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DebugInfo: Add comment describing the need to disable address pool usage in skeleton units.

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Post commit review from Eric Christopher.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217842 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2014-09-15 22:41:25 +00:00
parent 61c9638f41
commit 1bdc6c4519
1 changed files with 5 additions and 0 deletions
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5
lib/CodeGen/AsmPrinter/DwarfUnit.cpp
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@ -286,6 +286,11 @@ void DwarfUnit::addSectionOffset(DIE &Die, dwarf::Attribute Attribute,
void DwarfCompileUnit::addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
const MCSymbol *Label) {
// Don't use the address pool in non-fission or in the skeleton unit itself.
// FIXME: Once GDB supports this, it's probably worthwhile using the address
// pool from the skeleton - maybe even in non-fission (possibly fewer
// relocations by sharing them in the pool, but we have other ideas about how
// to reduce the number of relocations as well/instead).
if (!DD->useSplitDwarf() || !Skeleton)
return addLocalLabelAddress(Die, Attribute, Label);