re PR middle-end/70643 (broken openacc reduction inside a fortran module)

	PR middle-end/70643

	gcc/
	* omp-low.c (lower_oacc_reductions): Check for TREE_CONSTANT
	when building a mem ref for the incoming reduction variable.

	libgomp/
	* testsuite/libgomp.oacc-fortran/pr70643.f90: New test.

From-SVN: r234973

gcc/ChangeLog

+2016-04-14  Cesar Philippidis  <cesar@codesourcery.com>
+
+	PR middle-end/70643
+	* omp-low.c (lower_oacc_reductions): Check for TREE_CONSTANT
+	when building a mem ref for the incoming reduction variable.
+
 2016-04-14  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/70614

gcc/omp-low.c

@@ -5691,7 +5691,7 @@ lower_oacc_reductions (location_t loc, tree clauses, tree level, bool inner,
 	    v3 = build_simple_mem_ref (v3);
 	    outgoing = build_simple_mem_ref (outgoing);
 
-	    if (TREE_CODE (incoming) != INTEGER_CST)
+	    if (!TREE_CONSTANT (incoming))
 	      incoming = build_simple_mem_ref (incoming);
 	  }
 	else

libgomp/ChangeLog

+2016-04-14  Cesar Philippidis  <cesar@codesourcery.com>
+
+	PR middle-end/70643
+	* testsuite/libgomp.oacc-fortran/pr70643.f90: New test.
+
 2016-04-13  Cesar Philippidis  <cesar@codesourcery.com>
 
 	PR testsuite/68242

libgomp/testsuite/libgomp.oacc-fortran/pr70643.f90

+MODULE reduction_test
+
+CONTAINS
+
+SUBROUTINE reduction_kernel(x_min,x_max,y_min,y_max,arr,sum)
+
+  IMPLICIT NONE
+
+  INTEGER      :: x_min,x_max,y_min,y_max
+  REAL(KIND=8), DIMENSION(x_min-2:x_max+2,y_min-2:y_max+2) :: arr
+  REAL(KIND=8) :: sum
+
+  INTEGER      :: j,k
+
+!$ACC DATA PRESENT(arr) COPY(sum)
+!$ACC PARALLEL LOOP REDUCTION(+ : sum)
+  DO k=y_min,y_max
+    DO j=x_min,x_max
+      sum=sum+arr(j,k)
+    ENDDO
+  ENDDO
+!$ACC END PARALLEL LOOP
+!$ACC END DATA
+END SUBROUTINE reduction_kernel
+
+END MODULE reduction_test
+
+program main
+    use reduction_test
+
+    integer :: x_min,x_max,y_min,y_max
+    real(kind=8), dimension(1:10,1:10) :: arr
+    real(kind=8) :: sum
+
+    x_min = 1
+    x_max = 2
+    y_min = 1
+    y_max = 2
+
+    arr(:,:) = 1.0
+
+    sum = 0.0
+
+    !$acc data copy(arr)
+
+    call reduction_kernel(x_min,x_max,y_min,y_max,arr,sum)
+
+    !$acc end data
+
+    if (sum .ne. 4.0) call abort
+end program