carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-09-24 22:02:23 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity
Files
e023f75254bd282c643e9a55afaa0d4994eee6e7
carbon-lang/toolchain/lower/testdata/function/generic/call_method.carbon
T
Chandler Carruthandjosh11b 7871237c15 Move self to the explicit () parameter list (proposal #7016) (#7272) 
Implements proposal #7016: `self` moves from the deduced implicit list
(`fn F[self: Self]()`) to the front of the explicit list. Its type may
be written explicitly (`fn F(self: Self)`) or omitted, in which case it
defaults to `Self` (`fn F(self)`, `fn F(ref self)`); `self` in the
implicit list is rejected.

Throughout checking, `self` is modeled as the first explicit parameter.
Because a method is just a function whose first parameter is `self`, it
can also be called as an ordinary function with the receiver passed
explicitly (`Type.M(obj, ...)`), not only as `obj.M(...)`. A new
`SemIR::CallArgParamPatterns` helper chooses the parameters matched
against the explicit arguments, excluding a leading `self` only when it
is supplied as a method-call receiver; arity checking, conversion, and
generic deduction use it. The resulting SemIR and lowering are
unchanged: `self` is still `call_param0`, and witnesses, thunks, and
vtables are unaffected.

An omitted `self` type is parsed as a `SelfBindingPattern` node with no
type expression; checking synthesizes the `Self` type so it behaves
exactly like `self: Self`. However, the exact spelling used must match
between a forward declaration and a definition, following #3763's rules
around declaration matching.

Generated functions, thunks, and C++ interop import/export build `self`
as the first explicit parameter, and the `self`-type override (e.g.
Derived->Base for a virtual override) applies to the explicit `self`.
Placement is validated by new diagnostics: `SelfInImplicitParamList`,
`SelfNotFirstParam`, and `SelfOutsideParamList`. The benchmark source
generator and the documentation adopt the `(self)` shorthand; the
prelude, the examples, and the test data are migrated in the following
commits.

Assisted-by: Claude Code with Claude Opus 4.7

---------

Co-authored-by: josh11b <15258583+josh11b@users.noreply.github.com>
2026-06-10 15:30:43 +00:00

112 lines
6.1 KiB
Plaintext
Raw Blame History

// 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
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/function/generic/call_method.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/generic/call_method.carbon
class C {
fn F[T:! Core.Copy](unused self, x: T) -> T {
return x;
}
}
fn CallF() -> i32 {
var c: C = {};
var n: i32 = 0;
return c.F(n);
}
// CHECK:STDOUT: ; ModuleID = 'call_method.carbon'
// CHECK:STDOUT: source_filename = "call_method.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @C.val.loc20_3 = internal constant {} zeroinitializer
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CCallF.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %c.var = alloca {}, align 1, !dbg !8
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !8
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %c.var, ptr align 1 @C.val.loc20_3, i64 0, i1 false), !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n.var), !dbg !9
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !9
// CHECK:STDOUT: %.loc22_14 = load i32, ptr %n.var, align 4, !dbg !10
// CHECK:STDOUT: %C.F.call = call i32 @_CF.C.Main.5bd8d5767580997a(ptr %c.var, i32 %.loc22_14), !dbg !11
// CHECK:STDOUT: call void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %n.var), !dbg !9
// CHECK:STDOUT: call void @"_COp.807eb4f2d3ed7e54:core.Destroy.Core"(ptr %c.var), !dbg !8
// CHECK:STDOUT: ret i32 %C.F.call, !dbg !12
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5e27612b9dd31a14:core.Destroy.Core"(ptr %self) #0 !dbg !13 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.807eb4f2d3ed7e54:core.Destroy.Core"(ptr %self) #0 !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !25
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @_CF.C.Main.5bd8d5767580997a(ptr %self, i32 %x) #0 !dbg !26 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %x, !dbg !32
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "call_method.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "CallF", linkageName: "_CCallF.Main", scope: null, file: !3, line: 19, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !DILocation(line: 20, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 21, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 22, column: 14, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 22, column: 10, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 22, column: 3, scope: !4)
// CHECK:STDOUT: !13 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 21, type: !14, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
// CHECK:STDOUT: !14 = !DISubroutineType(types: !15)
// CHECK:STDOUT: !15 = !{null, !7}
// CHECK:STDOUT: !16 = !{!17}
// CHECK:STDOUT: !17 = !DILocalVariable(arg: 1, scope: !13, type: !7)
// CHECK:STDOUT: !18 = !DILocation(line: 21, column: 3, scope: !13)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Op", linkageName: "_COp.807eb4f2d3ed7e54:core.Destroy.Core", scope: null, file: !3, line: 20, type: !20, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !23)
// CHECK:STDOUT: !20 = !DISubroutineType(types: !21)
// CHECK:STDOUT: !21 = !{null, !22}
// CHECK:STDOUT: !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !23 = !{!24}
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !19, type: !22)
// CHECK:STDOUT: !25 = !DILocation(line: 20, column: 3, scope: !19)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "F", linkageName: "_CF.C.Main.5bd8d5767580997a", scope: null, file: !3, line: 14, type: !27, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !29)
// CHECK:STDOUT: !27 = !DISubroutineType(types: !28)
// CHECK:STDOUT: !28 = !{!7, !22, !7}
// CHECK:STDOUT: !29 = !{!30, !31}
// CHECK:STDOUT: !30 = !DILocalVariable(arg: 1, scope: !26, type: !22)
// CHECK:STDOUT: !31 = !DILocalVariable(arg: 2, scope: !26, type: !7)
// CHECK:STDOUT: !32 = !DILocation(line: 15, column: 5, scope: !26)
Reference in New Issue View Git Blame Copy Permalink