target/riscv: fix return value of do_opivx_widen()
do_opivx_widen() should return false if check function returns false. Signed-off-by: NFrank Chang <frank.chang@sifive.com> Reviewed-by: NRichard Henderson <richard.henderson@linaro.org> Message-Id: <20200710104920.13550-4-frank.chang@sifive.com> Signed-off-by: NAlistair Francis <alistair.francis@wdc.com>
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