On 09/22/14 05:16, Alan Lawrence wrote:
Ok thanks Jeff. In that case I think I should draw this to the attention
of the AArch64 maintainers to check the testsuite updates are OK before
I commit...?
Can't hurt.
Methinks it may be possible to get further, or at least increase our
confidence, if I "mock" out try_widen_shift_mode, and/or try injecting
some dubious RTL from a builtin, although this'll only give a momentary
snapshot of behaviour. I may or may not have time to look into this
though ;)...
Yea, it's something I'd pondered as well, though I tend to inject the
RTL I want directly in the debugger. The downside is doing so doesn't
ensure various tables are updated properly, and I vaguely recall a
per-pseudo table for the combiner's nonzero_bits, signbit_copies and
friends.
jeff
