Files
carbon-lang/toolchain/check/testdata/if_expr/control_flow.carbon
T
Jon Ross-PerkinsandRichard Smith 76ed3c73cb Promote FunctionType to a standard instruction. (#3931)
This removes the builtin FunctionType, replacing it with a FunctionType
instruction. The constant for a FunctionDecl is now a StructValue with
type of FunctionType.

Note this means a function declaration produces _both_ a type, and a
value of the type. This has some consequences in terms of circularity,
and makes the importing of function declarations a little more complex.

It'll get particularly peculiar for imports because of the behavior of
the reference, but that's a known issue due to other things such as
`alias`. The impact will hopefully be contained to
ResolvePrevInstForMerge (and ImportRefs).

To note a small formatting change in diagnostics:

```
-  // CHECK:STDERR: fail_member_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated <function> in Interface>` is not callable.
+  // CHECK:STDERR: fail_member_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated F in Interface>` is not callable.

-  // CHECK:STDERR: fail_todo_facet_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated <function> in Interface>` is not callable.
+  // CHECK:STDERR: fail_todo_facet_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated F in Interface>` is not callable.
```

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2024-05-03 15:18:04 +00:00

85 lines
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
fn A() -> i32 { return 1; }
fn B() -> i32 { return 2; }
fn F(b: bool) -> i32 {
return if b then A() else B();
}
// CHECK:STDOUT: --- control_flow.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %A: type = fn_type @A [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %struct.1: A = struct_value () [template]
// CHECK:STDOUT: %.2: i32 = int_literal 1 [template]
// CHECK:STDOUT: %B: type = fn_type @B [template]
// CHECK:STDOUT: %struct.2: B = struct_value () [template]
// CHECK:STDOUT: %.3: i32 = int_literal 2 [template]
// CHECK:STDOUT: %F: type = fn_type @F [template]
// CHECK:STDOUT: %struct.3: F = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .A = %A.decl
// CHECK:STDOUT: .B = %B.decl
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core: <namespace> = namespace [template] {}
// CHECK:STDOUT: %A.decl: A = fn_decl @A [template = constants.%struct.1] {
// CHECK:STDOUT: @A.%return: ref i32 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %B.decl: B = fn_decl @B [template = constants.%struct.2] {
// CHECK:STDOUT: @B.%return: ref i32 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %F.decl: F = fn_decl @F [template = constants.%struct.3] {
// CHECK:STDOUT: %b.loc10_6.1: bool = param b
// CHECK:STDOUT: @F.%b: bool = bind_name b, %b.loc10_6.1
// CHECK:STDOUT: @F.%return: ref i32 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @A() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %.loc7: i32 = int_literal 1 [template = constants.%.2]
// CHECK:STDOUT: return %.loc7
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @B() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %.loc8: i32 = int_literal 2 [template = constants.%.3]
// CHECK:STDOUT: return %.loc8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%b: bool) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %b.ref: bool = name_ref b, %b
// CHECK:STDOUT: if %b.ref br !if.expr.then else br !if.expr.else
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.then:
// CHECK:STDOUT: %A.ref: A = name_ref A, file.%A.decl [template = constants.%struct.1]
// CHECK:STDOUT: %A.call: init i32 = call %A.ref()
// CHECK:STDOUT: %.loc11_21.1: i32 = value_of_initializer %A.call
// CHECK:STDOUT: %.loc11_21.2: i32 = converted %A.call, %.loc11_21.1
// CHECK:STDOUT: br !if.expr.result(%.loc11_21.2)
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.else:
// CHECK:STDOUT: %B.ref: B = name_ref B, file.%B.decl [template = constants.%struct.2]
// CHECK:STDOUT: %B.call: init i32 = call %B.ref()
// CHECK:STDOUT: %.loc11_24.1: i32 = value_of_initializer %B.call
// CHECK:STDOUT: %.loc11_24.2: i32 = converted %B.call, %.loc11_24.1
// CHECK:STDOUT: br !if.expr.result(%.loc11_24.2)
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.result:
// CHECK:STDOUT: %.loc11_10: i32 = block_arg !if.expr.result
// CHECK:STDOUT: return %.loc11_10
// CHECK:STDOUT: }
// CHECK:STDOUT: