From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.smtpout.orange.fr (smtp08.smtpout.orange.fr [80.12.242.130]) by sourceware.org (Postfix) with ESMTPS id 457DB3858C55 for ; Sun, 18 Sep 2022 20:15:56 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 457DB3858C55 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=gcc.gnu.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=gcc.gnu.org Received: from cyrano.home ([86.215.174.255]) by smtp.orange.fr with ESMTPA id a0hgorqvnjJi0a0hmokkEB; Sun, 18 Sep 2022 22:15:55 +0200 X-ME-Helo: cyrano.home X-ME-Auth: bW9yaW4tbWlrYWVsQG9yYW5nZS5mcg== X-ME-Date: Sun, 18 Sep 2022 22:15:55 +0200 X-ME-IP: 86.215.174.255 From: Mikael Morin To: gcc-patches@gcc.gnu.org, fortran@gcc.gnu.org Subject: [PATCH v2 1/9] fortran: Move the clobber generation code Date: Sun, 18 Sep 2022 22:15:37 +0200 Message-Id: <20220918201545.453296-2-mikael@gcc.gnu.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220918201545.453296-1-mikael@gcc.gnu.org> References: <20220918201545.453296-1-mikael@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-11.7 required=5.0 tests=BAYES_00,GIT_PATCH_0,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NEUTRAL,TXREP autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: This change inlines the clobber generation code from gfc_conv_expr_reference to the single caller from where the add_clobber flag can be true, and removes the add_clobber argument. What motivates this is the standard making the procedure call a cause for a variable to become undefined, which translates to a clobber generation, so clobber generation should be closely related to procedure call generation, whereas it is rather orthogonal to variable reference generation. Thus the generation of the clobber feels more appropriate in gfc_conv_procedure_call than in gfc_conv_expr_reference. Behaviour remains unchanged. gcc/fortran/ChangeLog: * trans.h (gfc_conv_expr_reference): Remove add_clobber argument. * trans-expr.cc (gfc_conv_expr_reference): Ditto. Inline code depending on add_clobber and conditions controlling it ... (gfc_conv_procedure_call): ... to here. --- gcc/fortran/trans-expr.cc | 58 +++++++++++++++++++++------------------ gcc/fortran/trans.h | 3 +- 2 files changed, 32 insertions(+), 29 deletions(-) diff --git a/gcc/fortran/trans-expr.cc b/gcc/fortran/trans-expr.cc index 850007fd2e1..7902b941c2d 100644 --- a/gcc/fortran/trans-expr.cc +++ b/gcc/fortran/trans-expr.cc @@ -6395,7 +6395,7 @@ gfc_conv_procedure_call (gfc_se * se, gfc_symbol * sym, && e->symtree->n.sym->attr.pointer)) && fsym && fsym->attr.target) /* Make sure the function only gets called once. */ - gfc_conv_expr_reference (&parmse, e, false); + gfc_conv_expr_reference (&parmse, e); else if (e->expr_type == EXPR_FUNCTION && e->symtree->n.sym->result && e->symtree->n.sym->result != e->symtree->n.sym @@ -6502,22 +6502,36 @@ gfc_conv_procedure_call (gfc_se * se, gfc_symbol * sym, } else { - bool add_clobber; - add_clobber = fsym && fsym->attr.intent == INTENT_OUT - && !fsym->attr.allocatable && !fsym->attr.pointer - && e->symtree && e->symtree->n.sym - && !e->symtree->n.sym->attr.dimension - && !e->symtree->n.sym->attr.pointer - && !e->symtree->n.sym->attr.allocatable - /* See PR 41453. */ - && !e->symtree->n.sym->attr.dummy - /* FIXME - PR 87395 and PR 41453 */ - && e->symtree->n.sym->attr.save == SAVE_NONE - && !e->symtree->n.sym->attr.associate_var - && e->ts.type != BT_CHARACTER && e->ts.type != BT_DERIVED - && e->ts.type != BT_CLASS && !sym->attr.elemental; + gfc_conv_expr_reference (&parmse, e); - gfc_conv_expr_reference (&parmse, e, add_clobber); + if (fsym + && fsym->attr.intent == INTENT_OUT + && !fsym->attr.allocatable + && !fsym->attr.pointer + && e->expr_type == EXPR_VARIABLE + && e->ref == NULL + && e->symtree + && e->symtree->n.sym + && !e->symtree->n.sym->attr.dimension + && !e->symtree->n.sym->attr.pointer + && !e->symtree->n.sym->attr.allocatable + /* See PR 41453. */ + && !e->symtree->n.sym->attr.dummy + /* FIXME - PR 87395 and PR 41453 */ + && e->symtree->n.sym->attr.save == SAVE_NONE + && !e->symtree->n.sym->attr.associate_var + && e->ts.type != BT_CHARACTER + && e->ts.type != BT_DERIVED + && e->ts.type != BT_CLASS + && !sym->attr.elemental) + { + tree var; + /* FIXME: This fails if var is passed by reference, see PR + 41453. */ + var = e->symtree->n.sym->backend_decl; + tree clobber = build_clobber (TREE_TYPE (var)); + gfc_add_modify (&se->pre, var, clobber); + } } /* Catch base objects that are not variables. */ if (e->ts.type == BT_CLASS @@ -9485,7 +9499,7 @@ gfc_conv_expr_type (gfc_se * se, gfc_expr * expr, tree type) values only. */ void -gfc_conv_expr_reference (gfc_se * se, gfc_expr * expr, bool add_clobber) +gfc_conv_expr_reference (gfc_se * se, gfc_expr * expr) { gfc_ss *ss; tree var; @@ -9525,16 +9539,6 @@ gfc_conv_expr_reference (gfc_se * se, gfc_expr * expr, bool add_clobber) gfc_add_block_to_block (&se->pre, &se->post); se->expr = var; } - else if (add_clobber && expr->ref == NULL) - { - tree clobber; - tree var; - /* FIXME: This fails if var is passed by reference, see PR - 41453. */ - var = expr->symtree->n.sym->backend_decl; - clobber = build_clobber (TREE_TYPE (var)); - gfc_add_modify (&se->pre, var, clobber); - } return; } diff --git a/gcc/fortran/trans.h b/gcc/fortran/trans.h index 03d5288aad2..bc9035c1717 100644 --- a/gcc/fortran/trans.h +++ b/gcc/fortran/trans.h @@ -499,8 +499,7 @@ tree gfc_build_compare_string (tree, tree, tree, tree, int, enum tree_code); void gfc_conv_expr (gfc_se * se, gfc_expr * expr); void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr); void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr); -void gfc_conv_expr_reference (gfc_se * se, gfc_expr * expr, - bool add_clobber = false); +void gfc_conv_expr_reference (gfc_se * se, gfc_expr * expr); void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); -- 2.35.1