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authorJeremy Hylton <jeremy@alum.mit.edu>2000-11-06 03:47:39 (GMT)
committerJeremy Hylton <jeremy@alum.mit.edu>2000-11-06 03:47:39 (GMT)
commiteefaeb78b372f542a70b8b44352852c14549696a (patch)
tree4c03010a9dc4472e2b58992ebc4564315feb755e /Tools
parent314e3fb215c4e96a8c5523061623d8439ab4c2dc (diff)
downloadcpython-eefaeb78b372f542a70b8b44352852c14549696a.zip
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move pruneNext method to correct object (doh!)
Diffstat (limited to 'Tools')
-rw-r--r--Tools/compiler/compiler/pyassem.py48
1 files changed, 24 insertions, 24 deletions
diff --git a/Tools/compiler/compiler/pyassem.py b/Tools/compiler/compiler/pyassem.py
index 0b6701e..9f9e904 100644
--- a/Tools/compiler/compiler/pyassem.py
+++ b/Tools/compiler/compiler/pyassem.py
@@ -120,30 +120,6 @@ class FlowGraph:
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 @@ class 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])