From: Oleg Endo <olegendo@gcc.gnu.org>
Date: Mon, 30 Jul 2012 06:43:20 +0000 (+0000)
Subject: re PR target/54089 ([SH] Refactor shift patterns)
X-Git-Tag: releases/gcc-4.8.0~4225
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=be82afe609f07d51a1d57fecbd1daf1882528f4c;p=thirdparty%2Fgcc.git

re PR target/54089 ([SH] Refactor shift patterns)

	PR target/54089
	* config/sh/sh.md (ashlsi3_d): Invoke gen_shifty_op directly instead
	of trying to emit ashlsi3_n.

From-SVN: r189952
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ec3d4d0a653f..c734d9341f5c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-07-30  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/54089
+	* config/sh/sh.md (ashlsi3_d): Invoke gen_shifty_op directly instead
+	of trying to emit ashlsi3_n.
+
 2012-07-30  Laurynas Biveinis  <laurynas.biveinis@gmail.com>
 	    Steven Bosscher  <steven@gcc.gnu.org>
 
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index d8be11164d38..b9be1290d607 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -3533,7 +3533,12 @@ label:
     }
   else if (!satisfies_constraint_P27 (operands[2]))
     {
-      emit_insn (gen_ashlsi3_n (operands[0], operands[1], operands[2]));
+      /* This must happen before reload, otherwise the constant will be moved
+	 into a register due to the "r" constraint, after which this split
+	 cannot be done anymore.
+	 Unfortunately the move insn will not always be eliminated.  */
+      emit_move_insn (operands[0], operands[1]);
+      gen_shifty_op (ASHIFT, operands);
       DONE;
     }