1 files changed, 39 insertions, 0 deletions
diff --git a/tests/negr.c b/tests/negr.c
new file mode 100644
index 0000000..db65f3c
--- /dev/null
+++ b/tests/negr.c
@@ -0,0 +1,39 @@
+#include "test.h"
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+	jit_begin(j, arena_base, arena_size);
+	size_t align = jit_enter_jit_abi(j, 0, 0, 0);
+	jit_load_args_1(j, jit_operand_gpr (JIT_OPERAND_ABI_WORD, JIT_R0));
+
+	jit_negr(j, JIT_R0, JIT_R0);
+	jit_leave_jit_abi(j, 0, 0, align);
+	jit_retr(j, JIT_R0);
+
+	jit_word_t (*f)(jit_word_t) = jit_end(j, NULL);
+
+	ASSERT(f(0) == 0);
+#if EJIT_WORDSIZE == 32
+	ASSERT(f(1) == 0xffffffff);
+	ASSERT(f(0xffffffff) == 1);
+	ASSERT(f(0x80000000) == 0x80000000);
+	ASSERT(f(0x7fffffff) == 0x80000001);
+	ASSERT(f(0x80000001) == 0x7fffffff);
+#else
+	ASSERT(f(1) == 0xffffffffffffffff);
+	ASSERT(f(0xffffffff) == 0xffffffff00000001);
+	ASSERT(f(0x80000000) == 0xffffffff80000000);
+	ASSERT(f(0x7fffffff) == 0xffffffff80000001);
+	ASSERT(f(0x80000001) == 0xffffffff7fffffff);
+	ASSERT(f(0xffffffffffffffff) == 1);
+	ASSERT(f(0x8000000000000000) == 0x8000000000000000);
+	ASSERT(f(0x7fffffffffffffff) == 0x8000000000000001);
+#endif
+}
+
+int
+main (int argc, char *argv[])
+{
+	return main_helper(argc, argv, run_test);
+}