153 lines
6.4 KiB
YAML
153 lines
6.4 KiB
YAML
# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \
|
|
# RUN: | llvm-dwarfdump -v --name local* --regex - | FileCheck %s
|
|
#
|
|
# Generated with opt -sroa, llc -stop-after=livedebugvalues, with some metadata
|
|
# removed by hand:
|
|
# long a, b, c;
|
|
# long funone() {
|
|
# unsigned localone;
|
|
# if (c)
|
|
# return b;
|
|
# // Location should start here.
|
|
# localone = 0;
|
|
# return a;
|
|
# }
|
|
#
|
|
# short funtwo() {
|
|
# union {
|
|
# char b[2];
|
|
# short c;
|
|
# } localtwo;
|
|
# {
|
|
# // Location should start here.
|
|
# memcpy(localtwo.b, 0, 2);
|
|
# }
|
|
# return localtwo.c;
|
|
# }
|
|
#
|
|
# Check that the local variables each have a location range which reflects the
|
|
# fact that they're both unavailable at the start of the functions.
|
|
#
|
|
# CHECK: DW_TAG_variable [
|
|
# CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset]
|
|
# CHECK-NEXT: [0x{{[0-9a-z]+}}, 0x{{[0-9a-z]+}})
|
|
# CHECK-NEXT: DW_AT_name {{.*}} = "localone"
|
|
#
|
|
# CHECK: DW_TAG_variable [
|
|
# CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset]
|
|
# CHECK-NEXT: [0x{{[0-9a-z]+}}, 0x{{[0-9a-z]+}})
|
|
# CHECK-NEXT: DW_AT_name {{.*}} = "localtwo"
|
|
|
|
--- |
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@c = dso_local global i64 0, align 8, !dbg !0
|
|
@b = dso_local global i64 0, align 8, !dbg !9
|
|
@a = dso_local global i64 0, align 8, !dbg !6
|
|
|
|
define dso_local i64 @funone() !dbg !15 {
|
|
entry:
|
|
%0 = load i64, i64* @c, align 8, !dbg !21
|
|
%tobool = icmp ne i64 %0, 0, !dbg !21
|
|
br i1 %tobool, label %if.then, label %if.end, !dbg !27
|
|
|
|
if.then: ; preds = %entry
|
|
%1 = load i64, i64* @b, align 8, !dbg !21
|
|
br label %cleanup, !dbg !21
|
|
|
|
if.end: ; preds = %entry
|
|
call void @llvm.dbg.value(metadata i32 0, metadata !19, metadata !DIExpression()), !dbg !27
|
|
%2 = load i64, i64* @a, align 8, !dbg !27
|
|
br label %cleanup, !dbg !27
|
|
|
|
cleanup: ; preds = %if.end, %if.then
|
|
%retval.0 = phi i64 [ %1, %if.then ], [ %2, %if.end ], !dbg !27
|
|
ret i64 %retval.0, !dbg !27
|
|
}
|
|
|
|
define dso_local signext i16 @funtwo() !dbg !34 {
|
|
entry:
|
|
%localtwo.sroa.0.0.copyload = load i16, i16* null, align 1, !dbg !48
|
|
call void @llvm.dbg.value(metadata i16 %localtwo.sroa.0.0.copyload, metadata !39, metadata !DIExpression()), !dbg !51
|
|
ret i16 %localtwo.sroa.0.0.copyload, !dbg !51
|
|
}
|
|
|
|
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!11, !12, !13}
|
|
!llvm.ident = !{!14}
|
|
|
|
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
|
!1 = distinct !DIGlobalVariable(name: "c", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
|
|
!3 = !DIFile(filename: "test.c", directory: "/")
|
|
!4 = !{}
|
|
!5 = !{!6, !9, !0}
|
|
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
|
|
!7 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
|
|
!8 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
|
|
!9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression())
|
|
!10 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
|
|
!11 = !{i32 7, !"Dwarf Version", i32 4}
|
|
!12 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!13 = !{i32 1, !"wchar_size", i32 4}
|
|
!14 = !{!"clang version 11.0.0"}
|
|
!15 = distinct !DISubprogram(name: "funone", scope: !3, file: !3, line: 3, type: !16, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !18)
|
|
!16 = !DISubroutineType(types: !17)
|
|
!17 = !{!8}
|
|
!18 = !{!19}
|
|
!19 = !DILocalVariable(name: "localone", scope: !15, file: !3, line: 4, type: !20)
|
|
!20 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
|
|
!21 = !DILocation(line: 5, column: 7, scope: !22)
|
|
!22 = distinct !DILexicalBlock(scope: !15, file: !3, line: 5, column: 7)
|
|
!27 = !DILocation(line: 5, column: 7, scope: !15)
|
|
!34 = distinct !DISubprogram(name: "funtwo", scope: !3, file: !3, line: 13, type: !35, scopeLine: 13, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !38)
|
|
!35 = !DISubroutineType(types: !36)
|
|
!36 = !{!37}
|
|
!37 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
|
|
!38 = !{!39}
|
|
!39 = !DILocalVariable(name: "localtwo", scope: !34, file: !3, line: 17, type: !40)
|
|
!40 = distinct !DICompositeType(tag: DW_TAG_union_type, scope: !34, file: !3, line: 14, size: 16, elements: !41)
|
|
!41 = !{!42, !47}
|
|
!42 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !40, file: !3, line: 15, baseType: !43, size: 16)
|
|
!43 = !DICompositeType(tag: DW_TAG_array_type, baseType: !44, size: 16, elements: !45)
|
|
!44 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
|
|
!45 = !{!46}
|
|
!46 = !DISubrange(count: 2)
|
|
!47 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !40, file: !3, line: 16, baseType: !37, size: 16)
|
|
!48 = !DILocation(line: 20, column: 5, scope: !49)
|
|
!49 = distinct !DILexicalBlock(scope: !34, file: !3, line: 18, column: 3)
|
|
!51 = !DILocation(line: 22, column: 3, scope: !34)
|
|
|
|
...
|
|
---
|
|
name: funone
|
|
body: |
|
|
bb.0.entry:
|
|
successors: %bb.1(0x50000000), %bb.2(0x30000000)
|
|
|
|
CMP64mi8 $rip, 1, $noreg, @c, $noreg, 0, implicit-def $eflags, debug-location !21 :: (dereferenceable load 8 from @c)
|
|
JCC_1 %bb.2, 4, implicit killed $eflags, debug-location !27
|
|
|
|
bb.1.if.then:
|
|
renamable $rax = MOV64rm $rip, 1, $noreg, @b, $noreg, debug-location !21 :: (dereferenceable load 8 from @b)
|
|
RETQ $rax, debug-location !27
|
|
|
|
bb.2.if.end:
|
|
DBG_VALUE 0, $noreg, !19, !DIExpression(), debug-location !27
|
|
renamable $rax = MOV64rm $rip, 1, $noreg, @a, $noreg, debug-location !27 :: (dereferenceable load 8 from @a)
|
|
RETQ $rax, debug-location !27
|
|
|
|
...
|
|
---
|
|
name: funtwo
|
|
body: |
|
|
bb.0.entry:
|
|
$eax = MOVZX32rm16 $noreg, 1, $noreg, 0, $noreg, debug-location !48 :: (load 2 from `i16* null`, align 1)
|
|
DBG_VALUE $ax, $noreg, !39, !DIExpression(), debug-location !51
|
|
RETQ $ax, debug-location !51
|
|
|
|
...
|