forked from OSchip/llvm-project
f76884b0d3
The `DIEExpr` is used in debug information entries for either TLS variables or call sites. For now the last case is unsupported for targets with delay slots, for MIPS in particular. The `DIEExpr::EmitValue` method calls a virtual `EmitDebugThreadLocal` routine which, in case of MIPS, always emits either `.dtprelword` or `.dtpreldword` directives. That is okay for "main" code, but in unit tests `DIEExpr` instances can be created not for TLS variables only even on MIPS hosts. That is a reason of the `TestDWARF32Version5Addr8AllForms` failure because handling of the `R_MIPS_TLS_DTPREL` relocation writes incorrect value into dwarf structures. And anyway unconditional emitting of `.dtprelword` directives will be incorrect when/if debug information entries for call sites become supported on MIPS. The patch solves the problem by wrapping expression created in the `MipsTargetObjectFile::getDebugThreadLocalSymbol` method in to the `MipsMCExpr` expression with a new `MEK_DTPREL` tag. This tag is recognized in the `MipsAsmPrinter::EmitDebugThreadLocal` method and `.dtprelword` directives created in this case only. In other cases the expression saved as a regular data. Differential Revision: http://reviews.llvm.org/D54937 llvm-svn: 348194 |
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| .. | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||
| MipsABIFlagsSection.cpp | ||
| MipsABIFlagsSection.h | ||
| MipsABIInfo.cpp | ||
| MipsABIInfo.h | ||
| MipsAsmBackend.cpp | ||
| MipsAsmBackend.h | ||
| MipsBaseInfo.h | ||
| MipsELFObjectWriter.cpp | ||
| MipsELFStreamer.cpp | ||
| MipsELFStreamer.h | ||
| MipsFixupKinds.h | ||
| MipsMCAsmInfo.cpp | ||
| MipsMCAsmInfo.h | ||
| MipsMCCodeEmitter.cpp | ||
| MipsMCCodeEmitter.h | ||
| MipsMCExpr.cpp | ||
| MipsMCExpr.h | ||
| MipsMCNaCl.h | ||
| MipsMCTargetDesc.cpp | ||
| MipsMCTargetDesc.h | ||
| MipsNaClELFStreamer.cpp | ||
| MipsOptionRecord.cpp | ||
| MipsTargetStreamer.cpp | ||