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Commit e4e9bcba authored by dbarbera's avatar dbarbera
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Fixed substring generation for fixed size types

parent a99ff7ea
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LlvmGenerator.py
View file @ e4e9bcba
......@@ -669,19 +669,22 @@ def generate_for_iterable(loop, ctx):
idx_ptr = ctx.builder.alloca(ctx.i32)
ctx.builder.store(core.Constant.int(ctx.i32, 0), idx_ptr)
seqof_struct_ptr = expression(loop['list'], ctx)
seqof_val = expression(loop['list'], ctx)
if is_variable_size:
# In variable size SequenceOfs the array values are in the second field
array_ptr = ctx.builder.gep(seqof_struct_ptr, [ctx.zero, ctx.one])
if isinstance(seqof_val, SDLSubstringValue):
array_ptr = seqof_val.arr_ptr
elif is_variable_size:
array_ptr = ctx.builder.gep(seqof_val, [ctx.zero, ctx.one])
else:
array_ptr = ctx.builder.gep(seqof_struct_ptr, [ctx.zero, ctx.zero])
array_ptr = ctx.builder.gep(seqof_val, [ctx.zero, ctx.zero])
elem_llty = array_ptr.type.pointee.element
if is_variable_size:
if isinstance(seqof_val, SDLSubstringValue):
end_idx = seqof_val.count_val
elif is_variable_size:
# load the current number of elements that is on the first field
end_idx = ctx.builder.load(ctx.builder.gep(seqof_struct_ptr, [ctx.zero, ctx.zero]))
end_idx = ctx.builder.load(ctx.builder.gep(seqof_val, [ctx.zero, ctx.zero]))
else:
end_idx = core.Constant.int(ctx.i32, array_ptr.type.pointee.count)
......@@ -751,18 +754,43 @@ def _prim_selector_reference(prim, ctx):
@reference.register(ogAST.PrimIndex)
def _prim_index_reference(prim, ctx):
''' Generate the IR for an index reference '''
receiver_ptr = reference(prim.value[0], ctx)
receiver_val = reference(prim.value[0], ctx)
idx_val = expression(prim.value[1]['index'][0], ctx)
array_ptr = ctx.builder.gep(receiver_ptr, [ctx.zero, ctx.zero])
basic_asn1ty = ctx.basic_asn1type_of(prim.value[0].exprType)
# TODO: Refactor this
if array_ptr.type.pointee.kind != core.TYPE_ARRAY:
# If is not an array this is a pointer to a variable size SeqOf
# The array is in the second field of the struct
return ctx.builder.gep(receiver_ptr, [ctx.zero, ctx.one, idx_val])
if isinstance(receiver_val, SDLSubstringValue):
return ctx.builder.gep(receiver_val.arr_ptr, [ctx.zero, idx_val])
elif basic_asn1ty.Min == basic_asn1ty.Max:
return ctx.builder.gep(receiver_val, [ctx.zero, ctx.zero, idx_val])
else:
return ctx.builder.gep(receiver_ptr, [ctx.zero, ctx.zero, idx_val])
return ctx.builder.gep(receiver_val, [ctx.zero, ctx.one, idx_val])
@reference.register(ogAST.PrimSubstring)
def _prim_substring_reference(prim, ctx):
''' Generate hte IR for a substring reference '''
asn1ty = prim.exprType
basic_asn1ty = ctx.basic_asn1type_of(asn1ty)
seqof_val = expression(prim.value[0], ctx)
low_val = expression(prim.value[1]['substring'][0], ctx)
high_val = expression(prim.value[1]['substring'][1], ctx)
count_val = ctx.builder.sub(high_val, low_val)
count_val = ctx.builder.add(count_val, core.Constant.int(ctx.i64, 1))
count_val = ctx.builder.trunc(count_val, ctx.i32)
if isinstance(seqof_val, SDLSubstringValue):
arr_ptr = seqof_val.arr_ptr
elif basic_asn1ty.Min == basic_asn1ty.Max:
arr_ptr = ctx.builder.gep(seqof_val, [ctx.zero, ctx.zero])
else:
arr_ptr = ctx.builder.gep(seqof_val, [ctx.zero, ctx.one])
arr_ptr = ctx.builder.gep(arr_ptr, [low_val])
return SDLSubstringValue(arr_ptr, count_val, asn1ty)
@singledispatch
......@@ -1070,32 +1098,40 @@ def _expr_append(expr, ctx):
res_arr_ptr = ctx.builder.gep(res_ptr, [ctx.zero, ctx.one])
left_ptr = expression(expr.left, ctx)
left_len_ptr = ctx.builder.gep(left_ptr, [ctx.zero, ctx.zero])
left_arr_ptr = ctx.builder.gep(left_ptr, [ctx.zero, ctx.one])
left_len_val = ctx.builder.load(left_len_ptr)
if isinstance(left_ptr, SDLSubstringValue):
left_arr_ptr = left_ptr.arr_ptr
left_count_val = left_ptr.count_val
else:
left_len_ptr = ctx.builder.gep(left_ptr, [ctx.zero, ctx.zero])
left_arr_ptr = ctx.builder.gep(left_ptr, [ctx.zero, ctx.one])
left_count_val = ctx.builder.load(left_len_ptr)
right_ptr = expression(expr.right, ctx)
right_len_ptr = ctx.builder.gep(right_ptr, [ctx.zero, ctx.zero])
right_arr_ptr = ctx.builder.gep(right_ptr, [ctx.zero, ctx.one])
right_len_val = ctx.builder.load(right_len_ptr)
if isinstance(right_ptr, SDLSubstringValue):
right_arr_ptr = right_ptr.arr_ptr
right_count_val = right_ptr.count_val
else:
right_len_ptr = ctx.builder.gep(right_ptr, [ctx.zero, ctx.zero])
right_arr_ptr = ctx.builder.gep(right_ptr, [ctx.zero, ctx.one])
right_count_val = ctx.builder.load(right_len_ptr)
res_len_val = ctx.builder.add(left_len_val, right_len_val)
res_len_val = ctx.builder.add(left_count_val, right_count_val)
ctx.builder.store(res_len_val, res_len_ptr)
sdl_call('memcpy', [
ctx.builder.bitcast(res_arr_ptr, ctx.i8_ptr),
ctx.builder.bitcast(left_arr_ptr, ctx.i8_ptr),
ctx.builder.mul(elem_size_val, ctx.builder.zext(left_len_val, ctx.i64)),
ctx.builder.mul(elem_size_val, ctx.builder.zext(left_count_val, ctx.i64)),
core.Constant.int(ctx.i32, 0),
core.Constant.int(ctx.i1, 0)
], ctx)
res_arr_ptr = ctx.builder.gep(res_ptr, [ctx.zero, ctx.one, left_len_val])
res_arr_ptr = ctx.builder.gep(res_ptr, [ctx.zero, ctx.one, left_count_val])
sdl_call('memcpy', [
ctx.builder.bitcast(res_arr_ptr, ctx.i8_ptr),
ctx.builder.bitcast(right_arr_ptr, ctx.i8_ptr),
ctx.builder.mul(elem_size_val, ctx.builder.zext(right_len_val, ctx.i64)),
ctx.builder.mul(elem_size_val, ctx.builder.zext(right_count_val, ctx.i64)),
core.Constant.int(ctx.i32, 0),
core.Constant.int(ctx.i1, 0)
], ctx)
......@@ -1115,22 +1151,24 @@ def _expr_in(expr, ctx):
check_block = func.append_basic_block('in:check')
end_block = func.append_basic_block('in:end')
seq_basic_asn1ty = ctx.basic_asn1type_of(expr.left.exprType)
elem_asn1ty = seq_basic_asn1ty.type
seqof_basic_asn1ty = ctx.basic_asn1type_of(expr.left.exprType)
elem_asn1ty = seqof_basic_asn1ty.type
is_variable_size = seq_basic_asn1ty.Min != seq_basic_asn1ty.Max
is_variable_size = seqof_basic_asn1ty.Min != seqof_basic_asn1ty.Max
idx_ptr = ctx.builder.alloca(ctx.i32)
ctx.builder.store(core.Constant.int(ctx.i32, 0), idx_ptr)
value_val = expression(expr.right, ctx)
struct_ptr = expression(expr.left, ctx)
seqof_val = expression(expr.left, ctx)
if is_variable_size:
if isinstance(seqof_val, SDLSubstringValue):
end_idx = seqof_val.count_val
elif is_variable_size:
# load the current number of elements from the first field
end_idx = ctx.builder.load(ctx.builder.gep(struct_ptr, [ctx.zero, ctx.zero]))
end_idx = ctx.builder.load(ctx.builder.gep(seqof_val, [ctx.zero, ctx.zero]))
else:
array_llty = struct_ptr.type.pointee.elements[0]
array_llty = seqof_val.type.pointee.elements[0]
end_idx = core.Constant.int(ctx.i32, array_llty.count)
ctx.builder.branch(check_block)
......@@ -1138,10 +1176,12 @@ def _expr_in(expr, ctx):
ctx.builder.position_at_end(check_block)
idx_val = ctx.builder.load(idx_ptr)
if is_variable_size:
elem_ptr = ctx.builder.gep(struct_ptr, [ctx.zero, ctx.one, idx_val])
if isinstance(seqof_val, SDLSubstringValue):
elem_ptr = ctx.builder.gep(seqof_val.arr_ptr, [ctx.zero, idx_val])
elif is_variable_size:
elem_ptr = ctx.builder.gep(seqof_val, [ctx.zero, ctx.one, idx_val])
else:
elem_ptr = ctx.builder.gep(struct_ptr, [ctx.zero, ctx.zero, idx_val])
elem_ptr = ctx.builder.gep(seqof_val, [ctx.zero, ctx.zero, idx_val])
if is_struct_ptr(elem_ptr):
cond_val = sdl_equals(value_val, elem_ptr, elem_asn1ty, ctx)
......@@ -1185,38 +1225,7 @@ def _prim_index(prim, ctx):
@expression.register(ogAST.PrimSubstring)
def _prim_substring(prim, ctx):
''' Generate the IR for a substring expression '''
basic_asn1ty = ctx.basic_asn1type_of(prim.exprType)
if basic_asn1ty.Min == basic_asn1ty.Max:
raise NotImplementedError
range_l_val = expression(prim.value[1]['substring'][0], ctx)
range_r_val = expression(prim.value[1]['substring'][1], ctx)
len_val = ctx.builder.sub(range_r_val, range_l_val)
recvr_ptr = expression(prim.value[0], ctx)
recvr_arr_ptr = ctx.builder.gep(recvr_ptr, [ctx.zero, ctx.one, range_l_val])
recvr_llty = recvr_ptr.type.pointee
elem_llty = recvr_llty.elements[1].element
res_ptr = ctx.builder.alloca(recvr_llty)
res_len_ptr = ctx.builder.gep(res_ptr, [ctx.zero, ctx.zero])
res_arr_ptr = ctx.builder.gep(res_ptr, [ctx.zero, ctx.one])
ctx.builder.store(ctx.builder.trunc(len_val, ctx.i32), res_len_ptr)
elem_size_val = core.Constant.sizeof(elem_llty)
size = ctx.builder.mul(elem_size_val, len_val)
align = core.Constant.int(ctx.i32, 0)
volatile = core.Constant.int(ctx.i1, 0)
recvr_arr_ptr = ctx.builder.bitcast(recvr_arr_ptr, ctx.i8_ptr)
res_arr_ptr = ctx.builder.bitcast(res_arr_ptr, ctx.i8_ptr)
sdl_call('memcpy', [res_arr_ptr, recvr_arr_ptr, size, align, volatile], ctx)
return res_ptr
return reference(prim, ctx)
@expression.register(ogAST.PrimCall)
......@@ -1653,13 +1662,44 @@ def is_array_ptr(val):
return val.type.kind == core.TYPE_POINTER and val.type.pointee.kind == core.TYPE_ARRAY
################################################################################
# Values
class SDLSubstringValue():
def __init__(self, arr_ptr, count_val, asn1ty):
self.arr_ptr = arr_ptr
self.count_val = count_val
self.asn1ty = asn1ty
################################################################################
# Operators
def sdl_assign(a_ptr, b_val, ctx):
''' Generate the IR for an Assign operation '''
if is_struct_ptr(a_ptr) or is_array_ptr(a_ptr):
if isinstance(b_val, SDLSubstringValue):
basic_asn1ty = ctx.basic_asn1type_of(b_val.asn1ty)
size = ctx.builder.zext(b_val.count_val, ctx.i64)
align = core.Constant.int(ctx.i32, 0)
volatile = core.Constant.int(ctx.i1, 0)
a_count_ptr = ctx.builder.gep(a_ptr, [ctx.zero, ctx.zero])
if basic_asn1ty.Min == basic_asn1ty.Max:
a_arr_ptr = ctx.builder.gep(a_ptr, [ctx.zero, ctx.zero])
else:
a_arr_ptr = ctx.builder.gep(a_ptr, [ctx.zero, ctx.one])
a_arr_ptr = ctx.builder.bitcast(a_arr_ptr, ctx.i8_ptr)
b_arr_ptr = ctx.builder.bitcast(b_val.arr_ptr, ctx.i8_ptr)
sdl_call('memcpy', [a_arr_ptr, b_arr_ptr, size, align, volatile], ctx)
if basic_asn1ty.Min != basic_asn1ty.Max:
ctx.builder.store(b_val.count_val, a_count_ptr)
elif is_struct_ptr(a_ptr) or is_array_ptr(a_ptr):
size = core.Constant.sizeof(a_ptr.type.pointee)
align = core.Constant.int(ctx.i32, 0)
volatile = core.Constant.int(ctx.i1, 0)
......@@ -1668,6 +1708,7 @@ def sdl_assign(a_ptr, b_val, ctx):
b_ptr = ctx.builder.bitcast(b_val, ctx.i8_ptr)
sdl_call('memcpy', [a_ptr, b_ptr, size, align, volatile], ctx)
else:
ctx.builder.store(b_val, a_ptr)
......@@ -1700,7 +1741,10 @@ def sdl_not_equals(a_val, b_val, asn1ty, ctx):
def sdl_length(s_ptr, s_asn1ty, ctx):
''' Generate the IR for a length operation '''
s_basic_asn1ty = ctx.basic_asn1type_of(s_asn1ty)
if s_basic_asn1ty.Min != s_basic_asn1ty.Max:
if isinstance(s_ptr, SDLSubstringValue):
return ctx.builder.zext(s_ptr.count_val, ctx.i64)
elif s_basic_asn1ty.Min != s_basic_asn1ty.Max:
len_ptr = ctx.builder.gep(s_ptr, [ctx.zero, ctx.zero])
return ctx.builder.zext(ctx.builder.load(len_ptr), ctx.i64)
else:
......@@ -1782,12 +1826,15 @@ def sdl_write(arg_vals, arg_asn1tys, ctx, newline=False):
elif basic_asn1ty.kind == 'OctetStringType':
fmt += '%.*s'
if basic_asn1ty.Min == basic_asn1ty.Max:
if isinstance(arg_val, SDLSubstringValue):
arr_ptr = arg_val.arr_ptr
count_val = arg_val.count_val
elif basic_asn1ty.Min == basic_asn1ty.Max:
arr_ptr = ctx.builder.gep(arg_val, [ctx.zero, ctx.zero])
count_val = core.Constant.int(ctx.i32, arr_ptr.type.pointee.count)
else:
count_val = ctx.builder.load(ctx.builder.gep(arg_val, [ctx.zero, ctx.zero]))
arr_ptr = ctx.builder.gep(arg_val, [ctx.zero, ctx.one])
count_val = ctx.builder.load(ctx.builder.gep(arg_val, [ctx.zero, ctx.zero]))
arg_values.append(count_val)
arg_values.append(arr_ptr)
......
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