Manman Ren b3388601fb Debug Info: In DIBuilder, the derived-from field of a DW_TAG_pointer_type ... is updated to use DITypeRef. Move isUnsignedDIType and getOriginalTypeSize from DebugInfo.h to be static helper functions in DwarfCompileUnit. We already have a static helper function "isTypeSigned" in DwarfCompileUnit, and a pointer to DwarfDebug is added to resolve the derived-from field. All three functions need to go across link for derived-from fields, so we need to get hold of a type identifier map. A pointer to DwarfDebug is also added to DbgVariable in order to resolve the derived-from field. Debug info verifier is updated to check a derived-from field is a TypeRef. Verifier will not go across link for derived-from fields, in debug info finder, we go across the link to add derived-from fields to types. Function getDICompositeType is only used by dragonegg and since dragonegg does not generate identifier for types, we use an empty map to resolve the derived-from field. When printing a derived-from field, we use DITypeRef::getName to either return the type identifier or getName of the DIType. A paired commit at clang is required due to changes to DIBuilder. llvm-svn: 192018		2013-10-05 01:43:03 +00:00
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llvm	Debug Info: In DIBuilder, the derived-from field of a DW_TAG_pointer_type	2013-10-05 01:43:03 +00:00
llvm-c	Optimize linkonce_odr unnamed_addr functions during LTO.	2013-10-03 18:29:09 +00:00