forked from OSchip/llvm-project
41789de165
When targeting the Darwin assembler, we need to generate markers ha16() and lo16() to designate the high and low parts of a (symbolic) immediate. This is necessary not just for plain symbols, but also for certain symbolic expression, typically along the lines of ha16(A - B). The latter doesn't work when simply using VariantKind flags on the symbol reference. This is why the current back-end uses hacks (explicitly called out as such via multiple FIXMEs) in the symbolLo/symbolHi print methods. This patch uses target-defined MCExpr codes to represent the Darwin ha16/lo16 constructs, following along the lines of the equivalent solution used by the ARM back end to handle their :upper16: / :lower16: markers. This allows us to get rid of special handling both in the symbolLo/symbolHi print method and in the common code MCExpr::print routine. Instead, the ha16 / lo16 markers are printed simply in a custom print routine for the target MCExpr types. (As a result, the symbolLo/symbolHi print methods can now replaced by a single printS16ImmOperand routine that also handles symbolic operands.) The patch also provides a EvaluateAsRelocatableImpl routine to handle ha16/lo16 constructs. This is not actually used at the moment by any in-tree code, but is provided as it makes merging into David Fang's out-of-tree Mach-O object writer simpler. Since there is no longer any need to treat VK_PPC_GAS_HA16 and VK_PPC_DARWIN_HA16 differently, they are merged into a single VK_PPC_ADDR16_HA (and likewise for the _LO16 types). llvm-svn: 182616 |
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| .. | ||
| MCDisassembler | ||
| MCParser | ||
| CMakeLists.txt | ||
| ELFObjectWriter.cpp | ||
| LLVMBuild.txt | ||
| MCAsmBackend.cpp | ||
| MCAsmInfo.cpp | ||
| MCAsmInfoCOFF.cpp | ||
| MCAsmInfoDarwin.cpp | ||
| MCAsmStreamer.cpp | ||
| MCAssembler.cpp | ||
| MCAtom.cpp | ||
| MCCodeEmitter.cpp | ||
| MCCodeGenInfo.cpp | ||
| MCContext.cpp | ||
| MCDisassembler.cpp | ||
| MCDwarf.cpp | ||
| MCELF.cpp | ||
| MCELFObjectTargetWriter.cpp | ||
| MCELFStreamer.cpp | ||
| MCExpr.cpp | ||
| MCInst.cpp | ||
| MCInstPrinter.cpp | ||
| MCInstrAnalysis.cpp | ||
| MCLabel.cpp | ||
| MCMachOStreamer.cpp | ||
| MCMachObjectTargetWriter.cpp | ||
| MCModule.cpp | ||
| MCNullStreamer.cpp | ||
| MCObjectFileInfo.cpp | ||
| MCObjectStreamer.cpp | ||
| MCObjectWriter.cpp | ||
| MCPureStreamer.cpp | ||
| MCRegisterInfo.cpp | ||
| MCSection.cpp | ||
| MCSectionCOFF.cpp | ||
| MCSectionELF.cpp | ||
| MCSectionMachO.cpp | ||
| MCStreamer.cpp | ||
| MCSubtargetInfo.cpp | ||
| MCSymbol.cpp | ||
| MCValue.cpp | ||
| MCWin64EH.cpp | ||
| MachObjectWriter.cpp | ||
| Makefile | ||
| SubtargetFeature.cpp | ||
| WinCOFFObjectWriter.cpp | ||
| WinCOFFStreamer.cpp | ||