[PATCH 3/4] target/arm: Fixup SIMD fcmla(by element) in 4H arrangement

[LIU Zhiwei]

For SIMD fcmla(by element), if the number of elements is less than
the number of elements within one segment，i.e. 4H arrangement,
we should not calculate the entire segment.

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
---
 target/arm/vec_helper.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c
index 7174030377..44b8165323 100644
--- a/target/arm/vec_helper.c
+++ b/target/arm/vec_helper.c
@@ -544,6 +544,10 @@ void HELPER(gvec_fcmlah_idx)(void *vd, void *vn, void *vm,
     neg_real <<= 15;
     neg_imag <<= 15;
 
+    /* Adjust eltspersegment for simd 4H */
+    if (eltspersegment > elements) {
+        eltspersegment = elements;
+    }
     for (i = 0; i < elements; i += eltspersegment) {
         float16 mr = m[H2(i + 2 * index + 0)];
         float16 mi = m[H2(i + 2 * index + 1)];
@@ -610,6 +614,10 @@ void HELPER(gvec_fcmlas_idx)(void *vd, void *vn, void *vm,
     neg_real <<= 31;
     neg_imag <<= 31;
 
+    /* Adjust eltspersegment for simd 4H */
+    if (eltspersegment > elements) {
+        eltspersegment = elements;
+    }
     for (i = 0; i < elements; i += eltspersegment) {
         float32 mr = m[H4(i + 2 * index + 0)];
         float32 mi = m[H4(i + 2 * index + 1)];
-- 
2.23.0