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llvm-mirror/test/CodeGen/ARM/debug-info-s16-reg.ll
Shiva Chen a2029fa58e [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 
In order to set breakpoints on labels and list source code around
labels, we need collect debug information for labels, i.e., label
name, the function label belong, line number in the file, and the
address label located. In order to keep these information in LLVM
IR and to allow backend to generate debug information correctly.
We create a new kind of metadata for labels, DILabel. The format
of DILabel is

!DILabel(scope: !1, name: "foo", file: !2, line: 3)

We hope to keep debug information as much as possible even the
code is optimized. So, we create a new kind of intrinsic for label
metadata to avoid the metadata is eliminated with basic block.
The intrinsic will keep existing if we keep it from optimized out.
The format of the intrinsic is

llvm.dbg.label(metadata !1)

It has only one argument, that is the DILabel metadata. The
intrinsic will follow the label immediately. Backend could get the
label metadata through the intrinsic's parameter.

We also create DIBuilder API for labels to be used by Frontend.
Frontend could use createLabel() to allocate DILabel objects, and use
insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR.

Differential Revision: https://reviews.llvm.org/D45024

Patch by Hsiangkai Wang.

llvm-svn: 331841
2018-05-09 02:40:45 +00:00

124 lines
7.7 KiB
LLVM
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; RUN: llc < %s - | FileCheck %s
; Radar 9309221
; Test dwarf reg no for s16
;CHECK: super-register DW_OP_regx
;CHECK-NEXT: 264
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-macosx10.6.7"
@.str = private unnamed_addr constant [11 x i8] c"%p %lf %c\0A\00"
@.str1 = private unnamed_addr constant [6 x i8] c"point\00"
define i32 @inlineprinter(i8* %ptr, float %val, i8 zeroext %c) nounwind optsize ssp !dbg !0 {
entry:
tail call void @llvm.dbg.value(metadata i8* %ptr, metadata !8, metadata !DIExpression()), !dbg !24
tail call void @llvm.dbg.value(metadata float %val, metadata !10, metadata !DIExpression()), !dbg !25
tail call void @llvm.dbg.value(metadata i8 %c, metadata !12, metadata !DIExpression()), !dbg !26
%conv = fpext float %val to double, !dbg !27
%conv3 = zext i8 %c to i32, !dbg !27
%call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i8* %ptr, double %conv, i32 %conv3) nounwind optsize, !dbg !27
ret i32 0, !dbg !29
}
declare i32 @printf(i8* nocapture, ...) nounwind optsize
define i32 @printer(i8* %ptr, float %val, i8 zeroext %c) nounwind optsize noinline ssp !dbg !6 {
entry:
tail call void @llvm.dbg.value(metadata i8* %ptr, metadata !14, metadata !DIExpression()), !dbg !30
tail call void @llvm.dbg.value(metadata float %val, metadata !15, metadata !DIExpression()), !dbg !31
tail call void @llvm.dbg.value(metadata i8 %c, metadata !16, metadata !DIExpression()), !dbg !32
%conv = fpext float %val to double, !dbg !33
%conv3 = zext i8 %c to i32, !dbg !33
%call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i8* %ptr, double %conv, i32 %conv3) nounwind optsize, !dbg !33
ret i32 0, !dbg !35
}
define i32 @main(i32 %argc, i8** nocapture %argv) nounwind optsize ssp !dbg !7 {
entry:
tail call void @llvm.dbg.value(metadata i32 %argc, metadata !17, metadata !DIExpression()), !dbg !36
tail call void @llvm.dbg.value(metadata i8** %argv, metadata !18, metadata !DIExpression()), !dbg !37
%conv = sitofp i32 %argc to double, !dbg !38
%add = fadd double %conv, 5.555552e+05, !dbg !38
%conv1 = fptrunc double %add to float, !dbg !38
tail call void @llvm.dbg.value(metadata float %conv1, metadata !22, metadata !DIExpression()), !dbg !38
%call = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str1, i32 0, i32 0)) nounwind optsize, !dbg !39
%add.ptr = getelementptr i8, i8* bitcast (i32 (i32, i8**)* @main to i8*), i32 %argc, !dbg !40
%add5 = add nsw i32 %argc, 97, !dbg !40
%conv6 = trunc i32 %add5 to i8, !dbg !40
tail call void @llvm.dbg.value(metadata i8* %add.ptr, metadata !58, metadata !DIExpression()) nounwind, !dbg !41
tail call void @llvm.dbg.value(metadata float %conv1, metadata !60, metadata !DIExpression()) nounwind, !dbg !42
tail call void @llvm.dbg.value(metadata i8 %conv6, metadata !62, metadata !DIExpression()) nounwind, !dbg !43
%conv.i = fpext float %conv1 to double, !dbg !44
%conv3.i = and i32 %add5, 255, !dbg !44
%call.i = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i8* %add.ptr, double %conv.i, i32 %conv3.i) nounwind optsize, !dbg !44
%call14 = tail call i32 @printer(i8* %add.ptr, float %conv1, i8 zeroext %conv6) optsize, !dbg !45
ret i32 0, !dbg !46
}
declare i32 @puts(i8* nocapture) nounwind optsize
declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!53}
!0 = distinct !DISubprogram(name: "inlineprinter", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 5, file: !51, scope: !1, type: !3, retainedNodes: !48)
!1 = !DIFile(filename: "a.c", directory: "/private/tmp")
!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 129915)", isOptimized: true, emissionKind: FullDebug, file: !51, enums: !52, retainedTypes: !52, imports: null)
!3 = !DISubroutineType(types: !4)
!4 = !{!5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!6 = distinct !DISubprogram(name: "printer", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 12, file: !51, scope: !1, type: !3, retainedNodes: !49)
!7 = distinct !DISubprogram(name: "main", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, scopeLine: 18, file: !51, scope: !1, type: !3, retainedNodes: !50)
!8 = !DILocalVariable(name: "ptr", line: 4, arg: 1, scope: !0, file: !1, type: !9)
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: null)
!10 = !DILocalVariable(name: "val", line: 4, arg: 2, scope: !0, file: !1, type: !11)
!11 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
!12 = !DILocalVariable(name: "c", line: 4, arg: 3, scope: !0, file: !1, type: !13)
!13 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
!58 = !DILocalVariable(name: "ptr", line: 4, arg: 1, scope: !0, file: !1, type: !9)
!60 = !DILocalVariable(name: "val", line: 4, arg: 2, scope: !0, file: !1, type: !11)
!62 = !DILocalVariable(name: "c", line: 4, arg: 3, scope: !0, file: !1, type: !13)
!14 = !DILocalVariable(name: "ptr", line: 11, arg: 1, scope: !6, file: !1, type: !9)
!15 = !DILocalVariable(name: "val", line: 11, arg: 2, scope: !6, file: !1, type: !11)
!16 = !DILocalVariable(name: "c", line: 11, arg: 3, scope: !6, file: !1, type: !13)
!17 = !DILocalVariable(name: "argc", line: 17, arg: 1, scope: !7, file: !1, type: !5)
!18 = !DILocalVariable(name: "argv", line: 17, arg: 2, scope: !7, file: !1, type: !19)
!19 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !20)
!20 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !21)
!21 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!22 = !DILocalVariable(name: "dval", line: 19, scope: !23, file: !1, type: !11)
!23 = distinct !DILexicalBlock(line: 18, column: 1, file: !51, scope: !7)
!24 = !DILocation(line: 4, column: 22, scope: !0)
!25 = !DILocation(line: 4, column: 33, scope: !0)
!26 = !DILocation(line: 4, column: 52, scope: !0)
!27 = !DILocation(line: 6, column: 3, scope: !28)
!28 = distinct !DILexicalBlock(line: 5, column: 1, file: !51, scope: !0)
!29 = !DILocation(line: 7, column: 3, scope: !28)
!30 = !DILocation(line: 11, column: 42, scope: !6)
!31 = !DILocation(line: 11, column: 53, scope: !6)
!32 = !DILocation(line: 11, column: 72, scope: !6)
!33 = !DILocation(line: 13, column: 3, scope: !34)
!34 = distinct !DILexicalBlock(line: 12, column: 1, file: !51, scope: !6)
!35 = !DILocation(line: 14, column: 3, scope: !34)
!36 = !DILocation(line: 17, column: 15, scope: !7)
!37 = !DILocation(line: 17, column: 28, scope: !7)
!38 = !DILocation(line: 19, column: 31, scope: !23)
!39 = !DILocation(line: 20, column: 3, scope: !23)
!40 = !DILocation(line: 21, column: 3, scope: !23)
!41 = !DILocation(line: 4, column: 22, scope: !0, inlinedAt: !40)
!42 = !DILocation(line: 4, column: 33, scope: !0, inlinedAt: !40)
!43 = !DILocation(line: 4, column: 52, scope: !0, inlinedAt: !40)
!44 = !DILocation(line: 6, column: 3, scope: !28, inlinedAt: !40)
!45 = !DILocation(line: 22, column: 3, scope: !23)
!46 = !DILocation(line: 23, column: 1, scope: !23)
!48 = !{!8, !10, !12}
!49 = !{!14, !15, !16}
!50 = !{!17, !18, !22}
!51 = !DIFile(filename: "a.c", directory: "/private/tmp")
!52 = !{}
!53 = !{i32 1, !"Debug Info Version", i32 3}
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