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move pruneNext method to correct object (doh!)

This commit is contained in:
Jeremy Hylton 2000-11-06 03:47:39 +00:00
parent 314e3fb215
commit eefaeb78b3
2 changed files with 48 additions and 48 deletions
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48
Lib/compiler/pyassem.py
View File

@ -120,30 +120,6 @@ def getContainedGraphs(self):
l.extend(b.getContainedGraphs())
return l
_uncond_transfer = ('RETURN_VALUE', 'RAISE_VARARGS',
'JUMP_ABSOLUTE', 'JUMP_FORWARD')
def pruneNext(self):
"""Remove bogus edge for unconditional transfers
Each block has a next edge that accounts for implicit control
transfers, e.g. from a JUMP_IF_FALSE to the block that will be
executed if the test is true.
These edges must remain for the current assembler code to
work. If they are removed, the dfs_postorder gets things in
weird orders. However, they shouldn't be there for other
purposes, e.g. conversion to SSA form. This method will
remove the next edge when it follows an unconditional control
transfer.
"""
try:
op, arg = self.insts[-1]
except (IndexError, TypeError):
return
if op in self._uncond_transfer:
self.next = []
def dfs_postorder(b, seen):
"""Depth-first search of tree rooted at b, return in postorder"""
order = []
@ -197,6 +173,30 @@ def addNext(self, block):
self.next.append(block)
assert len(self.next) == 1, map(str, self.next)
_uncond_transfer = ('RETURN_VALUE', 'RAISE_VARARGS',
'JUMP_ABSOLUTE', 'JUMP_FORWARD')
def pruneNext(self):
"""Remove bogus edge for unconditional transfers
Each block has a next edge that accounts for implicit control
transfers, e.g. from a JUMP_IF_FALSE to the block that will be
executed if the test is true.
These edges must remain for the current assembler code to
work. If they are removed, the dfs_postorder gets things in
weird orders. However, they shouldn't be there for other
purposes, e.g. conversion to SSA form. This method will
remove the next edge when it follows an unconditional control
transfer.
"""
try:
op, arg = self.insts[-1]
except (IndexError, ValueError):
return
if op in self._uncond_transfer:
self.next = []
def get_children(self):
if self.next and self.next[0] in self.outEdges:
self.outEdges.remove(self.next[0])

48
Tools/compiler/compiler/pyassem.py
View File

@ -120,30 +120,6 @@ def getContainedGraphs(self):
l.extend(b.getContainedGraphs())
return l
_uncond_transfer = ('RETURN_VALUE', 'RAISE_VARARGS',
'JUMP_ABSOLUTE', 'JUMP_FORWARD')
def pruneNext(self):
"""Remove bogus edge for unconditional transfers
Each block has a next edge that accounts for implicit control
transfers, e.g. from a JUMP_IF_FALSE to the block that will be
executed if the test is true.
These edges must remain for the current assembler code to
work. If they are removed, the dfs_postorder gets things in
weird orders. However, they shouldn't be there for other
purposes, e.g. conversion to SSA form. This method will
remove the next edge when it follows an unconditional control
transfer.
"""
try:
op, arg = self.insts[-1]
except (IndexError, TypeError):
return
if op in self._uncond_transfer:
self.next = []
def dfs_postorder(b, seen):
"""Depth-first search of tree rooted at b, return in postorder"""
order = []
@ -197,6 +173,30 @@ def addNext(self, block):
self.next.append(block)
assert len(self.next) == 1, map(str, self.next)
_uncond_transfer = ('RETURN_VALUE', 'RAISE_VARARGS',
'JUMP_ABSOLUTE', 'JUMP_FORWARD')
def pruneNext(self):
"""Remove bogus edge for unconditional transfers
Each block has a next edge that accounts for implicit control
transfers, e.g. from a JUMP_IF_FALSE to the block that will be
executed if the test is true.
These edges must remain for the current assembler code to
work. If they are removed, the dfs_postorder gets things in
weird orders. However, they shouldn't be there for other
purposes, e.g. conversion to SSA form. This method will
remove the next edge when it follows an unconditional control
transfer.
"""
try:
op, arg = self.insts[-1]
except (IndexError, ValueError):
return
if op in self._uncond_transfer:
self.next = []
def get_children(self):
if self.next and self.next[0] in self.outEdges:
self.outEdges.remove(self.next[0])