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Re: trans-mem: virtual ops for gimple_transaction


On 02/10/2012 01:44 AM, Richard Guenther wrote:
> What is the reason to keep a GIMPLE_TRANSACTION stmt after
> TM lowering and not lower it to a builtin function call?

Because "real" optimization hasn't happened yet, and we hold
out hope that we'll be able to delete stuff as unreachable.
Especially all instances of transaction_cancel.

> It seems the body is empty after lowering (what's the label thing?)

The label is the transaction cancel label.

When we finally convert GIMPLE_TRANSACTION a builtin, we'll
generate different code layouts with and without a cancel.


r~


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