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* [gcc(refs/vendors/redhat/heads/gcc-8-branch)] [Fortran] Disable front-end optimization for OpenACC atomic (PR93462)
@ 2020-09-17 16:50 Jakub Jelinek
0 siblings, 0 replies; only message in thread
From: Jakub Jelinek @ 2020-09-17 16:50 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:a73525318cd2bc9928e6635cca3be2b4dfd61e88
commit a73525318cd2bc9928e6635cca3be2b4dfd61e88
Author: Tobias Burnus <tobias@codesourcery.com>
Date: Wed Mar 4 13:29:25 2020 +0100
[Fortran] Disable front-end optimization for OpenACC atomic (PR93462)
Backported from mainline
2020-01-31 Tobias Burnus <tobias@codesourcery.com>
PR fortran/93462
* frontend-passes.c (gfc_code_walker): For EXEC_OACC_ATOMIC, set
in_omp_atomic to true prevent front-end optimization.
PR fortran/93462
* gfortran.dg/goacc/atomic-1.f90: New.
Diff:
---
gcc/fortran/ChangeLog | 9 +++++++++
gcc/fortran/frontend-passes.c | 1 +
gcc/testsuite/ChangeLog | 8 ++++++++
gcc/testsuite/gfortran.dg/goacc/atomic-1.f90 | 17 +++++++++++++++++
4 files changed, 35 insertions(+)
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index d3be7538ff7..d078dfb7533 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,12 @@
+2020-02-04 Tobias Burnus <tobias@codesourcery.com>
+
+ Backported from mainline
+ 2020-01-31 Tobias Burnus <tobias@codesourcery.com>
+
+ PR fortran/93462
+ * frontend-passes.c (gfc_code_walker): For EXEC_OACC_ATOMIC, set
+ in_omp_atomic to true prevent front-end optimization.
+
2020-03-04 Release Manager
* GCC 8.4.0 released.
diff --git a/gcc/fortran/frontend-passes.c b/gcc/fortran/frontend-passes.c
index be0fd0f7e6c..e317c89ba5d 100644
--- a/gcc/fortran/frontend-passes.c
+++ b/gcc/fortran/frontend-passes.c
@@ -4766,6 +4766,7 @@ gfc_code_walker (gfc_code **c, walk_code_fn_t codefn, walk_expr_fn_t exprfn,
WALK_SUBEXPR (co->ext.dt->extra_comma);
break;
+ case EXEC_OACC_ATOMIC:
case EXEC_OMP_ATOMIC:
in_omp_atomic = true;
break;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 42d9e5cb2d7..e0666daa67e 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2020-02-04 Tobias Burnus <tobias@codesourcery.com>
+
+ Backported from mainline
+ 2020-01-31 Tobias Burnus <tobias@codesourcery.com>
+
+ PR fortran/93462
+ * gfortran.dg/goacc/atomic-1.f90: New.
+
2020-03-04 Release Manager
* GCC 8.4.0 released.
diff --git a/gcc/testsuite/gfortran.dg/goacc/atomic-1.f90 b/gcc/testsuite/gfortran.dg/goacc/atomic-1.f90
new file mode 100644
index 00000000000..579f0494b78
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/goacc/atomic-1.f90
@@ -0,0 +1,17 @@
+! { dg-do compile }
+!
+! PR fortran/93462
+!
+! Contributed by G. Steinmetz
+!
+program p
+ integer :: n = 1
+ integer :: a
+!$acc atomic write
+ a = f(n) - f(n)
+contains
+ integer function f(x)
+ integer, intent(in) :: x
+ f = x
+ end
+end
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