Group the the code coverage, profiling, and pgo tests together (#16070)

* Group tests for profiling instrumentation together, NFC

This will make it easier to test changes to the code coverage logic.

There are a handful of tests which relate to profiling which I have not
moved. These include tests for the driver and for the SIL optimizer. It
makes more sense to keep those tests where they are.

* Rename a test file, NFC

This file tests code coverage of primary files, so I've changed the name
of the file to reflect that.

* Simplify the check lines in a test, NFC

This file tests code coverage of closures. It had several check lines
which obscured the meaning of the test, and its check lines were in a
strange order.

Remove the extra checks and disable -emit-sorted-sil.

test/Profiler/coverage_while.swift

@@ -0,0 +1,129 @@
+// RUN: %target-swift-frontend -Xllvm -sil-full-demangle -suppress-warnings -profile-generate -profile-coverage-mapping -emit-sorted-sil -emit-sil -module-name coverage_while %s | %FileCheck %s
+
+// CHECK-LABEL: // coverage_while.eoo() -> ()
+func eoo() {
+  // CHECK: int_instrprof_increment
+  var x : Int32 = 0
+
+  repeat {
+    // CHECK: int_instrprof_increment
+    // CHECK: sadd_with_overflow_Int32
+    x += 1
+    // CHECK: cmp_slt_Int32
+  } while x < 10
+}
+
+// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_while.foo
+func foo() -> Int32 {
+  var x : Int32 = 0
+  // CHECK: [[@LINE+1]]:9 -> [[@LINE+1]]:17 : (0 + 1)
+  while (x < 10) {
+    x += 1
+  }
+
+  // CHECK: [[@LINE+1]]:9 -> [[@LINE+1]]:22 : (0 + 2)
+  while ((x - 1) > 0) {
+    x -= 1
+    if (x % 2 == 0) { continue }
+  }
+
+  // CHECK: [[@LINE+1]]:9 -> [[@LINE+1]]:18 : ((0 + 4) - 5)
+  while (x < 100) {
+    x += 1
+    if (x == 10) { break }
+  }
+
+  // CHECK: [[@LINE+1]]:9 -> [[@LINE+1]]:18 : ((0 + 6) - 9)
+  while (x < 100) {
+    x += 1
+    while (true) { break }
+    if (x % 2 == 0) { continue }
+    // CHECK: [[@LINE-1]]:33 -> [[@LINE+2]]:4 : (6 - 8)
+    if (x > 30) { break }
+  }
+
+  // CHECK: [[@LINE+1]]:10 -> [[@LINE+4]]:4 : 10
+  repeat {
+    x -= 1
+    // CHECK: [[@LINE+1]]:11 -> [[@LINE+1]]:16 : 10
+  } while x > 0
+
+  // CHECK: [[@LINE+1]]:9 -> [[@LINE+1]]:18 : ((0 + 11) - 12)
+  while (x < 100) {
+    if (x == 40) { // CHECK: [[@LINE]]:18 -> [[@LINE+2]]:6 : 12
+      return x
+    }
+    x += 1
+  }
+
+  var y : Int32? = 2
+  // CHECK: [[@LINE+1]]:9 -> [[@LINE+1]]:15 : ((0 + 13) - 12)
+  while x > 30, let _ = y {
+    y = nil
+  }
+
+  // TODO: [[@LINE+1]]:9 -> [[@LINE+1]]:18 : ((0 + 14) - 12)
+  while let _ = y {
+  }
+  // CHECK: [[@LINE-1]]:4 -> [[@LINE+1]]:11 : (0 - 12)
+  return x
+}
+
+// rdar://problem/24572268
+// CHECK-LABEL: sil_coverage_map {{.*}}// coverage_while.goo
+func goo() {
+  var x : Int32 = 0
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+2]]:4 : [[RWS1:[0-9]+]]
+    x += 1
+  } while x < 10 // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:17 : [[RWS1]]
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+5]]:4 : [[RWS2:[0-9]+]]
+    x += 1
+    if (x % 2 == 0) { // CHECK-DAG: [[@LINE]]:21 -> [[@LINE+2]]:6 : [[CONT1:[0-9]+]]
+      continue
+    } // CHECK-DAG: [[@LINE]]:6 -> [[@LINE+1]]:4 : ([[RWS2]] - [[CONT1]])
+  } while x < 20 // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:17 : [[RWS2]]
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+5]]:4 : [[RWS3:[0-9]+]]
+    x += 1
+    if (x % 2 == 0) { // CHECK-DAG: [[@LINE]]:21 -> [[@LINE+2]]:6 : [[BRK1:[0-9]+]]
+      break
+    } // CHECK-DAG: [[@LINE]]:6 -> [[@LINE+1]]:4 : ([[RWS3]] - [[BRK1]])
+  } while x < 30 // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:17 : ([[RWS3]] - [[BRK1]])
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+10]]:4 : [[RWS4:[0-9]+]]
+    x += 1
+    if (x % 2 == 0) { // CHECK-DAG: [[@LINE]]:21 -> [[@LINE+2]]:6 : [[CONT2:[0-9]+]]
+      continue
+    } // CHECK-DAG: [[@LINE]]:6 -> [[@LINE+6]]:4 : ([[RWS4]] - [[CONT2]])
+    x += 1
+    if (x % 7 == 0) { // CHECK-DAG: [[@LINE]]:21 -> [[@LINE+2]]:6 : [[BRK2:[0-9]+]]
+      break
+    } // CHECK-DAG: [[@LINE]]:6 -> [[@LINE+2]]:4 : (([[RWS4]] - [[CONT2]]) - [[BRK2]])
+    x += 1
+  } while x < 40 // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:17 : ([[RWS4]] - [[BRK2]])
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+1]]:4 : [[RWS5:[0-9]+]]
+  } while false // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:16 : [[RWS5]]
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+4]]:4 : [[RWS6:[0-9]+]]
+    repeat { // CHECK-DAG: [[@LINE]]:12 -> [[@LINE+2]]:6 : [[RWS7:[0-9]+]]
+      return
+    } while false // CHECK-DAG: [[@LINE]]:13 -> [[@LINE]]:18 : zero
+  } while false // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:16 : ([[RWS6]] - [[RWS7]])
+
+  repeat { // CHECK-DAG: [[@LINE]]:10 -> [[@LINE+6]]:4 : [[RWS8:[0-9]+]]
+    repeat { // CHECK-DAG: [[@LINE]]:12 -> [[@LINE+4]]:6 : [[RWS9:[0-9]+]]
+      if (true) { // CHECK-DAG: [[@LINE]]:17 -> [[@LINE+2]]:8 : [[RET1:[0-9]+]]
+        return
+      }
+    } while false // CHECK-DAG: [[@LINE]]:13 -> [[@LINE]]:18 : ([[RWS9]] - [[RET1]])
+  } while false // CHECK-DAG: [[@LINE]]:11 -> [[@LINE]]:16 : ([[RWS8]] - [[RET1]])
+
+  // TODO(vsk): need tests for fail and throw statements.
+}
+
+eoo()
+foo()
+goo()