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transforms.llvm_ir_generator: annotate invariant loads as such.

This commit is contained in:
whitequark 2016-01-10 15:45:34 +00:00
parent b298170973
commit c46fccdf4b
1 changed files with 6 additions and 1 deletions
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7
artiq/compiler/transforms/llvm_ir_generator.py
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@ -176,6 +176,7 @@ class LLVMIRGenerator:
self.llobject_map = {}
self.phis = []
self.debug_info_emitter = DebugInfoEmitter(self.llmodule)
self.empty_metadata = self.llmodule.add_metadata([])
def needs_sret(self, lltyp, may_be_large=True):
if isinstance(lltyp, ll.VoidType):
@ -628,6 +629,7 @@ class LLVMIRGenerator:
outer_index = list(env_ty.params.keys()).index("$outer")
llptr = self.llbuilder.gep(llenv, [self.llindex(0), self.llindex(outer_index)])
llouterenv = self.llbuilder.load(llptr)
llouterenv.metadata['invariant.load'] = self.empty_metadata
return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
def process_GetLocal(self, insn):
@ -638,7 +640,9 @@ class LLVMIRGenerator:
def process_GetConstructor(self, insn):
env = insn.environment()
llptr = self.llptr_to_var(self.map(env), env.type, insn.var_name, insn.type)
return self.llbuilder.load(llptr)
llconstr = self.llbuilder.load(llptr)
llconstr.metadata['invariant.load'] = self.empty_metadata
return llconstr
def process_SetLocal(self, insn):
env = insn.environment()
@ -874,6 +878,7 @@ class LLVMIRGenerator:
outer_index = list(env_ty.params.keys()).index("$outer")
llptr = self.llbuilder.gep(llenv, [self.llindex(0), self.llindex(outer_index)])
llouterenv = self.llbuilder.load(llptr)
llouterenv.metadata['invariant.load'] = self.empty_metadata
return self.llptr_to_var(llouterenv, env_ty.params["$outer"], var_name)
else:
return llenv