Fix uninitialized IRGenOptions field #42123
Merged
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#42094 added a new
IRGenOptions::CompactAbsoluteFunctionPointer
field, but did not initialize it. We subsequently started seeing flaky test failures in LLDB tests that tried to resolve relocations in metadata, so we think this may have resulted in the option sometimes being set totrue
in the REPL.Hopefully fixes rdar://91127507.