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073089a7e0
PR optimization/11741 * gcse.c (pre_insert_copy_insn): Tweak the logic for finding the appropriate set to match that in hash_scan_insn. Fall back to the original copy method, if we can't validate changing insn. (pre_delete): Only delete instructions that have a single_set, instead of aborting when we encounter an PARALLEL insn with more then one SET. * gcc.dg/20030926-1.c: New test case. From-SVN: r71827
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