dca2b36ba0
This reapplies c0f6ad7d1f3ccb9d0b9ce9ef8dfa06409ccf1b3e with an additional fix in test/DebugInfo/X86/constant-loclist.ll, which had a slightly different output on windows targets. The test now accounts for this difference. The original commit message follows. Summary: As discussed in D70081, this adds the ability to dump section names/indices to the location list dumper. It does this by moving the range specific logic from DWARFDie.cpp:dumpRanges into the DWARFAddressRange class. The trickiest part of this patch is the backflip in the meanings of the two dump flags for the location list sections. The dumping of "raw" location list data is now controlled by "DisplayRawContents" flag. This frees up the "Verbose" flag to be used to control whether we print the section index. Additionally, the DisplayRawContents flag is set for section-based dumps whenever the --verbose option is passed, but this is not done for the "inline" dumps. Also note that the index dumping currently does not work for the DWARF v5 location lists, as the parser does not fill out the appropriate fields. This will be done in a separate patch. Reviewers: dblaikie, probinson, JDevlieghere, SouraVX Subscribers: sdardis, hiraditya, jrtc27, atanasyan, arphaman, aprantl, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70227
121 lines
4.8 KiB
LLVM
121 lines
4.8 KiB
LLVM
; REQUIRES: object-emission
|
|
|
|
; Check that when variables are allocated on the stack we generate debug locations
|
|
; for the stack location directly instead of generating a register+offset indirection.
|
|
|
|
; RUN: llc -O2 -filetype=obj -disable-post-ra -mtriple=x86_64-unknown-linux-gnu < %s \
|
|
; RUN: | llvm-dwarfdump - | FileCheck %s
|
|
;
|
|
; int data = 17;
|
|
; int sum = 0;
|
|
; int zero = 0;
|
|
; int *ptr;
|
|
;
|
|
; extern void foo(int i, int *p);
|
|
;
|
|
; int main()
|
|
; {
|
|
; int val;
|
|
; val = data;
|
|
; foo(1, &val);
|
|
; foo(2, &data);
|
|
; return zero;
|
|
; }
|
|
;
|
|
; CHECK: .debug_info contents
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NOT: NULL
|
|
; CHECK: DW_TAG_variable
|
|
; CHECK: DW_AT_location ({{.*}}
|
|
; CHECK-NEXT: [{{0x.*}}, {{0x.*}}): DW_OP_reg0 RAX
|
|
;
|
|
; Note: This is a location, so we don't want an extra DW_OP_deref at the end.
|
|
; LLDB gets the location right without it:
|
|
; Variable: ... name = "val", type = "int", location = [rsp+4], decl = frame.c:10
|
|
; Adding the deref actually creates an invalid location:
|
|
; ... [rsp+4] DW_OP_deref
|
|
;
|
|
; CHECK-NEXT: [{{0x.*}}, {{0x.*}}): DW_OP_breg7 RSP+4)
|
|
; CHECK-NEXT: DW_AT_name ("val")
|
|
|
|
; ModuleID = 'frame.c'
|
|
source_filename = "frame.c"
|
|
|
|
@data = global i32 17, align 4, !dbg !0
|
|
@sum = local_unnamed_addr global i32 0, align 4, !dbg !6
|
|
@zero = local_unnamed_addr global i32 0, align 4, !dbg !9
|
|
@ptr = common local_unnamed_addr global i32* null, align 8, !dbg !11
|
|
|
|
define i32 @main() local_unnamed_addr !dbg !17 {
|
|
entry:
|
|
%val = alloca i32, align 4
|
|
%0 = bitcast i32* %val to i8*, !dbg !22
|
|
call void @llvm.lifetime.start(i64 4, i8* %0), !dbg !22
|
|
%1 = load i32, i32* @data, align 4, !dbg !23, !tbaa !24
|
|
tail call void @llvm.dbg.value(metadata i32 %1, metadata !21, metadata !28), !dbg !29
|
|
store i32 %1, i32* %val, align 4, !dbg !30, !tbaa !24
|
|
tail call void @llvm.dbg.value(metadata i32* %val, metadata !21, metadata !31), !dbg !29
|
|
call void @foo(i32 1, i32* nonnull %val), !dbg !32
|
|
call void @foo(i32 2, i32* nonnull @data), !dbg !33
|
|
%2 = load i32, i32* @zero, align 4, !dbg !34, !tbaa !24
|
|
call void @llvm.lifetime.end(i64 4, i8* %0), !dbg !35
|
|
ret i32 %2, !dbg !36
|
|
}
|
|
|
|
; Function Attrs: argmemonly nounwind
|
|
declare void @llvm.lifetime.start(i64, i8* nocapture) #0
|
|
|
|
declare void @foo(i32, i32*) local_unnamed_addr
|
|
|
|
; Function Attrs: argmemonly nounwind
|
|
declare void @llvm.lifetime.end(i64, i8* nocapture) #0
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
|
|
|
|
attributes #0 = { argmemonly nounwind }
|
|
attributes #1 = { nounwind readnone }
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!14, !15}
|
|
!llvm.ident = !{!16}
|
|
|
|
!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
|
!1 = !DIGlobalVariable(name: "data", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.9.0 (trunk 273961)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
|
|
!3 = !DIFile(filename: "frame.c", directory: "/home/user/test")
|
|
!4 = !{}
|
|
!5 = !{!0, !6, !9, !11}
|
|
!6 = distinct !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
|
|
!7 = !DIGlobalVariable(name: "sum", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
|
|
!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!9 = distinct !DIGlobalVariableExpression(var: !10, expr: !DIExpression())
|
|
!10 = !DIGlobalVariable(name: "zero", scope: !2, file: !3, line: 3, type: !8, isLocal: false, isDefinition: true)
|
|
!11 = distinct !DIGlobalVariableExpression(var: !12, expr: !DIExpression())
|
|
!12 = !DIGlobalVariable(name: "ptr", scope: !2, file: !3, line: 4, type: !13, isLocal: false, isDefinition: true)
|
|
!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64, align: 64)
|
|
!14 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!15 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!16 = !{!"clang version 3.9.0 (trunk 273961)"}
|
|
!17 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 8, type: !18, isLocal: false, isDefinition: true, scopeLine: 9, isOptimized: true, unit: !2, retainedNodes: !20)
|
|
!18 = !DISubroutineType(types: !19)
|
|
!19 = !{!8}
|
|
!20 = !{!21}
|
|
!21 = !DILocalVariable(name: "val", scope: !17, file: !3, line: 10, type: !8)
|
|
!22 = !DILocation(line: 10, column: 3, scope: !17)
|
|
!23 = !DILocation(line: 11, column: 9, scope: !17)
|
|
!24 = !{!25, !25, i64 0}
|
|
!25 = !{!"int", !26, i64 0}
|
|
!26 = !{!"omnipotent char", !27, i64 0}
|
|
!27 = !{!"Simple C/C++ TBAA"}
|
|
!28 = !DIExpression()
|
|
!29 = !DILocation(line: 10, column: 7, scope: !17)
|
|
!30 = !DILocation(line: 11, column: 7, scope: !17)
|
|
!31 = !DIExpression(DW_OP_deref)
|
|
!32 = !DILocation(line: 12, column: 3, scope: !17)
|
|
!33 = !DILocation(line: 13, column: 3, scope: !17)
|
|
!34 = !DILocation(line: 14, column: 10, scope: !17)
|
|
!35 = !DILocation(line: 15, column: 1, scope: !17)
|
|
!36 = !DILocation(line: 14, column: 3, scope: !17)
|
|
|