re PR rtl-optimization/83628 (performance regression when accessing arrays on alpha)
PR target/83628 * config/alpha/alpha.md (*sadd<modesuffix>): Use ASHIFT instead of MULT rtx. Update all corresponding splitters. (*saddl_se): Ditto. (*ssub<modesuffix>): Ditto. (*ssubl_se): Ditto. (*cmp_sadd_di): Update split patterns. (*cmp_sadd_si): Ditto. (*cmp_sadd_sidi): Ditto. (*cmp_ssub_di): Ditto. (*cmp_ssub_si): Ditto. (*cmp_ssub_sidi): Ditto. * config/alpha/predicates.md (const23_operand): New predicate. * config/alpha/alpha.c (alpha_rtx_costs) [PLUS, MINUS]: Look for ASHIFT, not MULT inner operand. (alpha_split_conditional_move): Update for *sadd<modesuffix> change. testsuite/ChangeLog: PR target/83628 * gcc.target/alpha/pr83628-1.c: New test. * gcc.target/alpha/pr83628-2.c: Ditto. From-SVN: r256228
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gcc/testsuite/gcc.target/alpha/pr83628-1.c
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gcc/testsuite/gcc.target/alpha/pr83628-2.c
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