Reviewed-by: Pierrick Bouvier <[email protected]>
Link:
https://lore.kernel.org/qemu-devel/[email protected]
Signed-off-by: Brian Cain <[email protected]>
---
tests/tcg/hexagon/hvx_misc.c | 44 ++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/tests/tcg/hexagon/hvx_misc.c b/tests/tcg/hexagon/hvx_misc.c
index 90c3733da07..641cff59aba 100644
--- a/tests/tcg/hexagon/hvx_misc.c
+++ b/tests/tcg/hexagon/hvx_misc.c
@@ -20,6 +20,8 @@
#include <stdbool.h>
#include <string.h>
#include <limits.h>
+#include <hexagon_types.h>
+#include <hvx_hexagon_protos.h>
int err;
@@ -386,6 +388,47 @@ static void test_vsubuwsat_dv(void)
check_output_w(__LINE__, 2);
}
+static void test_vsubwsat(void)
+{
+ const int32_t x0 = INT32_MIN;
+ const int32_t y0 = 1;
+ const int32_t x1 = INT32_MAX;
+ const int32_t y1 = -1;
+ HVX_Vector v0;
+ HVX_Vector v1;
+ HVX_Vector vres;
+
+ /* INT32_MIN - 1 underflows and must saturate to INT32_MIN */
+ memset(expect, 0x12, sizeof(MMVector));
+ memset(output, 0x34, sizeof(MMVector));
+
+ v0 = Q6_V_vsplat_R(x0);
+ v1 = Q6_V_vsplat_R(y0);
+ vres = Q6_Vw_vsub_VwVw_sat(v0, v1);
+ memcpy(&output[0], &vres, sizeof(MMVector));
+
+ for (int j = 0; j < MAX_VEC_SIZE_BYTES / 4; j++) {
+ expect[0].w[j] = INT32_MIN;
+ }
+
+ check_output_w(__LINE__, 1);
+
+ /* INT32_MAX - (-1) overflows and must saturate to INT32_MAX */
+ memset(expect, 0x12, sizeof(MMVector));
+ memset(output, 0x34, sizeof(MMVector));
+
+ v0 = Q6_V_vsplat_R(x1);
+ v1 = Q6_V_vsplat_R(y1);
+ vres = Q6_Vw_vsub_VwVw_sat(v0, v1);
+ memcpy(&output[0], &vres, sizeof(MMVector));
+
+ for (int j = 0; j < MAX_VEC_SIZE_BYTES / 4; j++) {
+ expect[0].w[j] = INT32_MAX;
+ }
+
+ check_output_w(__LINE__, 1);
+}
+
static void test_load_tmp_predicated(void)
{
void *p0 = buffer0;
@@ -530,6 +573,7 @@ int main()
test_vadduwsat();
test_vsubuwsat_dv();
+ test_vsubwsat();
test_load_tmp_predicated();
test_load_cur_predicated();
--
2.34.1
