// RUN: %target-swift-frontend -primary-file %s -emit-ir -g -o %t.ll
// RUN: FileCheck %s < %t.ll
// RUN: FileCheck --check-prefix=CHECK-SCOPES %s < %t.ll
// RUN: %target-swift-frontend -emit-sil -emit-verbose-sil -primary-file %s -o - | FileCheck %s --check-prefix=SIL-CHECK

func markUsed<T>(t: T) {}

func classifyPoint2(p: (Double, Double)) {
    func return_same (var input : Double) -> Double
    {
        return input; // return_same gets called in both where statements
    }


    switch p {
        case (0, 0):
          markUsed("origin")
        case (0, _):
          markUsed("on the Y axis")
          markUsed("(0, \(p.1)) is on the y-axis")
        case (_, 0):
          markUsed("on the X axis")
        case (var x, var y) where
          // CHECK:   call double {{.*}}return_same{{.*}}, !dbg ![[LOC1:.*]]
          // CHECK: br {{.*}}, label {{.*}}, label {{.*}}, !dbg ![[LOC2:.*]]
          // CHECK: builtinStringLiteral{{.*}}, !dbg ![[LOC3:.*]]
          // CHECK: ![[LOC1]] = !DILocation(line: [[@LINE+2]],
          // CHECK: ![[LOC2]] = !DILocation(line: [[@LINE+1]],
                            return_same(x) == return_same(y):
          // CHECK: ![[LOC3]] = !DILocation(line: [[@LINE+1]],
          markUsed("(\(x), \(y)) is on the + diagonal")
          // SIL-CHECK:  dealloc_stack{{.*}}line:[[@LINE-1]]:55:cleanup
          // Verify that the branch has a location >= the cleanup.
          // SIL-CHECK-NEXT:  br{{.*}}line:[[@LINE-3]]:55:cleanup
        case (var x, var y) where x == -y:
          // Verify that all variables end up in the appropriate scopes.
          // CHECK-SCOPES: !DILocalVariable(tag: DW_TAG_auto_variable, name: "x", scope: ![[SCOPE1:[0-9]+]],{{.*}} line: [[@LINE-2]]
          // CHECK-SCOPES: ![[SCOPE1]] = distinct !DILexicalBlock(
          markUsed("on the - diagonal")
        case (var x, var y) where x >= -10 && x < 10 && y >= -10 && y < 10:
          // CHECK-SCOPES: !DILocalVariable(tag: DW_TAG_auto_variable, name: "x", scope: ![[SCOPE2:[0-9]+]],{{.*}} line: [[@LINE-1]]
          // CHECK-SCOPES: ![[SCOPE2]] = distinct !DILexicalBlock(
          markUsed("near the origin")
        case (var x, var y):
          // CHECK-SCOPES: !DILocalVariable(tag: DW_TAG_auto_variable, name: "x", scope: ![[SCOPE3:[0-9]+]],{{.*}} line: [[@LINE-1]]
          // CHECK-SCOPES: ![[SCOPE3]] = distinct !DILexicalBlock(
          markUsed("sqrt(\(x*x + y*y)) units from the origin")
        }
  // CHECK: !DILocation(line: [[@LINE+1]],
    }