def emitabs(self, node):
if (len(node.args) != 1):
raise PyllvmError("mmath: one argument to abs")
ty = self.codeGen.typer.inferType(node.args[0])
v = self.codeGen.visit(node.args[0])
if (ty == int):
return self.codeGen.builder.call(self.codeGen._mabs, [v])
elif (ty == float):
return self.codeGen.builder.call(self.codeGen._fmabs, [v])
raise PyllvmError("mmath: unhandled type for abs")
def emitfloat(self, node):
if (len(node.args) != 1):
raise PyllvmError("mmath: one argument to float")
ty = self.codeGen.typer.inferType(node.args[0])
v = self.codeGen.visit(node.args[0])
if (ty == float):
return v
elif (ty == int):
return self.codeGen.builder.sitofp(v, llFloatType)
raise PyllvmError("mmath: unhandled type for float")
def emitexp(self, node):
if (len(node.args) != 1):
raise PyllvmError("mmath: one argument to log")
ty = self.codeGen.typer.inferType(node.args[0])
v = self.codeGen.visit(node.args[0])
if (ty == int):
l = self.codeGen.builder.sitofp(v, llFloatType)
return self.codeGen.builder.fptosi(
self.codeGen.builder.call(self.codeGen._exp, [l]), llIntType)
elif (ty == float):
return self.codeGen.builder.call(self.codeGen._exp, [v])
raise PyllvmError("mmath: unhandled type for log")
def emitsqrt(self, node):
if (len(node.args) != 1):
raise PyllvmError("mmath: one argument to sqrt")
ty = self.codeGen.typer.inferType(node.args[0])
v = self.codeGen.visit(node.args[0])
if (ty == int):
# first cast int to float, then do float sqrt
i2f = self.codeGen.builder.sitofp(v, llFloatType, 'i2f')
ret = self.codeGen.builder.call(self.codeGen._fsqrt, [i2f])
return self.codeGen.builder.fptosi(ret, llIntType)
elif (ty == float):
return self.codeGen.builder.call(self.codeGen._fsqrt, [v])
raise PyllvmError("mmath: unhandled type for sqrt")
def emitmod(self, node):
if (len(node.args) != 2):
raise PyllvmError("mmath: 2 arguments needed for mod")
lty = self.codeGen.typer.inferType(node.args[0])
rty = self.codeGen.typer.inferType(node.args[1])
if lty != rty:
raise PyllvmError("mmath: both arguments must match type for mod")
l = self.codeGen.visit(node.args[0])
r = self.codeGen.visit(node.args[1])
if (rty == int):
return self.codeGen.builder.srem(l, r)
elif (rty == float):
return self.codeGen.builder.frem(l, r)
raise PyllvmError("mmath: unhandled type for mod")
def genUniqueSymbol(self, type):
"""
Generate unique symbol.
"""
nMax = 1000
baseName = "tmp"
done = False
i = 0
while 1:
name = baseName + str(self.genNum)
if self.find(name) == None:
newSym = Symbol(name, type, "variable")
self.append(newSym)
return newSym
self.genNum += 1
i += 1
if i > nMax:
raise PyllvmError("Symbol Table: Can't define unique symbol.")
def __div__(self, b):
if not isinstance(b, vec):
raise PyllvmError("MUDA: RHS is not a type of vec")
tmp = vec([x / y for x, y in zip(self.value, b.value)])
return tmp
def emitzeros(self, node):
# get start and end points
ty = self.codeGen.typer.inferType(node.args[0])
if (ty != int and ty != float):
raise PyllvmError("mmath: zeros needs numerical arguments")
for n in node.args:
if not isinstance(n, compiler.ast.Const):
raise PyllvmError("mmath: need to pass zeros constant values")
if len(node.args) == 1:
start = 0
end = int(node.args[0].value)
z = 0
else:
start = 0
end = int(node.args[0].value)
z = node.args[1].value
ty = self.codeGen.typer.inferType(node.args[1])
if (end < start):
raise PyllvmError("mmath: bad zeros args")
# malloc array
if (ty == int):
arrTy = llvm.core.Type.array(llIntType, end - start)
else:
arrTy = llvm.core.Type.array(llFloatType, end - start)
m_ptr = self.codeGen.builder.alloca_array(
arrTy, llvm.core.Constant.int(llIntType, end - start))
# copy all the values from the stack one into the heap
zero = llvm.core.Constant.int(llIntType, 0)
count = 0
for v in range(start, end + 1):
index = llvm.core.Constant.int(llIntType, count)
# create value to store
if ty == int:
val = llvm.core.Constant.int(llIntType, z)
else:
val = llvm.core.Constant.real(llFloatType, z)
# store values in malloc'd array
m = self.codeGen.builder.gep(m_ptr, [zero, index])
self.codeGen.builder.store(val, m)
count = count + 1
# reset expr to the malloc'd array ptr
return m_ptr
def emitpow(self, node):
if (len(node.args) != 2):
raise PyllvmError("mmath: 2 arguments needed for pow")
lty = self.codeGen.typer.inferType(node.args[0])
rty = self.codeGen.typer.inferType(node.args[1])
l = self.codeGen.visit(node.args[0])
r = self.codeGen.visit(node.args[1])
if rty == int:
r = self.codeGen.builder.sitofp(r, llFloatType)
elif rty != float:
raise PyllvmError("mmath: exponent must be numerical")
if (lty == int):
l = self.codeGen.builder.sitofp(l, llFloatType)
return self.codeGen.builder.fptosi(
self.codeGen.builder.call(self.codeGen._fpow, [l, r]),
llIntType)
elif (lty == float):
return self.codeGen.builder.call(self.codeGen._fpow, [l, r])
raise PyllvmError("mmath: base for exponent must be numerical")
def lookup(self, name):
"""
Find a symbol with name.
If a symbol was not found, raise a exeption.
"""
for i in range(len(self.symbols)):
d = self.symbols[i][1]
if d.has_key(name):
return d[name]
raise PyllvmError("Symbol Table: Undefine symbol: ", name)
def __init__(self, *args):
v = []
if len(args) == 4:
# vec(1.0, 2.0, 3.0, 4.0)
for a in args:
assert isinstance(
a,
float), ("Arg must be a float type, but %s(%s) is given" %
(a, type(a)))
v.append(a)
elif len(args) == 1:
if isinstance(args[0], list):
# vec([1.0, 2.0, 3.0, 4.0])
v = args[0]
elif isinstance(args[0], float):
# vec(1.0)
v.append(args[0])
v.append(args[0])
v.append(args[0])
v.append(args[0])
else:
raise PyllvmError("MUDA: Unsupported input for vec():", args)
elif len(args) == 0:
# vec()
v = [0.0, 0.0, 0.0, 0.0]
else:
raise PyllvmError("MUDA: Unsupported input for vec():", args)
self.value = v
def __le__(self, b):
if not isinstance(b, vec):
raise PyllvmError("MUDA: RHS is not a type of vec")
r = [0.0, 0.0, 0.0, 0.0]
for i in range(4):
if self.value[i] <= b.value[i]:
r[i] = b2f(0xffffffff)
else:
r[i] = b2f(0x00000000)
return vec(r)
def __getattr__(self, name):
#
# Handle swizzle
#
d = {'x': 0, 'y': 1, 'z': 2, 'w': 3}
assert len(name) < 5, "Invalid attribute: %s" % name
if len(name) == 1:
return self.value[d[name]]
v = vec([0.0, 0.0, 0.0, 0.0])
for (i, s) in enumerate(name):
if not d.has_key(s):
raise PyllvmError("MUDA: Invalid letter for swizzle:", name)
v.value[i] = self.value[d[s]]
for i in range(len(name), 4):
v.value[i] = self.value[d[name[-1]]]
return v