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gcc/ * config/h8300/addsub.md (addqi3_clobber_flags): Rename to addqi3_flags and annotate with a <cczn> for define_subst. (addhi3_h8sx_clobber_flags): Likewise. (subqi3_clobber_flags, sub<mode>3_clobber_flags): Likewise. (neg<mode2>_clobber_flags): Similarly. (addsi3_clobber_flags): Similarly. Update last argument to output_plussi to distinguish when we need flags or do not need flags. (addhi3_clobber_flags): Similarly. Twiddle code for cases +-1, +-2 and +-4. * config/h8300/h8300.md: Define iterators, mode attributes and substitutions for use in compare/test elimination. * config/h8300/jumpcall.md (branch, branch_1): Use H8cc mode iterator to cover the different modes for the CC register. (branch_1_false): Likewise. gcc/testsuite * gcc.target/h8300/add.c: New test. * gcc.target/h8300/add-2.c: New test. * gcc.target/h8300/add-3.c: New test. * gcc.target/h8300/sub.c: New test. * gcc.target/h8300/sub-2.c: New test. * gcc.target/h8300/sub-3.c: New test.
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