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PR tree-optimization/81741 PR tree-optimization/71947 * tree-ssa-dom.c: Include tree-inline.h. (record_temporary_equivalences): Only record SSA_NAME = SSA_NAME equivalences if one is more expensive to compute than the other. * tree-ssa-scopedtables.h (class const_or_copies): Make record_const_or_copy_raw method private. (class avail_exprs_stack): New method simplify_binary_operation. * tree-ssa-scopedtables.c (avail_exprs_stack::lookup_avail_expr): Call avail_exprs_stack::simplify_binary_operation as needed. (avail_exprs_stack::simplify_binary_operation): New function. PR tree-optimization/81741 PR tree-optimization/71947 * gcc.dg/tree-ssa/pr81741.c: New test. * gcc.dg/tree-ssa/pr71947-7.c: New test. * gcc.dg/tree-ssa/pr71947-8.c: New test. * gcc.dg/tree-ssa/pr71947-9.c: New test. * gcc.dg/tree-ssa/pr71941-1.c: Tweak expected output. * gcc.dg/tree-ssa/pr71941-2.c: Tweak expected output. * gcc.dg/tree-ssa/pr71941-3.c: Tweak expected output. * gcc.dg/tree-ssa/20030922-2.c: xfail. From-SVN: r251279
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