re PR fortran/84133 (ICE in gimplify_var_or_parm_decl, at gimplify.c:2706)

2018-01-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84133
	* frontend-passes (matmul_to_var_expr): Return early if
	in association list.
	(inline_matmul_assign): Likewise.

2018-01-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84133
	* gfortran.dg/inline_matmul_21.f90: New test case.

From-SVN: r257206

gcc/fortran/ChangeLog

+2018-01-30  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR fortran/84133
+	* frontend-passes (matmul_to_var_expr): Return early if
+	in association list.
+	(inline_matmul_assign): Likewise.
+
 2017-01-29  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/84073

gcc/fortran/frontend-passes.c

@@ -2763,7 +2763,7 @@ matmul_to_var_expr (gfc_expr **ep, int *walk_subtrees ATTRIBUTE_UNUSED,
     return 0;
 
   if (forall_level > 0 || iterator_level > 0 || in_omp_workshare
-      || in_where)
+      || in_where || in_assoc_list)
     return 0;
 
   /* Check if this is already in the form c = matmul(a,b).  */
@@ -3728,7 +3728,7 @@ inline_matmul_assign (gfc_code **c, int *walk_subtrees,
   if (co->op != EXEC_ASSIGN)
     return 0;
 
-  if (in_where)
+  if (in_where || in_assoc_list)
     return 0;
 
   /* The BLOCKS generated for the temporary variables and FORALL don't

gcc/testsuite/ChangeLog

+2018-01-30  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR fortran/84133
+	* gfortran.dg/inline_matmul_21.f90: New test case.
+
 2018-01-30  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* g++.dg/torture/pr81360.C: Add -fdump-ipa-icf to dg-options.

gcc/testsuite/gfortran.dg/inline_matmul_21.f90

+! { dg-do compile }
+! { dg-additional-options "-ffrontend-optimize" }
+! PR 84133 - this used to ICE. Original test case by
+! Gerhard Steinmetz.
+
+program p
+   real :: x(2,2) = 1.0
+   real :: z(2,2)
+   associate (y => matmul(x,x))
+      z = y
+   end associate
+   print *, z
+end
+
+