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|
#!/usr/bin/env python
from hypothesis import assume, given, settings, strategies
from rpython.jit.backend.riscv import codebuilder
from rpython.jit.backend.riscv import registers as r
from rpython.jit.backend.riscv import rounding_modes
from rpython.jit.backend.riscv.arch import XLEN
from rpython.jit.backend.riscv.instructions import (
AMO_ACQUIRE, AMO_RELEASE, FMO_INPUT, FMO_OUTPUT, FMO_READ, FMO_WRITE,
all_instructions)
from rpython.jit.backend.riscv.test.external_assembler import assemble
import py
class CodeBuilder(codebuilder.AbstractRISCVBuilder):
def __init__(self):
self.buffer = []
self._int_const_pool = {}
self._float_const_pool = {}
def writechar(self, char):
self.buffer.append(char)
def overwrite(self, index, char):
self.buffer[index] = char
def hexdump(self):
return ''.join(self.buffer)
def append_pending_int_constant(self, load_inst_pos, reg, const_value):
self._int_const_pool[load_inst_pos] = (reg, const_value)
def append_pending_float_constant(self, load_inst_pos, reg, const_value):
self._float_const_pool[load_inst_pos] = (reg, const_value)
def _get_relative_pos_for_load_imm(self, break_basic_block=False):
return len(self.buffer)
emit_pending_constants = codebuilder._emit_pending_constants
class TestCodeBuilder(object):
pass
def _get_op_name(mnemonic):
return mnemonic.replace('_', '.')
def _get_fence_memory_order_str(mo_bits):
res = ''
if mo_bits & FMO_INPUT:
res += 'i'
if mo_bits & FMO_OUTPUT:
res += 'o'
if mo_bits & FMO_READ:
res += 'r'
if mo_bits & FMO_WRITE:
res += 'w'
return res
def _get_amo_suffix(aqrl):
res = ''
if aqrl & AMO_ACQUIRE:
res += 'aq'
if aqrl & AMO_RELEASE:
res += 'rl'
return '.' + res if res else ''
def _get_op_test_strategy(op_spec):
if op_spec == 'R' or op_spec == 'RB':
return strategies.sampled_from(r.registers_except_zero)
elif op_spec == 'F':
return strategies.sampled_from(r.fp_registers)
elif op_spec == 'I12':
return strategies.integers(min_value=-2**11, max_value=2**11 - 1)
elif op_spec == 'I13':
return strategies.integers(min_value=-2**11, max_value=2**11 - 1) \
.map(lambda x: x * 2).filter(lambda x: x != 2)
elif op_spec == 'U20':
return strategies.integers(min_value=0, max_value=2**20 - 1)
elif op_spec == 'I21':
return strategies.integers(min_value=-2**19, max_value=2**19 - 1) \
.map(lambda x: x * 2).filter(lambda x: x != 2)
elif op_spec == 'SH5':
return strategies.integers(min_value=0, max_value=2**5 - 1)
elif op_spec == 'SH6':
return strategies.integers(min_value=0, max_value=2**6 - 1)
elif op_spec == 'RM':
return strategies.sampled_from(rounding_modes.all_rounding_modes)
elif op_spec == 'FMO':
return strategies.integers(min_value=1, max_value=15)
elif op_spec == 'AMO':
return strategies.integers(min_value=0, max_value=3)
elif op_spec == 'AMOLR':
return strategies.sampled_from([0, AMO_ACQUIRE,
AMO_ACQUIRE | AMO_RELEASE])
elif op_spec == 'AMOSC':
return strategies.sampled_from([0, AMO_RELEASE,
AMO_ACQUIRE | AMO_RELEASE])
assert False, 'unhandled op spec: ' + op_spec
def _gen_r_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 3
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
rs2=_get_op_test_strategy(op_spec[2]))
def test(self, rd, rs1, rs2):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1, rs2)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %s, %s' % (op_name, rd, rs1, rs2)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_i_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 3
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
imm=_get_op_test_strategy(op_spec[2]))
def test(self, rd, rs1, imm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1, imm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
if op_spec[1] == 'RB':
asm = '%s %s, %d(%s)' % (op_name, rd, imm, rs1)
else:
asm = '%s %s, %s, %d' % (op_name, rd, rs1, imm)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_s_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 3
assert op_spec[1] == 'RB'
@settings(max_examples=20)
@given(rs2=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
imm=_get_op_test_strategy(op_spec[2]))
def test(self, rs2, rs1, imm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rs2, rs1, imm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %d(%s)' % (op_name, rs2, imm, rs1)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_b_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 3
@settings(max_examples=20)
@given(rs1=_get_op_test_strategy(op_spec[0]),
rs2=_get_op_test_strategy(op_spec[1]),
imm=_get_op_test_strategy(op_spec[2]))
def test(self, rs1, rs2, imm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rs1, rs2, imm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
if imm <= 0:
asm = '''
.L0:
.fill %d
%s %s, %s, .L0
''' % (-imm, op_name, rs1, rs2)
ref_out = assemble(asm)
assert len(ref_out) == -imm + 4
assert ref_out[0:-imm] == '\x00' * -imm
ref_out = ref_out[-imm:]
else:
asm = '''
%s %s, %s, .L0
.fill %d
.L0:
''' % (op_name, rs1, rs2, imm - 4)
ref_out = assemble(asm)
assert len(ref_out) == imm
assert ref_out[4:] == '\x00' * (imm - 4)
ref_out = ref_out[0:4]
assert ref_out == test_out
return test
def _gen_u_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 2
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
imm=_get_op_test_strategy(op_spec[1]))
def test(self, rd, imm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, imm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %d' % (op_name, rd, imm)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_j_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 2
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
imm=_get_op_test_strategy(op_spec[1]))
def test(self, rd, imm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, imm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
if imm <= 0:
asm = '''
.L0:
.fill %d
%s %s, .L0
''' % (-imm, op_name, rd)
ref_out = assemble(asm)
assert len(ref_out) == -imm + 4
assert ref_out[0:-imm] == '\x00' * -imm
ref_out = ref_out[-imm:]
else:
asm = '''
%s %s, .L0
.fill %d
.L0:
''' % (op_name, rd, imm - 4)
ref_out = assemble(asm)
assert len(ref_out) == imm
assert ref_out[4:] == '\x00' * (imm - 4)
ref_out = ref_out[0:4]
assert ref_out == test_out
return test
def _gen_r4_rm_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 5
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
rs2=_get_op_test_strategy(op_spec[2]),
rs3=_get_op_test_strategy(op_spec[3]),
rm=_get_op_test_strategy(op_spec[4]))
def test(self, rd, rs1, rs2, rs3, rm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1, rs2, rs3, rm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %s, %s, %s, %s' % (op_name, rd, rs1, rs2, rs3, rm)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_r_rm_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 4
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
rs2=_get_op_test_strategy(op_spec[2]),
rm=_get_op_test_strategy(op_spec[3]))
def test(self, rd, rs1, rs2, rm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1, rs2, rm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %s, %s, %s' % (op_name, rd, rs1, rs2, rm)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_i12_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 2
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]))
def test(self, rd, rs1):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %s' % (op_name, rd, rs1)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_i12_rm_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 3
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
rm=_get_op_test_strategy(op_spec[2]))
def test(self, rd, rs1, rm):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1, rm)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s %s, %s, %s' % (op_name, rd, rs1, rm)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_a_type_instr_test(mnemonic, instr_type, op_spec):
assert op_spec == ''
def test(self):
cb = CodeBuilder()
getattr(cb, mnemonic)()
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
asm = '%s' % (op_name)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_f_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 2
@settings(max_examples=20)
@given(pred_order=_get_op_test_strategy(op_spec[0]),
succ_order=_get_op_test_strategy(op_spec[1]))
def test(self, pred_order, succ_order):
cb = CodeBuilder()
getattr(cb, mnemonic)(pred_order, succ_order)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic)
pred_order_str = _get_fence_memory_order_str(pred_order)
succ_order_str = _get_fence_memory_order_str(succ_order)
asm = '%s %s, %s' % (op_name, pred_order_str, succ_order_str)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_amo2_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 3
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs1=_get_op_test_strategy(op_spec[1]),
aqrl=_get_op_test_strategy(op_spec[2]))
def test(self, rd, rs1, aqrl):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs1, aqrl)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic) + _get_amo_suffix(aqrl)
asm = '%s %s, (%s)' % (op_name, rd, rs1)
ref_out = assemble(asm)
assert ref_out == test_out
return test
def _gen_amo3_type_instr_test(mnemonic, instr_type, op_spec):
op_spec = op_spec.split(':')
assert len(op_spec) == 4
@settings(max_examples=20)
@given(rd=_get_op_test_strategy(op_spec[0]),
rs2=_get_op_test_strategy(op_spec[1]),
rs1=_get_op_test_strategy(op_spec[2]),
aqrl=_get_op_test_strategy(op_spec[3]))
def test(self, rd, rs2, rs1, aqrl):
cb = CodeBuilder()
getattr(cb, mnemonic)(rd, rs2, rs1, aqrl)
test_out = cb.hexdump()
op_name = _get_op_name(mnemonic) + _get_amo_suffix(aqrl)
# Note: AMO instruction assembly puts rs2 in parentheses and at the
# end.
asm = '%s %s, %s, (%s)' % (op_name, rd, rs2, rs1)
ref_out = assemble(asm)
assert ref_out == test_out
return test
_INSTR_TYPE_DICT = {
'R': _gen_r_type_instr_test,
'I': _gen_i_type_instr_test,
'S': _gen_s_type_instr_test,
'B': _gen_b_type_instr_test,
'U': _gen_u_type_instr_test,
'J': _gen_j_type_instr_test,
'I_SHAMT5': _gen_i_type_instr_test,
'I_SHAMT6': _gen_i_type_instr_test,
'R4_RM': _gen_r4_rm_type_instr_test,
'R_RM': _gen_r_rm_type_instr_test,
'I12': _gen_i12_type_instr_test,
'I12_RM': _gen_i12_rm_type_instr_test,
'A': _gen_a_type_instr_test,
'F': _gen_f_type_instr_test,
'AMO2': _gen_amo2_type_instr_test,
'AMO3': _gen_amo3_type_instr_test,
}
def _gen_instr_test(mnemonic, instr_type, op_spec):
return _INSTR_TYPE_DICT[instr_type](mnemonic, instr_type, op_spec)
def _gen_all_instr_tests(cls):
for mnemonic, instr_type, op_spec, fields in all_instructions:
if instr_type not in _INSTR_TYPE_DICT:
continue
setattr(cls, 'test_' + mnemonic,
_gen_instr_test(mnemonic, instr_type, op_spec))
_gen_all_instr_tests(TestCodeBuilder)
class TestLoadImm(object):
def test_load_int_imm_single_addi(self):
rd = r.x5
imm = -42
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
test_out = cb.hexdump()
cb = CodeBuilder()
cb.ADDI(rd.value, r.zero.value, imm)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_int_imm_single_lui(self):
rd = r.x5
imm = -8192
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
test_out = cb.hexdump()
cb = CodeBuilder()
cb.LUI(rd.value, 0xffffe)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_int_imm_lui_addiw(self):
rd = r.x5
imm = -8191
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
test_out = cb.hexdump()
cb = CodeBuilder()
cb.LUI(rd.value, 0xffffe)
cb.ADDIW(rd.value, rd.value, 0x001)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_int_imm_lui_addiw_i32_max(self):
rd = r.x5
imm = 0x7fffffff
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
test_out = cb.hexdump()
cb = CodeBuilder()
cb.LUI(rd.value, 0x80000)
cb.ADDIW(rd.value, rd.value, -1)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_int_imm_lui_addiw_i32_min(self):
rd = r.x5
imm = -0x80000000
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
test_out = cb.hexdump()
cb = CodeBuilder()
cb.LUI(rd.value, 0x80000)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_int_imm_lui_addiw_i32_next_min(self):
rd = r.x5
imm = -0x7fffffff
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
test_out = cb.hexdump()
cb = CodeBuilder()
cb.LUI(rd.value, 0x80000)
cb.ADDIW(rd.value, rd.value, 1)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_int_imm_large_imm(self):
if XLEN != 8:
py.test.skip('only 64-bit need constant pool, skip 32-bit')
rd = r.x10
imm = 0x1122334455667788
cb = CodeBuilder()
cb.load_int_imm(rd.value, imm)
cb.RET()
cb.emit_pending_constants()
test_out = cb.hexdump()
cb = CodeBuilder()
cb.AUIPC(rd.value, 0)
cb.load_int(rd.value, rd.value, 16)
cb.RET()
cb.write32(0) # Automatically inserted alignment
cb.write64(imm)
ref_out = cb.hexdump()
assert ref_out == test_out
def test_load_float_imm(self):
rd = r.f10
imm = 0x3ff0000000000000
cb = CodeBuilder()
cb.load_float_imm(rd.value, imm)
cb.RET()
cb.emit_pending_constants()
test_out = cb.hexdump()
cb = CodeBuilder()
cb.AUIPC(r.x31.value, 0)
cb.load_float(rd.value, r.x31.value, 16)
cb.RET()
cb.write32(0) # Automatically inserted alignment
cb.write64(imm)
ref_out = cb.hexdump()
assert ref_out == test_out
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