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Currently, we have a type parameter mechanism for intrinsics. Rather than having to specify a separate intrinsic for each combination of argument and return types, we can specify a single intrinsic with one or more type parameters. These type parameters are passed explicitly to Intrinsic::getDeclaration or can be specified implicitly in the naming of the intrinsic function in an LL file. Today, the types are limited to integer, floating point, and pointer types. With a goal of supporting symbolic targets for patchpoints and statepoints, this change adds support for function types. The change also includes support for first class aggregate types (named structures and arrays) since these appear in function types we've encountered. Reviewed by: atrick, ributzka Differential Revision: http://reviews.llvm.org/D4608 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221742 91177308-0d34-0410-b5e6-96231b3b80d8
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