/
test_yjit.rb
3339 lines (2697 loc) · 52.2 KB
/
test_yjit.rb
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assert_equal 'true', %q{
# regression test for tracking type of locals for too long
def local_setting_cmp(five)
victim = 5
five.define_singleton_method(:respond_to?) do |_, _|
victim = nil
end
# +1 makes YJIT track that victim is a number and
# defined? calls respond_to? from above indirectly
unless (victim + 1) && defined?(five.something)
# Would return wrong result if we still think `five` is a number
victim.nil?
end
end
local_setting_cmp(Object.new)
local_setting_cmp(Object.new)
}
assert_equal '18374962167983112447', %q{
# regression test for incorrectly discarding 32 bits of a pointer when it
# comes to default values.
def large_literal_default(n: 0xff00_fabcafe0_00ff)
n
end
def call_graph_root
large_literal_default
end
call_graph_root
call_graph_root
}
assert_normal_exit %q{
# regression test for a leak caught by an assert on --yjit-call-threshold=2
Foo = 1
eval("def foo = [#{(['Foo,']*256).join}]")
foo
foo
Object.send(:remove_const, :Foo)
}
assert_equal '[nil, nil, nil, nil, nil, nil]', %q{
[NilClass, TrueClass, FalseClass, Integer, Float, Symbol].each do |klass|
klass.class_eval("def foo = @foo")
end
[nil, true, false, 0xFABCAFE, 0.42, :cake].map do |instance|
instance.foo
instance.foo
end
}
assert_equal '0', %q{
# This is a regression test for incomplete invalidation from
# opt_setinlinecache. This test might be brittle, so
# feel free to remove it in the future if it's too annoying.
# This test assumes --yjit-call-threshold=2.
module M
Foo = 1
def foo
Foo
end
def pin_self_type_then_foo
_ = @foo
foo
end
def only_ints
1 + self
foo
end
end
class Integer
include M
end
class Sub
include M
end
foo_method = M.instance_method(:foo)
dbg = ->(message) do
return # comment this out to get printouts
$stderr.puts RubyVM::YJIT.disasm(foo_method)
$stderr.puts message
end
2.times { 42.only_ints }
dbg["There should be two versions of getinlineache"]
module M
remove_const(:Foo)
end
dbg["There should be no getinlinecaches"]
2.times do
42.only_ints
rescue NameError => err
_ = "caught name error #{err}"
end
dbg["There should be one version of getinlineache"]
2.times do
Sub.new.pin_self_type_then_foo
rescue NameError
_ = 'second specialization'
end
dbg["There should be two versions of getinlineache"]
module M
Foo = 1
end
dbg["There should still be two versions of getinlineache"]
42.only_ints
dbg["There should be no getinlinecaches"]
# Find name of the first VM instruction in M#foo.
insns = RubyVM::InstructionSequence.of(foo_method).to_a
if defined?(RubyVM::YJIT.blocks_for) && (insns.last.find { Array === _1 }&.first == :opt_getinlinecache)
RubyVM::YJIT.blocks_for(RubyVM::InstructionSequence.of(foo_method))
.filter { _1.iseq_start_index == 0 }.count
else
0 # skip the test
end
}
# Check that frozen objects are respected
assert_equal 'great', %q{
class Foo
attr_accessor :bar
def initialize
@bar = 1
freeze
end
end
foo = Foo.new
5.times do
begin
foo.bar = 2
rescue FrozenError
end
end
foo.bar == 1 ? "great" : "NG"
}
# Check that global variable set works
assert_equal 'string', %q{
def foo
$foo = "string"
end
foo
}
# Check that exceptions work when setting global variables
assert_equal 'rescued', %q{
def set_var
$var = 100
rescue
:rescued
end
set_var
trace_var(:$var) { raise }
set_var
}
# Check that global variables work
assert_equal 'string', %q{
$foo = "string"
def foo
$foo
end
foo
}
# Check that exceptions work when getting global variable
assert_equal 'rescued', %q{
module Warning
def warn(message)
raise
end
end
def get_var
$=
rescue
:rescued
end
$VERBOSE = true
get_var
get_var
}
# Check that global tracepoints work
assert_equal 'true', %q{
def foo
1
end
foo
foo
foo
called = false
tp = TracePoint.new(:return) { |event|
if event.method_id == :foo
called = true
end
}
tp.enable
foo
tp.disable
called
}
# Check that local tracepoints work
assert_equal 'true', %q{
def foo
1
end
foo
foo
foo
called = false
tp = TracePoint.new(:return) { |_| called = true }
tp.enable(target: method(:foo))
foo
tp.disable
called
}
# Make sure that optional param methods return the correct value
assert_equal '1', %q{
def m(ary = [])
yield(ary)
end
# Warm the JIT with a 0 param call
2.times { m { } }
m(1) { |v| v }
}
# Test for topn
assert_equal 'array', %q{
def threequals(a)
case a
when Array
"array"
when Hash
"hash"
else
"unknown"
end
end
threequals([])
threequals([])
threequals([])
}
# Test for opt_mod
assert_equal '2', %q{
def mod(a, b)
a % b
end
mod(7, 5)
mod(7, 5)
}
# Test for opt_mult
assert_equal '12', %q{
def mult(a, b)
a * b
end
mult(6, 2)
mult(6, 2)
}
# Test for opt_div
assert_equal '3', %q{
def div(a, b)
a / b
end
div(6, 2)
div(6, 2)
}
# BOP redefined methods work when JIT compiled
assert_equal 'false', %q{
def less_than x
x < 10
end
class Integer
def < x
false
end
end
less_than 2
less_than 2
less_than 2
}
# BOP redefinition works on Integer#<
assert_equal 'false', %q{
def less_than x
x < 10
end
less_than 2
less_than 2
class Integer
def < x
false
end
end
less_than 2
}
# Putobject, less-than operator, fixnums
assert_equal '2', %q{
def check_index(index)
if 0x40000000 < index
raise "wat? #{index}"
end
index
end
check_index 2
check_index 2
}
# foo leaves a temp on the stack before the call
assert_equal '6', %q{
def bar
return 5
end
def foo
return 1 + bar
end
foo()
retval = foo()
}
# Method with one arguments
# foo leaves a temp on the stack before the call
assert_equal '7', %q{
def bar(a)
return a + 1
end
def foo
return 1 + bar(5)
end
foo()
retval = foo()
}
# Method with two arguments
# foo leaves a temp on the stack before the call
assert_equal '0', %q{
def bar(a, b)
return a - b
end
def foo
return 1 + bar(1, 2)
end
foo()
retval = foo()
}
# Passing argument types to callees
assert_equal '8.5', %q{
def foo(x, y)
x + y
end
def bar
foo(7, 1.5)
end
bar
bar
}
# Recursive Ruby-to-Ruby calls
assert_equal '21', %q{
def fib(n)
if n < 2
return n
end
return fib(n-1) + fib(n-2)
end
r = fib(8)
}
# Ruby-to-Ruby call and C call
assert_normal_exit %q{
def bar
puts('hi!')
end
def foo
bar
end
foo()
foo()
}
# Method aliasing
assert_equal '42', %q{
class Foo
def method_a
42
end
alias method_b method_a
def method_a
:somethingelse
end
end
@obj = Foo.new
def test
@obj.method_b
end
test
test
}
# Method aliasing with method from parent class
assert_equal '777', %q{
class A
def method_a
777
end
end
class B < A
alias method_b method_a
end
@obj = B.new
def test
@obj.method_b
end
test
test
}
# The hash method is a C function and uses the self argument
assert_equal 'true', %q{
def lehashself
hash
end
a = lehashself
b = lehashself
a == b
}
# Method redefinition (code invalidation) test
assert_equal '1', %q{
def ret1
return 1
end
klass = Class.new do
def alias_then_hash(klass, method_to_redefine)
# Redefine the method to be ret1
klass.alias_method(method_to_redefine, :ret1)
hash
end
end
instance = klass.new
i = 0
while i < 12
if i < 11
# Redefine the bar method
instance.alias_then_hash(klass, :bar)
else
# Redefine the hash method to be ret1
retval = instance.alias_then_hash(klass, :hash)
end
i += 1
end
retval
}
# Code invalidation and opt_getinlinecache
assert_normal_exit %q{
class Foo; end
# Uses the class constant Foo
def use_constant(arg)
[Foo.new, arg]
end
def propagate_type
i = Array.new
i.itself # make it remember that i is on-heap
use_constant(i)
end
propagate_type
propagate_type
use_constant(Foo.new)
class Jo; end # bump global constant state
use_constant(3)
}
# Method redefinition (code invalidation) and GC
assert_equal '7', %q{
def bar()
return 5
end
def foo()
bar()
end
foo()
foo()
def bar()
return 7
end
4.times { GC.start }
foo()
foo()
}
# Method redefinition with two block versions
assert_equal '7', %q{
def bar()
return 5
end
def foo(n)
return ((n < 5)? 5:false), bar()
end
foo(4)
foo(4)
foo(10)
foo(10)
def bar()
return 7
end
4.times { GC.start }
foo(4)
foo(4)[1]
}
# Method redefinition while the method is on the stack
assert_equal '[777, 1]', %q{
def foo
redef()
777
end
def redef
# Redefine the global foo
eval("def foo; 1; end", TOPLEVEL_BINDING)
# Collect dead code
GC.stress = true
GC.start
# But we will return to the original foo,
# which remains alive because it's on the stack
end
# Must produce [777, 1]
[foo, foo]
}
# Test for GC safety. Don't invalidate dead iseqs.
assert_normal_exit %q{
Class.new do
def foo
itself
end
new.foo
new.foo
new.foo
new.foo
end
4.times { GC.start }
def itself
self
end
}
# test setinstancevariable on extended objects
assert_equal '1', %q{
class Extended
attr_reader :one
def write_many
@a = 1
@b = 2
@c = 3
@d = 4
@one = 1
end
end
foo = Extended.new
foo.write_many
foo.write_many
foo.write_many
}
# test setinstancevariable on embedded objects
assert_equal '1', %q{
class Embedded
attr_reader :one
def write_one
@one = 1
end
end
foo = Embedded.new
foo.write_one
foo.write_one
foo.write_one
}
# test setinstancevariable after extension
assert_equal '[10, 11, 12, 13, 1]', %q{
class WillExtend
attr_reader :one
def make_extended
@foo1 = 10
@foo2 = 11
@foo3 = 12
@foo4 = 13
end
def write_one
@one = 1
end
def read_all
[@foo1, @foo2, @foo3, @foo4, @one]
end
end
foo = WillExtend.new
foo.write_one
foo.write_one
foo.make_extended
foo.write_one
foo.read_all
}
# test setinstancevariable on frozen object
assert_equal 'object was not modified', %q{
class WillFreeze
def write
@ivar = 1
end
end
wf = WillFreeze.new
wf.write
wf.write
wf.freeze
begin
wf.write
rescue FrozenError
"object was not modified"
end
}
# Test getinstancevariable and inline caches
assert_equal '6', %q{
class Foo
def initialize
@x1 = 1
@x2 = 1
@x2 = 1
@x3 = 1
@x4 = 3
end
def bar
x = 1
@x4 + @x4
end
end
f = Foo.new
f.bar
f.bar
}
# Test that getinstancevariable codegen checks for extended table size
assert_equal "nil\n", %q{
class A
def read
@ins1000
end
end
ins = A.new
other = A.new
10.times { other.instance_variable_set(:"@otr#{_1}", 'value') }
1001.times { ins.instance_variable_set(:"@ins#{_1}", 'value') }
ins.read
ins.read
ins.read
p other.read
}
# Test that opt_aref checks the class of the receiver
assert_equal 'special', %q{
def foo(array)
array[30]
end
foo([])
foo([])
special = []
def special.[](idx)
'special'
end
foo(special)
}
# Test that object references in generated code get marked and moved
assert_equal "good", %q{
def bar
"good"
end
def foo
bar
end
foo
foo
begin
GC.verify_compaction_references(expand_heap: true, toward: :empty)
rescue NotImplementedError
# in case compaction isn't supported
end
foo
}
# Test polymorphic getinstancevariable. T_OBJECT -> T_STRING
assert_equal 'ok', %q{
@hello = @h1 = @h2 = @h3 = @h4 = 'ok'
str = ""
str.instance_variable_set(:@hello, 'ok')
public def get
@hello
end
get
get
str.get
str.get
}
# Test polymorphic getinstancevariable, two different classes
assert_equal 'ok', %q{
class Embedded
def initialize
@ivar = 0
end
def get
@ivar
end
end
class Extended < Embedded
def initialize
@v1 = @v2 = @v3 = @v4 = @ivar = 'ok'
end
end
embed = Embedded.new
extend = Extended.new
embed.get
embed.get
extend.get
extend.get
}
# Test megamorphic getinstancevariable
assert_equal 'ok', %q{
parent = Class.new do
def initialize
@hello = @h1 = @h2 = @h3 = @h4 = 'ok'
end
def get
@hello
end
end
subclasses = 300.times.map { Class.new(parent) }
subclasses.each { _1.new.get }
parent.new.get
}
# Test polymorphic opt_aref. array -> hash
assert_equal '[42, :key]', %q{
def index(obj, idx)
obj[idx]
end
index([], 0) # get over compilation threshold
[
index([42], 0),
index({0=>:key}, 0),
]
}
# Test polymorphic opt_aref. hash -> array -> custom class
assert_equal '[nil, nil, :custom]', %q{
def index(obj, idx)
obj[idx]
end
custom = Object.new
def custom.[](_idx)
:custom
end
index({}, 0) # get over compilation threshold
[
index({}, 0),
index([], 0),
index(custom, 0)
]
}
# Test polymorphic opt_aref. array -> custom class
assert_equal '[42, :custom]', %q{
def index(obj, idx)
obj[idx]
end
custom = Object.new
def custom.[](_idx)
:custom
end
index([], 0) # get over compilation threshold
[
index([42], 0),
index(custom, 0)
]
}
# Test custom hash method with opt_aref
assert_equal '[nil, :ok]', %q{
def index(obj, idx)
obj[idx]
end
custom = Object.new
def custom.hash
42
end
h = {custom => :ok}
[
index(h, 0),
index(h, custom)
]
}
# Test default value block for Hash with opt_aref
assert_equal '[42, :default]', %q{
def index(obj, idx)
obj[idx]
end
h = Hash.new { :default }
h[0] = 42
[
index(h, 0),
index(h, 1)
]
}
# A regression test for making sure cfp->sp is proper when
# hitting stubs. See :stub-sp-flush:
assert_equal 'ok', %q{
class D
def foo
Object.new
end
end
GC.stress = true
10.times do
D.new.foo
# ^
# This hits a stub with sp_offset > 0
end
:ok
}
# Test polymorphic callsite, cfunc -> iseq
assert_equal '[Cfunc, Iseq]', %q{
public def call_itself
itself # the polymorphic callsite
end
class Cfunc; end
class Iseq
def itself
self
end
end
call_itself # cross threshold
[Cfunc.call_itself, Iseq.call_itself]
}