https://gcc.gnu.org/g:c99cdcab4f1c497a872cf552138fd8ea27e9a5eb
commit r15-2472-gc99cdcab4f1c497a872cf552138fd8ea27e9a5eb
Author: Tobias Burnus <tbur...@baylibre.com>
Date: Thu Aug 1 09:06:32 2024 +0200
omp-offload.cc: Fix value-expr handling of 'declare target link' vars
[PR115637]
As the PR and included testcase shows, replacing 'arr2' by its value
expression
'*arr2$13$linkptr' failed for
MEM <uint128_t> [(c_char * {ref-all})&arr2]
which left 'arr2' in the code as unknown symbol. Now expand the value
expression
already in pass_omp_target_link::execute's process_link_var_op
walk_gimple_stmt
walk - and don't rely on gimple_regimplify_operands.
PR middle-end/115637
gcc/ChangeLog:
* gimplify.cc (gimplify_body): Fix macro name in the comment.
* omp-offload.cc (find_link_var_op): Rename to ...
(process_link_var_op): ... this. Replace value expr.
(pass_omp_target_link::execute): Update walk_gimple_stmt call.
libgomp/ChangeLog:
* testsuite/libgomp.fortran/declare-target-link.f90: Uncomment
now working code.
Co-authored-by: Richard Biener <rguent...@suse.de
Diff:
---
gcc/gimplify.cc | 2 +-
gcc/omp-offload.cc | 11 ++++++++---
libgomp/testsuite/libgomp.fortran/declare-target-link.f90 | 15 ++++++---------
3 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/gcc/gimplify.cc b/gcc/gimplify.cc
index c77a53bdfcee..30bfecf67e5e 100644
--- a/gcc/gimplify.cc
+++ b/gcc/gimplify.cc
@@ -19423,7 +19423,7 @@ gimplify_body (tree fndecl, bool do_parms)
DECL_SAVED_TREE (fndecl) = NULL_TREE;
/* If we had callee-copies statements, insert them at the beginning
- of the function and clear DECL_VALUE_EXPR_P on the parameters. */
+ of the function and clear DECL_HAS_VALUE_EXPR_P on the parameters. */
if (!gimple_seq_empty_p (parm_stmts))
{
tree parm;
diff --git a/gcc/omp-offload.cc b/gcc/omp-offload.cc
index 35313c2ecf3c..934fbd80bdd1 100644
--- a/gcc/omp-offload.cc
+++ b/gcc/omp-offload.cc
@@ -2884,8 +2884,9 @@ public:
/* Callback for walk_gimple_stmt used to scan for link var operands. */
static tree
-find_link_var_op (tree *tp, int *walk_subtrees, void *)
+process_link_var_op (tree *tp, int *walk_subtrees, void *data)
{
+ struct walk_stmt_info *wi = (struct walk_stmt_info *) data;
tree t = *tp;
if (VAR_P (t)
@@ -2893,8 +2894,9 @@ find_link_var_op (tree *tp, int *walk_subtrees, void *)
&& is_global_var (t)
&& lookup_attribute ("omp declare target link", DECL_ATTRIBUTES (t)))
{
+ wi->info = *tp = unshare_expr (DECL_VALUE_EXPR (t));
*walk_subtrees = 0;
- return t;
+ return NULL_TREE;
}
return NULL_TREE;
@@ -2924,7 +2926,10 @@ pass_omp_target_link::execute (function *fun)
gimple_call_set_arg (gsi_stmt (gsi), 1, null_pointer_node);
update_stmt (gsi_stmt (gsi));
}
- if (walk_gimple_stmt (&gsi, NULL, find_link_var_op, NULL))
+ struct walk_stmt_info wi;
+ memset (&wi, 0, sizeof (wi));
+ walk_gimple_stmt (&gsi, NULL, process_link_var_op, &wi);
+ if (wi.info)
gimple_regimplify_operands (gsi_stmt (gsi), &gsi);
}
}
diff --git a/libgomp/testsuite/libgomp.fortran/declare-target-link.f90
b/libgomp/testsuite/libgomp.fortran/declare-target-link.f90
index 2ce212d114fa..44c67f925bda 100644
--- a/libgomp/testsuite/libgomp.fortran/declare-target-link.f90
+++ b/libgomp/testsuite/libgomp.fortran/declare-target-link.f90
@@ -1,5 +1,7 @@
! { dg-additional-options "-Wall" }
+
! PR fortran/115559
+! PR middle-end/115637
module m
integer :: A
@@ -73,24 +75,19 @@ contains
!$omp target map(from:res)
res = run_device1()
!$omp end target
- print *, res
- ! FIXME: arr2 not link mapped -> PR115637
- ! if (res /= -11436) stop 5
- if (res /= -11546) stop 5 ! FIXME
+ ! print *, res
+ if (res /= -11436) stop 5
end
integer function run_device1()
!$omp declare target
integer :: i
run_device1 = -99
- ! FIXME: arr2 not link mapped -> PR115637
- ! arr2 = [11,22,33,44]
+ arr2 = [11,22,33,44]
if (any (arr(10:50) /= [(i, i=10,50)])) then
run_device1 = arr(11)
return
end if
- ! FIXME: -> PR115637
- ! run_device1 = sum(arr(10:13) + arr2)
- run_device1 = sum(arr(10:13) ) ! FIXME
+ run_device1 = sum(arr(10:13) + arr2)
do i = 10, 50
arr(i) = 3 - 10 * arr(i)
end do
