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DebugInfo: Don't include the name of the CU file in the line table file list when it's unneeded

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Recommitting r201351 and r201355 (reverted in r201351 and r201355)

We weren't emitting the an empty (header only) line table when the line
table was empty - this made the DWARF invalid (the compile unit would
point to the zero-size debug_lines section where there should've been an
empty line table but there was nothing at all). Fix that, and as a
consequence this works around/addresses PR18809.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201380 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2014-02-14 01:57:59 +00:00
parent 5483012b4d
commit 35d2f61510
4 changed files with 30 additions and 4 deletions
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3
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -756,9 +756,6 @@ DwarfCompileUnit *DwarfDebug::constructDwarfCompileUnit(DICompileUnit DIUnit) {
InfoHolder.addUnit(NewCU);
FileIDCUMap[NewCU->getUniqueID()] = 0;
// Call this to emit a .file directive if it wasn't emitted for the source
// file this CU comes from yet.
getOrCreateSourceID(FN, CompilationDir, NewCU->getUniqueID());
NewCU->addString(Die, dwarf::DW_AT_producer, DIUnit.getProducer());
NewCU->addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data2,