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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org
Subject: [Qemu-devel] [PATCH 1/2] target/arm: Tidy conditions in handle_vec_simd_shri
Date: Tue,  1 May 2018 11:04:54 -0700	[thread overview]
Message-ID: <20180501180455.11214-2-richard.henderson@linaro.org> (raw)
In-Reply-To: <20180501180455.11214-1-richard.henderson@linaro.org>

The (size > 3 && !is_q) condition is identical to the preceeding test
of bit 3 in immh; eliminate it.  For the benefit of Coverity, assert
that size is within the bounds we expect.

Fixes: Coverity CID1385846
Fixes: Coverity CID1385849
Fixes: Coverity CID1385852
Fixes: Coverity CID1385857
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/translate-a64.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index bff4e13bf6..97950dce1a 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -9019,11 +9019,7 @@ static void handle_vec_simd_shri(DisasContext *s, bool is_q, bool is_u,
         unallocated_encoding(s);
         return;
     }
-
-    if (size > 3 && !is_q) {
-        unallocated_encoding(s);
-        return;
-    }
+    tcg_debug_assert(size <= 3);
 
     if (!fp_access_check(s)) {
         return;
-- 
2.14.3

  reply	other threads:[~2018-05-01 18:05 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-01 18:04 [Qemu-devel] [PATCH 0/2] target/arm: Coverity fixups Richard Henderson
2018-05-01 18:04 ` Richard Henderson [this message]
2018-05-02  9:46   ` [Qemu-devel] [Qemu-arm] [PATCH 1/2] target/arm: Tidy conditions in handle_vec_simd_shri Alex Bennée
2018-05-01 18:04 ` [Qemu-devel] [PATCH 2/2] target/arm: Tidy condition in disas_simd_two_reg_misc Richard Henderson
2018-05-02  9:47   ` [Qemu-devel] [Qemu-arm] " Alex Bennée
2018-05-03 15:05 ` [Qemu-devel] [PATCH 0/2] target/arm: Coverity fixups Peter Maydell

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