Fix assert in MemAccessUtils isLetAccess #30913
Merged
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Assertion failed:
(accessedAddress == getAccessedAddress(accessedAddress) &&
"caller must find the address root"), function isLetAddress,
file /swift/lib/SIL/Utils/MemAccessUtils.cpp, line 63.
Teach the getAccessedAddress utility to iterate through nested access
markers with projections interposed.
Fixes rdar://problem/61464370
Crash in SILOptimizer/access_marker_verify.swift