tcg: add negsetcondi

This can be useful to write a shift bit extraction that does not
depend on TARGET_LONG_BITS.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20231019104648.389942-15-pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
3 files changed