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[v3,11/11] target/s390x: Fix writeback to v1 in helper_vstl

Message ID 20220308015358.188499-12-richard.henderson@linaro.org
State Superseded
Headers show
Series s390x/tcg: Implement Vector-Enhancements Facility 2 | expand

Commit Message

Richard Henderson March 8, 2022, 1:53 a.m. UTC 
Copy-paste error from vector load length -- do not write
zeros back to v1 after storing from v1.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/s390x/tcg/vec_helper.c | 2 --
 1 file changed, 2 deletions(-)

Comments

David Hildenbrand March 21, 2022, 11:26 a.m. UTC | #1 
On 08.03.22 02:53, Richard Henderson wrote:
> Copy-paste error from vector load length -- do not write
> zeros back to v1 after storing from v1.

Fixes: 0e0a5b49ad58 ("s390x/tcg: Implement VECTOR STORE WITH LENGTH")
Reviewed-by: David Hildenbrand <david@redhat.com>

> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  target/s390x/tcg/vec_helper.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/target/s390x/tcg/vec_helper.c b/target/s390x/tcg/vec_helper.c
> index ededf13cf0..48d86722b2 100644
> --- a/target/s390x/tcg/vec_helper.c
> +++ b/target/s390x/tcg/vec_helper.c
> @@ -200,7 +200,6 @@ void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
>          addr = wrap_address(env, addr + 8);
>          cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 1), GETPC());
>      } else {
> -        S390Vector tmp = {};
>          int i;
>  
>          for (i = 0; i < bytes; i++) {
> @@ -209,6 +208,5 @@ void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
>              cpu_stb_data_ra(env, addr, byte, GETPC());
>              addr = wrap_address(env, addr + 1);
>          }
> -        *(S390Vector *)v1 = tmp;
>      }
>  }
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Patch

diff --git a/target/s390x/tcg/vec_helper.c b/target/s390x/tcg/vec_helper.c
index ededf13cf0..48d86722b2 100644
--- a/target/s390x/tcg/vec_helper.c
+++ b/target/s390x/tcg/vec_helper.c
@@ -200,7 +200,6 @@  void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
         addr = wrap_address(env, addr + 8);
         cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 1), GETPC());
     } else {
-        S390Vector tmp = {};
         int i;
 
         for (i = 0; i < bytes; i++) {
@@ -209,6 +208,5 @@  void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
             cpu_stb_data_ra(env, addr, byte, GETPC());
             addr = wrap_address(env, addr + 1);
         }
-        *(S390Vector *)v1 = tmp;
     }
 }