From: Chung-Ju Wu <jasonwucj@gmail.com>
Date: Sun, 18 Mar 2018 04:47:10 +0000 (+0000)
Subject: [NDS32] Define CLZ_DEFINED_VALUE_AT_ZERO.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=24a711668bf5ecdd6b277333d2ab5ef10189f307;p=gcc.git

[NDS32] Define CLZ_DEFINED_VALUE_AT_ZERO.

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

From-SVN: r258627
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a1186fc2dfb..224e8cac9ad 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2018-03-18  Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.
+
 2018-03-17  Chung-Ju Wu  <jasonwucj@gmail.com>
 	    Kito Cheng  <kito.cheng@gmail.com>
 
diff --git a/gcc/config/nds32/nds32.h b/gcc/config/nds32/nds32.h
index 749a55208d4..b350a0cd047 100644
--- a/gcc/config/nds32/nds32.h
+++ b/gcc/config/nds32/nds32.h
@@ -1066,6 +1066,11 @@ enum reg_class
    when the condition is true.  */
 #define STORE_FLAG_VALUE 1
 
+/* A C expression that indicates whether the architecture defines a value for
+   clz or ctz with a zero operand.  In nds32 clz for 0 result 32 is defined
+   in ISA spec */
+#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  ((VALUE) = 32, 1)
+
 /* An alias for the machine mode for pointers.  */
 #define Pmode SImode