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| author | Magnus Lång <[email protected]> | 2017-03-16 15:30:00 +0100 |
|---|---|---|
| committer | Magnus Lång <[email protected]> | 2017-03-16 20:49:42 +0100 |
| commit | c52b2cf226cb3f1bb1b16bee28d47785506adff3 (patch) | |
| tree | f016829f93e26db7fe7e2329ace868f4b2442510 /lib/hipe/arm/hipe_arm.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/arm/hipe_arm.erl')
| -rw-r--r-- | lib/hipe/arm/hipe_arm.erl | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/hipe/arm/hipe_arm.erl b/lib/hipe/arm/hipe_arm.erl index e34a00f561..3b090b501a 100644 --- a/lib/hipe/arm/hipe_arm.erl +++ b/lib/hipe/arm/hipe_arm.erl @@ -79,6 +79,9 @@ pseudo_move_dst/1, pseudo_move_src/1, + mk_pseudo_spill_move/3, + is_pseudo_spill_move/1, + mk_pseudo_switch/3, mk_pseudo_tailcall/4, @@ -250,6 +253,10 @@ is_pseudo_move(I) -> case I of #pseudo_move{} -> true; _ -> false end. pseudo_move_dst(#pseudo_move{dst=Dst}) -> Dst. pseudo_move_src(#pseudo_move{src=Src}) -> Src. +mk_pseudo_spill_move(Dst, Temp, Src) -> + #pseudo_spill_move{dst=Dst, temp=Temp, src=Src}. +is_pseudo_spill_move(I) -> is_record(I, pseudo_spill_move). + mk_pseudo_switch(JTab, Index, Labels) -> #pseudo_switch{jtab=JTab, index=Index, labels=Labels}. |