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Add form to Function (#6561)

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... and use the form to implement support for `ref` returns.
This commit is contained in:
Geoff Romer
2026-01-08 18:55:53 +00:00
committed by GitHub
parent 28b01118d0
commit 11d407b4a0
24 changed files with 1554 additions and 1319 deletions
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toolchain/check/testdata/function/declaration/import.carbon
Vendored
+2 -2
View File
@@ -886,19 +886,19 @@ import library "extern_api";
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.501: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %.49e: form = init_form %i32, call_param1 [concrete]
// CHECK:STDOUT: %C.type: type = fn_type @C [concrete]
// CHECK:STDOUT: %C: %C.type = struct_value () [concrete]
// CHECK:STDOUT: %struct_type.c: type = struct_type {.c: %i32} [concrete]
// CHECK:STDOUT: %pattern_type.f5f: type = pattern_type %struct_type.c [concrete]
// CHECK:STDOUT: %tuple.type.dd4: type = tuple_type (%i32) [concrete]
// CHECK:STDOUT: %.407: form = init_form %struct_type.c, call_param1 [concrete]
// CHECK:STDOUT: %D.type: type = fn_type @D [concrete]
// CHECK:STDOUT: %D: %D.type = struct_value () [concrete]
// CHECK:STDOUT: %E.type: type = fn_type @E [concrete]
// CHECK:STDOUT: %E: %E.type = struct_value () [concrete]
// CHECK:STDOUT: %.49e: form = init_form %i32, call_param1 [concrete]
// CHECK:STDOUT: %tuple.type.85c: type = tuple_type (type) [concrete]
// CHECK:STDOUT: %tuple.38e: %tuple.type.85c = tuple_value (%i32) [concrete]
// CHECK:STDOUT: %.407: form = init_form %struct_type.c, call_param1 [concrete]
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
// CHECK:STDOUT: %pattern_type.cb1: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
toolchain/check/testdata/function/declaration/ref.carbon
Vendored
+61 -5
View File
@@ -11,14 +11,70 @@
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/declaration/ref.carbon
// --- fail_todo_ref_return.carbon
// --- ref_return.carbon
//@include-in-dumps
fn F() -> ref i32;
fn G() {
// CHECK:STDERR: fail_todo_ref_return.carbon:[[@LINE+4]]:20: error: cannot bind durable reference to non-reference value of type `i32` [ConversionFailureNonRefToRef]
// CHECK:STDERR: let ref x: i32 = F();
// CHECK:STDERR: ^~~
// CHECK:STDERR:
let ref x: i32 = F();
}
// CHECK:STDOUT: --- ref_return.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %.cf3: form = ref_form %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
// CHECK:STDOUT: %G: %G.type = struct_value () [concrete]
// CHECK:STDOUT: %pattern_type.7ce: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: .G = %G.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %.loc4_11.1: type = ref_tag %i32
// CHECK:STDOUT: %.loc4_11.2: form = ref_form %i32 [concrete = constants.%.cf3]
// CHECK:STDOUT: }
// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F();
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %x.patt: %pattern_type.7ce = ref_binding_pattern x [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
// CHECK:STDOUT: %F.call: ref %i32 = call %F.ref()
// CHECK:STDOUT: %.loc7: type = splice_block %i32 [concrete = constants.%i32] {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: }
// CHECK:STDOUT: %x: ref %i32 = ref_binding x, %F.call
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: