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Make the default dwarf version 3 for darwin when we can't find one

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in the module. Add a FIXME with a comment about darwin's ld.

llvm-svn: 189902
This commit is contained in:
Eric Christopher 2013-09-04 01:38:30 +00:00
parent 5d3f56aa82
commit 9c353ced34
1 changed files with 5 additions and 1 deletions
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6
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -174,8 +174,12 @@ DIType DbgVariable::getType() const {
/// Return Dwarf Version by checking module flags.
static unsigned getDwarfVersionFromModule(const Module *M) {
Value *Val = M->getModuleFlag("Dwarf Version");
// If we don't have a value in the module go ahead and use the default in
// dwarf::DWARF_VERSION.
// FIXME: Apple ld has a problem parsing compilation units that specify a
// dwarf version of greater than 3.
if (!Val)
return dwarf::DWARF_VERSION;
return Triple(M->getTargetTriple()).isOSDarwin() ? 3 : dwarf::DWARF_VERSION;
return cast<ConstantInt>(Val)->getZExtValue();
}