From: Mika Lindqvist <postmaster@raasu.org>
Date: Sun, 30 Oct 2016 12:36:09 +0000 (+0200)
Subject: Add ARM implementation of CTZL for Visual C++.
X-Git-Tag: 1.9.9-b1~660^2~22^2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=27f42890a1a9af2de387e197cc1af9adc92ab070;p=thirdparty%2Fzlib-ng.git

Add ARM implementation of CTZL for Visual C++.
---

diff --git a/arch/arm/ctzl.h b/arch/arm/ctzl.h
new file mode 100644
index 000000000..f27cb95e2
--- /dev/null
+++ b/arch/arm/ctzl.h
@@ -0,0 +1,13 @@
+#ifndef ARM_CTZL_H
+#define ARM_CTZL_H
+
+#include <armintr.h>
+
+#if defined(_MSC_VER) && !defined(__clang__)
+static __forceinline unsigned long __builtin_ctzl(unsigned long value)
+{
+	return _arm_clz(_arm_rbit(value));
+}
+#endif
+
+#endif
diff --git a/match.c b/match.c
index b731246c0..18874dfec 100644
--- a/match.c
+++ b/match.c
@@ -31,6 +31,8 @@
 #if defined(_MSC_VER) && !defined(__clang__)
 # if defined(_M_IX86) || defined(_M_AMD64) || defined(_M_IA64)
 #  include "arch/x86/ctzl.h"
+# elif defined(_M_ARM)
+#  include "arch/arm/ctzl.h"
 # endif
 #endif