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llvm-project/llvm/test/DebugInfo/Generic/global-sra-struct.ll

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Un-revert r310014: false revert, it wasn't the cause of build break llvm-svn: 310021
2017-08-04 12:51:15 +08:00
; RUN: opt -S -globalopt < %s | FileCheck %s
source_filename = "test.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"
%struct.mystruct = type { i32, i64 }
; Generated at -Os from:
;
; static struct mystruct {
; int a;
; long long int b;
; } static_struct;
; void __attribute__((nodebug)) foo(int in) { static_struct.a = in; }
; void __attribute__((nodebug)) bar(int in) { static_struct.b = in; }
; int main(int argc, char **argv)
; {
; foo(argv[0][1]);
; bar(argv[0][1]);
; return static_struct.a + static_struct.b;
; }
; CHECK: @static_struct.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL0:.*]]
; CHECK: @static_struct.1 = internal unnamed_addr global i64 0, align 8, !dbg ![[EL1:.*]]
Parse and print DIExpressions inline to ease IR and MIR testing Summary: Most DIExpressions are empty or very simple. When they are complex, they tend to be unique, so checking them inline is reasonable. This also avoids the need for CodeGen passes to append to the llvm.dbg.mir named md node. See also PR22780, for making DIExpression not be an MDNode. Reviewers: aprantl, dexonsmith, dblaikie Subscribers: qcolombet, javed.absar, eraman, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37075 llvm-svn: 311594
2017-08-24 04:31:27 +08:00
; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32))
Un-revert r310014: false revert, it wasn't the cause of build break llvm-svn: 310021
2017-08-04 12:51:15 +08:00
; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "static_struct"
[GlobalOpt] Emit fragments using field offsets from struct layout Summary: When creating the debug fragments for a SRA'd struct, use the fields' offsets, taken from the struct layout, as the offsets for the resulting fragments. This fixes an issue where GlobalOpt would emit fragments with incorrect offsets for padded fields. This should solve PR36016. Patch by David Stenberg. Reviewers: aprantl Reviewed By: aprantl Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D42489 llvm-svn: 323411
2018-01-25 18:09:26 +08:00
; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 64, 64))
Un-revert r310014: false revert, it wasn't the cause of build break llvm-svn: 310021
2017-08-04 12:51:15 +08:00
@static_struct = internal global %struct.mystruct zeroinitializer, align 8, !dbg !0
; Function Attrs: nounwind optsize ssp uwtable
define void @foo(i32 %in) #0 {
entry:
store i32 %in, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !tbaa !17
ret void
}
; Function Attrs: nounwind optsize ssp uwtable
define void @bar(i32 %in) #0 {
entry:
%conv = sext i32 %in to i64
store i64 %conv, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !tbaa !23
ret void
}
; Function Attrs: nounwind optsize ssp uwtable
define i32 @main(i32 %argc, i8** %argv) #0 !dbg !24 {
entry:
call void @llvm.dbg.value(metadata i32 %argc, metadata !31, metadata !33), !dbg !34
call void @llvm.dbg.value(metadata i8** %argv, metadata !32, metadata !33), !dbg !35
%0 = load i8*, i8** %argv, align 8, !dbg !36, !tbaa !37
%arrayidx1 = getelementptr inbounds i8, i8* %0, i64 1, !dbg !36
%1 = load i8, i8* %arrayidx1, align 1, !dbg !36, !tbaa !39
%conv = sext i8 %1 to i32, !dbg !36
call void @foo(i32 %conv) #2, !dbg !40
%2 = load i8*, i8** %argv, align 8, !dbg !41, !tbaa !37
%arrayidx3 = getelementptr inbounds i8, i8* %2, i64 1, !dbg !41
%3 = load i8, i8* %arrayidx3, align 1, !dbg !41, !tbaa !39
%conv4 = sext i8 %3 to i32, !dbg !41
call void @bar(i32 %conv4) #2, !dbg !42
%4 = load i32, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !dbg !43, !tbaa !17
%conv5 = sext i32 %4 to i64, !dbg !44
%5 = load i64, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !dbg !45, !tbaa !23
%add = add nsw i64 %conv5, %5, !dbg !46
%conv6 = trunc i64 %add to i32, !dbg !44
ret i32 %conv6, !dbg !47
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind optsize ssp uwtable }
attributes #1 = { nounwind readnone speculatable }
attributes #2 = { optsize }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!12, !13, !14, !15}
!llvm.ident = !{!16}
Canonicalize the representation of empty an expression in DIGlobalVariableExpression This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
2017-08-31 02:06:51 +08:00
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
Un-revert r310014: false revert, it wasn't the cause of build break llvm-svn: 310021
2017-08-04 12:51:15 +08:00
!1 = distinct !DIGlobalVariable(name: "static_struct", scope: !2, file: !3, line: 4, type: !6, isLocal: true, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "test.c", directory: "/")
!4 = !{}
!5 = !{!0}
!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mystruct", file: !3, line: 1, size: 128, elements: !7)
!7 = !{!8, !10}
!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 32)
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !11, size: 64, offset: 64)
!11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
!12 = !{i32 2, !"Dwarf Version", i32 4}
!13 = !{i32 2, !"Debug Info Version", i32 3}
!14 = !{i32 1, !"wchar_size", i32 4}
!15 = !{i32 7, !"PIC Level", i32 2}
!16 = !{!"clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)"}
!17 = !{!18, !19, i64 0}
!18 = !{!"mystruct", !19, i64 0, !22, i64 8}
!19 = !{!"int", !20, i64 0}
!20 = !{!"omnipotent char", !21, i64 0}
!21 = !{!"Simple C/C++ TBAA"}
!22 = !{!"long long", !20, i64 0}
!23 = !{!18, !22, i64 8}
[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 10:40:45 +08:00
!24 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !25, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !30)
Un-revert r310014: false revert, it wasn't the cause of build break llvm-svn: 310021
2017-08-04 12:51:15 +08:00
!25 = !DISubroutineType(types: !26)
!26 = !{!9, !9, !27}
!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
!29 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!30 = !{!31, !32}
!31 = !DILocalVariable(name: "argc", arg: 1, scope: !24, file: !3, line: 7, type: !9)
!32 = !DILocalVariable(name: "argv", arg: 2, scope: !24, file: !3, line: 7, type: !27)
!33 = !DIExpression()
!34 = !DILocation(line: 7, column: 14, scope: !24)
!35 = !DILocation(line: 7, column: 27, scope: !24)
!36 = !DILocation(line: 9, column: 9, scope: !24)
!37 = !{!38, !38, i64 0}
!38 = !{!"any pointer", !20, i64 0}
!39 = !{!20, !20, i64 0}
!40 = !DILocation(line: 9, column: 5, scope: !24)
!41 = !DILocation(line: 10, column: 9, scope: !24)
!42 = !DILocation(line: 10, column: 5, scope: !24)
!43 = !DILocation(line: 11, column: 26, scope: !24)
!44 = !DILocation(line: 11, column: 12, scope: !24)
!45 = !DILocation(line: 11, column: 44, scope: !24)
!46 = !DILocation(line: 11, column: 28, scope: !24)
!47 = !DILocation(line: 11, column: 5, scope: !24)