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Revision e46b225a

IDe46b225a3137e62c975c49aaae7bb5f9583cc428

Added by Aurelien Jarno about 10 years ago

tcg/optimize: fix known-zero bits for right shift ops

32-bit versions of sar and shr ops should not propagate known-zero bits
from the unused 32 high bits. For sar it could even lead to wrong code
being generated.

Cc:
Reviewed-by: Paolo Bonzini <>
Signed-off-by: Aurelien Jarno <>
Signed-off-by: Richard Henderson <>

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