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// RUN: %target-sil-opt -enable-experimental-static-assert %s -dataflow-diagnostics -verify
sil_stage canonical
import Builtin
import Swift
// Static assertion that "1 + 1 == 2".
sil @test1 : $@convention(thin) () -> () {
bb0:
%0 = integer_literal $Builtin.Int32, 1
%1 = builtin "add_Int32"(%0 : $Builtin.Int32, %0 : $Builtin.Int32) : $(Builtin.Int32)
%2 = integer_literal $Builtin.Int32, 2
%3 = builtin "cmp_eq_Int32"(%1 : $Builtin.Int32, %2 : $Builtin.Int32) : $(Builtin.Int1)
%4 = string_literal utf8 ""
%5 = builtin "poundAssert"(%3 : $Builtin.Int1, %4 : $Builtin.RawPointer) : $()
return undef : $()
}
// Static assertion that "2 + 2 == 5".
sil @test2 : $@convention(thin) () -> () {
bb0:
%0 = integer_literal $Builtin.Int32, 2
%1 = builtin "add_Int32"(%0 : $Builtin.Int32, %0 : $Builtin.Int32) : $(Builtin.Int32)
%2 = integer_literal $Builtin.Int32, 5
%3 = builtin "cmp_eq_Int32"(%1 : $Builtin.Int32, %2 : $Builtin.Int32) : $(Builtin.Int1)
%4 = string_literal utf8 ""
// expected-error @+1 {{assertion failed}}
%5 = builtin "poundAssert"(%3 : $Builtin.Int1, %4 : $Builtin.RawPointer) : $()
return undef : $()
}
// Tests that piecewise initialization of memory works during flow-sensitive
// evaluation, by piecewise initializing a tuple in a function.
sil @piecewiseInitFlowSensitive : $@convention(thin) () -> Bool {
bb0:
// Allocate and initialize the tuple to (1, 2).
%0 = alloc_stack $(Int64, Int64), var, name "tup"
%1 = tuple_element_addr %0 : $*(Int64, Int64), 0
%2 = tuple_element_addr %0 : $*(Int64, Int64), 1
%3 = integer_literal $Builtin.Int64, 1
%4 = struct $Int64 (%3 : $Builtin.Int64)
store %4 to %1 : $*Int64
%6 = integer_literal $Builtin.Int64, 2
%7 = struct $Int64 (%6 : $Builtin.Int64)
store %7 to %2 : $*Int64
// Read the first element from the tuple.
%9 = begin_access [read] [static] %0 : $*(Int64, Int64)
%10 = tuple_element_addr %9 : $*(Int64, Int64), 0
%11 = load %10 : $*Int64
end_access %9 : $*(Int64, Int64)
// Check that the first element is what we put in.
%13 = struct_extract %11 : $Int64, #Int64._value
%14 = builtin "cmp_eq_Int64"(%3 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
%15 = struct $Bool (%14 : $Builtin.Int1)
// Deallocate and return.
dealloc_stack %0 : $*(Int64, Int64)
return %15 : $Bool
}
sil @invokePiecewiseInitFlowSensitiveTest : $@convention(thin) () -> () {
%0 = function_ref @piecewiseInitFlowSensitive : $@convention(thin) () -> Bool
%1 = apply %0() : $@convention(thin) () -> Bool
%2 = struct_extract %1 : $Bool, #Bool._value
%3 = string_literal utf8 ""
%4 = builtin "poundAssert"(%2 : $Builtin.Int1, %3 : $Builtin.RawPointer) : $()
%ret = tuple ()
return %ret : $()
}
// Tests copy_addr interpretation.
sil @copyAddr : $@convention(thin) () -> Bool {
// Allocate an initialize an Int64 to 1.
%0 = alloc_stack $Int64
%1 = integer_literal $Builtin.Int64, 1
%2 = struct $Int64 (%1 : $Builtin.Int64)
store %2 to %0 : $*Int64
// Allocate another Int64 and copy to it.
%4 = alloc_stack $Int64
copy_addr %0 to %4 : $*Int64
// Check that the value is what we put in the original Int64.
%5 = begin_access [read] [static] %4 : $*Int64
%6 = load %5 : $*Int64
end_access %5 : $*Int64
%8 = struct_extract %6 : $Int64, #Int64._value
%9 = builtin "cmp_eq_Int64"(%1 : $Builtin.Int64, %8 : $Builtin.Int64) : $Builtin.Int1
%10 = struct $Bool (%9 : $Builtin.Int1)
// Deallocate and return.
dealloc_stack %4 : $*Int64
dealloc_stack %0 : $*Int64
return %10 : $Bool
}
sil @invokeCopyAddrTest : $@convention(thin) () -> () {
%0 = function_ref @copyAddr : $@convention(thin) () -> Bool
%1 = apply %0() : $@convention(thin) () -> Bool
%2 = struct_extract %1 : $Bool, #Bool._value
%3 = string_literal utf8 ""
%4 = builtin "poundAssert"(%2 : $Builtin.Int1, %3 : $Builtin.RawPointer) : $()
%ret = tuple ()
return %ret : $()
}
// A function with @out result to help with some tests.
sil @setInt64To1 : $@convention(thin) () -> (@out Int64) {
bb0(%0 : $*Int64):
%1 = integer_literal $Builtin.Int64, 1
%2 = struct $Int64 (%1 : $Builtin.Int64)
store %2 to %0 : $*Int64
%ret = tuple ()
return %ret : $()
}
// Tests that initialization of memory using `store` works during top-level
// evaluation.
sil @storeInitTopLevel : $@convention(thin) () -> () {
%0 = alloc_stack $Int64
%1 = integer_literal $Builtin.Int64, 1
%2 = struct $Int64 (%1 : $Builtin.Int64)
store %2 to %0 : $*Int64
%4 = load %0 : $*Int64
%5 = struct_extract %4 : $Int64, #Int64._value
%6 = builtin "cmp_eq_Int64"(%1 : $Builtin.Int64, %5 : $Builtin.Int64) : $Builtin.Int1
%7 = string_literal utf8 ""
%8 = builtin "poundAssert"(%6 : $Builtin.Int1, %7 : $Builtin.RawPointer) : $()
dealloc_stack %0 : $*Int64
%ret = tuple ()
return %ret : $()
}
// Tests that initialization of memory using `copy_addr` works during top-level
// evaluation.
sil @copyInitTopLevel : $@convention(thin) () -> () {
%0 = alloc_stack $Int64
%1 = alloc_stack $Int64
%2 = integer_literal $Builtin.Int64, 1
%3 = struct $Int64 (%2 : $Builtin.Int64)
store %3 to %0 : $*Int64
copy_addr %0 to %1 : $*Int64
%6 = load %1 : $*Int64
%7 = struct_extract %6 : $Int64, #Int64._value
%8 = builtin "cmp_eq_Int64"(%2 : $Builtin.Int64, %7 : $Builtin.Int64) : $Builtin.Int1
%9 = string_literal utf8 ""
%10 = builtin "poundAssert"(%8 : $Builtin.Int1, %9 : $Builtin.RawPointer) : $()
dealloc_stack %1 : $*Int64
dealloc_stack %0 : $*Int64
%ret = tuple ()
return %ret : $()
}
// Tests that initialization of memory using `apply` works during top-level
// evaluation.
sil @applyInitTopLevel : $@convention(thin) () -> () {
%0 = alloc_stack $Int64
%1 = function_ref @setInt64To1: $@convention(thin) () -> (@out Int64)
%2 = apply %1(%0) : $@convention(thin) () -> (@out Int64)
%3 = load %0 : $*Int64
%4 = struct_extract %3 : $Int64, #Int64._value
%5 = integer_literal $Builtin.Int64, 1
%6 = builtin "cmp_eq_Int64"(%4 : $Builtin.Int64, %5 : $Builtin.Int64) : $Builtin.Int1
%7 = string_literal utf8 ""
%8 = builtin "poundAssert"(%6 : $Builtin.Int1, %7 : $Builtin.RawPointer) : $()
dealloc_stack %0 : $*Int64
%ret = tuple ()
return %ret : $()
}
// Tests that piecewise initialization of tuple memory works during top-level
// evaluation.
sil @piecewiseInitTopLevel : $@convention(thin) () -> () {
bb0:
// Allocate and initialize the tuple to (1, 2).
%0 = alloc_stack $(Int64, Int64), var, name "tup"
%1 = tuple_element_addr %0 : $*(Int64, Int64), 0
%2 = tuple_element_addr %0 : $*(Int64, Int64), 1
%3 = integer_literal $Builtin.Int64, 1
%4 = struct $Int64 (%3 : $Builtin.Int64)
store %4 to %1 : $*Int64
%6 = integer_literal $Builtin.Int64, 2
%7 = struct $Int64 (%6 : $Builtin.Int64)
store %7 to %2 : $*Int64
// Read the first element from the tuple.
// TODO: Allow `begin_access` in top level initialization.
// %9 = begin_access [read] [static] %0 : $*(Int64, Int64)
%10 = tuple_element_addr %0 : $*(Int64, Int64), 0
%11 = load %10 : $*Int64
// end_access %9 : $*(Int64, Int64)
// Check that the first element is what we put in.
%13 = struct_extract %11 : $Int64, #Int64._value
%14 = builtin "cmp_eq_Int64"(%3 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
%15 = string_literal utf8 ""
%16 = builtin "poundAssert"(%14 : $Builtin.Int1, %15 : $Builtin.RawPointer) : $()
// Deallocate and return.
dealloc_stack %0 : $*(Int64, Int64)
%ret = tuple ()
return %ret : $()
}
// Tests that top-level evaluation detects memory that gets written to twice.
sil @doubleWriteTopLevel : $@convention(thin) () -> () {
// expected-note @+1 {{top-level value has multiple assignments}}
%0 = alloc_stack $Int64
%1 = integer_literal $Builtin.Int64, 1
%2 = struct $Int64 (%1 : $Builtin.Int64)
store %2 to %0 : $*Int64
store %2 to %0 : $*Int64
%5 = load %0 : $*Int64
%6 = struct_extract %5 : $Int64, #Int64._value
%7 = builtin "cmp_eq_Int64"(%1 : $Builtin.Int64, %6 : $Builtin.Int64) : $Builtin.Int1
%8 = string_literal utf8 ""
// expected-error @+1 {{#assert condition not constant}}
%9 = builtin "poundAssert"(%7 : $Builtin.Int1, %8 : $Builtin.RawPointer) : $()
dealloc_stack %0 : $*Int64
%ret = tuple ()
return %ret : $()
}
// There was a bug where the evaluator would not detect a double-write to a
// tuple element at the top level if one of the writes an unknown value.
sil @doubleWriteTupleElement : $@convention(thin) (Int64) -> () {
bb0(%arg : $Int64):
// Allocate and initialize the tuple to (1, 2).
%0 = alloc_stack $(Int64, Int64), var, name "tup"
%1 = tuple_element_addr %0 : $*(Int64, Int64), 0
%2 = tuple_element_addr %0 : $*(Int64, Int64), 1
%3 = integer_literal $Builtin.Int64, 1
%4 = struct $Int64 (%3 : $Builtin.Int64)
store %4 to %1 : $*Int64
%6 = integer_literal $Builtin.Int64, 2
%7 = struct $Int64 (%6 : $Builtin.Int64)
store %7 to %2 : $*Int64
// Store %arg, whose value is unknown, to the first element of the tuple.
%addr = tuple_element_addr %0 : $*(Int64, Int64), 0
store %arg to %addr : $*Int64
// Read the first element from the tuple.
// TODO: Allow `begin_access` in top level initialization.
// %9 = begin_access [read] [static] %0 : $*(Int64, Int64)
%10 = tuple_element_addr %0 : $*(Int64, Int64), 0
%11 = load %10 : $*Int64
// end_access %9 : $*(Int64, Int64)
// Check that the first element is what we put in.
%13 = struct_extract %11 : $Int64, #Int64._value
%14 = builtin "cmp_eq_Int64"(%3 : $Builtin.Int64, %13 : $Builtin.Int64) : $Builtin.Int1
%15 = string_literal utf8 ""
// expected-error @+1 {{#assert condition not constant}}
%16 = builtin "poundAssert"(%14 : $Builtin.Int1, %15 : $Builtin.RawPointer) : $()
// expected-note @-1 {{cannot evaluate expression as constant here}}
// Deallocate and return.
dealloc_stack %0 : $*(Int64, Int64)
%ret = tuple ()
return %ret : $()
}
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