target/sparc: Remove CC_OP_DIV

Return both result and overflow from helper_[us]div.
Compute all flags explicitly in gen_op_[us]divcc.

Marginally improve the INT64_MIN special case in helper_sdiv.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
5 files changed