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While calculating original type size for a derived type, handle type variants encoded as DIDerivedType appropriately.

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This improves bitfield support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-11-04 23:48:00 +00:00
parent 4371cda7f8
commit 61ecbd196c
2 changed files with 13 additions and 9 deletions
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18
lib/Analysis/DebugInfo.cpp
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@ -401,12 +401,18 @@ bool DIVariable::Verify() const {
/// getOriginalTypeSize - If this type is derived from a base type then
/// return base type size.
uint64_t DIDerivedType::getOriginalTypeSize() const {
DIType BT = getTypeDerivedFrom();
if (!BT.isNull() && BT.isDerivedType())
return DIDerivedType(BT.getNode()).getOriginalTypeSize();
if (BT.isNull())
return getSizeInBits();
return BT.getSizeInBits();
unsigned Tag = getTag();
if (Tag == dwarf::DW_TAG_member || Tag == dwarf::DW_TAG_typedef ||
Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
Tag == dwarf::DW_TAG_restrict_type) {
DIType BaseType = getTypeDerivedFrom();
if (BaseType.isDerivedType())
return DIDerivedType(BaseType.getNode()).getOriginalTypeSize();
else
return BaseType.getSizeInBits();
}
return getSizeInBits();
}
/// describes - Return true if this subprogram provides debugging