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Splitting hard register live range can create (artificial) conflict of the hard register with another pseudo because of simplified conflict calculation in LRA. We should check such conflict on the next assignment sub-pass and spill and reassign the pseudo if necessary. The patch implements this. gcc/ChangeLog: PR target/103074 * lra-constraints.cc (split_reg): Set up check_and_force_assignment_correctness_p when splitting hard register live range. gcc/testsuite/ChangeLog: PR target/103074 * gcc.target/i386/pr103074.c: New. |
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