From 79bed25b2337df900dfa4d145883777112a0ee58 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Fri, 5 May 2017 12:51:36 +0000 Subject: [PATCH] tree-ssa-pre.c (get_or_alloc_expr_for): Simplify. 2017-05-05 Richard Biener * tree-ssa-pre.c (get_or_alloc_expr_for): Simplify. From-SVN: r247634 --- gcc/ChangeLog | 4 ++++ gcc/tree-ssa-pre.c | 26 +------------------------- 2 files changed, 5 insertions(+), 25 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0fd02ff..7bc32a9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2017-05-05 Richard Biener + + * tree-ssa-pre.c (get_or_alloc_expr_for): Simplify. + 2017-05-05 Georg-Johann Lay * config/avr/avr.md [flag_strict_overflow]: Remove any occurence diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index b4095bf..b01fa8a 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -1173,31 +1173,7 @@ get_or_alloc_expr_for (tree t) return get_or_alloc_expr_for_name (t); else if (is_gimple_min_invariant (t)) return get_or_alloc_expr_for_constant (t); - else - { - /* More complex expressions can result from SCCVN expression - simplification that inserts values for them. As they all - do not have VOPs the get handled by the nary ops struct. */ - vn_nary_op_t result; - unsigned int result_id; - vn_nary_op_lookup (t, &result); - if (result != NULL) - { - pre_expr e = pre_expr_pool.allocate (); - e->kind = NARY; - PRE_EXPR_NARY (e) = result; - result_id = lookup_expression_id (e); - if (result_id != 0) - { - pre_expr_pool.remove (e); - e = expression_for_id (result_id); - return e; - } - alloc_expression_id (e); - return e; - } - } - return NULL; + gcc_unreachable (); } /* Return the folded version of T if T, when folded, is a gimple -- 2.7.4