def processCode(self, code, simplify): signatures = self.generateSignatures(code) replace = self.generateReplacements(signatures) if simplify: rewrite.rewriteAndSimplify(self.compiler, self.prgm, code, replace) else: rewrite.rewrite(self.compiler, code, replace) return self.eliminated
def processCode(self, code, simplify):
signatures = self.generateSignatures(code)
replace = self.generateReplacements(signatures)
if simplify:
rewrite.rewriteAndSimplify(self.compiler, self.prgm, code, replace)
else:
rewrite.rewrite(self.compiler, code, replace)
return self.eliminated
def evaluate(compiler, prgm, simplify=False):
with compiler.console.scope('dead store elimination'):
live = set()
stores = collections.defaultdict(list)
# Analysis pass
for code in prgm.liveCode:
live.update(code.annotation.codeReads[0])
for op in codeOps(code):
live.update(op.annotation.reads[0])
if isinstance(op, ast.Store):
stores[code].append(op)
# Transform pass
totalEliminated = 0
for code in prgm.liveCode:
if not code.isStandardCode() or code.annotation.descriptive:
continue
replace = {}
eliminated = 0
# Look for dead stores
for store in stores[code]:
for modify in store.annotation.modifies[0]:
if modify in live: break
if modify.object.leaks: break
else:
replace[store] = []
eliminated += 1
# Rewrite the code without the dead stores
if replace:
compiler.console.output('%r %d' % (code, eliminated))
if simplify:
rewrite.rewriteAndSimplify(compiler, prgm, code, replace)
else:
rewrite.rewrite(compiler, code, replace)
totalEliminated += eliminated
return totalEliminated > 0
def evaluate(compiler, prgm, simplify=False):
with compiler.console.scope('dead store elimination'):
live = set()
stores = collections.defaultdict(list)
# Analysis pass
for code in prgm.liveCode:
live.update(code.annotation.codeReads[0])
for op in codeOps(code):
live.update(op.annotation.reads[0])
if isinstance(op, ast.Store):
stores[code].append(op)
# Transform pass
totalEliminated = 0
for code in prgm.liveCode:
if not code.isStandardCode() or code.annotation.descriptive: continue
replace = {}
eliminated = 0
# Look for dead stores
for store in stores[code]:
for modify in store.annotation.modifies[0]:
if modify in live: break
if modify.object.leaks: break
else:
replace[store] = []
eliminated += 1
# Rewrite the code without the dead stores
if replace:
compiler.console.output('%r %d' % (code, eliminated))
if simplify:
rewrite.rewriteAndSimplify(compiler, prgm, code, replace)
else:
rewrite.rewrite(compiler, code, replace)
totalEliminated += eliminated
return totalEliminated > 0
