re PR target/69442 (wrong code with -Og and 64bit modulo @ armv7a)
PR target/69442 * combine.c (combine_instructions): For REG_EQUAL note with SET_DEST being ZERO_EXTRACT, also temporarily set SET_DEST to the underlying register. * doc/rtl.texi (REG_EQUAL): Document the behavior of REG_EQUAL/REG_EQUIV notes if SET_DEST is ZERO_EXTRACT. * gcc.dg/pr69442.c: New test. From-SVN: r232819
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gcc/testsuite/gcc.dg/pr69442.c
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