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py2llvm: factorize basic block termination test

This commit is contained in:
Sebastien Bourdeauducq 2014-09-26 23:53:56 +08:00
parent f510d3aa49
commit 89fdab2176
1 changed files with 13 additions and 10 deletions
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23
artiq/py2llvm/ast_body.py
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@ -170,6 +170,9 @@ class Visitor:
if node_type in ("Return", "Break", "Continue"): if node_type in ("Return", "Break", "Continue"):
break break
def _bb_terminated(self):
return is_terminated(self.builder.basic_block)
def _visit_stmt_Assign(self, node): def _visit_stmt_Assign(self, node):
val = self.visit_expression(node.value) val = self.visit_expression(node.value)
for target in node.targets: for target in node.targets:
@ -197,12 +200,12 @@ class Visitor:
self.builder.position_at_end(then_block) self.builder.position_at_end(then_block)
self.visit_statements(node.body) self.visit_statements(node.body)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.branch(merge_block) self.builder.branch(merge_block)
self.builder.position_at_end(else_block) self.builder.position_at_end(else_block)
self.visit_statements(node.orelse) self.visit_statements(node.orelse)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.branch(merge_block) self.builder.branch(merge_block)
self.builder.position_at_end(merge_block) self.builder.position_at_end(merge_block)
@ -228,14 +231,14 @@ class Visitor:
self._enter_loop_body(merge_block) self._enter_loop_body(merge_block)
self.visit_statements(node.body) self.visit_statements(node.body)
self._leave_loop_body() self._leave_loop_body()
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
condition = self.visit_expression(node.test).o_bool(self.builder) condition = self.visit_expression(node.test).o_bool(self.builder)
self.builder.cbranch( self.builder.cbranch(
condition.auto_load(self.builder), body_block, merge_block) condition.auto_load(self.builder), body_block, merge_block)
self.builder.position_at_end(else_block) self.builder.position_at_end(else_block)
self.visit_statements(node.orelse) self.visit_statements(node.orelse)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.branch(merge_block) self.builder.branch(merge_block)
self.builder.position_at_end(merge_block) self.builder.position_at_end(merge_block)
@ -259,14 +262,14 @@ class Visitor:
self._enter_loop_body(merge_block) self._enter_loop_body(merge_block)
self.visit_statements(node.body) self.visit_statements(node.body)
self._leave_loop_body() self._leave_loop_body()
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
cont = it.o_next(self.builder) cont = it.o_next(self.builder)
self.builder.cbranch( self.builder.cbranch(
cont.auto_load(self.builder), body_block, merge_block) cont.auto_load(self.builder), body_block, merge_block)
self.builder.position_at_end(else_block) self.builder.position_at_end(else_block)
self.visit_statements(node.orelse) self.visit_statements(node.orelse)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.branch(merge_block) self.builder.branch(merge_block)
self.builder.position_at_end(merge_block) self.builder.position_at_end(merge_block)
@ -337,7 +340,7 @@ class Visitor:
self.builder.position_at_end(handled_exc_block) self.builder.position_at_end(handled_exc_block)
self.builder.store(lc.Constant.int(lc.Type.int(1), 0), propagate) self.builder.store(lc.Constant.int(lc.Type.int(1), 0), propagate)
self.visit_statements(handler.body) self.visit_statements(handler.body)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.branch(finally_block) self.builder.branch(finally_block)
self.builder.position_at_end(cont_exc_block) self.builder.position_at_end(cont_exc_block)
self.builder.branch(finally_block) self.builder.branch(finally_block)
@ -360,10 +363,10 @@ class Visitor:
self._exception_level_stack[-1] += 1 self._exception_level_stack[-1] += 1
self.visit_statements(node.body) self.visit_statements(node.body)
self._exception_level_stack[-1] -= 1 self._exception_level_stack[-1] -= 1
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.env.build_pop(self.builder, 1) self.env.build_pop(self.builder, 1)
self.visit_statements(node.orelse) self.visit_statements(node.orelse)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.branch(finally_block) self.builder.branch(finally_block)
self.builder.position_at_end(exc_block) self.builder.position_at_end(exc_block)
self._handle_exception(function, finally_block, self._handle_exception(function, finally_block,
@ -373,7 +376,7 @@ class Visitor:
merge_block = function.append_basic_block("try_merge") merge_block = function.append_basic_block("try_merge")
self.builder.position_at_end(finally_block) self.builder.position_at_end(finally_block)
self.visit_statements(node.finalbody) self.visit_statements(node.finalbody)
if not is_terminated(self.builder.basic_block): if not self._bb_terminated():
self.builder.cbranch( self.builder.cbranch(
self.builder.load(propagate), self.builder.load(propagate),
propagate_block, merge_block) propagate_block, merge_block)