tree ee8f830177d04ee80dbbe80b2598669ff501887c
parent 1f7f72bdc4faece6af875503a3abe992e87e776b
author Paolo Bonzini <pbonzini@redhat.com> 1718872468 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1730395713 +0100

target/i386: optimize computation of ZF from CC_OP_DYNAMIC

Most uses of CC_OP_DYNAMIC are for CMP/JB/JE or similar sequences.
We can optimize many of them to avoid computation of the flags.
This eliminates both TCG ops to set up the new cc_op, and helper
instructions because evaluating just ZF is much cheaper.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>