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Rewrite debugger tuning test case to not depend on apple sections

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Summary:
In a follow-up commit I'll change the rules for emission of accelerator
tables, which means we won't be able to use them as a litmus test for
the debugger tuning options. Instead of sections, I base the test on the
presence/absence of some debug info attributes and opcodes:
LLDB - prefers DW_OP_form_tls_address and uses DW_AT_APPLE_optimized
GDB - prefers DW_OP_GNU_push_tls_address and does not use the optimized
  attribute
SCE - prefers DW_OP_form_tls_address and does not use the optimized
  attribute

Reviewers: probinson, aprantl, dblaikie

Subscribers: JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D41985

llvm-svn: 322630
This commit is contained in:
Pavel Labath 2018-01-17 11:11:53 +00:00
parent 3e355c5363
commit ed43a0e5cd
1 changed files with 40 additions and 26 deletions
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66
test/DebugInfo/X86/debugger-tune.ll
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@ -1,46 +1,60 @@
; Verify target-based defaults for "debugger tuning," and the ability to
; override defaults.
; We use existence of the debug_pubnames section to distinguish the GDB case,
; and the apple_names section to distinguish the LLDB case. SCE has neither.
; We use the DW_AT_APPLE_optimized attribute and the DW_OP_form_tls_address
; vs. DW_OP_GNU_push_tls_address opcodes to distinguish the debuggers.
; Verify defaults for various targets.
; RUN: llc -mtriple=x86_64-scei-ps4 -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=SCE %s
; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=LLDB %s
; RUN: llc -mtriple=x86_64-pc-freebsd -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=GDB %s
; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=GDB %s
; RUN: llc -mtriple=x86_64-scei-ps4 -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=SCE %s
; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=LLDB %s
; RUN: llc -mtriple=x86_64-pc-freebsd -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=GDB %s
; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=GDB %s
; We can override defaults.
; RUN: llc -mtriple=x86_64-scei-ps4 -filetype=obj -debugger-tune=gdb < %s | llvm-readobj -sections - | FileCheck --check-prefix=GDB %s
; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj -debugger-tune=lldb < %s | llvm-readobj -sections - | FileCheck --check-prefix=LLDB %s
; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj -debugger-tune=sce < %s | llvm-readobj -sections - | FileCheck --check-prefix=SCE %s
; RUN: llc -mtriple=x86_64-scei-ps4 -filetype=obj -debugger-tune=gdb < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=GDB %s
; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj -debugger-tune=lldb < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=LLDB %s
; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj -debugger-tune=sce < %s | llvm-dwarfdump -debug-info - | FileCheck --check-prefix=SCE %s
; GDB-NOT: apple_names
; GDB: debug_pubnames
; GDB-NOT: apple_names
; GDB-NOT: DW_AT_APPLE_optimized
; GDB-NOT: DW_OP_form_tls_address
; LLDB-NOT: debug_pubnames
; LLDB: apple_names
; LLDB-NOT: debug_pubnames
; LLDB: DW_AT_APPLE_optimized
; LLDB: DW_OP_form_tls_address
; SCE-NOT: debug_pubnames
; SCE-NOT: apple_names
; SCE-NOT: DW_AT_APPLE_optimized
; SCE-NOT: DW_OP_GNU_push_tls_address
source_filename = "test/DebugInfo/X86/debugger-tune.ll"
@var = thread_local global i32 0, align 4, !dbg !0
@globalvar = global i32 0, align 4, !dbg !0
; Function Attrs: norecurse nounwind readnone uwtable
define void @_Z3funv() local_unnamed_addr #0 !dbg !11 {
ret void, !dbg !14
}
; Function Attrs: norecurse uwtable
define weak_odr hidden i32* @_ZTW3var() local_unnamed_addr #1 {
ret i32* @var
}
attributes #0 = { norecurse nounwind readnone uwtable }
attributes #1 = { norecurse uwtable }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!7, !8}
!llvm.ident = !{!9}
!llvm.module.flags = !{!7, !8, !9}
!llvm.ident = !{!10}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "globalvar", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.7.0 (trunk 238808)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5, imports: !4)
!3 = !DIFile(filename: "debugger-tune.cpp", directory: "/home/probinson/projects/scratch")
!1 = distinct !DIGlobalVariable(name: "var", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 (trunk 322268) (llvm/trunk 322267)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "debugger-tune.cpp", directory: "/tmp")
!4 = !{}
!5 = !{!0}
!6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!7 = !{i32 2, !"Dwarf Version", i32 4}
!8 = !{i32 2, !"Debug Info Version", i32 3}
!9 = !{!"clang version 3.7.0 (trunk 238808)"}
!9 = !{i32 1, !"wchar_size", i32 4}
!10 = !{!"clang version 7.0.0 (trunk 322268) (llvm/trunk 322267)"}
!11 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !3, file: !3, line: 2, type: !12, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !2, variables: !4)
!12 = !DISubroutineType(types: !13)
!13 = !{null}
!14 = !DILocation(line: 2, column: 13, scope: !11)