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authorMagnus Lång <[email protected]>2017-03-16 15:30:00 +0100
committerMagnus Lång <[email protected]>2017-03-16 20:49:42 +0100
commitc52b2cf226cb3f1bb1b16bee28d47785506adff3 (patch)
treef016829f93e26db7fe7e2329ace868f4b2442510 /lib/.gitignore
parentd1d26f4bf9da3cc5eab4e918df771d67fe9e6bb5 (diff)
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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.
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