[qemu-xen stable-4.14] target/arm: Clear tail in gvec_fmul_idx_*, gvec_fmla_idx_*

[patchbot@xxxxxxx]

commit 352259fef83f689b8a8c436a24093e6ede167288
Author:     Richard Henderson <richard.henderson@xxxxxxxxxx>
AuthorDate: Wed May 13 09:32:43 2020 -0700
Commit:     Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CommitDate: Mon Aug 24 18:55:37 2020 -0500

    target/arm: Clear tail in gvec_fmul_idx_*, gvec_fmla_idx_*
    
    Must clear the tail for AdvSIMD when SVE is enabled.
    
    Fixes: ca40a6e6e39
    Cc: qemu-stable@xxxxxxxxxx
    Reviewed-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
    Signed-off-by: Richard Henderson <richard.henderson@xxxxxxxxxx>
    Message-id: 20200513163245.17915-15-richard.henderson@xxxxxxxxxx
    Signed-off-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
    (cherry picked from commit 525d9b6d42844e187211d25b69be8b378785bc24)
    Signed-off-by: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
---
 target/arm/vec_helper.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c
index 8017bd88c4..5ce111b286 100644
--- a/target/arm/vec_helper.c
+++ b/target/arm/vec_helper.c
@@ -737,6 +737,7 @@ void HELPER(NAME)(void *vd, void *vn, void *vm, void *stat, 
uint32_t desc) \
             d[i + j] = TYPE##_mul(n[i + j], mm, stat);                     \
         }                                                                  \
     }                                                                      \
+    clear_tail(d, oprsz, simd_maxsz(desc));                                \
 }
 
 DO_MUL_IDX(gvec_fmul_idx_h, float16, H2)
@@ -761,6 +762,7 @@ void HELPER(NAME)(void *vd, void *vn, void *vm, void *va,   
               \
                                      mm, a[i + j], 0, stat);               \
         }                                                                  \
     }                                                                      \
+    clear_tail(d, oprsz, simd_maxsz(desc));                                \
 }
 
 DO_FMLA_IDX(gvec_fmla_idx_h, float16, H2)
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#stable-4.14