Commit symbol for external BLAS routine when translating MATMUL to *GEMM.

2019-11-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/92321
	* frontend-passes.c (call_external_blas): Commit symbol for
	external BLAS routine.

2019-11-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/92321
	* gfortran.dg/matmul_blas_2.f90: New test.

From-SVN: r278003

gcc/fortran/ChangeLog

+2019-11-09  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR fortran/92321
+	* frontend-passes.c (call_external_blas): Commit symbol for
+	external BLAS routine.
+
 2019-11-08  Jakub Jelinek  <jakub@redhat.com>
 
 	* arith.c (character2representation): Change i type to size_t.

gcc/fortran/frontend-passes.c

@@ -4635,6 +4635,7 @@ call_external_blas (gfc_code **c, int *walk_subtrees ATTRIBUTE_UNUSED,
   call->symtree->n.sym->attr.procedure = 1;
   call->symtree->n.sym->attr.flavor = FL_PROCEDURE;
   call->resolved_sym = call->symtree->n.sym;
+  gfc_commit_symbol (call->resolved_sym);
 
   /* Argument TRANSA.  */
   next = gfc_get_actual_arglist ();

gcc/testsuite/ChangeLog

+2019-11-09  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR fortran/92321
+	* gfortran.dg/matmul_blas_2.f90: New test.
+
 2019-11-09  Jakub Jelinek  <jakub@redhat.com>
 
 	* gfortran.dg/dec_char_conversion_in_assignment_4.f90: Use

gcc/testsuite/gfortran.dg/matmul_blas_2.f90

+! { dg-do compile }
+! { dg-options "-O3 -fdump-tree-original -fexternal-blas" }
+! PR fortran/92321 - this used to cause an ICE.  Original test case
+! by Nathan Wukie.
+
+module mod_badmatmul
+    implicit none
+contains
+
+    subroutine test(c)
+        real, intent(inout) :: c(3,3)
+        real :: a(3,3), b(3,3)
+        c = matmul(a, b)
+    end subroutine test
+
+end module mod_badmatmul
+
+program main
+    use mod_badmatmul, only: test
+    implicit none
+
+    real :: a(3,3)
+    call test(a)
+
+end program main