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path: root/llvm/lib/MC/MCSymbolELF.cpp
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* Change how we handle section symbols on ELF.Rafael Espindola2017-02-021-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | On ELF every section can have a corresponding section symbol. When in an assembly file we have .quad .text the '.text' refers to that symbol. The way we used to handle them is to leave .text an undefined symbol until the very end when the object writer would map them to the actual section symbol. The problem with that is that anything before the end would see an undefined symbol. This could result in bad diagnostics (test/MC/AArch64/label-arithmetic-diags-elf.s), or incorrect results when using the asm streamer (est/MC/Mips/expansion-jal-sym-pic.s). Fixing this will also allow using the section symbol earlier for setting sh_link of SHF_METADATA sections. This patch includes a few hacks to avoid changing our behaviour when handling conflicts between section symbols and other symbols. I reported pr31850 to track that. llvm-svn: 293936
* Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)Alexander Kornienko2015-06-231-2/+2
| | | | | | Apparently, the style needs to be agreed upon first. llvm-svn: 240390
* Fixed/added namespace ending comments using clang-tidy. NFCAlexander Kornienko2015-06-191-2/+2
| | | | | | | | | | | | | The patch is generated using this command: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \ -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \ llvm/lib/ Thanks to Eugene Kosov for the original patch! llvm-svn: 240137
* Move IsUsedInReloc from MCSymbolELF to MCSymbol.Rafael Espindola2015-06-171-13/+1
| | | | | | There is a free bit is MCSymbol and MachO needs the same information. llvm-svn: 239933
* Bring back r239006 with a fix.Rafael Espindola2015-06-041-39/+136
| | | | | | | | | | | | | | | | | | | The fix is just that getOther had not been updated for packing the st_other values in fewer bits and could return spurious values: - unsigned Other = (getFlags() & (0x3f << ELF_STO_Shift)) >> ELF_STO_Shift; + unsigned Other = (getFlags() & (0x7 << ELF_STO_Shift)) >> ELF_STO_Shift; Original message: Pack the MCSymbolELF bit fields into MCSymbol's Flags. This reduces MCSymolfELF from 64 bytes to 56 bytes on x86_64. While at it, also make getOther/setOther easier to use by accepting unshifted STO_* values. llvm-svn: 239012
* Revert "Pack the MCSymbolELF bit fields into MCSymbol's Flags."Rafael Espindola2015-06-041-135/+38
| | | | | | | | This reverts commit r239006. I am debugging the powerpc failures. llvm-svn: 239010
* Pack the MCSymbolELF bit fields into MCSymbol's Flags.Rafael Espindola2015-06-041-38/+135
| | | | | | | | | This reduces MCSymolfELF from 64 bytes to 56 bytes on x86_64. While at it, also make getOther/setOther easier to use by accepting unshifted STO_* values. llvm-svn: 239006
* Remove MCELFSymbolFlags.h. It is now internal to MCSymbolELF.Rafael Espindola2015-06-041-1/+9
| | | | llvm-svn: 238996
* Remember if a weakref of a symbol has been used.Rafael Espindola2015-06-031-0/+6
| | | | | | | | | This avoids yet another last minute patching of the binding. While at it, also simplify the weakref implementation a bit by not walking past it in the expression evaluation. llvm-svn: 238982
* Store whether a symbol is a comdat signature in MCSymbolELF.Rafael Espindola2015-06-031-4/+17
| | | | | | | With this getBinging can now return the correct answer for all cases not involving a .symver and the elf writer doesn't need to patch it last minute. llvm-svn: 238980
* Record in a MCSymbolELF if it has been used in a relocation.Rafael Espindola2015-06-031-0/+9
| | | | | | No functionality change, just saves an on the side map. llvm-svn: 238979
* Convert BindingExplicitlySet into a MCSymbolELF field.Rafael Espindola2015-06-031-0/+1
| | | | | | I will pack it better in a followup patch. llvm-svn: 238975
* Merge MCELF.h into MCSymbolELF.h.Rafael Espindola2015-06-021-0/+79
Now that we have a dedicated type for ELF symbol, these helper functions can become member function of MCSymbolELF. llvm-svn: 238864
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