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From: Jung-uk Kim <jkim@FreeBSD.org>
Date: Fri, 2 Aug 2013 19:10:46 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-projects@freebsd.org
Subject: svn commit: r253892 - in projects/atomic64/sys: amd64/include
 i386/include
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Author: jkim
Date: Fri Aug  2 19:10:46 2013
New Revision: 253892
URL: http://svnweb.freebsd.org/changeset/base/253892

Log:
  Refine r253891.  Compiler does not know the BTS instruction implicitly does
  modulo operation and generates poor code when the function is not inlined.

Modified:
  projects/atomic64/sys/amd64/include/atomic.h
  projects/atomic64/sys/i386/include/atomic.h

Modified: projects/atomic64/sys/amd64/include/atomic.h
==============================================================================
--- projects/atomic64/sys/amd64/include/atomic.h	Fri Aug  2 18:32:01 2013	(r253891)
+++ projects/atomic64/sys/amd64/include/atomic.h	Fri Aug  2 19:10:46 2013	(r253892)
@@ -225,7 +225,7 @@ atomic_testandset_int(volatile u_int *p,
 	"# atomic_testandset_int"
 	: "=r" (res),			/* 0 */
 	  "=m" (*p)			/* 1 */
-	: "Ir" (v % 32),		/* 2 */
+	: "ir" (v),			/* 2 */
 	  "m" (*p)			/* 3 */
 	: "cc");
 	return (res);
@@ -243,7 +243,7 @@ atomic_testandset_long(volatile u_long *
 	"# atomic_testandset_long"
 	: "=r" (res),			/* 0 */
 	  "=m" (*p)			/* 1 */
-	: "Jr" ((u_long)v % 64),	/* 2 */
+	: "ir" ((u_long)v),		/* 2 */
 	  "m" (*p)			/* 3 */
 	: "cc");
 	return (res);

Modified: projects/atomic64/sys/i386/include/atomic.h
==============================================================================
--- projects/atomic64/sys/i386/include/atomic.h	Fri Aug  2 18:32:01 2013	(r253891)
+++ projects/atomic64/sys/i386/include/atomic.h	Fri Aug  2 19:10:46 2013	(r253892)
@@ -366,7 +366,7 @@ atomic_testandset_int(volatile u_int *p,
 	"# atomic_testandset_int"
 	: "=r" (res),			/* 0 */
 	  "=m" (*p)			/* 1 */
-	: "Ir" (v % 32),		/* 2 */
+	: "ir" (v),			/* 2 */
 	  "m" (*p)			/* 3 */
 	: "cc");
 	return (res);