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From: Warner Losh <imp@FreeBSD.org>
Date: Thu, 19 Feb 2015 20:22:31 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r279018 - head/share/mk
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Author: imp
Date: Thu Feb 19 20:22:30 2015
New Revision: 279018
URL: https://svnweb.freebsd.org/changeset/base/279018

Log:
  Only disable gvn on clang 3.5 and newer.

Modified:
  head/share/mk/bsd.sys.mk

Modified: head/share/mk/bsd.sys.mk
==============================================================================
--- head/share/mk/bsd.sys.mk	Thu Feb 19 19:36:54 2015	(r279017)
+++ head/share/mk/bsd.sys.mk	Thu Feb 19 20:22:30 2015	(r279018)
@@ -118,7 +118,10 @@ CWARNFLAGS+=	-Wno-unknown-pragmas
 CLANG_NO_IAS=	 -no-integrated-as
 .endif
 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
-		 -mllvm -simplifycfg-dup-ret -mllvm -enable-gvn=false
+		 -mllvm -simplifycfg-dup-ret -mllvm
+.if ${COMPILER_VERSION} > 30400
+CLANG_OPT_SMALL+= -enable-gvn=false
+.endif
 CFLAGS.clang+=	 -Qunused-arguments
 .if ${MACHINE_CPUARCH} == "sparc64"
 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.