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Add support for emergency spill slots.

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- Create a new kind of stack slot: emergency_slot.
- Add a get_emergency_slot() method which finds a suitable emergency
  slot given a list of slots already in use.
- Use emergency spill slots when schedule_moves needs them.
This commit is contained in:
Jakob Stoklund Olesen
2017-10-06 09:11:51 -07:00
parent d0b4c76262
commit b3fa47cacc
7 changed files with 154 additions and 10 deletions
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2
misc/vim/syntax/cton.vim
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@@ -14,7 +14,7 @@ endif
syn spell notoplevel
syn keyword ctonHeader test isa set
syn keyword ctonDecl function jump_table incoming_arg outgoing_arg spill_slot local
syn keyword ctonDecl function jump_table incoming_arg outgoing_arg spill_slot local emergency_slot
syn keyword ctonFilecheck check sameln nextln unordered not regex contained
syn match ctonType /\<[bif]\d\+\(x\d\+\)\?\>/