From: Chung-Ju Wu <jasonwucj@gmail.com>
Date: Sun, 18 Mar 2018 06:18:18 +0000 (+0000)
Subject: [NDS32] Define LOGICAL_OP_NON_SHORT_CIRCUIT.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=08ed6d295585c3e0433a16303fdbd42e4ef1cc1b;p=gcc.git

[NDS32] Define LOGICAL_OP_NON_SHORT_CIRCUIT.

gcc/
	* config/nds32/nds32.h (LOGICAL_OP_NON_SHORT_CIRCUIT): Define.

From-SVN: r258628
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 224e8cac9ad..ea9ada66865 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32.h (LOGICAL_OP_NON_SHORT_CIRCUIT): Define.
+
 2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>
 
 	* config/nds32/nds32.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.
diff --git a/gcc/config/nds32/nds32.h b/gcc/config/nds32/nds32.h
index b350a0cd047..ed6de26cf6e 100644
--- a/gcc/config/nds32/nds32.h
+++ b/gcc/config/nds32/nds32.h
@@ -867,6 +867,10 @@ enum reg_class
    other values are interpreted relative to that.  */
 #define BRANCH_COST(speed_p, predictable_p) ((speed_p) ? 2 : 0)
 
+/* Override BRANCH_COST heuristic which empirically produces worse
+   performance for removing short circuiting from the logical ops.  */
+#define LOGICAL_OP_NON_SHORT_CIRCUIT 0
+
 #define SLOW_BYTE_ACCESS 1
 
 #define NO_FUNCTION_CSE 1