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From: Thomas Schwinge <tschwinge@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc r12-5622] [OpenACC] Remove erroneous "Orphan reductions cannot have gang partitioning" handling
Date: Tue, 30 Nov 2021 12:00:28 +0000 (GMT) [thread overview]
Message-ID: <20211130120028.29C77385AC3C@sourceware.org> (raw)
https://gcc.gnu.org/g:365cd5f9ba812c389b404a53d99ab5dded5097f4
commit r12-5622-g365cd5f9ba812c389b404a53d99ab5dded5097f4
Author: Thomas Schwinge <thomas@codesourcery.com>
Date: Fri Nov 26 13:11:16 2021 +0100
[OpenACC] Remove erroneous "Orphan reductions cannot have gang partitioning" handling
That is:
-/* Ensure that the middle end does not assign gang level parallelism
- to orphan loop containing reductions. */
+/* Verify that we diagnose "gang reduction on an orphan loop" for automatically
+ assigned gang level of parallelism. */
... to implement what the OpenACC specification actually says.
Fix-up for preceding commit 2b7dac2c0dcb087da9e4018943c023c0678234a3
"Make OpenACC orphan gang reductions errors".
gcc/
* omp-offload.c (oacc_loop_auto_partitions): Remove erroneous
"Orphan reductions cannot have gang partitioning" handling.
gcc/testsuite/
* c-c++-common/goacc/nested-reductions-1-routine.c: Adjust.
* c-c++-common/goacc/nested-reductions-2-routine.c: Adjust.
* c-c++-common/goacc/orphan-reductions-2.c: Adjust.
* gfortran.dg/goacc/nested-reductions-1-routine.f90: Adjust.
* gfortran.dg/goacc/nested-reductions-2-routine.f90: Adjust.
* gfortran.dg/goacc/orphan-reductions-1.f90: Adjust.
* gfortran.dg/goacc/orphan-reductions-2.f90: Adjust.
Diff:
---
gcc/omp-offload.c | 7 -------
.../goacc/nested-reductions-1-routine.c | 10 ++++++---
.../goacc/nested-reductions-2-routine.c | 17 ++++++++-------
.../c-c++-common/goacc/orphan-reductions-2.c | 24 +++++++++++++---------
.../goacc/nested-reductions-1-routine.f90 | 10 ++++++---
.../goacc/nested-reductions-2-routine.f90 | 17 ++++++++-------
.../gfortran.dg/goacc/orphan-reductions-1.f90 | 4 ++++
.../gfortran.dg/goacc/orphan-reductions-2.f90 | 24 +++++++++++++---------
8 files changed, 62 insertions(+), 51 deletions(-)
diff --git a/gcc/omp-offload.c b/gcc/omp-offload.c
index 5110a424584..5cdb57d9132 100644
--- a/gcc/omp-offload.c
+++ b/gcc/omp-offload.c
@@ -1623,13 +1623,6 @@ oacc_loop_auto_partitions (oacc_loop *loop, unsigned outer_mask,
non-innermost available level. */
unsigned this_mask = GOMP_DIM_MASK (GOMP_DIM_GANG);
- /* Orphan reductions cannot have gang partitioning. */
- if ((loop->flags & OLF_REDUCTION)
- && oacc_get_fn_attrib (current_function_decl)
- && !lookup_attribute ("omp target entrypoint",
- DECL_ATTRIBUTES (current_function_decl)))
- this_mask = GOMP_DIM_MASK (GOMP_DIM_WORKER);
-
/* Find the first outermost available partition. */
while (this_mask <= outer_mask)
this_mask <<= 1;
diff --git a/gcc/testsuite/c-c++-common/goacc/nested-reductions-1-routine.c b/gcc/testsuite/c-c++-common/goacc/nested-reductions-1-routine.c
index 9e34614eb15..45b8cf3451f 100644
--- a/gcc/testsuite/c-c++-common/goacc/nested-reductions-1-routine.c
+++ b/gcc/testsuite/c-c++-common/goacc/nested-reductions-1-routine.c
@@ -8,18 +8,21 @@ void acc_routine (void)
int i, j, k, sum, diff;
{
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
for (j = 0; j < 10; j++)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop collapse(2) reduction(+:sum)
for (i = 0; i < 10; i++)
for (j = 0; j < 10; j++)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop reduction(+:sum)
@@ -27,6 +30,7 @@ void acc_routine (void)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop collapse(2) reduction(+:sum)
@@ -34,6 +38,7 @@ void acc_routine (void)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
for (j = 0; j < 10; j++)
@@ -41,27 +46,26 @@ void acc_routine (void)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop reduction(+:sum)
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(+:sum)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum) reduction(-:diff)
for (i = 0; i < 10; i++)
{
#pragma acc loop reduction(+:sum)
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(+:sum)
for (k = 0; k < 10; k++)
sum = 1;
#pragma acc loop reduction(-:diff)
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(-:diff)
for (k = 0; k < 10; k++)
diff --git a/gcc/testsuite/c-c++-common/goacc/nested-reductions-2-routine.c b/gcc/testsuite/c-c++-common/goacc/nested-reductions-2-routine.c
index 9bd79dea4cf..3b2b0275ec8 100644
--- a/gcc/testsuite/c-c++-common/goacc/nested-reductions-2-routine.c
+++ b/gcc/testsuite/c-c++-common/goacc/nested-reductions-2-routine.c
@@ -8,29 +8,29 @@ void acc_routine (void)
int i, j, k, l, sum, diff;
{
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop // { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(+:sum)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop collapse(2) // { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
for (k = 0; k < 10; k++)
#pragma acc loop reduction(+:sum)
for (l = 0; l < 10; l++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop // { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop // { dg-warning "nested loop in reduction needs reduction clause for .sum." }
// { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
@@ -39,28 +39,28 @@ void acc_routine (void)
for (l = 0; l < 10; l++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop reduction(-:sum) // { dg-warning "conflicting reduction operations for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(+:sum) // { dg-warning "conflicting reduction operations for .sum." }
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop reduction(-:sum) // { dg-warning "conflicting reduction operations for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(-:sum)
for (k = 0; k < 10; k++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop reduction(-:sum) // { dg-warning "conflicting reduction operations for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop // { dg-warning "nested loop in reduction needs reduction clause for .sum." }
// { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
@@ -69,10 +69,10 @@ void acc_routine (void)
for (l = 0; l < 10; l++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum)
for (i = 0; i < 10; i++)
#pragma acc loop reduction(-:sum) // { dg-warning "conflicting reduction operations for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(+:sum) // { dg-warning "conflicting reduction operations for .sum." })
// { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
@@ -81,18 +81,17 @@ void acc_routine (void)
for (l = 0; l < 10; l++)
sum = 1;
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
#pragma acc loop reduction(+:sum) reduction(-:diff)
for (i = 0; i < 10; i++)
{
#pragma acc loop reduction(-:diff) // { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(+:sum)
for (k = 0; k < 10; k++)
sum = 1;
#pragma acc loop reduction(+:sum) // { dg-warning "nested loop in reduction needs reduction clause for .diff." }
- // { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
for (j = 0; j < 10; j++)
#pragma acc loop reduction(-:diff)
for (k = 0; k < 10; k++)
diff --git a/gcc/testsuite/c-c++-common/goacc/orphan-reductions-2.c b/gcc/testsuite/c-c++-common/goacc/orphan-reductions-2.c
index 941e5c6126a..6ff8698a35c 100644
--- a/gcc/testsuite/c-c++-common/goacc/orphan-reductions-2.c
+++ b/gcc/testsuite/c-c++-common/goacc/orphan-reductions-2.c
@@ -1,17 +1,20 @@
-/* Ensure that the middle end does not assign gang level parallelism
- to orphan loop containing reductions. */
+/* Verify that we diagnose "gang reduction on an orphan loop" for automatically
+ assigned gang level of parallelism. */
/* { dg-do compile } */
/* { dg-additional-options "-fopt-info-optimized-omp" } */
/* { dg-additional-options "-Wopenacc-parallelism" } */
#pragma acc routine gang
+/* { dg-bogus "warning: region is worker partitioned but does not contain worker partitioned code" "TODO default 'gang' 'vector'" { xfail *-*-* } .+3 }
+ TODO It's the compiler's own decision to not use 'worker' parallelism here, so it doesn't make sense to bother the user about it. */
int
-f1 () /* { dg-warning "region is gang partitioned but does not contain gang partitioned code" } */
+f1 ()
{
int sum = 0, i;
-#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC worker vector loop parallelism" } */
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
+#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC gang vector loop parallelism" } */
for (i = 0; i < 100; i++)
sum++;
@@ -20,11 +23,12 @@ f1 () /* { dg-warning "region is gang partitioned but does not contain gang part
#pragma acc routine gang
int
-f2 () /* { dg-warning "region is gang partitioned but does not contain gang partitioned code" } */
+f2 ()
{
int sum = 0, i, j;
-#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC worker loop parallelism" } */
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
+#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC gang worker loop parallelism" } */
for (i = 0; i < 100; i++)
#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC vector loop parallelism" } */
for (j = 0; j < 100; j++)
@@ -35,14 +39,14 @@ f2 () /* { dg-warning "region is gang partitioned but does not contain gang part
#pragma acc routine gang
int
-f3 () /* { dg-warning "region is gang partitioned but does not contain gang partitioned code" } */
+f3 ()
{
int sum = 0, i, j, k;
-#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC worker loop parallelism" } */
+ /* { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 } */
+#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC gang loop parallelism" } */
for (i = 0; i < 100; i++)
-#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC seq loop parallelism" } */
- /* { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 } */
+#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC worker loop parallelism" } */
for (j = 0; j < 100; j++)
#pragma acc loop reduction (+:sum) /* { dg-optimized "assigned OpenACC vector loop parallelism" } */
for (k = 0; k < 100; k++)
diff --git a/gcc/testsuite/gfortran.dg/goacc/nested-reductions-1-routine.f90 b/gcc/testsuite/gfortran.dg/goacc/nested-reductions-1-routine.f90
index e8264114714..e1b0a0202d4 100644
--- a/gcc/testsuite/gfortran.dg/goacc/nested-reductions-1-routine.f90
+++ b/gcc/testsuite/gfortran.dg/goacc/nested-reductions-1-routine.f90
@@ -8,6 +8,7 @@ subroutine acc_routine ()
integer :: i, j, k, sum, diff
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
do j = 1, 10
@@ -17,6 +18,7 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop collapse(2) reduction(+:sum)
do i = 1, 10
do j = 1, 10
@@ -26,6 +28,7 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop reduction(+:sum)
@@ -36,6 +39,7 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop collapse(2) reduction(+:sum)
@@ -46,6 +50,7 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
do j = 1, 10
@@ -56,10 +61,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop reduction(+:sum)
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(+:sum)
do k = 1, 10
@@ -68,10 +73,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum) reduction(-:diff)
do i = 1, 10
!$acc loop reduction(+:sum)
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(+:sum)
do k = 1, 10
@@ -80,7 +85,6 @@ subroutine acc_routine ()
end do
!$acc loop reduction(-:diff)
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(-:diff)
do k = 1, 10
diff --git a/gcc/testsuite/gfortran.dg/goacc/nested-reductions-2-routine.f90 b/gcc/testsuite/gfortran.dg/goacc/nested-reductions-2-routine.f90
index 98b1aa641c0..73a05207910 100644
--- a/gcc/testsuite/gfortran.dg/goacc/nested-reductions-2-routine.f90
+++ b/gcc/testsuite/gfortran.dg/goacc/nested-reductions-2-routine.f90
@@ -7,10 +7,10 @@ subroutine acc_routine ()
!$acc routine gang
integer :: i, j, k, l, sum, diff
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop ! { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(+:sum)
do k = 1, 10
@@ -19,10 +19,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop collapse(2) ! { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
do k = 1, 10
!$acc loop reduction(+:sum)
@@ -33,10 +33,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop ! { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop ! { dg-warning "nested loop in reduction needs reduction clause for .sum." }
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
@@ -49,10 +49,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop reduction(-:sum) ! { dg-warning "conflicting reduction operations for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(+:sum) ! { dg-warning "conflicting reduction operations for .sum." }
do k = 1, 10
@@ -61,10 +61,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop reduction(-:sum) ! { dg-warning "conflicting reduction operations for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(-:sum)
do k = 1, 10
@@ -73,10 +73,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop reduction(-:sum) ! { dg-warning "conflicting reduction operations for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop ! { dg-warning "nested loop in reduction needs reduction clause for .sum." }
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
@@ -89,10 +89,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum)
do i = 1, 10
!$acc loop reduction(-:sum) ! { dg-warning "conflicting reduction operations for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(+:sum) ! { dg-warning "conflicting reduction operations for .sum." }
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
@@ -105,10 +105,10 @@ subroutine acc_routine ()
end do
end do
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
!$acc loop reduction(+:sum) reduction(-:diff)
do i = 1, 10
!$acc loop reduction(-:diff) ! { dg-warning "nested loop in reduction needs reduction clause for .sum." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(+:sum)
do k = 1, 10
@@ -117,7 +117,6 @@ subroutine acc_routine ()
end do
!$acc loop reduction(+:sum) ! { dg-warning "nested loop in reduction needs reduction clause for .diff." }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do j = 1, 10
!$acc loop reduction(-:diff)
do k = 1, 10
diff --git a/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-1.f90 b/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-1.f90
index 464dee1260a..8eed080a128 100644
--- a/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-1.f90
+++ b/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-1.f90
@@ -42,6 +42,7 @@ subroutine s2
end do
!$acc loop reduction(+:sum)
+ ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
@@ -92,6 +93,7 @@ integer function f2 ()
end do
!$acc loop reduction(+:sum)
+ ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
@@ -144,6 +146,7 @@ contains
end do
!$acc loop reduction(+:sum)
+ ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
@@ -194,6 +197,7 @@ contains
end do
!$acc loop reduction(+:sum)
+ ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
diff --git a/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-2.f90 b/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-2.f90
index 7ff0a57e620..47f8a326607 100644
--- a/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-2.f90
+++ b/gcc/testsuite/gfortran.dg/goacc/orphan-reductions-2.f90
@@ -1,29 +1,33 @@
-! Ensure that the middle end does not assign gang level parallelism to
-! orphan loop containing reductions.
+! Verify that we diagnose "gang reduction on an orphan loop" for automatically
+! assigned gang level of parallelism.
! { dg-do compile }
! { dg-additional-options "-fopt-info-optimized-omp" }
! { dg-additional-options "-Wopenacc-parallelism" }
-subroutine s1 ! { dg-warning "region is gang partitioned but does not contain gang partitioned code" }
+subroutine s1
implicit none
!$acc routine gang
+ ! { dg-bogus "\[Ww\]arning: region is worker partitioned but does not contain worker partitioned code" "TODO default 'gang' 'vector'" { xfail *-*-* } .-3 }
+ !TODO It's the compiler's own decision to not use 'worker' parallelism here, so it doesn't make sense to bother the user about it.
integer i, sum
sum = 0
- !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC worker vector loop parallelism" }
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
+ !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC gang vector loop parallelism" }
do i = 1, 10
sum = sum + 1
end do
end subroutine s1
-subroutine s2 ! { dg-warning "region is gang partitioned but does not contain gang partitioned code" }
+subroutine s2
implicit none
!$acc routine gang
integer i, j, sum
sum = 0
- !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC worker loop parallelism" }
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
+ !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC gang worker loop parallelism" }
do i = 1, 10
!$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC vector loop parallelism" }
do j = 1, 10
@@ -32,16 +36,16 @@ subroutine s2 ! { dg-warning "region is gang partitioned but does not contain ga
end do
end subroutine s2
-subroutine s3 ! { dg-warning "region is gang partitioned but does not contain gang partitioned code" }
+subroutine s3
implicit none
!$acc routine gang
integer i, j, k, sum
sum = 0
- !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC worker loop parallelism" }
+ ! { dg-error "gang reduction on an orphan loop" "" { target *-*-* } .+1 }
+ !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC gang loop parallelism" }
do i = 1, 10
- !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC seq loop parallelism" }
- ! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
+ !$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC worker loop parallelism" }
do j = 1, 10
!$acc loop reduction (+:sum) ! { dg-optimized "assigned OpenACC vector loop parallelism" }
do k = 1, 10
reply other threads:[~2021-11-30 12:00 UTC|newest]
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