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llvm-project/llvm/test/DebugInfo/X86/basic-block-sections_1.ll
Sriraman Tallam 34e70d722d Append ".__part." to every basic block section symbol. 
Every basic block section symbol created by -fbasic-block-sections will contain
".__part." to know that this symbol corresponds to a basic block fragment of
the function.

This patch solves two problems:

a) Like D89617, we want function symbols with suffixes to be properly qualified
   so that external tools like profile aggregators know exactly what this
   symbol corresponds to.
b) The current basic block naming just adds a ".N" to the symbol name where N is
   some integer. This collides with how clang creates __cxx_global_var_init.N.
   clang creates these symbol names to call constructor functions and basic
   block symbol naming should not use the same style.

Fixed all the test cases and added an extra test for __cxx_global_var_init
breakage.

Differential Revision: https://reviews.llvm.org/D93082
2020-12-23 11:35:44 -08:00

106 lines
5.2 KiB
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; RUN: llc -O0 %s -mtriple=x86_64 -filetype=obj -o %t && llvm-dwarfdump -debug-info -v %t | FileCheck --check-prefix=NO-SECTIONS %s
; RUN: llc -O0 %s --basic-block-sections=all --unique-basic-block-section-names -mtriple=x86_64 -filetype=obj -o %t && llvm-dwarfdump -debug-info -v %t | FileCheck --check-prefix=BB-SECTIONS %s
; RUN: llc -O0 %s --basic-block-sections=all --unique-basic-block-section-names -mtriple=x86_64 -filetype=obj -split-dwarf-file=%t.dwo -o %t && llvm-dwarfdump -debug-info -v %t | FileCheck --check-prefix=BB-SECTIONS %s
; RUN: llc -O0 %s --basic-block-sections=all -mtriple=x86_64 -o - | FileCheck --check-prefix=BB-SECTIONS-ASM %s
; RUN: llc -O0 %s -mtriple=x86_64 -filetype=obj -o %t && llvm-dwarfdump -debug-line %t | FileCheck --check-prefix=BB-SECTIONS-LINE-TABLE %s
; From:
; 1 int foo(int a) {
; 2 if (a > 20)
; 3 return 2;
; 4 else
; 5 return 0;
; 6 }
; NO-SECTIONS: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000 ".text")
; NO-SECTIONS: DW_AT_high_pc [DW_FORM_data4] ({{.*}})
; BB-SECTIONS: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
; BB-SECTIONS-NEXT: DW_AT_ranges [DW_FORM_sec_offset]
; BB-SECTIONS-NEXT: [{{.*}}) ".text._Z3fooi.__part.1"
; BB-SECTIONS-NEXT: [{{.*}}) ".text._Z3fooi.__part.2"
; BB-SECTIONS-NEXT: [{{.*}}) ".text._Z3fooi.__part.3"
; BB-SECTIONS-NEXT: [{{.*}}) ".text"
; BB-SECTIONS-ASM: _Z3fooi:
; BB-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
; BB-SECTIONS-ASM-NEXT: .loc 1 2 9 prologue_end
; BB-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
; BB-SECTIONS-ASM-NEXT: .loc 1 2 7 is_stmt
; BB-SECTIONS-ASM: _Z3fooi.__part.1:
; BB-SECTIONS-ASM: .LBB_END0_{{[0-9]+}}:
; BB-SECTIONS-ASM: .size _Z3fooi.__part.1, .LBB_END0_{{[0-9]+}}-_Z3fooi.__part.1
; BB-SECTIONS-ASM: _Z3fooi.__part.2:
; BB-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
; BB-SECTIONS-ASM-NEXT: .LBB_END0_{{[0-9]+}}:
; BB-SECTIONS-ASM: .size _Z3fooi.__part.2, .LBB_END0_{{[0-9]+}}-_Z3fooi.__part.2
; BB-SECTIONS-ASM: _Z3fooi.__part.3:
; BB-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
; BB-SECTIONS-ASM-NEXT: .LBB_END0_{{[0-9]+}}:
; BB-SECTIONS-ASM: .size _Z3fooi.__part.3, .LBB_END0_{{[0-9]+}}-_Z3fooi.__part.3
; BB-SECTIONS-ASM: .Lfunc_end0:
; BB-SECTIONS-ASM: .Ldebug_ranges0:
; BB-SECTIONS-ASM-NEXT: .quad _Z3fooi.__part.1
; BB-SECTIONS-ASM-NEXT: .quad .LBB_END0_{{[0-9]+}}
; BB-SECTIONS-ASM-NEXT: .quad _Z3fooi.__part.2
; BB-SECTIONS-ASM-NEXT: .quad .LBB_END0_{{[0-9]+}}
; BB-SECTIONS-ASM-NEXT: .quad _Z3fooi.__part.3
; BB-SECTIONS-ASM-NEXT: .quad .LBB_END0_{{[0-9]+}}
; BB-SECTIONS-ASM-NEXT: .quad .Lfunc_begin0
; BB-SECTIONS-ASM-NEXT: .quad .Lfunc_end0
; BB-SECTIONS-ASM-NEXT: .quad 0
; BB-SECTIONS-ASM-NEXT: .quad 0
; BB-SECTIONS-LINE-TABLE: 0x0000000000000000 1 0 1 0 0 is_stmt
; BB-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000004 2 9 1 0 0 is_stmt prologue_end
; BB-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000009 2 7 1 0 0
; BB-SECTIONS-LINE-TABLE-NEXT: 0x000000000000000b 3 5 1 0 0 is_stmt
; BB-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000015 5 5 1 0 0 is_stmt
; BB-SECTIONS-LINE-TABLE-NEXT: 0x000000000000001d 6 1 1 0 0 is_stmt
; BB-SECTIONS-LINE-TABLE-NEXT: 0x0000000000000022 6 1 1 0 0 is_stmt end_sequence
; Function Attrs: noinline nounwind optnone uwtable
define dso_local i32 @_Z3fooi(i32 %0) !dbg !7 {
%2 = alloca i32, align 4
%3 = alloca i32, align 4
store i32 %0, i32* %3, align 4
call void @llvm.dbg.declare(metadata i32* %3, metadata !11, metadata !DIExpression()), !dbg !12
%4 = load i32, i32* %3, align 4, !dbg !13
%5 = icmp sgt i32 %4, 20, !dbg !15
br i1 %5, label %6, label %7, !dbg !16
6: ; preds = %1
store i32 2, i32* %2, align 4, !dbg !17
br label %8, !dbg !17
7: ; preds = %1
store i32 0, i32* %2, align 4, !dbg !18
br label %8, !dbg !18
8: ; preds = %7, %6
%9 = load i32, i32* %2, align 4, !dbg !19
ret i32 %9, !dbg !19
}
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.declare(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0 (git@github.com:google/llvm-propeller.git f9421ebf4b3d8b64678bf6c49d1607fdce3f50c5)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
!1 = !DIFile(filename: "debuginfo.cc", directory: "/")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!8 = !DISubroutineType(types: !9)
!9 = !{!10, !10}
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!11 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !10)
!12 = !DILocation(line: 1, column: 13, scope: !7)
!13 = !DILocation(line: 2, column: 7, scope: !14)
!14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2, column: 7)
!15 = !DILocation(line: 2, column: 9, scope: !14)
!16 = !DILocation(line: 2, column: 7, scope: !7)
!17 = !DILocation(line: 3, column: 5, scope: !14)
!18 = !DILocation(line: 5, column: 5, scope: !14)
!19 = !DILocation(line: 6, column: 1, scope: !7)
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