forked from M-Labs/artiq
transforms.llvm_ir_generator: annotate invariant loads as such.
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b298170973
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@ -176,6 +176,7 @@ class LLVMIRGenerator:
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self.llobject_map = {}
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self.phis = []
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self.debug_info_emitter = DebugInfoEmitter(self.llmodule)
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self.empty_metadata = self.llmodule.add_metadata([])
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def needs_sret(self, lltyp, may_be_large=True):
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if isinstance(lltyp, ll.VoidType):
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@ -628,6 +629,7 @@ class LLVMIRGenerator:
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outer_index = list(env_ty.params.keys()).index("$outer")
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llptr = self.llbuilder.gep(llenv, [self.llindex(0), self.llindex(outer_index)])
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llouterenv = self.llbuilder.load(llptr)
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llouterenv.metadata['invariant.load'] = self.empty_metadata
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return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
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def process_GetLocal(self, insn):
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@ -638,7 +640,9 @@ class LLVMIRGenerator:
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def process_GetConstructor(self, insn):
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env = insn.environment()
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llptr = self.llptr_to_var(self.map(env), env.type, insn.var_name, insn.type)
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return self.llbuilder.load(llptr)
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llconstr = self.llbuilder.load(llptr)
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llconstr.metadata['invariant.load'] = self.empty_metadata
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return llconstr
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def process_SetLocal(self, insn):
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env = insn.environment()
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@ -874,6 +878,7 @@ class LLVMIRGenerator:
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outer_index = list(env_ty.params.keys()).index("$outer")
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llptr = self.llbuilder.gep(llenv, [self.llindex(0), self.llindex(outer_index)])
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llouterenv = self.llbuilder.load(llptr)
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llouterenv.metadata['invariant.load'] = self.empty_metadata
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return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
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else:
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return llenv
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