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Fix bug in pass manager that was making the branch extender too aggressive.

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We need to let the zero-page collapser do as much work as it can before
we get bent out of shape about out-of-range branches.
This commit is contained in:
Michael C. Martin 2012-05-28 22:53:53 -07:00
parent 741390e955
commit 196cb47f05
1 changed files with 3 additions and 2 deletions
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5
src/Ophis/Main.py
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@ -39,7 +39,8 @@ def run_all(infile, outfile):
i = Ophis.Passes.InitLabels()
l_basic = Ophis.Passes.UpdateLabels()
l = Ophis.Passes.FixPoint("label update", [l_basic], lambda: l_basic.changed == 0)
c = Ophis.Passes.Collapse()
c_basic = Ophis.Passes.Collapse()
c = Ophis.Passes.FixPoint("instruction selection 1", [l, c_basic], lambda: c_basic.collapsed == 0)
b = Ophis.Passes.ExtendBranches()
a = Ophis.Passes.Assembler()
@ -48,7 +49,7 @@ def run_all(infile, outfile):
passes.append(Ophis.Passes.FixPoint("macro expansion", [m], lambda: m.changed == 0))
passes.append(Ophis.Passes.FixPoint("label initialization", [i], lambda: i.changed == 0))
passes.extend([Ophis.Passes.CircularityCheck(), Ophis.Passes.CheckExprs(), Ophis.Passes.EasyModes()])
passes.append(Ophis.Passes.FixPoint("instruction selection", [l, c, b], lambda: c.collapsed == 0 and b.expanded == 0))
passes.append(Ophis.Passes.FixPoint("instruction selection 2", [c, b], lambda: b.expanded == 0))
passes.extend([Ophis.Passes.NormalizeModes(), Ophis.Passes.UpdateLabels(), a])
for p in passes: p.go(z, env)