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llvm-symbolizer: Handle function definitions nested within other functions

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LLVM always puts function definition DIEs at the top level, but under
some circumstances GCC does not (at least in this case with member
functions of a function-local type).

To ensure that doesn't appear as though the local type's member function
is unduly inlined within the outer function - ensure the inline
discovery DIE parent walk stops at the first DW_TAG_subprogram.

llvm-svn: 331291
This commit is contained in:
David Blaikie 2018-05-01 18:08:45 +00:00
parent a2ad8c4bc8
commit 58ea9af54e
3 changed files with 11 additions and 2 deletions
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8
lib/DebugInfo/DWARF/DWARFUnit.cpp
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@ -415,11 +415,15 @@ DWARFUnit::getInlinedChainForAddress(uint64_t Address,
DWARFDie SubroutineDIE =
(DWO ? DWO.get() : this)->getSubroutineForAddress(Address);
while (SubroutineDIE) {
if (SubroutineDIE.isSubroutineDIE())
if (!SubroutineDIE)
return;
while (!SubroutineDIE.isSubprogramDIE()) {
if (SubroutineDIE.getTag() == DW_TAG_inlined_subroutine)
InlinedChain.push_back(SubroutineDIE);
SubroutineDIE = SubroutineDIE.getParent();
}
InlinedChain.push_back(SubroutineDIE);
}
const DWARFUnitIndex &llvm::getDWARFUnitIndex(DWARFContext &Context,

BIN
test/DebugInfo/Inputs/llvm-symbolizer-local-mem-func-gcc.elf-x86-64 Executable file
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5
test/DebugInfo/llvm-symbolizer.test
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@ -20,6 +20,7 @@ RUN: echo "%p/Inputs/macho-universal 0x1f84" >> %t.input
RUN: echo "%p/Inputs/macho-universal:i386 0x1f67" >> %t.input
RUN: echo "%p/Inputs/macho-universal:x86_64 0x100000f05" >> %t.input
RUN: echo "%p/Inputs/llvm-symbolizer-dwo-test 0x400514" >> %t.input
RUN: echo "%p/Inputs/llvm-symbolizer-local-mem-func-gcc.elf-x86-64 0x61a" >> %t.input
RUN: echo "%p/Inputs/fission-ranges.elf-x86_64 0x720" >> %t.input
RUN: echo "%p/Inputs/arange-overlap.elf-x86_64 0x714" >> %t.input
RUN: cp %p/Inputs/split-dwarf-test.dwo %t
@ -127,6 +128,10 @@ CHECK: _Z3inci
CHECK: main
CHECK-NEXT: llvm-symbolizer-dwo-test.cc:11
CHECK-NOT: local_mem_func
CHECK: _ZZ2f1vEN3foo14local_mem_funcEv
CHECK-NEXT: {{.*}}local-mem-func.cpp:3:0
CHECK: main
CHECK-NEXT: {{.*}}fission-ranges.cc:6