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7d6813a6c8
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
106 lines
4.4 KiB
LLVM
106 lines
4.4 KiB
LLVM
; RUN: llc -filetype=asm -fast-isel=false -O0 < %s | FileCheck %s
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;
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; Generated by:
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; clang -emit-llvm -S -g test.cpp
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; typedef double fp_t;
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; typedef unsigned long int_t;
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;
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; int_t glb_start = 17;
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; int_t glb_end = 42;
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;
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; int main()
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; {
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; int_t start = glb_start;
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; int_t end = glb_end;
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;
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; fp_t dbl_start = (fp_t) start;
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; fp_t dbl_end = (fp_t) end;
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;
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; return 0;
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; }
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; SelectionDAG performs CSE on constant pool loads. Make sure line numbers
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; from such nodes are not propagated. Doing so results in oscillating line numbers.
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; CHECK: .loc 1 12
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; CHECK: .loc 1 13
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; CHECK-NOT: .loc 1 12
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; ModuleID = 't.cpp'
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source_filename = "test/DebugInfo/X86/isel-cse-line.ll"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@glb_start = global i64 17, align 8, !dbg !0
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@glb_end = global i64 42, align 8, !dbg !9
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define i32 @main() !dbg !16 {
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%1 = alloca i32, align 4
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%2 = alloca i64, align 8
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%3 = alloca i64, align 8
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%4 = alloca double, align 8
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%5 = alloca double, align 8
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store i32 0, i32* %1, align 4
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call void @llvm.dbg.declare(metadata i64* %2, metadata !20, metadata !21), !dbg !22
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%6 = load i64, i64* @glb_start, align 8, !dbg !23
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store i64 %6, i64* %2, align 8, !dbg !22
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call void @llvm.dbg.declare(metadata i64* %3, metadata !24, metadata !21), !dbg !25
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%7 = load i64, i64* @glb_end, align 8, !dbg !26
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store i64 %7, i64* %3, align 8, !dbg !25
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call void @llvm.dbg.declare(metadata double* %4, metadata !27, metadata !21), !dbg !28
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%8 = load i64, i64* %2, align 8, !dbg !29
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%9 = uitofp i64 %8 to double, !dbg !29
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store double %9, double* %4, align 8, !dbg !28
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call void @llvm.dbg.declare(metadata double* %5, metadata !30, metadata !21), !dbg !31
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%10 = load i64, i64* %3, align 8, !dbg !32
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%11 = uitofp i64 %10 to double, !dbg !32
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store double %11, double* %5, align 8, !dbg !31
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ret i32 0, !dbg !33
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
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attributes #0 = { nounwind readnone }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!13, !14}
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!llvm.ident = !{!15}
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!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "glb_start", scope: !2, file: !3, line: 4, type: !11, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.9.0 (trunk 268246)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !8)
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!3 = !DIFile(filename: "/home/wpieb/test/D12094.cpp", directory: "/home/wpieb/build/llvm/trunk/llvm-RelWithDebInfo")
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!4 = !{}
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!5 = !{!6}
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!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "fp_t", file: !3, line: 1, baseType: !7)
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!7 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
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!8 = !{!0, !9}
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!9 = distinct !DIGlobalVariableExpression(var: !10, expr: !DIExpression())
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!10 = !DIGlobalVariable(name: "glb_end", scope: !2, file: !3, line: 5, type: !11, isLocal: false, isDefinition: true)
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!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "int_t", file: !3, line: 2, baseType: !12)
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!12 = !DIBasicType(name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{i32 2, !"Debug Info Version", i32 3}
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!15 = !{!"clang version 3.9.0 (trunk 268246)"}
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!16 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !17, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !4)
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!17 = !DISubroutineType(types: !18)
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!18 = !{!19}
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!19 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!20 = !DILocalVariable(name: "start", scope: !16, file: !3, line: 9, type: !11)
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!21 = !DIExpression()
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!22 = !DILocation(line: 9, column: 9, scope: !16)
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!23 = !DILocation(line: 9, column: 17, scope: !16)
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!24 = !DILocalVariable(name: "end", scope: !16, file: !3, line: 10, type: !11)
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!25 = !DILocation(line: 10, column: 9, scope: !16)
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!26 = !DILocation(line: 10, column: 17, scope: !16)
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!27 = !DILocalVariable(name: "dbl_start", scope: !16, file: !3, line: 12, type: !6)
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!28 = !DILocation(line: 12, column: 8, scope: !16)
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!29 = !DILocation(line: 12, column: 27, scope: !16)
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!30 = !DILocalVariable(name: "dbl_end", scope: !16, file: !3, line: 13, type: !6)
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!31 = !DILocation(line: 13, column: 8, scope: !16)
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!32 = !DILocation(line: 13, column: 27, scope: !16)
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!33 = !DILocation(line: 15, column: 3, scope: !16)
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