On 9/13/24 03:23, Alex Bennée wrote:
Richard Henderson writes:
On 9/10/24 14:23, Richard Henderson wrote:
With tcg_last_op(), we always get the last op of the stream.
With TCGContext.emit_before_op, the most recently emitted op
is no longer the last op.
Instead, pass the op being emitted back
On 9/13/24 03:23, Alex Bennée wrote:
Note that the branch is X < 0 (unsigned), which is always false, and
thus the branch is optimized away.
I'm obviously missing something reading this. How can TCG know the state
of the scoreboard variables and optimise away the branch?
0 < 0 is of course fa
Richard Henderson writes:
> On 9/10/24 14:23, Richard Henderson wrote:
>> With tcg_last_op(), we always get the last op of the stream.
>> With TCGContext.emit_before_op, the most recently emitted op
>> is no longer the last op.
>> Instead, pass the op being emitted back from the allocator so
>> t
On 9/10/24 14:23, Richard Henderson wrote:
With tcg_last_op(), we always get the last op of the stream.
With TCGContext.emit_before_op, the most recently emitted op
is no longer the last op.
Instead, pass the op being emitted back from the allocator so
that we can link it to the label without ne
With tcg_last_op(), we always get the last op of the stream.
With TCGContext.emit_before_op, the most recently emitted op
is no longer the last op.
Instead, pass the op being emitted back from the allocator so
that we can link it to the label without needing to look it up.
r~
Richard Henderson
