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authorMichael Meissner <gnu@the-meissners.org>1996-10-17 16:47:51 +0000
committerMichael Meissner <gnu@the-meissners.org>1996-10-17 16:47:51 +0000
commit55116079e2a539d3fe36b7ab8f5ab4932acb74c0 (patch)
treeb13305fe7dd6d7535d94394615e5ea23b4595021 /sim/d10v/configure.in
parentd27d34c382dca49e855531693060967a26cd9bb7 (diff)
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Make simulated loads/stores faster on x86, AIX, and big endian hosts
Diffstat (limited to 'sim/d10v/configure.in')
-rw-r--r--sim/d10v/configure.in12
1 files changed, 12 insertions, 0 deletions
diff --git a/sim/d10v/configure.in b/sim/d10v/configure.in
index cc9c4ad..d260088 100644
--- a/sim/d10v/configure.in
+++ b/sim/d10v/configure.in
@@ -42,6 +42,17 @@ if test x"$silent" != x"yes" && test x"$sim_debug" != x""; then
echo "Setting sim debug = $sim_debug" 6>&1
fi],[sim_cflags=""])dnl
+AC_ARG_ENABLE(sim-bswap,
+[ --enable-sim-bswap Use the BSWAP instruction on Intel 486s and Pentiums.],
+[case "${enableval}" in
+ yes) sim_bswap="-DUSE_BSWAP";;
+ no) sim_bswap="";;
+ *) AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
+ echo "Setting bswap flags = $sim_bswap" 6>&1
+fi],[sim_bswap=""])dnl
+
AC_SUBST(CC_FOR_BUILD)
AC_SUBST(CFLAGS)
AC_SUBST(HDEFINES)
@@ -50,6 +61,7 @@ AC_SUBST(AR)
AC_PROG_RANLIB
AC_SUBST(sim_cflags)
AC_SUBST(sim_debug)
+AC_SUBST(sim_bswap)
# Put a plausible default for CC_FOR_BUILD in Makefile.
AC_C_CROSS