ifcvt.c (noce_emit_move_insn): Construct a SET pattern directly if the RHS isn't…

ifcvt.c (noce_emit_move_insn): Construct a SET pattern directly if the RHS isn't suitable for calling...


	* ifcvt.c (noce_emit_move_insn): Construct a SET pattern directly
	if the RHS isn't suitable for calling emit_move_insn.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r100329

gcc/ChangeLog

+2005-05-29  Roger Sayle  <roger@eyesopen.com>
+	    Richard Henderson  <rth@redhat.com>
+
+	* ifcvt.c (noce_emit_move_insn): Construct a SET pattern directly
+	if the RHS isn't suitable for calling emit_move_insn.
+
 2005-05-29  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* tree-ssa-ccp.c (ccp_fold): Return immediately after calling

gcc/ifcvt.c

@@ -691,7 +691,11 @@ noce_emit_move_insn (rtx x, rtx y)
       optab ot;
 
       start_sequence ();
-      insn = emit_move_insn (x, y);
+      /* Check that the SET_SRC is reasonable before calling emit_move_insn,
+	 otherwise construct a suitable SET pattern ourselves.  */
+      insn = (OBJECT_P (y) || CONSTANT_P (y) || GET_CODE (y) == SUBREG)
+	     ? emit_move_insn (x, y)
+	     : emit_insn (gen_rtx_SET (VOIDmode, x, y));
       seq = get_insns ();
       end_sequence();