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3e16bd3aaf
This intrinsic is like framerecover plus a load. It recovers the EH registration stack allocation from the parent frame and loads the exception information field out of it, giving back a pointer to an EXCEPTION_POINTERS struct. It's designed for clang to use in SEH filter expressions instead of accessing the EXCEPTION_POINTERS parameter that is available on x64. This required a minor change to MC to allow defining a label variable to another absolute framerecover label variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239567 91177308-0d34-0410-b5e6-96231b3b80d8