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Set global epilogue_completed when skipping pro_and_epilogue pass When compiling RTL functions marked to start at a pass after the reload pass, `skip_pass` is used to mark the reload pass as having completed since many patterns use the `reload_completed` variable to determine whether to run or not. Here we do the same for the `epilogue_completed` variable and the pro_and_epilogue pass. Also include a testcase that relies on the availability of a define_split in the aarch64 backend that is conditioned on this `epilogue_completed` variable. regtest done on native aarch64 regtest done on native x64_86 gcc/ChangeLog: 2019-11-15 Matthew Malcomson <matthew.malcomson@arm.com> * passes.c (skip_pass): Set epilogue_completed if skipping the pro_and_epilogue pass. gcc/testsuite/ChangeLog: 2019-11-15 Matthew Malcomson <matthew.malcomson@arm.com> * gcc.dg/rtl/aarch64/test-epilogue-set.c: New test. From-SVN: r278285
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