mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 22:02:52 +01:00
David Blaikie
bb9942823f
This helps at least lldb handle calling functions (currently the debug
info describes every function as `void()`, so no parameters or return
values are supported) - seems gdb and lldb both depend on demangling to
varying degrees in C code (marking a function as "prototyped" in C in
DWARF does seem to also address this problem).
Given:
```
fn PrintThree() {
Core.Print(3);
}
```
Before:
```
(lldb) p PrintThree()
error: Couldn't look up symbols:
PrintThree
Hint: The expression tried to call a function that is not present in
the target, perhaps because it was optimized out by the compiler.
```
After:
```
(lldb) p PrintThree()
3
(lldb)
```
51 lines
2.1 KiB
Plaintext
51 lines
2.1 KiB
Plaintext
// 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/declaration/simple.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/declaration/simple.carbon
|
|
|
|
fn F(n: i32);
|
|
|
|
fn G(n: i32) { F(n); }
|
|
|
|
class A;
|
|
fn H(n: A);
|
|
fn I() -> A;
|
|
|
|
// CHECK:STDOUT: ; ModuleID = 'simple.carbon'
|
|
// CHECK:STDOUT: source_filename = "simple.carbon"
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: declare void @_CF.Main(i32)
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: ; Function Attrs: nounwind
|
|
// CHECK:STDOUT: define void @_CG.Main(i32 %n) #0 !dbg !4 {
|
|
// CHECK:STDOUT: entry:
|
|
// CHECK:STDOUT: call void @_CF.Main(i32 %n), !dbg !7
|
|
// CHECK:STDOUT: ret void, !dbg !8
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: declare void @_CH.Main()
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: declare void @_CI.Main()
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: attributes #0 = { nounwind }
|
|
// 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: "simple.carbon", directory: "")
|
|
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 15, type: !5, spFlags: DISPFlagDefinition, unit: !2)
|
|
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
|
|
// CHECK:STDOUT: !6 = !{}
|
|
// CHECK:STDOUT: !7 = !DILocation(line: 15, column: 16, scope: !4)
|
|
// CHECK:STDOUT: !8 = !DILocation(line: 15, column: 1, scope: !4)
|