From: Walter Lee <walt@tilera.com>
Date: Mon, 25 Mar 2013 23:59:38 +0000 (+0000)
Subject: tilegx.c (expand_set_cint64_one_inst): Inline tests for constraint J, K, N, P.
X-Git-Tag: upstream/12.2.0~70676
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b2a3c829cf6285411876eb72069a224ff79151d;p=platform%2Fupstream%2Fgcc.git

tilegx.c (expand_set_cint64_one_inst): Inline tests for constraint J, K, N, P.

       * config/tilegx/tilegx.c (expand_set_cint64_one_inst): Inline
       tests for constraint J, K, N, P.

From-SVN: r197074
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d163b48..fd59b8e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2013-03-25  Walter Lee  <walt@tilera.com>
 
+	* config/tilegx/tilegx.c (expand_set_cint64_one_inst): Inline
+	tests for constraint J, K, N, P.
+
+2013-03-25  Walter Lee  <walt@tilera.com>
+
 	* config/tilegx/tilegx.c (tilegx_asm_preferred_eh_data_format):
 	Use indirect/pcrel encoding.
 	* config/tilepro/tilepro.c (tilepro_asm_preferred_eh_data_format):
diff --git a/gcc/config/tilegx/tilegx.c b/gcc/config/tilegx/tilegx.c
index c6bdbe6..d413621 100644
--- a/gcc/config/tilegx/tilegx.c
+++ b/gcc/config/tilegx/tilegx.c
@@ -1429,14 +1429,16 @@ expand_set_cint64_one_inst (rtx dest_reg,
     }
   else if (!three_wide_only)
     {
-      rtx imm_op = GEN_INT (val);
-
-      if (satisfies_constraint_J (imm_op)
-	  || satisfies_constraint_K (imm_op)
-	  || satisfies_constraint_N (imm_op)
-	  || satisfies_constraint_P (imm_op))
+      /* Test for the following constraints: J, K, N, P.  We avoid
+	 generating an rtx and using existing predicates because we
+	 can be testing and rejecting a lot of constants, and GEN_INT
+	 is O(N).  */
+      if ((val >= -32768 && val <= 65535)
+	  || ((val == (val & 0xFF) * 0x0101010101010101LL))
+	  || (val == ((trunc_int_for_mode (val, QImode) & 0xFFFF)
+		      * 0x0001000100010001LL)))
 	{
-	  emit_move_insn (dest_reg, imm_op);
+	  emit_move_insn (dest_reg, GEN_INT (val));
 	  return true;
 	}
     }