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baf8348499
Record the address of a tail-calling branch instruction within its call site entry using DW_AT_call_pc. This allows a debugger to determine the address to use when creating aritificial frames. This creates an extra attribute + relocation at tail call sites, which constitute 3-5% of all call sites in xnu/clang respectively. rdar://60307600 Differential Revision: https://reviews.llvm.org/D76336