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[Qemu-devel] [PATCH 2/2] target/arm: Tidy condition in disas_simd_two_re


From: Richard Henderson
Subject: [Qemu-devel] [PATCH 2/2] target/arm: Tidy condition in disas_simd_two_reg_misc
Date: Tue, 1 May 2018 11:04:55 -0700

Path analysis shows that size == 3 && !is_q has been eliminated.

Fixes: Coverity CID1385853
Signed-off-by: Richard Henderson <address@hidden>
---
 target/arm/translate-a64.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 97950dce1a..6d49f30b4a 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -11473,7 +11473,11 @@ static void disas_simd_two_reg_misc(DisasContext *s, 
uint32_t insn)
         /* All 64-bit element operations can be shared with scalar 2misc */
         int pass;
 
-        for (pass = 0; pass < (is_q ? 2 : 1); pass++) {
+        /* Coverity claims (size == 3 && !is_q) has been eliminated
+         * from all paths leading to here.
+         */
+        tcg_debug_assert(is_q);
+        for (pass = 0; pass < 2; pass++) {
             TCGv_i64 tcg_op = tcg_temp_new_i64();
             TCGv_i64 tcg_res = tcg_temp_new_i64();
 
-- 
2.14.3




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