Only build the SSSE3 tests on machines whose assemblers know about
these instructions.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7387 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index ba3944b..dff6a7b 100644
--- a/configure.in
+++ b/configure.in
@@ -832,6 +832,28 @@
AM_CONDITIONAL(BUILD_SSE3_TESTS, test x$ac_have_as_sse3 = xyes)
+# Ditto for SSSE3 instructions (note extra S)
+# Note, this doesn't generate a C-level symbol. It generates a
+# automake-level symbol (BUILD_SSSE3_TESTS), used in test Makefile.am's
+AC_MSG_CHECKING([if x86/amd64 assembler speaks SSSE3])
+
+AC_TRY_COMPILE(, [
+ do { long long int x;
+ __asm__ __volatile__(
+ "pabsb (%0),%%xmm7" : : "r"(&x) : "xmm7" ); }
+ while (0)
+],
+[
+ac_have_as_ssse3=yes
+AC_MSG_RESULT([yes])
+], [
+ac_have_as_ssse3=no
+AC_MSG_RESULT([no])
+])
+
+AM_CONDITIONAL(BUILD_SSSE3_TESTS, test x$ac_have_as_ssse3 = xyes)
+
+
# Check for TLS support in the compiler and linker
AC_CACHE_CHECK([for TLS support], vg_cv_tls,
[AC_ARG_ENABLE(tls, [ --enable-tls platform supports TLS],