mypyc/test-data/irbuild-unreachable.test

# Test cases for unreachable expressions

[case testUnreachableMemberExpr]
import sys

def f() -> None:
    y = sys.platform == "x" and sys.version_info > (3, 5)
[out]
def f():
    r0 :: object
    r1 :: str
    r2 :: object
    r3, r4 :: str
    r5 :: int32
    r6 :: bit
    r7 :: object
    r8, r9, r10 :: bit
    r11, r12 :: bool
    r13 :: object
    r14 :: str
    r15 :: object
    r16 :: tuple[int, int]
    r17, r18 :: object
    r19, y :: bool
L0:
    r0 = sys :: module
    r1 = 'platform'
    r2 = CPyObject_GetAttr(r0, r1)
    r3 = cast(str, r2)
    r4 = 'x'
    r5 = PyUnicode_Compare(r3, r4)
    r6 = r5 == -1
    if r6 goto L1 else goto L3 :: bool
L1:
    r7 = PyErr_Occurred()
    r8 = r7 != 0
    if r8 goto L2 else goto L3 :: bool
L2:
    r9 = CPy_KeepPropagating()
L3:
    r10 = r5 == 0
    if r10 goto L5 else goto L4 :: bool
L4:
    r11 = r10
    goto L6
L5:
    r12 = raise RuntimeError('mypyc internal error: should be unreachable')
    r13 = box(None, 1)
    r14 = 'version_info'
    r15 = CPyObject_GetAttr(r13, r14)
    r16 = (6, 10)
    r17 = box(tuple[int, int], r16)
    r18 = PyObject_RichCompare(r15, r17, 4)
    r19 = unbox(bool, r18)
    r11 = r19
L6:
    y = r11
    return 1

[case testUnreachableNameExpr]
import sys

def f() -> None:
    y = sys.platform == 'x' and foobar
[out]
def f():
    r0 :: object
    r1 :: str
    r2 :: object
    r3, r4 :: str
    r5 :: int32
    r6 :: bit
    r7 :: object
    r8, r9, r10 :: bit
    r11, r12 :: bool
    r13 :: object
    r14, y :: bool
L0:
    r0 = sys :: module
    r1 = 'platform'
    r2 = CPyObject_GetAttr(r0, r1)
    r3 = cast(str, r2)
    r4 = 'x'
    r5 = PyUnicode_Compare(r3, r4)
    r6 = r5 == -1
    if r6 goto L1 else goto L3 :: bool
L1:
    r7 = PyErr_Occurred()
    r8 = r7 != 0
    if r8 goto L2 else goto L3 :: bool
L2:
    r9 = CPy_KeepPropagating()
L3:
    r10 = r5 == 0
    if r10 goto L5 else goto L4 :: bool
L4:
    r11 = r10
    goto L6
L5:
    r12 = raise RuntimeError('mypyc internal error: should be unreachable')
    r13 = box(None, 1)
    r14 = unbox(bool, r13)
    r11 = r14
L6:
    y = r11
    return 1