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target-i386: SSE4.2: fix pcmpXstrX instructions in "Equal each" mode 

pcmpXstrX instructions in "Equal each" mode force both invalid element
pair to true. It means (upper - MAX(valids, validd)) bits should be set
to 1, not (upper - MAX(valids, validd) + 1).

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2013-03-26 19:56:01 +01:00
parent 649ad05ed4
commit b27a6cacb7
1 changed files with 1 additions and 1 deletions
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2
target-i386/ops_sse.h
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@ -2025,7 +2025,7 @@ static inline unsigned pcmpxstrx(CPUX86State *env, Reg *d, Reg *s,
}
break;
case 2:
res = (2 << (upper - MAX(valids, validd))) - 1;
res = (1 << (upper - MAX(valids, validd))) - 1;
res <<= MAX(valids, validd) - MIN(valids, validd);
for (i = MIN(valids, validd); i >= 0; i--) {
res <<= 1;