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More work on iseqs #218

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Merged
merged 12 commits into from
Nov 29, 2022
Merged

More work on iseqs #218

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5dcd672
Use label objects instead of symbols
kddnewton Nov 23, 2022
633ab9b
Start using labels for jumps
kddnewton Nov 23, 2022
f87fc56
Create a linked list for nodes
kddnewton Nov 26, 2022
2115177
Fix opt table to use labels
kddnewton Nov 26, 2022
69d2dfa
Specialize in a separate pass
kddnewton Nov 26, 2022
80de9c9
Specialize using the linked list
kddnewton Nov 26, 2022
f3ed30d
Have the instruction list point to values not necessarily instructions
kddnewton Nov 26, 2022
b422b42
Give a reference on the labels to their container nodes
kddnewton Nov 26, 2022
14df44e
Begin peephole optimizations
kddnewton Nov 26, 2022
b998a6e
Add a bit of execution
kddnewton Nov 28, 2022
7006456
Add an entire compile! step
kddnewton Nov 29, 2022
46ab829
Allow calling disasm on instructions
kddnewton Nov 29, 2022
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Start using labels for jumps
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@kddnewton
kddnewton committed Nov 25, 2022
commit 633ab9bea7f542b098c975296e7e6044faefdb51
12 changes: 7 additions & 5 deletions lib/syntax_tree/yarv/bf.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -153,23 +153,25 @@ def input_char(iseq)

# unless $tape[$cursor] == 0
def loop_start(iseq)
start_label = iseq.label_at_index
start_label = iseq.label
end_label = iseq.label

iseq.push(start_label)
iseq.getglobal(:$tape)
iseq.getglobal(:$cursor)
iseq.send(YARV.calldata(:[], 1))

iseq.putobject(0)
iseq.send(YARV.calldata(:==, 1))
iseq.branchunless(end_label)

branchunless = iseq.branchunless(-1)
[start_label, branchunless]
[start_label, end_label]
end

# Jump back to the start of the loop.
def loop_end(iseq, start_label, branchunless)
def loop_end(iseq, start_label, end_label)
iseq.jump(start_label)
branchunless.patch!(iseq)
iseq.push(end_label)
end
end
end
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