forked from M-Labs/artiq
compiler: do not emit nonstandard !unconditionally* LLVM metadata.
This metadata was added by an LLVM patch that was removed because it was unsound.
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@ -731,7 +731,7 @@ class LLVMIRGenerator:
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llptr = self.llbuilder.gep(llenv, [self.llindex(0), self.llindex(outer_index)],
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inbounds=True)
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llouterenv = self.llbuilder.load(llptr)
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llouterenv.set_metadata('unconditionally.invariant.load', self.empty_metadata)
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llouterenv.set_metadata('invariant.load', self.empty_metadata)
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llouterenv.set_metadata('nonnull', self.empty_metadata)
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return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
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@ -739,7 +739,7 @@ class LLVMIRGenerator:
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assert isinstance(load, ll.LoadInstr) and isinstance(load.type, ll.PointerType)
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pointee_size = load.type.pointee.get_abi_size(self.lldatalayout, context=self.llcontext)
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metadata = self.llmodule.add_metadata([ll.Constant(lli64, pointee_size)])
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load.set_metadata('unconditionally_dereferenceable', metadata)
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load.set_metadata('dereferenceable', metadata)
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def process_GetLocal(self, insn):
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env = insn.environment()
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@ -875,7 +875,7 @@ class LLVMIRGenerator:
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inbounds=True, name="ptr.{}".format(insn.name))
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llvalue = self.llbuilder.load(llptr, name="val.{}".format(insn.name))
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if types.is_instance(typ) and attr in typ.constant_attributes:
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llvalue.set_metadata('unconditionally.invariant.load', self.empty_metadata)
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llvalue.set_metadata('invariant.load', self.empty_metadata)
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if isinstance(llvalue.type, ll.PointerType):
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self.mark_dereferenceable(llvalue)
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return llvalue
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@ -1118,7 +1118,7 @@ class LLVMIRGenerator:
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llptr = self.llbuilder.gep(llenv, [self.llindex(0), self.llindex(outer_index)],
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inbounds=True)
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llouterenv = self.llbuilder.load(llptr)
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llouterenv.set_metadata('unconditionally.invariant.load', self.empty_metadata)
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llouterenv.set_metadata('invariant.load', self.empty_metadata)
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llouterenv.set_metadata('nonnull', self.empty_metadata)
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return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
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else:
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