forked from M-Labs/artiq
compiler/transforms/llvm_ir_generator: changed list representation
The representation of TList(T) is changed from `{T*, u32}` to
`{T*, u32}*`. The old representation forbids changing the length of a
list when the list is passed as a parameter into functions, as the
length is passed by value. The representation now matches with nac3.
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@ -253,7 +253,10 @@ class LLVMIRGenerator:
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return ll.LiteralStructType([llbufferty, llshapety])
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elif builtins.is_listish(typ):
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lleltty = self.llty_of_type(builtins.get_iterable_elt(typ))
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return ll.LiteralStructType([lleltty.as_pointer(), lli32])
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lltyp = ll.LiteralStructType([lleltty.as_pointer(), lli32])
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if builtins.is_list(typ):
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lltyp = lltyp.as_pointer()
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return lltyp
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elif builtins.is_range(typ):
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lleltty = self.llty_of_type(builtins.get_iterable_elt(typ))
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return ll.LiteralStructType([lleltty, lleltty, lleltty])
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@ -782,9 +785,20 @@ class LLVMIRGenerator:
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llalloc = self.llbuilder.alloca(lleltty, size=llsize)
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if types._is_pointer(insn.type):
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return llalloc
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llvalue = ll.Constant(self.llty_of_type(insn.type), ll.Undefined)
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llvalue = self.llbuilder.insert_value(llvalue, llalloc, 0, name=insn.name)
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llvalue = self.llbuilder.insert_value(llvalue, llsize, 1)
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if builtins.is_list(insn.type):
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llvalue = self.llbuilder.alloca(self.llty_of_type(insn.type).pointee, size=1)
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self.llbuilder.store(llalloc, self.llbuilder.gep(llvalue,
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[self.llindex(0),
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self.llindex(0)],
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inbounds=True))
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self.llbuilder.store(llsize, self.llbuilder.gep(llvalue,
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[self.llindex(0),
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self.llindex(1)],
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inbounds=True))
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else:
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llvalue = ll.Constant(self.llty_of_type(insn.type), ll.Undefined)
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llvalue = self.llbuilder.insert_value(llvalue, llalloc, 0)
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llvalue = self.llbuilder.insert_value(llvalue, llsize, 1)
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return llvalue
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elif (not builtins.is_allocated(insn.type) or ir.is_keyword(insn.type)
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or builtins.is_array(insn.type)):
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@ -988,9 +1002,15 @@ class LLVMIRGenerator:
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def process_Offset(self, insn):
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base, idx = insn.base(), insn.index()
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llelts, llidx = map(self.map, (base, idx))
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if not types._is_pointer(base.type):
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if builtins.is_listish(base.type):
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# This is list-ish.
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llelts = self.llbuilder.extract_value(llelts, 0)
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if builtins.is_list(base.type):
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llelts = self.llbuilder.load(self.llbuilder.gep(llelts,
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[self.llindex(0),
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self.llindex(0)],
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inbounds=True))
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else:
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llelts = self.llbuilder.extract_value(llelts, 0)
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llelt = self.llbuilder.gep(llelts, [llidx], inbounds=True)
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return llelt
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@ -1004,9 +1024,15 @@ class LLVMIRGenerator:
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def process_SetElem(self, insn):
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base, idx = insn.base(), insn.index()
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llelts, llidx = map(self.map, (base, idx))
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if not types._is_pointer(base.type):
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if builtins.is_listish(base.type):
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# This is list-ish.
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llelts = self.llbuilder.extract_value(llelts, 0)
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if builtins.is_list(base.type):
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llelts = self.llbuilder.load(self.llbuilder.gep(llelts,
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[self.llindex(0),
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self.llindex(0)],
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inbounds=True))
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else:
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llelts = self.llbuilder.extract_value(llelts, 0)
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llelt = self.llbuilder.gep(llelts, [llidx], inbounds=True)
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return self.llbuilder.store(self.map(insn.value()), llelt)
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@ -1152,6 +1178,11 @@ class LLVMIRGenerator:
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lllhs, llrhs = map(self.map, (insn.lhs(), insn.rhs()))
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assert lllhs.type == llrhs.type
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if isinstance(lllhs.type, ll.PointerType) and \
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isinstance(lllhs.type.pointee, ll.LiteralStructType):
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lllhs = self.llbuilder.load(lllhs)
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llrhs = self.llbuilder.load(llrhs)
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if isinstance(lllhs.type, ll.IntType):
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return self.llbuilder.icmp_signed(op, lllhs, llrhs,
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name=insn.name)
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@ -1222,7 +1253,12 @@ class LLVMIRGenerator:
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shape = self.llbuilder.extract_value(self.map(collection),
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self.attr_index(collection.type, "shape"))
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return self.llbuilder.extract_value(shape, 0)
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return self.llbuilder.extract_value(self.map(collection), 1)
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elif builtins.is_list(collection.type):
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return self.llbuilder.load(self.llbuilder.gep(self.map(collection),
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[self.llindex(0),
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self.llindex(1)]))
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else:
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return self.llbuilder.extract_value(self.map(collection), 1)
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elif insn.op in ("printf", "rtio_log"):
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# We only get integers, floats, pointers and strings here.
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lloperands = []
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@ -1677,6 +1713,13 @@ class LLVMIRGenerator:
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assert isinstance(value, (list, numpy.ndarray)), fail_msg
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elt_type = builtins.get_iterable_elt(typ)
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lleltsptr = self._quote_listish_to_llglobal(value, elt_type, path, typ.find().name)
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if builtins.is_list(typ):
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llconst = ll.Constant(llty.pointee, [lleltsptr, ll.Constant(lli32, len(value))])
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name = self.llmodule.scope.deduplicate("quoted.{}".format(typ.find().name))
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llglobal = ll.GlobalVariable(self.llmodule, llconst.type, name)
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llglobal.initializer = llconst
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llglobal.linkage = "private"
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return llglobal
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llconst = ll.Constant(llty, [lleltsptr, ll.Constant(lli32, len(value))])
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return llconst
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elif types.is_tuple(typ):
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