expmed.c (expand_mult_const): Expand shift into temporary.

	* expmed.c (expand_mult_const) <case alg_shift>: Expand shift into
	temporary. Emit move from temporary to accum, so REG_EQUAL note will
	be attached to this insn in correct mode.

From-SVN: r162910

gcc/ChangeLog

 2010-08-05  Uros Bizjak  <ubizjak@gmail.com>
 
+	* expmed.c (expand_mult_const) <case alg_shift>: Expand shift into
+	temporary. Emit move from temporary to accum, so REG_EQUAL note will
+	be attached to this insn in correct mode.
+
+2010-08-05  Uros Bizjak  <ubizjak@gmail.com>
+
 	* config/i386/i386.c (ix86_decompose_address): Check for SI_REG
 	using REGNO of base_reg directly.
 

gcc/expmed.c

@@ -2904,9 +2904,11 @@ expand_mult_const (enum machine_mode mode, rtx op0, HOST_WIDE_INT val,
       switch (alg->op[opno])
 	{
 	case alg_shift:
-	  accum = expand_shift (LSHIFT_EXPR, mode, accum,
-				build_int_cst (NULL_TREE, log),
-				NULL_RTX, 0);
+	  tem = expand_shift (LSHIFT_EXPR, mode, accum,
+			      build_int_cst (NULL_TREE, log),
+			      NULL_RTX, 0);
+	  /* REG_EQUAL note will be attached to the following insn.  */
+	  emit_move_insn (accum, tem);
 	  val_so_far <<= log;
 	  break;