llvm-svn: 275058
* Change the default of -relax-relocations.Rafael Espindola2016-06-171-3/+3
| | | | | | | | | | llvm-mc is a developer tool, as such it make sense for it to use new features by default. This doesn't change the user facing clang, which still defaults to non relaxable relocations. llvm-svn: 273014
* Run clang-tidy's performance-unnecessary-copy-initialization over LLVM.Benjamin Kramer2016-06-121-1/+1
| | | | | | No functionality change intended. llvm-svn: 272516
* Search for llvm-symbolizer binary in the same directory as argv[0], beforeRichard Smith2016-06-091-1/+1
| | | | | | | looking for it along $PATH. This allows installs of LLVM tools outside of $PATH to find the symbolizer and produce pretty backtraces if they crash. llvm-svn: 272232
* Move RelaxELFRel out to llvm-mc.Rafael Espindola2016-05-291-0/+6
| | | | llvm-svn: 271160
* Recommit 270977 - [llvm-mc] - Teach llvm-mc to generate zlib styled ↵George Rimar2016-05-271-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | compression sections. Fix: updated clang code which was not updated by mistake. Original commit message: [llvm-mc] - Teach llvm-mc to generate zlib styled compression sections. This patch is strongly based on previously reverted D20331. (because of gnuutils < 2.26 does not support compressed debug sections in non zlib-gnu style) Difference that this patch supports both zlib and zlib-gnu styles. -compress-debug-sections option now supports next values: -compress-debug-sections=zlib-gnu -compress-debug-sections=zlib -compress-debug-sections=none Previously specifying -compress-debug-sections enabled zlib-gnu compression, so anyone can put "-compress-debug-sections=zlib-gnu" to restore the behavior that was before this patch for case when compression was enabled. Differential revision: http://reviews.llvm.org/D20676 llvm-svn: 270987
* Revert r270977 ([llvm-mc] - Teach llvm-mc to generate zlib styled ↵George Rimar2016-05-271-14/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | compression sections.) It broke buildbot: http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast/builds/13585/steps/build/logs/stdio Initial commit message: [llvm-mc] - Teach llvm-mc to generate zlib styled compression sections. This patch is strongly based on previously reverted D20331. (because of gnuutils < 2.26 does not support compressed debug sections in non zlib-gnu style) Difference that this patch supports both zlib and zlib-gnu styles. -compress-debug-sections option now supports next values: -compress-debug-sections=zlib-gnu -compress-debug-sections=zlib -compress-debug-sections=none Previously specifying -compress-debug-sections enabled zlib-gnu compression, so anyone can put "-compress-debug-sections=zlib-gnu" to restore the behavior that was before this patch for case when compression was enabled. Differential revision: http://reviews.llvm.org/D20676 llvm-svn: 270978
* [llvm-mc] - Teach llvm-mc to generate zlib styled compression sections.George Rimar2016-05-271-5/+14
| | | | | | | | | | | | | | | | | | | | This patch is strongly based on previously reverted D20331. (because of gnuutils < 2.26 does not support compressed debug sections in non zlib-gnu style) Difference that this patch supports both zlib and zlib-gnu styles. -compress-debug-sections option now supports next values: -compress-debug-sections=zlib-gnu -compress-debug-sections=zlib -compress-debug-sections=none Previously specifying -compress-debug-sections enabled zlib-gnu compression, so anyone can put "-compress-debug-sections=zlib-gnu" to restore the behavior that was before this patch for case when compression was enabled. Differential revision: http://reviews.llvm.org/D20676 llvm-svn: 270977
* Don't pass a Reloc::Model to MC.Rafael Espindola2016-05-181-15/+3
| | | | | | | | | | | | MC only needs to know if the output is PIC or not. It never has to decide about creating GOTs and PLTs for example. The only thing that MC itself uses this information for is expanding "macros" in sparc and mips. The rest I am pretty sure could be moved to CodeGen. This is a cleanup and isolates the code from future changes to Reloc::Model. llvm-svn: 269909
* MC: Don't access the filesystem in MCContext's constructorJustin Bogner2016-03-221-0/+6
| | | | | | | | | | | | | | MCContext shouldn't be accessing the filesystem - that's a gross layering violation and makes it awkward to use as a library or in a daemon where it may not even be allowed filesystem access. The CWD lookup here is normally redundant anyway, since the calling context either also looks up the CWD or sets this to something more specific. Here, we fix up the one caller that doesn't already set up a debug compilation dir and make it clear that the responsibility for such set up is in the users of MCContext. llvm-svn: 264109
* Move MCTargetAsmParser.h to llvm/MC/MCParser where it belongs.Benjamin Kramer2016-01-271-1/+1
| | | | llvm-svn: 258917
* Remove autoconf supportChris Bieneman2016-01-261-17/+0
| | | | | | | | | | | | | | | | Summary: This patch is provided in preparation for removing autoconf on 1/26. The proposal to remove autoconf on 1/26 was discussed on the llvm-dev thread here: http://lists.llvm.org/pipermail/llvm-dev/2016-January/093875.html "I felt a great disturbance in the [build system], as if millions of [makefiles] suddenly cried out in terror and were suddenly silenced. I fear something [amazing] has happened." - Obi Wan Kenobi Reviewers: chandlerc, grosbach, bob.wilson, tstellarAMD, echristo, whitequark Subscribers: chfast, simoncook, emaste, jholewinski, tberghammer, jfb, danalbert, srhines, arsenm, dschuff, jyknight, dsanders, joker.eph, llvm-commits Differential Revision: http://reviews.llvm.org/D16471 llvm-svn: 258861
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