1 files changed, 42 insertions, 0 deletions
diff --git a/tests/test-i386-ssse3.c b/tests/test-i386-ssse3.c
new file mode 100644
index 0000000000..0a43d271f7
--- /dev/null
+++ b/tests/test-i386-ssse3.c
@@ -0,0 +1,42 @@
+/* See if various MMX/SSE SSSE3 instructions give expected results */
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char *argv[]) {
+	char hello[16];
+	const char ehlo[8] = "EHLO    ";
+	uint64_t mask = 0x8080800302020001;
+
+	uint64_t a = 0x0000000000090007;
+	uint64_t b = 0x0000000000000000;
+
+	const char c[16] = "LLOaaaaaaaaaaaaa";
+	const char d[16] = "aaaaaaaaaaaaaaHE";
+
+	/* pshufb mm1/xmm1, mm2/xmm2 */
+	asm volatile ("movq    (%0), %%mm0" : : "r" (ehlo) : "mm0", "mm1");
+	asm volatile ("movq    %0, %%mm1" : : "m" (mask));
+	asm volatile ("pshufb  %mm1, %mm0");
+	asm volatile ("movq    %%mm0, %0" : "=m" (hello));
+	printf("%s\n", hello);
+
+	/* pshufb mm1/xmm1, m64/m128 */
+	asm volatile ("movq    (%0), %%mm0" : : "r" (ehlo) : "mm0");
+	asm volatile ("pshufb  %0, %%mm0" : : "m" (mask));
+	asm volatile ("movq    %%mm0, %0" : "=m" (hello));
+	printf("%s\n", hello);
+
+	/* psubsw mm1/xmm1, m64/m128 */
+	asm volatile ("movq    %0, %%mm0" : : "r" (a) : "mm0");
+	asm volatile ("phsubsw %0, %%mm0" : : "m" (b));
+	asm volatile ("movq    %%mm0, %0" : "=m" (a));
+	printf("%i - %i = %i\n", 9, 7, -(int16_t) a);
+
+	/* palignr mm1/xmm1, m64/m128, imm8 */
+	asm volatile ("movdqa  (%0), %%xmm0" : : "r" (c) : "xmm0");
+	asm volatile ("palignr $14, (%0), %%xmm0" : : "r" (d));
+	asm volatile ("movdqa  %%xmm0, (%0)" : : "r" (hello));
+	printf("%5.5s\n", hello);
+
+	return 0;
+}