https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102640
Bug ID: 102640
Summary: [11/12 Regression] omp declare target to on C++ block
scope extern declarations since r11-3699
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
Since r11-3699-g4e62aca0e0520e4ed2532f2d8153581190621c1a
the following testcase misbehaves in C++, previously var1, var2, var3 were
correctly mapped (with no copying, as they are declare target to), since that
change it is instead firstprivatized:
/* { dg-do compile } */
/* { dg-additional-options "-fdump-tree-omplower" } */
/* Verify var[123] are mapped without any copying, because they are
mentioned in declare target directive to clauses. */
/* { dg-final { scan-tree-dump-not ".omp_data_arr.\[0-9]*.var" "omplower" } }
*/
/* { dg-final { scan-tree-dump-not ".omp_data_i->var" "omplower" } } */
void
foo (void)
{
extern int var1;
#pragma omp declare target to (var1)
#pragma omp target
var1++;
}
int
bar (int x)
{
extern int var2;
#pragma omp declare target to (var2)
if (x)
return var2;
#pragma omp target
var2++;
return -1;
}
#pragma omp declare target to (bar)
#pragma omp declare target
int
baz (int x)
{
extern int var3;
if (x)
return var3;
#pragma omp target
var3++;
return -1;
}
#pragma omp end declare target
