From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2071) id 6C83D3858CD1; Fri, 26 Apr 2024 16:51:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6C83D3858CD1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1714150282; bh=o3GNqLbdFADsjG1DRZOE4T5lu/2IfJfEpft56s/x92Y=; h=From:To:Subject:Date:From; b=NyWYu4w844j9+BdMQeHp+Obv9JCSR8AAb5Vm+i4CbwK8KwHikz/lH090C9zq4SaiO ur2dXvAZig5TDOP3zLVfPlNKUywCdrH8I45Acj6MIyxu/WEH8XPgVywEKvgoz7fqT7 Gfgz9dmMhGnXyWwuvwp3HFr8WhQyieYidyXzjmpg= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Harald Anlauf To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-10396] gfortran: Allow ref'ing PDT's len() in parameter-initializer. X-Act-Checkin: gcc X-Git-Author: Andre Vehreschild X-Git-Refname: refs/heads/releases/gcc-12 X-Git-Oldrev: 159671da6d9f4228e5ff46668693cfbdd66b1e1d X-Git-Newrev: 8ad460ca8824f7e29e38a63f9cb4a9a3b96d506f Message-Id: <20240426165122.6C83D3858CD1@sourceware.org> Date: Fri, 26 Apr 2024 16:51:22 +0000 (GMT) List-Id: https://gcc.gnu.org/g:8ad460ca8824f7e29e38a63f9cb4a9a3b96d506f commit r12-10396-g8ad460ca8824f7e29e38a63f9cb4a9a3b96d506f Author: Andre Vehreschild Date: Wed Jul 12 12:51:30 2023 +0200 gfortran: Allow ref'ing PDT's len() in parameter-initializer. Fix declaring a parameter initialized using a pdt_len reference not simplifying the reference to a constant. 2023-07-12 Andre Vehreschild gcc/fortran/ChangeLog: PR fortran/102003 * expr.cc (find_inquiry_ref): Replace len of pdt_string by constant. (simplify_ref_chain): Ensure input to find_inquiry_ref is NULL. (gfc_match_init_expr): Prevent PDT analysis for function calls. (gfc_pdt_find_component_copy_initializer): Get the initializer value for given component. * gfortran.h (gfc_pdt_find_component_copy_initializer): New function. * simplify.cc (gfc_simplify_len): Replace len() of PDT with pdt component ref or constant. gcc/testsuite/ChangeLog: * gfortran.dg/pdt_33.f03: New test. (cherry picked from commit f9182da3213aa57c16dd0b52862126de4a259f6a) Diff: --- gcc/fortran/expr.cc | 31 ++++++++++++++++++-- gcc/fortran/gfortran.h | 1 + gcc/fortran/simplify.cc | 57 ++++++++++++++++++++++++++++-------- gcc/testsuite/gfortran.dg/pdt_33.f03 | 21 +++++++++++++ 4 files changed, 94 insertions(+), 16 deletions(-) diff --git a/gcc/fortran/expr.cc b/gcc/fortran/expr.cc index c04403a2b89..5640d215925 100644 --- a/gcc/fortran/expr.cc +++ b/gcc/fortran/expr.cc @@ -1850,6 +1850,13 @@ find_inquiry_ref (gfc_expr *p, gfc_expr **newp) else if (tmp->expr_type == EXPR_CONSTANT) *newp = gfc_get_int_expr (gfc_default_integer_kind, NULL, tmp->value.character.length); + else if (gfc_init_expr_flag + && tmp->ts.u.cl->length->symtree->n.sym->attr.pdt_len) + *newp = gfc_pdt_find_component_copy_initializer (tmp->symtree->n + .sym, + tmp->ts.u.cl + ->length->symtree + ->n.sym->name); else goto cleanup; @@ -1890,7 +1897,9 @@ find_inquiry_ref (gfc_expr *p, gfc_expr **newp) mpc_imagref (tmp->value.complex), GFC_RND_MODE); break; } - tmp = gfc_copy_expr (*newp); + // TODO: Fix leaking expr tmp, when simplify is done twice. + if (inquiry->next) + gfc_replace_expr (tmp, *newp); } if (!(*newp)) @@ -2055,7 +2064,7 @@ static bool simplify_ref_chain (gfc_ref *ref, int type, gfc_expr **p) { int n; - gfc_expr *newp; + gfc_expr *newp = NULL; for (; ref; ref = ref->next) { @@ -3217,7 +3226,7 @@ gfc_match_init_expr (gfc_expr **result) return m; } - if (gfc_derived_parameter_expr (expr)) + if (expr->expr_type != EXPR_FUNCTION && gfc_derived_parameter_expr (expr)) { *result = expr; gfc_init_expr_flag = false; @@ -6530,3 +6539,19 @@ gfc_check_vardef_context (gfc_expr* e, bool pointer, bool alloc_obj, return true; } + +gfc_expr* +gfc_pdt_find_component_copy_initializer (gfc_symbol *sym, const char *name) +{ + /* The actual length of a pdt is in its components. In the + initializer of the current ref is only the default value. + Therefore traverse the chain of components and pick the correct + one's initializer expressions. */ + for (gfc_component *comp = sym->ts.u.derived->components; comp != NULL; + comp = comp->next) + { + if (!strcmp (comp->name, name)) + return gfc_copy_expr (comp->initializer); + } + return NULL; +} diff --git a/gcc/fortran/gfortran.h b/gcc/fortran/gfortran.h index 98c0cd39503..0b0a8fe7118 100644 --- a/gcc/fortran/gfortran.h +++ b/gcc/fortran/gfortran.h @@ -3667,6 +3667,7 @@ gfc_expr* gfc_find_stat_co (gfc_expr *); gfc_expr* gfc_build_intrinsic_call (gfc_namespace *, gfc_isym_id, const char*, locus, unsigned, ...); bool gfc_check_vardef_context (gfc_expr*, bool, bool, bool, const char*); +gfc_expr* gfc_pdt_find_component_copy_initializer (gfc_symbol *, const char *); /* st.cc */ diff --git a/gcc/fortran/simplify.cc b/gcc/fortran/simplify.cc index 83b4e7d3493..a10f79c4a93 100644 --- a/gcc/fortran/simplify.cc +++ b/gcc/fortran/simplify.cc @@ -4525,19 +4525,50 @@ gfc_simplify_len (gfc_expr *e, gfc_expr *kind) return range_check (result, "LEN"); } else if (e->expr_type == EXPR_VARIABLE && e->ts.type == BT_CHARACTER - && e->symtree->n.sym - && e->symtree->n.sym->ts.type != BT_DERIVED - && e->symtree->n.sym->assoc && e->symtree->n.sym->assoc->target - && e->symtree->n.sym->assoc->target->ts.type == BT_DERIVED - && e->symtree->n.sym->assoc->target->symtree->n.sym - && UNLIMITED_POLY (e->symtree->n.sym->assoc->target->symtree->n.sym)) - - /* The expression in assoc->target points to a ref to the _data component - of the unlimited polymorphic entity. To get the _len component the last - _data ref needs to be stripped and a ref to the _len component added. */ - return gfc_get_len_component (e->symtree->n.sym->assoc->target, k); - else - return NULL; + && e->symtree->n.sym) + { + if (e->symtree->n.sym->ts.type != BT_DERIVED + && e->symtree->n.sym->assoc && e->symtree->n.sym->assoc->target + && e->symtree->n.sym->assoc->target->ts.type == BT_DERIVED + && e->symtree->n.sym->assoc->target->symtree->n.sym + && UNLIMITED_POLY (e->symtree->n.sym->assoc->target->symtree->n.sym)) + /* The expression in assoc->target points to a ref to the _data + component of the unlimited polymorphic entity. To get the _len + component the last _data ref needs to be stripped and a ref to the + _len component added. */ + return gfc_get_len_component (e->symtree->n.sym->assoc->target, k); + else if (e->symtree->n.sym->ts.type == BT_DERIVED + && e->ref && e->ref->type == REF_COMPONENT + && e->ref->u.c.component->attr.pdt_string + && e->ref->u.c.component->ts.type == BT_CHARACTER + && e->ref->u.c.component->ts.u.cl->length) + { + if (gfc_init_expr_flag) + { + gfc_expr* tmp; + tmp = gfc_pdt_find_component_copy_initializer (e->symtree->n.sym, + e->ref->u.c + .component->ts.u.cl + ->length->symtree + ->name); + if (tmp) + return tmp; + } + else + { + gfc_expr *len_expr = gfc_copy_expr (e); + gfc_free_ref_list (len_expr->ref); + len_expr->ref = NULL; + gfc_find_component (len_expr->symtree->n.sym->ts.u.derived, e->ref + ->u.c.component->ts.u.cl->length->symtree + ->name, + false, true, &len_expr->ref); + len_expr->ts = len_expr->ref->u.c.component->ts; + return len_expr; + } + } + } + return NULL; } diff --git a/gcc/testsuite/gfortran.dg/pdt_33.f03 b/gcc/testsuite/gfortran.dg/pdt_33.f03 new file mode 100644 index 00000000000..3b2fe72431d --- /dev/null +++ b/gcc/testsuite/gfortran.dg/pdt_33.f03 @@ -0,0 +1,21 @@ +! { dg-do run } +! +! Test the fix for PR102003, where len parameters where not returned as constants. +! +! Contributed by Harald Anlauf +! +program pr102003 + type pdt(n) + integer, len :: n = 8 + character(len=n) :: c + end type pdt + type(pdt(42)) :: p + integer, parameter :: m = len (p% c) + integer, parameter :: lm = p% c% len + + if (m /= 42) stop 1 + if (len (p% c) /= 42) stop 2 + if (lm /= 42) stop 3 + if (p% c% len /= 42) stop 4 +end +