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* Add 'const' qualifiers to static const char* variables.Craig Topper2013-07-161-1/+1
| | | | llvm-svn: 186371
* Remove address spaces from MC.Rafael Espindola2013-07-021-11/+5
| | | | | | | | This is dead code since PIC16 was removed in 2010. The result was an odd mix, where some parts would carefully pass it along and others would assert it was zero (most of the object streamer for example). llvm-svn: 185436
* Use MCFillFragment for zero-initialized data.Serge Pavlov2013-06-271-0/+7
| | | | | | | | It fixes PR16338 (ICE when compiling very large two-dimensional array). Differential Revision: http://llvm-reviews.chandlerc.com/D1043 llvm-svn: 185080
* [MC/DWARF] Generate multiple .debug_line entries for adjacent .loc directivesUlrich Weigand2013-06-191-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | The compiler occasionally generates multiple .loc directives in a row (at the same instruction address). These need to be transformed into multple actual .debug_line table entries, since they are used to signal certain information to the debugger (e.g. if the opening brace of a function body is on the same line as the declaration). The MCAsmStreamer version of EmitDwarfLocDirective handles this correctly by emitting a .loc directive every time it is called. However, the MCObjectStream version simply defaults to recording the information and emitting only a single table entry later, e.g. when EmitInstruction is called. This patch introduces a MCAsmStreamer::EmitDwarfLocDirective version that emits a line table entry for a .loc directive that may already be pending before recording the new directive. (This is similar to how this is handled in GNU as.) With this patch (and the code alignment factor patch) applied, I'm now getting identical DWARF .debug sections for all test-suite object files on PowerPC for the internal and the external assembler. llvm-svn: 184357
* Add support for DWARF line number table entries for values in the instructionCameron Zwarich2013-05-251-0/+2
| | | | | | stream. llvm-svn: 182712
* Add support for subsections to the ELF assembler. Fixes PR8717.Peter Collingbourne2013-04-171-15/+28
| | | | | | Differential Revision: http://llvm-reviews.chandlerc.com/D598 llvm-svn: 179725
* Suppress a GCC -Wunused-variable warning in -Asserts buildsMatt Beaumont-Gay2013-02-151-0/+2
| | | | llvm-svn: 175319
* If bundle alignment is enabled, do not add data to a fragment with instructionsDerek Schuff2013-02-151-1/+3
| | | | | | | | | | | | With bundle alignment, instructions all get their own MCFragments (unless they are in a bundle-locked group). For instructions with fixups, this is an MCDataFragment. Emitting actual data (e.g. for .long) attempts to re-use MCDataFragments, which we don't want int this case since it leads to fragments which exceed the bundle size. So, don't reuse them in this case. Also adds a test and fixes some formatting. llvm-svn: 175316
* Make helpers static. Add missing include so LLVMInitializeObjCARCOpts gets C ↵Benjamin Kramer2013-02-151-1/+1
| | | | | | linkage. llvm-svn: 175264
* Give the MCStreamer class hierarchy LLVM RTTI facilities for use withChandler Carruth2013-01-311-15/+12
| | | | | | | | | | | | | | | | isa<> and dyn_cast<>. In several places, code is already hacking around the absence of this, and there seem to be several interfaces that might be lifted and/or devirtualized using this. This change was based on a discussion with Jim Grosbach about how best to handle testing for specific MCStreamer subclasses. He said that this was the correct end state, and everything else was too hacky so I decided to just make it so. No functionality should be changed here, this is just threading the kind through all the constructors and setting up the classof overloads. llvm-svn: 174113
* These functions have default arguments of 0 for the last arg. UseEric Christopher2013-01-091-1/+1
| | | | | | them and add one where it seemed obvious that we wanted one. llvm-svn: 171932
* Renamed MCInstFragment to MCRelaxableFragment and added some comments.Eli Bendersky2013-01-081-1/+2
| | | | | | No change in functionality. llvm-svn: 171822
* Add the align_to_end option to .bundle_lock in the MC implementation of alignedEli Bendersky2013-01-071-1/+1
| | | | | | | | | bundling. The document describing this feature and the implementation has also been updated: https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm llvm-svn: 171797
* small fixes to enable the reuse of the pass manager across multiple modulesPedro Artigas2013-01-041-0/+1
| | | | llvm-svn: 171475
* Aligned bundling support. Following the discussion here:Eli Bendersky2012-12-201-5/+28
| | | | | | | | | | | http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-December/056754.html The proposal and implementation are fully documented here: https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm Tests will follow shortly. llvm-svn: 170718
* This patch is needed to make c++ exceptions work for mips16.Reed Kotler2012-12-161-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mips16 is really a processor decoding mode (ala thumb 1) and in the same program, mips16 and mips32 functions can exist and can call each other. If a jal type instruction encounters an address with the lower bit set, then the processor switches to mips16 mode (if it is not already in it). If the lower bit is not set, then it switches to mips32 mode. The linker knows which functions are mips16 and which are mips32. When relocation is performed on code labels, this lower order bit is set if the code label is a mips16 code label. In general this works just fine, however when creating exception handling tables and dwarf, there are cases where you don't want this lower order bit added in. This has been traditionally distinguished in gas assembly source by using a different syntax for the label. lab1: ; this will cause the lower order bit to be added lab2=. ; this will not cause the lower order bit to be added In some cases, it does not matter because in dwarf and debug tables the difference of two labels is used and in that case the lower order bits subtract each other out. To fix this, I have added to mcstreamer the notion of a debuglabel. The default is for label and debug label to be the same. So calling EmitLabel and EmitDebugLabel produce the same result. For various reasons, there is only one set of labels that needs to be modified for the mips exceptions to work. These are the "$eh_func_beginXXX" labels. Mips overrides the debug label suffix from ":" to "=." . This initial patch fixes exceptions. More changes most likely will be needed to DwarfCFException to make all of this work for actual debugging. These changes will be to emit debug labels in some places where a simple label is emitted now. Some historical discussion on this from gcc can be found at: http://gcc.gnu.org/ml/gcc-patches/2008-08/msg00623.html http://gcc.gnu.org/ml/gcc-patches/2008-11/msg01273.html llvm-svn: 170279
* Add more reset methods to make all objects that the backend may use for ↵Pedro Artigas2012-12-141-1/+2
| | | | | | outputting code have a reset, some are not used but were declared for completeness llvm-svn: 170227
* Make the MCStreamer have a reset method and call that after finalization of ↵Pedro Artigas2012-12-121-0/+5
| | | | | | | | the asm printer, also changed MCContext to a single reset only method for simplicity as requested on the list llvm-svn: 170041
* Refactor MCInstFragment and MCDataFragment to adhere to a common interface,Eli Bendersky2012-12-071-6/+8
| | | | | | | | | which removes code duplication and prepares the ground for future additions. Full discussion: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/158233.html llvm-svn: 169626
* Lift EmitAssignment into MCObjectStreamer which gets rid of at least threeEli Bendersky2012-12-071-0/+5
| | | | | | duplicate implementations in format-specific streamers. llvm-svn: 169613
* Hoist some grossly duplicated code from the COFF/ELF/MachO streamers into ↵Benjamin Kramer2012-10-041-0/+25
| | | | | | MCObjectStreamer. llvm-svn: 165225
* Provide a shortcut for MCObjectStreamer when emitting fills.Benjamin Kramer2012-10-011-0/+8
| | | | | | | Reduces runtime of i386-large-relocations.s by 10x in Release builds, even more in Debug+Asserts builds. llvm-svn: 164945
* For mips64 switch statements in subroutines could generate Jack Carter2012-08-221-3/+9
| | | | | | | | | | | | | within the codegen EK_GPRel64BlockAddress. This was not supported for direct object output and resulted in an assertion. This change adds support for EK_GPRel64BlockAddress for direct object. One fallout from this is to turn on rela relocations for mips64 to match gas. llvm-svn: 162334
* Prune some includes and forward declarations.Craig Topper2012-03-261-4/+4
| | | | llvm-svn: 153429
* Correctly initialize LineSectionSymbol. Thanks to Duncan Sands for noticing it.Rafael Espindola2012-03-031-1/+1
| | | | llvm-svn: 151979
* On ELF, create relocations to the abbreviation and line sections when producingRafael Espindola2012-02-281-2/+3
| | | | | | | | | | debug info for assembly files. We were already doing the right thing when producing debug info for C/C++. ELF linkers don't know dwarf, so they depend on these relocations to produce valid dwarf output. llvm-svn: 151655
* Better diagnostic for malformed .org assembly directive.Jim Grosbach2012-01-271-3/+4
| | | | | | Provide source line number information. llvm-svn: 149101
* Tidy up.Jim Grosbach2012-01-261-1/+1
| | | | llvm-svn: 149096
* Tidy up. MCAsmBackend naming conventions.Jim Grosbach2012-01-181-4/+4
| | | | llvm-svn: 148400
* Don't print an unused label before .cfi_endproc.Rafael Espindola2012-01-091-0/+4
| | | | llvm-svn: 147763
* Don't print a label before .cfi_startproc when we don't need to. This makesRafael Espindola2012-01-071-0/+4
| | | | | | the produce assembly when using CFI just a bit more readable. llvm-svn: 147743
* Split Finish into Finish and FinishImpl to have a common place to do end ofRafael Espindola2012-01-071-1/+1
| | | | | | | | file error checking. Use that to error on an unfinished cfi_startproc. The error is not nice, but is already better than a segmentation fault. llvm-svn: 147717
* The second part of support for generating dwarf for assembly source files. ThisKevin Enderby2011-12-091-0/+4
| | | | | | | | | | generates the dwarf Compile Unit DIE and a dwarf subprogram DIE for each non-temporary label. The next part will be to get the clang driver to enable this when assembling a .s file. rdar://9275556 llvm-svn: 146262
* This patch addresses gp relative fixups/relocations for jump tables.Akira Hatanaka2011-11-231-0/+10
| | | | llvm-svn: 145112
* Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to ↵Evan Cheng2011-07-251-3/+3
| | | | | | createMCAsmBackend. llvm-svn: 136010
* Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where ↵Evan Cheng2011-07-231-1/+1
| | | | | | they belong. llvm-svn: 135833
* Unfortunately several files in MC are badly violating layering rule by usingEvan Cheng2011-07-141-3/+2
| | | | | | | | | TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are other cases of violations, but this is probably the worst. This patch is but one small step towards fixing this. 500 more steps to go. :-( llvm-svn: 135131
* Misc code refactorings:Rafael Espindola2011-05-191-4/+4
| | | | | | | * Remove unnecessary arguments now that ForceExpAbs is a method. * Use ForceExpAbs in EmitAbsValue. llvm-svn: 131683
* Simplify the handling of pcrel relocations on ELF. Now we do the right thingRafael Espindola2011-05-011-2/+2
| | | | | | | | | | for all symbol differences and can drop the old EmitPCRelSymbolValue method. This also make getExprForFDESymbol on ELF equal to the one on MachO, and it can be made non-virtual. llvm-svn: 130634
* Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.Rafael Espindola2011-04-301-22/+0
| | | | llvm-svn: 130585
* Factor a bit of code to MCStreamer::EmitLabel. Keep track of the lastRafael Espindola2011-04-271-4/+1
| | | | | | | | | | | | non private symbol. This will be use for handling foo: .cfi_startproc ... On OS X where we have to create a foo.eh symbol. llvm-svn: 130305
* No relocation produces a SLEB or ULEB, make sure they are handled in MC.Rafael Espindola2011-04-261-10/+12
| | | | llvm-svn: 130181
* Remove unused argument.Rafael Espindola2011-04-211-6/+4
| | | | llvm-svn: 129955
* malloc elimination: it's a bad idea to use raw_svector_ostream on aEli Friedman2011-04-181-1/+4
| | | | | | | | small heap-allocated SmallString because it unconditionally forces a malloc. (Revised version of r129688, with the necessary flush() call.) llvm-svn: 129716
* Revert r129688; it's breaking buildbots.Eli Friedman2011-04-181-3/+1
| | | | llvm-svn: 129689
* More malloc elimination: it's a bad idea to use raw_svector_ostream on aEli Friedman2011-04-181-1/+3
| | | | | | small heap-allocated SmallString because it unconditionally forces a malloc. llvm-svn: 129688
* Add constructors to MCElfStreamer and MCObjectStreamer to take an extra ↵Jan Sjödin2011-03-091-0/+7
| | | | | | MCAssembler * argument. llvm-svn: 127343
* Add some limited support for labels in org directives. Hopefully enough to fixRafael Espindola2011-02-201-1/+17
| | | | | | PR9245. llvm-svn: 126091
* Add support for pushsection and popsection. Patch by Joerg Sonnenberger.Rafael Espindola2011-02-161-8/+3
| | | | llvm-svn: 125629
* Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a stepEvan Cheng2011-01-131-1/+4
| | | | | | | | in the right direction. It eliminated some hacks and will unblock codegen work. But it's far from being done. It doesn't reject illegal expressions, e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all. llvm-svn: 123369
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