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@ -3997,7 +3997,7 @@ subst (x, from, to, in_dest, unique_copy)
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means that we only care about the low bits of the result.
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However, on most machines (those with neither BYTE_LOADS_ZERO_EXTEND
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nor BYTES_LOADS_SIGN_EXTEND defined), we cannot perform a
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nor BYTE_LOADS_SIGN_EXTEND defined), we cannot perform a
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narrower operation that requested since the high-order bits will
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be undefined. On machine where BYTE_LOADS_*_EXTEND is defined,
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however, this transformation is safe as long as M1 and M2 have
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