mirror of https://github.com/m-labs/artiq.git
compiler/ir_values: implement rational mul/div
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@ -188,6 +188,22 @@ class VBool(VInt):
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# Fraction type
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def _gcd64(builder, a, b):
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gcd_f = builder.module.get_function_named("__gcd64")
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return builder.call(gcd_f, [a, b])
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def _frac_normalize(builder, numerator, denominator):
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gcd = _gcd64(numerator, denominator)
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numerator = builder.sdiv(numerator, gcd)
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denominator = builder.sdiv(denominator, gcd)
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return numerator, denominator
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def _frac_make_ssa(builder, numerator, denominator):
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value = lc.Constant.undef(lc.Type.vector(lc.Type.int(64), 2))
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value = builder.insert_element(value, numerator, lc.Constant.int(lc.Type.int(), 0))
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value = builder.insert_element(value, denominator, lc.Constant.int(lc.Type.int(), 1))
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return value
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class VFraction(_Value):
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def get_llvm_type(self):
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return lc.Type.vector(lc.Type.int(64), 2)
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@ -202,25 +218,20 @@ class VFraction(_Value):
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if not isinstance(other, VFraction):
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raise TypeError
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def _nd(self, builder):
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def _nd(self, builder, invert=False):
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ssa_value = self.get_ssa_value(builder)
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numerator = builder.extract_element(ssa_value, lc.Constant.int(lc.Type.int(), 0))
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denominator = builder.extract_element(ssa_value, lc.Constant.int(lc.Type.int(), 1))
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return numerator, denominator
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if invert:
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return denominator, numerator
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else:
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return numerator, denominator
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def set_value_nd(self, builder, numerator, denominator):
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numerator = numerator.o_int64(builder).get_ssa_value(builder)
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denominator = denominator.o_int64(builder).get_ssa_value(builder)
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gcd_f = builder.module.get_function_named("__gcd64")
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gcd = builder.call(gcd_f, [numerator, denominator])
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numerator = builder.sdiv(numerator, gcd)
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denominator = builder.sdiv(denominator, gcd)
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value = lc.Constant.undef(lc.Type.vector(lc.Type.int(64), 2))
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value = builder.insert_element(value, numerator, lc.Constant.int(lc.Type.int(), 0))
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value = builder.insert_element(value, denominator, lc.Constant.int(lc.Type.int(), 1))
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self.set_ssa_value(builder, value)
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numerator, denominator = _frac_normalize(builder, numerator, denominator)
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self.set_ssa_value(builder, _frac_make_ssa(builder, numerator, denominator))
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def set_value(self, builder, n):
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if not isinstance(n, VFraction):
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@ -255,7 +266,7 @@ class VFraction(_Value):
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r.set_ssa_value(builder, builder.sdiv(r_numerator, denominator))
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return r.o_intx(target_bits, builder)
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def _o_eq_inv(self, other, builder, invert):
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def _o_eq_inv(self, other, builder, ne):
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if isinstance(other, VFraction):
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r = VBool()
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if builder is not None:
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@ -265,7 +276,7 @@ class VFraction(_Value):
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eo = builder.extract_element(other.get_ssa_value(builder), lc.Constant.int(lc.Type.int(), i))
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ee.append(builder.icmp(lc.ICMP_EQ, es, eo))
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ssa_r = builder.and_(ee[0], ee[1])
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if invert:
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if ne:
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ssa_r = builder.xor(ssa_r, lc.Constant.int(lc.Type.int(1), 1))
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r.set_ssa_value(builder, ssa_r)
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return r
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@ -278,6 +289,68 @@ class VFraction(_Value):
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def o_ne(self, other, builder):
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return self._o_eq_inv(other, builder, True)
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def _o_muldiv(self, other, builder, div, invert=False):
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r = VFraction()
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if isinstance(other, VInt):
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if builder is None:
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return r
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else:
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numerator, denominator = self._nd(builder, invert)
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i = other.get_ssa_value(builder)
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if div:
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gcd = _gcd64(i, numerator)
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i = builder.sdiv(i, gcd)
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numerator = builder.sdiv(numerator, gcd)
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denominator = builder.mul(denominator, i)
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else:
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gcd = _gcd64(i, denominator)
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i = builder.sdiv(i, gcd)
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denominator = builder.sdiv(denominator, gcd)
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numerator = builder.mul(numerator, i)
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self.set_ssa_value(builder, _frac_make_ssa(builder, numerator, denominator))
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elif isinstance(other, VFraction):
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if builder is None:
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return r
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else:
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numerator, denominator = self._nd(builder, invert)
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onumerator, odenominator = other._nd(builder)
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if div:
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numerator = builder.mul(numerator, odenominator)
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denominator = builder.mul(denominator, onumerator)
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else:
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numerator = builder.mul(numerator, onumerator)
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denominator = builder.mul(denominator, odenominator)
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numerator, denominator = _frac_normalize(builder, numerator, denominator)
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self.set_ssa_value(builder, _frac_make_ssa(builder, numerator, denominator))
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else:
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return NotImplemented
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def o_mul(self, other, builder):
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return self._o_muldiv(other, builder, False)
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def o_truediv(self, other, builder):
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return self._o_muldiv(other, builder, True)
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def or_mul(self, other, builder):
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return self._o_muldiv(other, builder, False)
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def or_truediv(self, other, builder):
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return self._o_muldiv(other, builder, False, True)
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def o_floordiv(self, other, builder):
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r = self.o_truediv(other, builder)
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if r is NotImplemented:
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return r
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else:
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return r.o_int(builder)
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def or_floordiv(self, other, builder):
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r = self.or_truediv(other, builder)
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if r is NotImplemented:
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return r
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else:
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return r.o_int(builder)
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# Operators
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def _make_unary_operator(op_name):
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