On 10/20/24 08:53, Paolo Bonzini wrote:
Just use CC_OP_EFLAGS; it is not that likely that the flags computed by
CC_OP_CLR survive the end of the basic block, in which case there is no
need to spill cc_op_src.
cc_op_src now does need spilling if the XOR is followed by a memory
operation, but this only costs 0.2% extra TCG ops. They will be recouped
by simplifications in how QEMU evaluates ZF at runtime, which are even
greater with this change.
Signed-off-by: Paolo Bonzini<pbonz...@redhat.com>
---
target/i386/cpu.h | 1 -
target/i386/cpu-dump.c | 1 -
target/i386/tcg/cc_helper.c | 3 ---
target/i386/tcg/translate.c | 10 ----------
target/i386/tcg/emit.c.inc | 15 ++++-----------
5 files changed, 4 insertions(+), 26 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
