re PR target/91814 (ICE in elimination_costs_in_insn, at reload1.c:3549 since r274926)

2019-09-19  Richard Biener  <rguenther@suse.de>

	PR target/91814
	* config/i386/i386-features.c (gen_gpr_to_xmm_move_src):
	Force operand to a register if it isn't nonimmediate_operand.

From-SVN: r275971

gcc/ChangeLog

+2019-09-19  Richard Biener  <rguenther@suse.de>
+
+	PR target/91814
+	* config/i386/i386-features.c (gen_gpr_to_xmm_move_src):
+	Force operand to a register if it isn't nonimmediate_operand.
+
 2019-09-19  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* config/arm/arm.md (<logical_op>di3): Use <optab> and <CODE>.

gcc/config/i386/i386-features.c

@@ -668,10 +668,13 @@ scalar_chain::emit_conversion_insns (rtx insns, rtx_insn *after)
 static rtx
 gen_gpr_to_xmm_move_src (enum machine_mode vmode, rtx gpr)
 {
+  if (!nonimmediate_operand (gpr, GET_MODE_INNER (vmode)))
+    gpr = force_reg (GET_MODE_INNER (vmode), gpr);
   switch (GET_MODE_NUNITS (vmode))
     {
     case 1:
-      return gen_rtx_SUBREG (vmode, gpr, 0);
+      /* We are not using this case currently.  */
+      gcc_unreachable ();
     case 2:
       return gen_rtx_VEC_CONCAT (vmode, gpr,
 				 CONST0_RTX (GET_MODE_INNER (vmode)));