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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
73 lines
3.3 KiB
LLVM
73 lines
3.3 KiB
LLVM
; RUN: llc < %s -O0 -verify-machineinstrs -mtriple=wasm32-unknown-unknown-wasm | FileCheck %s
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; CHECK: BB#0
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; CHECK: #DEBUG_VALUE: usage:self <- %vreg4
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; CHECK: BB#1
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; CHECK: DW_TAG_variable
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source_filename = "test/CodeGen/WebAssembly/dbgvalue.ll"
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown-wasm"
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@key = external local_unnamed_addr global [15 x i8], align 1
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@.str = external unnamed_addr constant [33 x i8], align 1
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define internal i32 @0(i8*) local_unnamed_addr !dbg !15 !type !23 {
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tail call void @llvm.dbg.value(metadata i8* %0, i64 0, metadata !22, metadata !24), !dbg !25
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%2 = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str, i32 0, i32 0), i8* %0), !dbg !26
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br i1 true, label %a, label %b
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a: ; preds = %1
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%3 = add i32 %2, %2
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br label %c
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b: ; preds = %1
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%4 = sub i32 %2, %2
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br label %c
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c: ; preds = %b, %a
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%5 = phi i32 [ %3, %a ], [ %4, %b ]
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%6 = add i32 ptrtoint (i32 (i8*)* @0 to i32), %5
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ret i32 %6, !dbg !27
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}
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declare i32 @printf(i8* nocapture readonly, ...) local_unnamed_addr
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #0
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attributes #0 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!12, !13}
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!llvm.ident = !{!14}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273884) (llvm/trunk 273897)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
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!1 = !DIFile(filename: "crash.c", directory: "wasm/tests")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
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!5 = !DIGlobalVariable(name: "key", scope: !0, file: !1, line: 7, type: !6, isLocal: false, isDefinition: true)
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!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 120, align: 8, elements: !10)
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!7 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !8, line: 185, baseType: !9)
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!8 = !DIFile(filename: "wasm/emscripten/system/include/libc/bits/alltypes.h", directory: "wasm/tests")
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!9 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
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!10 = !{!11}
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!11 = !DISubrange(count: 15)
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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 = !{!"clang version 3.9.0 (trunk 273884) (llvm/trunk 273897)"}
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!15 = distinct !DISubprogram(name: "usage", scope: !1, file: !1, line: 15, type: !16, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !21)
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!16 = !DISubroutineType(types: !17)
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!17 = !{!18, !19}
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!18 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 32, align: 32)
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!20 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!21 = !{!22}
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!22 = !DILocalVariable(name: "self", arg: 1, scope: !15, file: !1, line: 15, type: !19)
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!23 = !{i64 0, !"_ZTSFiPcE"}
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!24 = !DIExpression()
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!25 = !DILocation(line: 15, column: 17, scope: !15)
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!26 = !DILocation(line: 16, column: 3, scope: !15)
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!27 = !DILocation(line: 17, column: 3, scope: !15)
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