diff mbox series

[Stable-8.2.8,03/49] tcg: Fix iteration step in 32-bit gvec operation

Message ID 20241109101443.312701-3-mjt@tls.msk.ru (mailing list archive)
State New
Headers show
Series Patch Round-up for stable 8.2.8, freeze on 2024-11-18 | expand

Commit Message

Michael Tokarev Nov. 9, 2024, 10:13 a.m. UTC 
From: TANG Tiancheng <tangtiancheng.ttc@alibaba-inc.com>

The loop in the 32-bit case of the vector compare operation
was incorrectly incrementing by 8 bytes per iteration instead
of 4 bytes. This caused the function to process only half of
the intended elements.

Cc: qemu-stable@nongnu.org
Fixes: 9622c697d1 (tcg: Add gvec compare with immediate and scalar operand)
Signed-off-by: TANG Tiancheng <tangtiancheng.ttc@alibaba-inc.com>
Reviewed-by: Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240904142739.854-2-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 9d8d5a5b9078a16b4c0862fe54248c5cc8435648)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff mbox series

Patch

diff --git a/tcg/tcg-op-gvec.c b/tcg/tcg-op-gvec.c
index bb88943f79..566fd6eef7 100644
--- a/tcg/tcg-op-gvec.c
+++ b/tcg/tcg-op-gvec.c
@@ -3925,7 +3925,7 @@  void tcg_gen_gvec_cmps(TCGCond cond, unsigned vece, uint32_t dofs,
         uint32_t i;
 
         tcg_gen_extrl_i64_i32(t1, c);
-        for (i = 0; i < oprsz; i += 8) {
+        for (i = 0; i < oprsz; i += 4) {
             tcg_gen_ld_i32(t0, tcg_env, aofs + i);
             tcg_gen_negsetcond_i32(cond, t0, t0, t1);
             tcg_gen_st_i32(t0, tcg_env, dofs + i);