From: bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 28 Oct 2000 19:42:48 +0000 (+0000)
Subject: Use dynamic branch prediction hint in more cases.
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d676f1151c4b90fb416ba9d8ad532ba9f8b9ba6e;p=thirdparty%2Fgcc.git

Use dynamic branch prediction hint in more cases.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37105 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 656551cf9239..e3d1ec71dfb1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -8,6 +8,8 @@
 
 	* config/ia64/ia64.h (RTX_COSTS): A few more entries, and a more
 	accurate value for MULT.
+	* config/ia64/ia64.c (ia64_print_operand): Require probability to be
+	2% or > 98% before using static branch prediction bits.
 
 2000-10-28  Neil Booth  <neilb@earthling.net>
 
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 6790d3f3ab4b..47b9902c5d83 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -3311,11 +3311,11 @@ ia64_print_operand (file, x, code)
 	    int pred_val = INTVAL (XEXP (x, 0));
 
 	    /* Guess top and bottom 10% statically predicted.  */
-	    if (pred_val < REG_BR_PROB_BASE / 10)
+	    if (pred_val < REG_BR_PROB_BASE / 50)
 	      which = ".spnt";
 	    else if (pred_val < REG_BR_PROB_BASE / 2)
 	      which = ".dpnt";
-	    else if (pred_val < REG_BR_PROB_BASE * 9 / 10)
+	    else if (pred_val < REG_BR_PROB_BASE / 100 * 98)
 	      which = ".dptk";
 	    else
 	      which = ".sptk";