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https://github.com/carbon-language/carbon-lang.git
synced 2026-10-03 22:02:51 +01:00
David Blaikie
67b287a2f2
There's not much mangling happening yet - but Run -> main (and some overloading numbering happening, maybe LLVM is doing that 'helpfully' under the hood?) is enough to demonstrate this improvement/fix. Ah, here it is: ``` #0 llvm::ValueSymbolTable::makeUniqueName (this=0x50287fe5b6c0, V=0x50287fe827e8, UniqueName="F") at external/_main~llvm_project~llvm-project/llvm/lib/IR/ValueSymbolTable.cpp:45 #1 0x000055555c40f964 in llvm::ValueSymbolTable::reinsertValue (this=0x50287fe5b6c0, V=0x50287fe827e8) at external/_main~llvm_project~llvm-project/llvm/lib/IR/ValueSymbolTable.cpp:100 #2 0x000055555c2a91df in llvm::SymbolTableListTraits<llvm::Function>::addNodeToList (this=0x50287fd16f18, V=0x50287fe827e8) at external/_main~llvm_project~llvm-project/llvm/lib/IR/SymbolTableListTraitsImpl.h:75 #3 0x000055555c2a90e5 in llvm::iplist_impl<llvm::simple_ilist<llvm::Function>, llvm::SymbolTableListTraits<llvm::Function> >::insert (this=0x50287fd16f18, where=..., New=0x50287fe827e8) at external/_main~llvm_project~llvm-project/llvm/include/llvm/ADT/ilist.h:166 #4 0x000055555c27fef2 in llvm::iplist_impl<llvm::simple_ilist<llvm::Function>, llvm::SymbolTableListTraits<llvm::Function> >::push_back (this=0x50287fd16f18, val=0x50287fe827e8) at external/_main~llvm_project~llvm-project/llvm/include/llvm/ADT/ilist.h:250 #5 0x000055555c27faeb in llvm::Function::Function (this=0x50287fe827e8, Ty=0x50287fd43058, Linkage=llvm::GlobalValue::ExternalLinkage, AddrSpace=0, name="F", ParentModule=0x50287fd16f00) at external/_main~llvm_project~llvm-project/llvm/lib/IR/Function.cpp:521 #6 0x0000555559441f95 in llvm::Function::Create (Ty=0x50287fd43058, Linkage=llvm::GlobalValue::ExternalLinkage, AddrSpace=0, N="F", M=0x50287fd16f00) at external/_main~llvm_project~llvm-project/llvm/include/llvm/IR/Function.h:175 #7 0x000055555c27ebac in llvm::Function::Create (Ty=0x50287fd43058, Linkage=llvm::GlobalValue::ExternalLinkage, N="F", M=...) at external/_main~llvm_project~llvm-project/llvm/lib/IR/Function.cpp:398 #8 0x0000555558ce7bb5 in Carbon::Lower::FileContext::BuildFunctionDecl (this=0x7fffffffc438, function_id=...) at toolchain/lower/file_context.cpp:257 ``` That's where LLVM decides to make a new name (name.number) when asked to create a new global with the same name as an existing global. It's not a valid mangling scheme - since the name won't be stable between different compilations, but it is enough to make single-compilation code build/run for now.
57 lines
2.3 KiB
Plaintext
57 lines
2.3 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/impl/instance_method.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/impl/instance_method.carbon
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class A;
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interface GetSelf {
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fn Get[addr self: Self*]() -> Self*;
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}
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class A {
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extend impl as GetSelf {
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fn Get[addr self: Self*]() -> Self* {
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return self;
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}
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}
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}
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fn Call(a: A*) -> A* {
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return (*a).Get();
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}
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// CHECK:STDOUT: ; ModuleID = 'instance_method.carbon'
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// CHECK:STDOUT: source_filename = "instance_method.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define ptr @Get(ptr %self) !dbg !4 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: ret ptr %self, !dbg !7
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: define ptr @Call(ptr %a) !dbg !8 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %Get.call = call ptr @Get(ptr %a), !dbg !9
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// CHECK:STDOUT: ret ptr %Get.call, !dbg !10
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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: "instance_method.carbon", directory: "")
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// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Get", linkageName: "Get", scope: null, file: !3, line: 19, 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: 20, column: 7, scope: !4)
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// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "Call", linkageName: "Call", scope: null, file: !3, line: 25, type: !5, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !9 = !DILocation(line: 26, column: 10, scope: !8)
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// CHECK:STDOUT: !10 = !DILocation(line: 26, column: 3, scope: !8)
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