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a548eff0bb
This seems to be enough to avoid naming collisions for functions in any of the current test cases (verified by asserting that the name of the `llvm::Function` matches the name passed to create it - not triggering LLVM's numbering that happens when names collide) It currently implements mangling for namespace scopes, class scopes, and impls. Nothing generic is mangled yet - haven't looked at how that works, though evidently it's not covered by existing testing, I guess. Follow-up change will document the current mangling algorithm in `toolchain/docs/lower.md` --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com> Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
69 lines
3.3 KiB
Plaintext
69 lines
3.3 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/class/field.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/class/field.carbon
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class C {
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var a: i32;
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var b: C*;
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}
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fn F(c: C) -> i32 {
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return (*c.b).a;
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}
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fn Run() -> i32 {
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var c: C;
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c.a = 1;
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c.b = &c;
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return F(c);
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}
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// CHECK:STDOUT: ; ModuleID = 'field.carbon'
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// CHECK:STDOUT: source_filename = "field.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i32 @_CF.Main(ptr %c) !dbg !4 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %.loc17_13.1.b = getelementptr inbounds nuw { i32, ptr }, ptr %c, i32 0, i32 1, !dbg !7
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// CHECK:STDOUT: %.loc17_13.2 = load ptr, ptr %.loc17_13.1.b, align 8, !dbg !7
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// CHECK:STDOUT: %.loc17_16.1.a = getelementptr inbounds nuw { i32, ptr }, ptr %.loc17_13.2, i32 0, i32 0, !dbg !8
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// CHECK:STDOUT: %.loc17_16.2 = load i32, ptr %.loc17_16.1.a, align 4, !dbg !8
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// CHECK:STDOUT: ret i32 %.loc17_16.2, !dbg !9
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i32 @main() !dbg !10 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %c.var = alloca { i32, ptr }, align 8, !dbg !11
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// CHECK:STDOUT: %.loc22_4.a = getelementptr inbounds nuw { i32, ptr }, ptr %c.var, i32 0, i32 0, !dbg !12
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// CHECK:STDOUT: store i32 1, ptr %.loc22_4.a, align 4, !dbg !12
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// CHECK:STDOUT: %.loc23_4.b = getelementptr inbounds nuw { i32, ptr }, ptr %c.var, i32 0, i32 1, !dbg !13
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// CHECK:STDOUT: store ptr %c.var, ptr %.loc23_4.b, align 8, !dbg !13
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// CHECK:STDOUT: %F.call = call i32 @_CF.Main(ptr %c.var), !dbg !14
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// CHECK:STDOUT: ret i32 %F.call, !dbg !15
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !3 = !DIFile(filename: "field.carbon", directory: "")
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// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 16, type: !5, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
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// CHECK:STDOUT: !6 = !{}
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// CHECK:STDOUT: !7 = !DILocation(line: 17, column: 12, scope: !4)
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// CHECK:STDOUT: !8 = !DILocation(line: 17, column: 10, scope: !4)
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// CHECK:STDOUT: !9 = !DILocation(line: 17, column: 3, scope: !4)
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// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !11 = !DILocation(line: 21, column: 7, scope: !10)
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// CHECK:STDOUT: !12 = !DILocation(line: 22, column: 3, scope: !10)
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// CHECK:STDOUT: !13 = !DILocation(line: 23, column: 3, scope: !10)
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// CHECK:STDOUT: !14 = !DILocation(line: 24, column: 10, scope: !10)
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// CHECK:STDOUT: !15 = !DILocation(line: 24, column: 3, scope: !10)
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