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ir: fix incoming_{blocks,values,value_for_block}.
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@ -242,13 +242,13 @@ class Phi(Instruction):
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return
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def incoming_blocks(self):
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return (block for (block, value) in self.incoming())
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return (block for (value, block) in self.incoming())
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def incoming_values(self):
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return (value for (block, value) in self.incoming())
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return (value for (value, block) in self.incoming())
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def incoming_value_for_block(self, target_block):
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for (block, value) in self.incoming():
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for (value, block) in self.incoming():
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if block == target_block:
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return value
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assert False
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@ -262,12 +262,14 @@ class Phi(Instruction):
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def remove_incoming_value(self, value):
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index = self.operands.index(value)
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assert index % 2 == 0
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self.operands[index].uses.remove(self)
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self.operands[index + 1].uses.remove(self)
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del self.operands[index:index + 2]
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def remove_incoming_block(self, block):
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index = self.operands.index(block)
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assert index % 2 == 1
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self.operands[index - 1].uses.remove(self)
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self.operands[index].uses.remove(self)
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del self.operands[index - 1:index + 1]
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