re PR target/84860 (ICE in emit_move_insn, at expr.c:3717)

	PR target/84860
	* optabs.c (emit_conditional_move): Pass address of cmode's copy
	rather than address of cmode as last argument to prepare_cmp_insn.

	* gcc.c-torture/compile/pr84860.c: New test.

From-SVN: r258552

gcc/ChangeLog

+2018-03-15  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/84860
+	* optabs.c (emit_conditional_move): Pass address of cmode's copy
+	rather than address of cmode as last argument to prepare_cmp_insn.
+
 2018-03-15  Julia Koval  <julia.koval@intel.com>
 
 	* config/i386/i386.c (F_AVX512VBMI2, F_GFNI, F_VPCLMULQDQ,

gcc/optabs.c

@@ -4345,9 +4345,10 @@ emit_conditional_move (rtx target, enum rtx_code code, rtx op0, rtx op1,
 	  save_pending_stack_adjust (&save);
 	  last = get_last_insn ();
 	  do_pending_stack_adjust ();
+	  machine_mode cmpmode = cmode;
 	  prepare_cmp_insn (XEXP (comparison, 0), XEXP (comparison, 1),
 			    GET_CODE (comparison), NULL_RTX, unsignedp,
-			    OPTAB_WIDEN, &comparison, &cmode);
+			    OPTAB_WIDEN, &comparison, &cmpmode);
 	  if (comparison)
 	    {
 	      struct expand_operand ops[4];

gcc/testsuite/ChangeLog

+2018-03-15  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/84860
+	* gcc.c-torture/compile/pr84860.c: New test.
+
 2018-03-15  Julia Koval  <julia.koval@intel.com>
 
 	* gcc.target/i386/builtin_target.c (check_intel_cpu_model): Add

gcc/testsuite/gcc.c-torture/compile/pr84860.c

+/* PR target/84860 */
+
+void
+foo (int x, int y)
+{
+  while (x < 1)
+    {
+      x = y;
+      y = ((float)1 / 0) ? 2 : 0;
+    }
+}