From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2140) id EB3F6395181A; Wed, 23 Sep 2020 23:24:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EB3F6395181A Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Alexandre Oliva To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/aoliva/heads/testme)] verbosify unified nonconst merges X-Act-Checkin: gcc X-Git-Author: Alexandre Oliva X-Git-Refname: refs/users/aoliva/heads/testme X-Git-Oldrev: c780b96e6d6bfabb261b81ea8626bdce45ad0e15 X-Git-Newrev: b90d7a7ffa1fc32af74fdf09ba89e16a4def59ee Message-Id: <20200923232410.EB3F6395181A@sourceware.org> Date: Wed, 23 Sep 2020 23:24:10 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Sep 2020 23:24:11 -0000 https://gcc.gnu.org/g:b90d7a7ffa1fc32af74fdf09ba89e16a4def59ee commit b90d7a7ffa1fc32af74fdf09ba89e16a4def59ee Author: Alexandre Oliva Date: Thu Sep 17 09:46:56 2020 -0300 verbosify unified nonconst merges Diff: --- gcc/fold-const.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 52ac05f43a4..961e8954128 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -6701,6 +6701,22 @@ fold_truth_andor_1 (location_t loc, enum tree_code code, tree truth_type, ll_mask = const_binop (BIT_IOR_EXPR, ll_mask, rl_mask); lr_mask = const_binop (BIT_IOR_EXPR, lr_mask, rr_mask); + bool report + = (l_split_load + || (!(lnbitsize == rnbitsize + && xll_bitpos == xlr_bitpos + && lnbitpos >= 0 + && rnbitpos >= 0) + && !(((ll_bitsize + ll_bitpos == rl_bitpos + && lr_bitsize + lr_bitpos == rr_bitpos) + || (ll_bitpos == rl_bitpos + rl_bitsize + && lr_bitpos == rr_bitpos + rr_bitsize)) + && ll_bitpos >= 0 + && rl_bitpos >= 0 + && lr_bitpos >= 0 + && rr_bitpos >= 0))); + + tree orig_lhs = lhs, orig_rhs = rhs; lhs = make_bit_field_ref (loc, ll_inner, ll_arg, lntype, lnbitsize, lnbitpos, ll_unsignedp || rl_unsignedp, ll_reversep); @@ -6750,7 +6766,16 @@ fold_truth_andor_1 (location_t loc, enum tree_code code, tree truth_type, if (! integer_all_onesp (lr_mask)) rhs = build2_loc (loc, BIT_AND_EXPR, type, rhs, lr_mask); - return build2_loc (loc, wanted_code, truth_type, lhs, rhs); + result = build2_loc (loc, wanted_code, truth_type, lhs, rhs); + + if (report) + inform (loc, "merged nc extra %qE and %qE into %qE", + orig_lhs, orig_rhs, result); + else if (l_xor || r_xor) + inform (loc, "merged extra %qE and %qE into %qE", + orig_lhs, orig_rhs, result); + + return result; } /* Handle the case of comparisons with constants. If there is something in