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// RUN: %target-swift-frontend -primary-file %s -O -module-name=test -disable-llvm-optzns -emit-ir | %FileCheck %s
enum NoPayload {
case E0
case E1
case E2
case E3
}
// Check if the code of a select_num is a simple int cast and not a switch.
// CHECK-LABEL: define {{.*}}selectDirect
// CHECK: %1 = zext i8 %0 to i32
// CHECK: ret i32 %1
@inline(never)
func selectDirect(e: NoPayload) -> Int32 {
switch e {
case .E0:
return 0
case .E1:
return 1
case .E2:
return 2
case .E3:
return 3
}
}
// CHECK-LABEL: define {{.*}}selectNegOffset
// CHECK: %1 = zext i8 %0 to i32
// CHECK: %2 = add i32 %1, -6
// CHECK: ret i32 %2
@inline(never)
func selectNegOffset(e: NoPayload) -> Int32 {
switch e {
case .E0:
return -6
case .E1:
return -5
case .E2:
return -4
case .E3:
return -3
}
}
// CHECK-LABEL: define {{.*}}selectPosOffset
// CHECK: %1 = zext i8 %0 to i32
// CHECK: %2 = add i32 %1, 3
// CHECK: ret i32 %2
@inline(never)
func selectPosOffset(e: NoPayload) -> Int32 {
switch e {
case .E0:
return 3
case .E1:
return 4
case .E2:
return 5
case .E3:
return 6
}
}
// Following functions contain select_enums, which cannot be generated as a
// simple conversion.
// CHECK-LABEL: define {{.*}}selectWithDefault
// CHECK: switch i8
// CHECK: ret
@inline(never)
func selectWithDefault(e: NoPayload) -> Int32 {
switch e {
case .E0:
return 0
case .E1:
return 1
default:
return 2
}
}
// CHECK-LABEL: define {{.*}}selectNonContiguous
// CHECK: switch i8
// CHECK: ret
@inline(never)
func selectNonContiguous(e: NoPayload) -> Int32 {
switch e {
case .E0:
return 0
case .E1:
return 1
case .E2:
return 3
case .E3:
return 4
}
}
var gg : Int32 = 10
// CHECK-LABEL: define {{.*}}selectNonConstant
// CHECK: switch i8
// CHECK: ret
@inline(never)
func selectNonConstant(e: NoPayload) -> Int32 {
switch e {
case .E0:
return 0
case .E1:
return 1
case .E2:
return gg
case .E3:
return 4
}
}
// CHECK-LABEL: define {{.*}}selectTuple
// CHECK: switch i8
// CHECK: ret
@inline(never)
func selectTuple(e: NoPayload) -> (Int32, Int32) {
switch e {
case .E0:
return (0, 1)
case .E1:
return (1, 2)
case .E2:
return (2, 3)
case .E3:
return (3, 4)
}
}
// CHECK-LABEL: define {{.*}}selectNonInt
// CHECK: switch i8
// CHECK: ret
@inline(never)
func selectNonInt(e: NoPayload) -> String {
switch e {
case .E0:
return "a"
case .E1:
return "ab"
case .E2:
return "abc"
case .E3:
return "abcd"
}
}
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