mirror of
https://github.com/RPCS3/llvm.git
synced 2026-08-28 05:10:05 -04:00
Adrian Prantl
69e607f200
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%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312144 91177308-0d34-0410-b5e6-96231b3b80d8
131 lines
6.0 KiB
LLVM
131 lines
6.0 KiB
LLVM
; RUN: opt -S -globalopt < %s | FileCheck %s
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source_filename = "test.c"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.12.0"
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%struct.mystruct = type { i32, i64 }
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; Generated at -Os from:
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;
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; static struct mystruct {
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; int a;
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; long long int b;
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; } static_struct;
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; void __attribute__((nodebug)) foo(int in) { static_struct.a = in; }
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; void __attribute__((nodebug)) bar(int in) { static_struct.b = in; }
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; int main(int argc, char **argv)
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; {
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; foo(argv[0][1]);
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; bar(argv[0][1]);
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; return static_struct.a + static_struct.b;
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; }
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; CHECK: @static_struct.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL0:.*]]
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; CHECK: @static_struct.1 = internal unnamed_addr global i64 0, align 8, !dbg ![[EL1:.*]]
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; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32))
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; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "static_struct"
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; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 32, 64))
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@static_struct = internal global %struct.mystruct zeroinitializer, align 8, !dbg !0
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; Function Attrs: nounwind optsize ssp uwtable
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define void @foo(i32 %in) #0 {
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entry:
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store i32 %in, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !tbaa !17
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ret void
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}
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; Function Attrs: nounwind optsize ssp uwtable
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define void @bar(i32 %in) #0 {
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entry:
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%conv = sext i32 %in to i64
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store i64 %conv, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !tbaa !23
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ret void
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}
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; Function Attrs: nounwind optsize ssp uwtable
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define i32 @main(i32 %argc, i8** %argv) #0 !dbg !24 {
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entry:
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call void @llvm.dbg.value(metadata i32 %argc, metadata !31, metadata !33), !dbg !34
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call void @llvm.dbg.value(metadata i8** %argv, metadata !32, metadata !33), !dbg !35
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%0 = load i8*, i8** %argv, align 8, !dbg !36, !tbaa !37
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%arrayidx1 = getelementptr inbounds i8, i8* %0, i64 1, !dbg !36
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%1 = load i8, i8* %arrayidx1, align 1, !dbg !36, !tbaa !39
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%conv = sext i8 %1 to i32, !dbg !36
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call void @foo(i32 %conv) #2, !dbg !40
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%2 = load i8*, i8** %argv, align 8, !dbg !41, !tbaa !37
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%arrayidx3 = getelementptr inbounds i8, i8* %2, i64 1, !dbg !41
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%3 = load i8, i8* %arrayidx3, align 1, !dbg !41, !tbaa !39
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%conv4 = sext i8 %3 to i32, !dbg !41
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call void @bar(i32 %conv4) #2, !dbg !42
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%4 = load i32, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !dbg !43, !tbaa !17
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%conv5 = sext i32 %4 to i64, !dbg !44
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%5 = load i64, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !dbg !45, !tbaa !23
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%add = add nsw i64 %conv5, %5, !dbg !46
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%conv6 = trunc i64 %add to i32, !dbg !44
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ret i32 %conv6, !dbg !47
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind optsize ssp uwtable }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { optsize }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!12, !13, !14, !15}
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!llvm.ident = !{!16}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "static_struct", scope: !2, file: !3, line: 4, type: !6, isLocal: true, isDefinition: true)
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!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)
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!3 = !DIFile(filename: "test.c", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mystruct", file: !3, line: 1, size: 128, elements: !7)
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!7 = !{!8, !10}
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 32)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !11, size: 64, offset: 64)
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!11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
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!12 = !{i32 2, !"Dwarf Version", i32 4}
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!13 = !{i32 2, !"Debug Info Version", i32 3}
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!14 = !{i32 1, !"wchar_size", i32 4}
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!15 = !{i32 7, !"PIC Level", i32 2}
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!16 = !{!"clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)"}
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!17 = !{!18, !19, i64 0}
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!18 = !{!"mystruct", !19, i64 0, !22, i64 8}
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!19 = !{!"int", !20, i64 0}
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!20 = !{!"omnipotent char", !21, i64 0}
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!21 = !{!"Simple C/C++ TBAA"}
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!22 = !{!"long long", !20, i64 0}
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!23 = !{!18, !22, i64 8}
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!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, variables: !30)
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!25 = !DISubroutineType(types: !26)
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!26 = !{!9, !9, !27}
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!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
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!29 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!30 = !{!31, !32}
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!31 = !DILocalVariable(name: "argc", arg: 1, scope: !24, file: !3, line: 7, type: !9)
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!32 = !DILocalVariable(name: "argv", arg: 2, scope: !24, file: !3, line: 7, type: !27)
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!33 = !DIExpression()
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!34 = !DILocation(line: 7, column: 14, scope: !24)
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!35 = !DILocation(line: 7, column: 27, scope: !24)
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!36 = !DILocation(line: 9, column: 9, scope: !24)
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!37 = !{!38, !38, i64 0}
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!38 = !{!"any pointer", !20, i64 0}
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!39 = !{!20, !20, i64 0}
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!40 = !DILocation(line: 9, column: 5, scope: !24)
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!41 = !DILocation(line: 10, column: 9, scope: !24)
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!42 = !DILocation(line: 10, column: 5, scope: !24)
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!43 = !DILocation(line: 11, column: 26, scope: !24)
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!44 = !DILocation(line: 11, column: 12, scope: !24)
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!45 = !DILocation(line: 11, column: 44, scope: !24)
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!46 = !DILocation(line: 11, column: 28, scope: !24)
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!47 = !DILocation(line: 11, column: 5, scope: !24)
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