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author | Magnus Lång <[email protected]> | 2017-03-16 15:30:00 +0100 |
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committer | Magnus Lång <[email protected]> | 2017-03-16 20:49:42 +0100 |
commit | c52b2cf226cb3f1bb1b16bee28d47785506adff3 (patch) | |
tree | f016829f93e26db7fe7e2329ace868f4b2442510 /lib/hipe/regalloc/hipe_moves.erl | |
parent | d1d26f4bf9da3cc5eab4e918df771d67fe9e6bb5 (diff) | |
download | otp-c52b2cf226cb3f1bb1b16bee28d47785506adff3.tar.gz otp-c52b2cf226cb3f1bb1b16bee28d47785506adff3.tar.bz2 otp-c52b2cf226cb3f1bb1b16bee28d47785506adff3.zip |
hipe: Add pseudo_spill_f?move instructions
These pseudo instructions are added to all backends and allow spill slot
to spill slot move coalescing in a clean way.
They have regular move semantics, but contain an additional scratch
register to be used if both source and destination are spilled, and can
not be move coalesced.
Additionally, a register allocator callback
Target:is_spill_move(Instr, Context) is added which allows the spill
slot allocators to check for these instructions and try to coalesce the
spill slots the two temporaries are allocated to.
Diffstat (limited to 'lib/hipe/regalloc/hipe_moves.erl')
0 files changed, 0 insertions, 0 deletions