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llvm_ir_generator: mark loads as non-null where applicable.

This commit is contained in:
whitequark 2016-03-29 13:03:15 +00:00
parent 330b232672
commit 586022023b
1 changed files with 16 additions and 6 deletions
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22
artiq/compiler/transforms/llvm_ir_generator.py
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@ -685,13 +685,17 @@ class LLVMIRGenerator:
inbounds=True)
llouterenv = self.llbuilder.load(llptr)
llouterenv.metadata['invariant.load'] = self.empty_metadata
llouterenv.metadata['nonnull'] = self.empty_metadata
return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
def process_GetLocal(self, insn):
env = insn.environment()
llptr = self.llptr_to_var(self.map(env), env.type, insn.var_name)
llptr.name = "ptr.{}.{}".format(env.name, insn.var_name)
return self.llbuilder.load(llptr, name="val.{}.{}".format(env.name, insn.var_name))
llvalue = self.llbuilder.load(llptr, name="val.{}.{}".format(env.name, insn.var_name))
if isinstance(llvalue.type, ll.PointerType):
llvalue.metadata['nonnull'] = self.empty_metadata
return llvalue
def process_SetLocal(self, insn):
env = insn.environment()
@ -810,10 +814,12 @@ class LLVMIRGenerator:
else:
llptr = self.llbuilder.gep(obj, [self.llindex(0), self.llindex(index)],
inbounds=True, name="ptr.{}".format(insn.name))
llval = self.llbuilder.load(llptr, name="val.{}".format(insn.name))
if types.is_instance(typ) and attr not in typ.constant_attributes:
llval.metadata['invariant.load'] = self.empty_metadata
return llval
llvalue = self.llbuilder.load(llptr, name="val.{}".format(insn.name))
if types.is_instance(typ) and attr in typ.constant_attributes:
llvalue.metadata['invariant.load'] = self.empty_metadata
if isinstance(llvalue.type, ll.PointerType):
llvalue.metadata['nonnull'] = self.empty_metadata
return llvalue
def process_SetAttr(self, insn):
typ, attr = insn.object().type, insn.attr
@ -841,7 +847,10 @@ class LLVMIRGenerator:
llelts = self.llbuilder.extract_value(self.map(insn.list()), 1)
llelt = self.llbuilder.gep(llelts, [self.map(insn.index())],
inbounds=True)
return self.llbuilder.load(llelt)
llvalue = self.llbuilder.load(llelt)
if isinstance(llvalue.type, ll.PointerType):
llvalue.metadata['nonnull'] = self.empty_metadata
return llvalue
def process_SetElem(self, insn):
llelts = self.llbuilder.extract_value(self.map(insn.list()), 1)
@ -1052,6 +1061,7 @@ class LLVMIRGenerator:
inbounds=True)
llouterenv = self.llbuilder.load(llptr)
llouterenv.metadata['invariant.load'] = self.empty_metadata
llouterenv.metadata['nonnull'] = self.empty_metadata
return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
else:
return llenv