i386.md (*ashlqi3_1_slp): New insn pattern.

	* config/i386/i386.md (*ashlqi3_1_slp): New insn pattern.

From-SVN: r158293

gcc/ChangeLog

+2010-04-14  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.md (*ashlqi3_1_slp): New insn pattern.
+
 2010-04-13  Jan Hubicka  <jh@suse.cz>
 
 	* ipa-inline.c (cgraph_mark_inline_edge): Avoid double accounting
@@ -53,11 +57,9 @@
 	* Makefile.in (c-pch.o, ggc-common.o): Depend on timevar.h.
 	* c-pch.c: Include timevar.h.
 	(c_common_write_pch): Use TV_PCH_SAVE and TV_PCH_CPP_SAVE timers.
-	(c_common_read_pch): Use TV_PCH_RESTORE and TV_PCH_CPP_RESTORE
-	timers.
+	(c_common_read_pch): Use TV_PCH_RESTORE and TV_PCH_CPP_RESTORE timers.
 	* ggc-common.c: Include timevar.h.
-	(gt_pch_save): Use TV_PCH_PTR_REALLOC and TV_PCH_PTR_SORT
-	timers.
+	(gt_pch_save): Use TV_PCH_PTR_REALLOC and TV_PCH_PTR_SORT timers.
 	* timevar.def (TV_PCH_SAVE): Define.
 	(TV_PCH_CPP_SAVE): Define.
 	(TV_PCH_PTR_REALLOC): Define.

gcc/config/i386/i386.md

@@ -9986,6 +9986,50 @@
        (const_string "*")))
    (set_attr "mode" "QI,SI,SI")])
 
+(define_insn "*ashlqi3_1_slp"
+  [(set (strict_low_part (match_operand:QI 0 "nonimmediate_operand" "+qm"))
+	(ashift:QI (match_dup 0)
+		   (match_operand:QI 1 "nonmemory_operand" "cI")))
+   (clobber (reg:CC FLAGS_REG))]
+  "(optimize_function_for_size_p (cfun)
+    || !TARGET_PARTIAL_FLAG_REG_STALL
+    || (operands[1] == const1_rtx
+	&& (TARGET_SHIFT1
+	    || (TARGET_DOUBLE_WITH_ADD && REG_P (operands[0])))))"
+{
+  switch (get_attr_type (insn))
+    {
+    case TYPE_ALU:
+      gcc_assert (operands[1] == const1_rtx);
+      return "add{b}\t%0, %0";
+
+    default:
+      if (operands[1] == const1_rtx
+	  && (TARGET_SHIFT1 || optimize_function_for_size_p (cfun)))
+	return "sal{b}\t%0";
+      else
+	return "sal{b}\t{%1, %0|%0, %1}";
+    }
+}
+  [(set (attr "type")
+     (cond [(and (and (ne (symbol_ref "TARGET_DOUBLE_WITH_ADD")
+		          (const_int 0))
+		      (match_operand 0 "register_operand" ""))
+		 (match_operand 1 "const1_operand" ""))
+	      (const_string "alu")
+	   ]
+	   (const_string "ishift1")))
+   (set (attr "length_immediate")
+     (if_then_else
+       (ior (eq_attr "type" "alu")
+	    (and (eq_attr "type" "ishift1")
+		 (and (match_operand 1 "const1_operand" "")
+		      (ne (symbol_ref "TARGET_SHIFT1 || optimize_function_for_size_p (cfun)")
+			  (const_int 0)))))
+       (const_string "0")
+       (const_string "*")))
+   (set_attr "mode" "QI")])
+
 ;; Convert lea to the lea pattern to avoid flags dependency.
 (define_split
   [(set (match_operand:DI 0 "register_operand" "")