mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +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.
47 lines
2.4 KiB
Plaintext
47 lines
2.4 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
|
|
//
|
|
// AUTOUPDATE
|
|
// TIP: To test this file alone, run:
|
|
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/array/array_in_place.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/array/array_in_place.carbon
|
|
|
|
fn F() -> (i32, i32, i32);
|
|
|
|
fn G() {
|
|
var v: [(i32, i32, i32); 2] = (F(), F());
|
|
}
|
|
|
|
// CHECK:STDOUT: ; ModuleID = 'array_in_place.carbon'
|
|
// CHECK:STDOUT: source_filename = "array_in_place.carbon"
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: declare void @F(ptr sret({ i32, i32, i32 }))
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: define void @G() !dbg !4 {
|
|
// CHECK:STDOUT: entry:
|
|
// CHECK:STDOUT: %v.var = alloca [2 x { i32, i32, i32 }], align 8, !dbg !7
|
|
// CHECK:STDOUT: %.loc14_42.2.array.index = getelementptr inbounds [2 x { i32, i32, i32 }], ptr %v.var, i32 0, i32 0, !dbg !8
|
|
// CHECK:STDOUT: call void @F(ptr %.loc14_42.2.array.index), !dbg !9
|
|
// CHECK:STDOUT: %.loc14_42.5.array.index = getelementptr inbounds [2 x { i32, i32, i32 }], ptr %v.var, i32 0, i32 1, !dbg !8
|
|
// CHECK:STDOUT: call void @F(ptr %.loc14_42.5.array.index), !dbg !10
|
|
// CHECK:STDOUT: ret void, !dbg !11
|
|
// CHECK:STDOUT: }
|
|
// 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, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
|
|
// CHECK:STDOUT: !3 = !DIFile(filename: "array_in_place.carbon", directory: "")
|
|
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "G", linkageName: "G", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
|
|
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
|
|
// CHECK:STDOUT: !6 = !{}
|
|
// CHECK:STDOUT: !7 = !DILocation(line: 14, column: 7, scope: !4)
|
|
// CHECK:STDOUT: !8 = !DILocation(line: 14, column: 33, scope: !4)
|
|
// CHECK:STDOUT: !9 = !DILocation(line: 14, column: 34, scope: !4)
|
|
// CHECK:STDOUT: !10 = !DILocation(line: 14, column: 39, scope: !4)
|
|
// CHECK:STDOUT: !11 = !DILocation(line: 13, column: 1, scope: !4)
|