[PATCH] D146071: [AIX] unset bit "IsBackChainStored" of traceback table for leaf functions with no stack frame

[Digger Lin via Phabricator via llvm-commits]

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in function PPCAIXAsmPrinter::emitTracebackTable() ,the bit "IsBackChainStored" of traceback table always set true, it will cause aix debug tools "dbx" emit an error info "libdebug assertion "(framep->getGpr(STKP, &addr) == DB_SUCCESS && *nextStkpp == addr)"  when debug a leaf functions with no stack frame.

If a a leaf functions with no stack frame , the bit IsBackChainStored should be unset.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146071

Files:
  llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
  llvm/test/CodeGen/PowerPC/aix-emit-tracebacktable-clobber-register.ll
  llvm/test/CodeGen/PowerPC/aix-emit-tracebacktable-vectorinfo.ll
  llvm/test/CodeGen/PowerPC/aix-emit-tracebacktable-vectorinfo_hasvarg.ll
  llvm/test/CodeGen/PowerPC/aix-emit-tracebacktable.ll
  llvm/test/DebugInfo/XCOFF/empty.ll
  llvm/test/DebugInfo/XCOFF/explicit-section.ll
  llvm/test/DebugInfo/XCOFF/function-sections.ll

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