; REQUIRES: object-emission
|
|
; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t
|
; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
|
|
; Check that any type can have a vtable holder.
|
; CHECK: [[SP:.*]]: DW_TAG_structure_type
|
; CHECK-NOT: TAG
|
; CHECK: DW_AT_containing_type [DW_FORM_ref4]
|
; CHECK: DW_AT_name [DW_FORM_strp] {{.*}}= "vtable")
|
|
; This was compiled using
|
; rustc -g --emit=llvm-ir t2.rs
|
; ... and then edited by hand, because rustc is using a somewhat older llvm.
|
;
|
; t2.rs is:
|
;
|
; // trait object test case
|
;
|
; pub trait T {
|
; }
|
;
|
; impl T for f64 {
|
; }
|
;
|
; pub fn main() {
|
; let tu = &23.0f64 as &T;
|
; }
|
; t2.rs ends here ^^^
|
|
; ModuleID = 't2.cgu-0.rs'
|
source_filename = "t2.cgu-0.rs"
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
target triple = "x86_64-unknown-linux-gnu"
|
|
@ref.0 = internal unnamed_addr constant double 2.300000e+01, align 8
|
@vtable.1 = internal unnamed_addr constant { void (double*)*, i64, i64 } { void (double*)* @_ZN4core3ptr13drop_in_place17h2818a933abde117eE, i64 8, i64 8 }, align 8, !dbg !0
|
@__rustc_debug_gdb_scripts_section__ = linkonce_odr unnamed_addr constant [34 x i8] c"\01gdb_load_rust_pretty_printers.py\00", section ".debug_gdb_scripts", align 1
|
|
; core::ptr::drop_in_place
|
; Function Attrs: uwtable
|
define internal void @_ZN4core3ptr13drop_in_place17h2818a933abde117eE(double*) unnamed_addr #0 !dbg !11 {
|
start:
|
%arg0 = alloca double*
|
store double* %0, double** %arg0
|
call void @llvm.dbg.declare(metadata double** %arg0, metadata !20, metadata !22), !dbg !23
|
ret void, !dbg !24
|
}
|
|
; t2::main
|
; Function Attrs: uwtable
|
define internal void @_ZN2t24main17h6319e6ac7de3a097E() unnamed_addr #0 !dbg !25 {
|
start:
|
%tu = alloca { i8*, void (i8*)** }
|
call void @llvm.dbg.declare(metadata { i8*, void (i8*)** }* %tu, metadata !29, metadata !22), !dbg !37
|
%0 = getelementptr inbounds { i8*, void (i8*)** }, { i8*, void (i8*)** }* %tu, i32 0, i32 0, !dbg !37
|
store i8* bitcast (double* @ref.0 to i8*), i8** %0, !dbg !37
|
%1 = getelementptr inbounds { i8*, void (i8*)** }, { i8*, void (i8*)** }* %tu, i32 0, i32 1, !dbg !37
|
store void (i8*)** bitcast ({ void (double*)*, i64, i64 }* @vtable.1 to void (i8*)**), void (i8*)*** %1, !dbg !37
|
ret void, !dbg !38
|
}
|
|
; Function Attrs: nounwind readnone
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
|
|
define i32 @main(i32, i8**) unnamed_addr #2 {
|
top:
|
%2 = load volatile i8, i8* getelementptr inbounds ([34 x i8], [34 x i8]* @__rustc_debug_gdb_scripts_section__, i32 0, i32 0), align 1
|
%3 = sext i32 %0 to i64
|
; call std::rt::lang_start
|
%4 = call i64 @_ZN3std2rt10lang_start17h2626caf1112a00beE(void ()* @_ZN2t24main17h6319e6ac7de3a097E, i64 %3, i8** %1)
|
%5 = trunc i64 %4 to i32
|
ret i32 %5
|
}
|
|
; std::rt::lang_start
|
declare i64 @_ZN3std2rt10lang_start17h2626caf1112a00beE(void ()*, i64, i8**) unnamed_addr #3
|
|
attributes #0 = { uwtable "no-frame-pointer-elim"="true" "probe-stack"="__rust_probestack" }
|
attributes #1 = { nounwind readnone }
|
attributes #2 = { "no-frame-pointer-elim"="true" }
|
attributes #3 = { "no-frame-pointer-elim"="true" "probe-stack"="__rust_probestack" }
|
|
!llvm.module.flags = !{!6, !7}
|
!llvm.dbg.cu = !{!8}
|
|
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
!1 = distinct !DIGlobalVariable(name: "vtable", scope: null, file: !2, type: !3, isLocal: true, isDefinition: true)
|
!2 = !DIFile(filename: "<unknown>", directory: "")
|
!3 = !DICompositeType(tag: DW_TAG_structure_type, name: "vtable", file: !2, size: 64, align: 64, flags: DIFlagArtificial, elements: !4, vtableHolder: !5, identifier: "vtable")
|
!4 = !{}
|
!5 = !DIBasicType(name: "f64", size: 64, encoding: DW_ATE_float)
|
!6 = !{i32 1, !"PIE Level", i32 2}
|
!7 = !{i32 2, !"Debug Info Version", i32 3}
|
!8 = distinct !DICompileUnit(language: DW_LANG_Rust, file: !9, producer: "clang LLVM (rustc version 1.22.0-dev)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !10)
|
!9 = !DIFile(filename: "t2.rs", directory: "/home/tromey/Rust")
|
!10 = !{!0}
|
!11 = distinct !DISubprogram(name: "drop_in_place<f64>", linkageName: "_ZN4core3ptr18drop_in_place<f64>E", scope: !13, file: !12, line: 59, type: !15, isLocal: false, isDefinition: true, scopeLine: 59, flags: DIFlagPrototyped, isOptimized: false, unit: !8, templateParams: !18, retainedNodes: !4)
|
!12 = !DIFile(filename: "/home/tromey/Rust/rust/src/libcore/ptr.rs", directory: "")
|
!13 = !DINamespace(name: "ptr", scope: !14)
|
!14 = !DINamespace(name: "core", scope: null)
|
!15 = !DISubroutineType(types: !16)
|
!16 = !{null, !17}
|
!17 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "*mut f64", baseType: !5, size: 64, align: 64)
|
!18 = !{!19}
|
!19 = !DITemplateTypeParameter(name: "T", type: !5)
|
!20 = !DILocalVariable(arg: 1, scope: !11, file: !21, line: 1, type: !17)
|
!21 = !DIFile(filename: "t2.rs", directory: "")
|
!22 = !DIExpression()
|
!23 = !DILocation(line: 1, scope: !11)
|
!24 = !DILocation(line: 59, scope: !11)
|
!25 = distinct !DISubprogram(name: "main", linkageName: "_ZN2t24mainE", scope: !26, file: !9, line: 9, type: !27, isLocal: true, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped | DIFlagMainSubprogram, isOptimized: false, unit: !8, templateParams: !4, retainedNodes: !4)
|
!26 = !DINamespace(name: "t2", scope: null)
|
!27 = !DISubroutineType(types: !28)
|
!28 = !{null}
|
!29 = !DILocalVariable(name: "tu", scope: !30, file: !9, line: 10, type: !31, align: 8)
|
!30 = distinct !DILexicalBlock(scope: !25, file: !9, line: 10, column: 4)
|
!31 = !DICompositeType(tag: DW_TAG_structure_type, name: "&T", scope: !26, file: !2, size: 128, align: 64, elements: !32, identifier: "b9f642b757d8ad3984c1e721e3ce6016d14d9322")
|
!32 = !{!33, !36}
|
!33 = !DIDerivedType(tag: DW_TAG_member, name: "pointer", scope: !31, file: !2, baseType: !34, size: 64, align: 64, flags: DIFlagArtificial)
|
!34 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "*const u8", baseType: !35, size: 64, align: 64)
|
!35 = !DIBasicType(name: "u8", size: 8, encoding: DW_ATE_unsigned)
|
!36 = !DIDerivedType(tag: DW_TAG_member, name: "vtable", scope: !31, file: !2, baseType: !34, size: 64, align: 64, offset: 64, flags: DIFlagArtificial)
|
!37 = !DILocation(line: 10, scope: !30)
|
!38 = !DILocation(line: 11, scope: !25)
|
