re PR middle-end/82976 (Error: non-trivial conversion at assignment since r254526)

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
	Andrew Pinski <pinsika@gcc.gnu.org>

	PR middle-end/82976
	* match.pd: Use constant_boolean_node of correct type instead of
	boolean_true_node or boolean_false_node for simplifying
	pointer comparisons to zero.

2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR middle-end/82976
	* gfortran.dg/realloc_on_assign_16a.f90: New test.


Co-Authored-By: Andrew Pinski <pinskia@gcc.gnu.org>

From-SVN: r259212

gcc/ChangeLog

+2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
+	Andrew Pinski <pinsika@gcc.gnu.org>
+
+	PR middle-end/82976
+	* match.pd: Use constant_boolean_node of correct type instead of
+	boolean_true_node or boolean_false_node for simplifying
+	pointer comparisons to zero.
+
 2018-04-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/80021

gcc/match.pd

@@ -3700,7 +3700,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
   (neeq @0 @1)
   (if (POINTER_TYPE_P (TREE_TYPE (@0))
        && ptrs_compare_unequal (@0, @1))
-   { neeq == EQ_EXPR ? boolean_false_node : boolean_true_node; })))
+   { constant_boolean_node (neeq != EQ_EXPR, type); })))
 
 /* PR70920: Transform (intptr_t)x eq/ne CST to x eq/ne (typeof x) CST.
    and (typeof ptr_cst) x eq/ne ptr_cst to x eq/ne (typeof x) CST.

gcc/testsuite/ChangeLog

+2018-04-07  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR middle-end/82976
+	* gfortran.dg/realloc_on_assign_16a.f90: New test.
+
 2018-04-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/85257

gcc/testsuite/gfortran.dg/realloc_on_assign_16a.f90

+! { dg-do compile }
+! { dg-options "-Ofast -fno-tree-forwprop" }
+! Test that PR 82976 is fixed, this used to ICE.
+!
+! Contributed by Stefan Mauerberger  <stefan.mauerberger@gmail.com>
+!
+PROGRAM main
+    !USE MPI
+
+    TYPE :: test_typ
+        REAL, ALLOCATABLE :: a(:)
+    END TYPE
+
+    TYPE(test_typ) :: xx, yy
+    TYPE(test_typ), ALLOCATABLE :: conc(:)
+
+    !CALL MPI_INIT(i)
+
+    xx = test_typ( [1.0,2.0] )
+    yy = test_typ( [4.0,4.9] )
+
+    conc = [ xx, yy ]
+
+    if (any (int (10.0*conc(1)%a) .ne. [10,20])) STOP 1
+    if (any (int (10.0*conc(2)%a) .ne. [40,49])) STOP 2
+
+    !CALL MPI_FINALIZE(i)
+
+END PROGRAM main