From: Chung-Ju Wu <jasonwucj@gmail.com>
Date: Wed, 28 Mar 2018 13:26:42 +0000 (+0000)
Subject: [NDS32] Adjust BRANCH_COST to prevent too much jump when compile with -Os.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=15c193e2f5ce96026cc02828f4f91b1c9e832ea8;p=gcc.git

[NDS32] Adjust BRANCH_COST to prevent too much jump when compile with -Os.

gcc/
	* config/nds32/nds32.h (BRANCH_COST): Adjust cost.

From-SVN: r258921
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 69b715eb099..f7f37cb0717 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2018-03-27  Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32.h (BRANCH_COST): Adjust cost.
+
 2018-03-27  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR target/84914
diff --git a/gcc/config/nds32/nds32.h b/gcc/config/nds32/nds32.h
index 377606775bc..b12274ac25e 100644
--- a/gcc/config/nds32/nds32.h
+++ b/gcc/config/nds32/nds32.h
@@ -865,7 +865,7 @@ enum reg_class
 /* A C expression for the cost of a branch instruction.
    A value of 1 is the default;
    other values are interpreted relative to that.  */
-#define BRANCH_COST(speed_p, predictable_p) ((speed_p) ? 2 : 0)
+#define BRANCH_COST(speed_p, predictable_p) ((speed_p) ? 2 : 1)
 
 /* Override BRANCH_COST heuristic which empirically produces worse
    performance for removing short circuiting from the logical ops.  */