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From: Richard Biener <rguenth@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-72] Assume a call is expensive when it mismatches Date: Mon, 2 May 2022 12:59:03 +0000 (GMT) [thread overview] Message-ID: <20220502125903.CECC03857815@sourceware.org> (raw) https://gcc.gnu.org/g:1cb220498e1f59021dab36c39c5d726e9f070c6a commit r13-72-g1cb220498e1f59021dab36c39c5d726e9f070c6a Author: Richard Biener <rguenther@suse.de> Date: Wed Apr 13 15:43:01 2022 +0200 Assume a call is expensive when it mismatches This makes sure to not consider calls to builtin decls with mismatching arguments as inexpensive. 2022-04-13 Richard Biener <rguenther@suse.de> * tree-scalar-evolution.cc (expression_expensive_p): Never consider mismatched calls as cheap. Diff: --- gcc/tree-scalar-evolution.cc | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/gcc/tree-scalar-evolution.cc b/gcc/tree-scalar-evolution.cc index 44157265ce8..b53d7aaa71d 100644 --- a/gcc/tree-scalar-evolution.cc +++ b/gcc/tree-scalar-evolution.cc @@ -3420,12 +3420,15 @@ expression_expensive_p (tree expr, hash_map<tree, uint64_t> &cache, break; return true; } + break; + default: + if (cfn == CFN_LAST + || !is_inexpensive_builtin (get_callee_fndecl (expr))) + return true; break; } - if (!is_inexpensive_builtin (get_callee_fndecl (expr))) - return true; FOR_EACH_CALL_EXPR_ARG (arg, iter, expr) if (expression_expensive_p (arg, cache, op_cost)) return true;
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