tree fd1ca5ec7a9057731ac98b8f1d17729c595d8378
parent f29a08f9176c1a443942c08a999763e79b911f62
author Greg Clayton <gclayton@apple.com> 1297278377 +0000
committer Greg Clayton <gclayton@apple.com> 1297278377 +0000

Added the DWARF unique type map such that we only create a type once in the
module's AST context. Prior to this fix, with gcc binaries, we end up with
a full class definition for any used classes in each compile unit due to the
one definition rule. This would result in us making N copies of class T, where
N is the number of compile units that use class T, in the module AST. When
an expression would then try and use any types that were duplicated, it would
quickly confuse clang and make expression evaluation fail due to all of the
duplicate types that got copied over. This is now fixed by making a map of
types in the DWARF that maps type names to a collection of types + declaration
(file + line number) + DIE. Then later when we find a type we look in this
module map and find any already cached types that we can just use.

8935777


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@125207 91177308-0d34-0410-b5e6-96231b3b80d8