@@ -185,6 +185,9 @@
/* Define to 1 if you have the `putc_unlocked' function. */
#undef HAVE_PUTC_UNLOCKED
+/* Define to 1 if you can assemble SSE4 insns. */
+#undef HAVE_SSE4
+
/* Define to 1 if you have the <stddef.h> header file. */
#undef HAVE_STDDEF_H
@@ -7209,6 +7209,27 @@ cat >>confdefs.h <<_ACEOF
_ACEOF
+case $target in
+ i?86-* | x86_64-*)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_SSE4 1" >>confdefs.h
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+esac
+
# Output.
ac_config_headers="$ac_config_headers config.h:config.in"
@@ -184,6 +184,13 @@ AC_DEFINE_UNQUOTED(HOST_WIDE_INT, $host_wide_int,
[Define to the widest efficient host integer type at least
as wide as the target's size_t type.])
+case $target in
+ i?86-* | x86_64-*)
+ AC_TRY_COMPILE([], [asm ("pcmpestri %0, %%xmm0, %%xmm1" : : "i"(0))],
+ [AC_DEFINE([HAVE_SSE4], [1],
+ [Define to 1 if you can assemble SSE4 insns.])])
+esac
+
# Output.
AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
@@ -400,6 +400,7 @@ search_line_sse2 (const uchar *s, const uchar *end ATTRIBUTE_UNUSED)
return (const uchar *)p + found;
}
+#ifdef HAVE_SSE4
/* A version of the fast scanner using SSE 4.2 vectorized string insns. */
static const uchar *
@@ -454,6 +455,11 @@ search_line_sse42 (const uchar *s, const uchar *end)
return s + index;
}
+#else
+/* Work around out-dated assemblers without sse4 support. */
+#define search_line_sse42 search_line_sse2
+#endif
+
/* Check the CPU capabilities. */
#include "../gcc/config/i386/cpuid.h"