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// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -module-name main -emit-sil -o %t/output.sil %s -O \
// RUN: -enable-noreturn-prediction \
// RUN: -enable-throws-prediction \
// RUN: -Xllvm --debug-only=cold-block-info 2> %t/debug.txt
// RUN: %FileCheck %s --input-file=%t/debug.txt \
// RUN: --implicit-check-not 'converged after {{[3-9]}} iters'
// REQUIRES: asserts
public enum MyError: Error { case err; case number(Int) }
@inline(never)
func dump(_ s: String) { print(s) }
@inline(never)
func random() -> Int { return Int.random(in: 0..<1024) }
@inline(never)
func listenForConnections() -> Never {
while true {
dump("listening!")
}
}
// CHECK-LABEL: --> Final for $s4main14createLauncheryyF
// CHECK: {
// CHECK-NEXT: $s4main14createLauncheryyF::bb0 -> cold
// CHECK-NEXT: STATISTICS: warm 0 | cold 1
// CHECK-NEXT: }
public func createLauncher() {
dump("getting ready!")
listenForConnections()
}
// CHECK-LABEL: --> Final for $s4main6goBoomyS2iSgF
// CHECK: {
// CHECK-NEXT: $s4main6goBoomyS2iSgF::bb1 -> cold
// CHECK-NEXT: STATISTICS: warm 0 | cold 1
// CHECK-NEXT: }
public func goBoom(_ i: Int?) -> Int {
return i!
}
// CHECK-LABEL: --> Stopping early in $s4main19goBoom_preconditionyySbF
public func goBoom_precondition(_ b: Bool) {
// NOTE: cond_fail instructions from preconditions aren't terminators,
// so there's nothing cold in this function!
precondition(b)
var x = random()
precondition(x >= 0)
if (x > 100) {
x = 0
}
for i in 0..<x {
precondition(i <= 100)
dump(i)
}
}
// CHECK-LABEL: --> Final for $s4main17goBoom_fatalErroryySiF
// CHECK: {
// CHECK-DAG: $s4main17goBoom_fatalErroryySiF::bb1 -> cold
// CHECK-DAG: $s4main17goBoom_fatalErroryySiF::bb0 -> cold
// CHECK-DAG: $s4main17goBoom_fatalErroryySiF::bb3 -> cold
// CHECK-DAG: $s4main17goBoom_fatalErroryySiF::bb2 -> cold
// CHECK-NEXT: STATISTICS: warm 0
// CHECK: }
public func goBoom_fatalError(_ i: Int) {
for i in 0..<i {
dump("do something")
}
fatalError("kablam")
}
// CHECK-LABEL: --> Final for $s4main13sirThrowsALotyS2iKF
// CHECK: {
// CHECK-DAG: $s4main13sirThrowsALotyS2iKF::bb3 -> cold
// CHECK-DAG: $s4main13sirThrowsALotyS2iKF::bb2 -> cold
// CHECK-DAG: $s4main13sirThrowsALotyS2iKF::bb4 -> cold
// CHECK-DAG: $s4main13sirThrowsALotyS2iKF::bb5 -> cold
// CHECK-NEXT: STATISTICS: warm 0
// CHECK: }
@inline(never)
public func sirThrowsALot(_ i: Int) throws -> Int {
dump("entry")
switch i {
case 0:
dump("case 0")
return random()
case 1:
dump("case 1")
throw MyError.err
default:
dump("case n")
throw MyError.number(i)
}
}
// CHECK-LABEL: --> Final for $s4main22catchTheseThrowsSimpleyS2iF
// CHECK: {
// CHECK-DAG: $s4main22catchTheseThrowsSimpleyS2iF::bb1 -> warm
// CHECK-DAG: $s4main22catchTheseThrowsSimpleyS2iF::bb2 -> cold
// CHECK: }
public func catchTheseThrowsSimple(_ i: Int) -> Int {
if let ans = try? sirThrowsALot(i) {
return ans
} else {
dump("did throw!")
return random()
}
}
// Make sure there's at least 3 cold blocks and no warm ones.
// Inlining and multiple runs of the analysis, and especially platform
// differences, can yield different numbers of blocks being analyzed!
// CHECK-LABEL: --> Final for $s4main012pleasePleaseC0yySiKF
// CHECK-COUNT-3: -> cold
// CHECK: STATISTICS: warm 0
// CHECK: }
public func pleasePleasePlease(_ i: Int) throws {
if i > random() {
fatalError("oof")
} else {
throw MyError.number(i)
}
}
// CHECK-LABEL: --> Final for $s4main21nestedTreesOfThrowingyySi_S3itAA7MyErrorOYKF
// CHECK-NOT: bb0
// CHECK: }
public func nestedTreesOfThrowing(_ i: Int, _ j: Int, _ k: Int, _ l: Int) throws(MyError) {
switch i {
case 0:
switch j {
case 0:
switch k {
case 0:
switch l {
case 0: throw MyError.number(0)
case 1: throw MyError.number(1)
default: return // <-- the one non-throwing case that prevents bb0 from being cold!
}
case 1:
switch l {
case 0: throw MyError.number(1)
case 1: throw MyError.number(2)
default: throw MyError.err
}
default:
throw MyError.err
}
case 1:
switch k {
case 0:
switch l {
case 0: throw MyError.number(1)
case 1: throw MyError.number(2)
default: throw MyError.err
}
case 1:
switch l {
case 0: throw MyError.number(2)
case 1: throw MyError.number(3)
default: throw MyError.err
}
default:
throw MyError.err
}
default:
throw MyError.err
}
case 1:
switch j {
case 0:
switch k {
case 0:
switch l {
case 0: throw MyError.number(1)
case 1: throw MyError.number(2)
default: throw MyError.err
}
case 1:
switch l {
case 0: throw MyError.number(2)
case 1: throw MyError.number(3)
default: throw MyError.err
}
default:
throw MyError.err
}
case 1:
switch k {
case 0:
switch l {
case 0: throw MyError.number(2)
case 1: throw MyError.number(3)
default: throw MyError.err
}
case 1:
switch l {
case 0: throw MyError.number(3)
case 1: throw MyError.number(4)
default: throw MyError.err
}
default:
throw MyError.err
}
default:
throw MyError.err
}
default:
throw MyError.err
}
}
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