Allow MODE_PARTIAL_INT modes for integer constant input operands.

gcc/
	PR other/92090
	* config/rs6000/predicates.md (input_operand): Allow MODE_PARTIAL_INT
	modes for integer constants.

gcc/testsuite/
	PR other/92090
	* gcc.target/powerpc/pr92090.c: New test.

From-SVN: r277928

gcc/ChangeLog

+2019-11-07  Peter Bergner <bergner@linux.ibm.com>
+
+	PR other/92090
+	* config/rs6000/predicates.md (input_operand): Allow MODE_PARTIAL_INT
+	modes for integer constants.
+
 2019-11-07  Jan Hubicka  <jh@suse.cz>
 
 	PR ipa/92406

gcc/config/rs6000/predicates.md

@@ -1047,8 +1047,7 @@
     return 1;
 
   /* Allow any integer constant.  */
-  if (GET_MODE_CLASS (mode) == MODE_INT
-      && CONST_SCALAR_INT_P (op))
+  if (SCALAR_INT_MODE_P (mode) && CONST_SCALAR_INT_P (op))
     return 1;
 
   /* Allow easy vector constants.  */

gcc/testsuite/ChangeLog

+2019-11-07  Peter Bergner <bergner@linux.ibm.com>
+
+	PR other/92090
+	* gcc.target/powerpc/pr92090.c: New test.
+
 2019-11-07  Feng Xue  <fxue@os.amperecomputing.com>
 
 	PR tree-optimization/89134

gcc/testsuite/gcc.target/powerpc/pr92090.c

+/* { dg-do compile } */
+/* { dg-options "-mdejagnu-cpu=power8 -Os -mbig" } */
+
+/* Verify that we don't ICE.  */
+
+_Atomic int a;
+_Atomic long double b, c;
+int j;
+void foo (void);
+void bar (int, int, int, int);
+
+void
+bug (void)
+{
+  b = 1;
+  int d, e, f, g;
+  while (a)
+    ;
+  for (int h = 0; h < 10000; h++)
+    {
+      double i = b /= 3;
+      foo ();
+      if (i)
+	{
+	  if (i == 1)
+	    d++;
+	  e++;
+	  b = 0;
+	}
+      else
+	{
+	  if (i == 2)
+	    f++;
+	  g++;
+	  b = 1;
+	}
+    }
+  bar (d, e, f, g);
+  c = 1;
+  for (int h; h; h++)
+    j = 0;
+}