re PR target/19803 (__builtin_expect does not modify branch prediction for power4/5)

PR target/19803 * predict.c (PROB_VERY_UNLIKELY): Use 1% instead of 10%. From-SVN: r94714

re PR target/19803 (__builtin_expect does not modify branch prediction for power4/5)
PR target/19803 * predict.c (PROB_VERY_UNLIKELY): Use 1% instead of 10%. From-SVN: r94714
b0ad2de2 · Alan Modra · Alan Modra · 0384c765 · b0ad2de2 · b0ad2de2
Commit b0ad2de2 authored Feb 07, 2005 by Alan Modra Committed by Alan Modra Feb 08, 2005
Hide whitespace changes
Inline Side-by-side

Showing with 6 additions and 1 deletions

gcc/ChangeLog
+5 -0

gcc/predict.c
+1 -1

No files found.
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2005-02-08  Alan Modra  <amodra@bigpond.net.au>
+
+	PR target/19803
+	* predict.c (PROB_VERY_UNLIKELY): Use 1% instead of 10%.
+
 2005-02-07  Eric Botcazou  <ebotcazou@libertysurf.fr>

 	PR debug/19327

--- a/gcc/predict.c
+++ b/gcc/predict.c
@@ -67,7 +67,7 @@ static sreal real_zero, real_one, real_almost_one, real_br_prob_base,
 	     real_inv_br_prob_base, real_one_half, real_bb_freq_max;

 /* Random guesstimation given names.  */
-#define PROB_VERY_UNLIKELY	(REG_BR_PROB_BASE / 10 - 1)
+#define PROB_VERY_UNLIKELY	(REG_BR_PROB_BASE / 100 - 1)
 #define PROB_EVEN		(REG_BR_PROB_BASE / 2)
 #define PROB_VERY_LIKELY	(REG_BR_PROB_BASE - PROB_VERY_UNLIKELY)
 #define PROB_ALWAYS		(REG_BR_PROB_BASE)