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[Qemu-devel] [PATCH 07/10] target-i386: SSE4.2: fix pcmpXstrX instructio


From: Aurelien Jarno
Subject: [Qemu-devel] [PATCH 07/10] target-i386: SSE4.2: fix pcmpXstrX instructions in "Equal ordered" mode
Date: Tue, 26 Mar 2013 20:01:39 +0100

The inner loop should only change the current bit of the result, instead
of the whole result.

Signed-off-by: Aurelien Jarno <address@hidden>
---
 target-i386/ops_sse.h |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/target-i386/ops_sse.h b/target-i386/ops_sse.h
index 2fc5fdd..77ab410 100644
--- a/target-i386/ops_sse.h
+++ b/target-i386/ops_sse.h
@@ -2036,10 +2036,11 @@ static inline unsigned pcmpxstrx(CPUX86State *env, Reg 
*d, Reg *s,
     case 3:
         for (j = valids - validd; j >= 0; j--) {
             res <<= 1;
-            res |= 1;
+            v = 1;
             for (i = MIN(upper - j, validd); i >= 0; i--) {
-                res &= (pcmp_val(s, ctrl, i + j) == pcmp_val(d, ctrl, i));
+                v &= (pcmp_val(s, ctrl, i + j) == pcmp_val(d, ctrl, i));
             }
+            res |= v;
         }
         break;
     }
-- 
1.7.10.4




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