1; RUN: not llc -mtriple=bpfel < %s 2>&1 >/dev/null | FileCheck %s 2 3;; CHECK-NOT: nowarn 4define void @nowarn() local_unnamed_addr #0 !dbg !6 { 5 %1 = alloca [504 x i8], align 1 6 call void @llvm.lifetime.start.p0(i64 504, ptr nonnull %1) #4, !dbg !15 7 tail call void @llvm.dbg.declare(metadata ptr %1, metadata !10, metadata !16), !dbg !17 8 call void @doit(ptr nonnull %1) #4, !dbg !18 9 call void @llvm.lifetime.end.p0(i64 504, ptr nonnull %1) #4, !dbg !19 10 ret void, !dbg !19 11} 12 13; Function Attrs: argmemonly nounwind 14declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #1 15 16; Function Attrs: nounwind readnone 17declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 18 19declare void @doit(ptr) local_unnamed_addr #3 20 21; Function Attrs: argmemonly nounwind 22declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #1 23 24; CHECK: error: warn_stack.c 25; CHECK: BPF stack limit 26define void @warn() local_unnamed_addr #0 !dbg !20 { 27 %1 = alloca [512 x i8], align 1 28 call void @llvm.lifetime.start.p0(i64 512, ptr nonnull %1) #4, !dbg !26 29 tail call void @llvm.dbg.declare(metadata ptr %1, metadata !22, metadata !16), !dbg !27 30 call void @doit(ptr nonnull %1) #4, !dbg !28 31 call void @llvm.lifetime.end.p0(i64 512, ptr nonnull %1) #4, !dbg !29 32 ret void, !dbg !29 33} 34 35attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 36attributes #1 = { argmemonly nounwind } 37attributes #2 = { nounwind readnone } 38attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 39attributes #4 = { nounwind } 40 41!llvm.dbg.cu = !{!0} 42!llvm.module.flags = !{!3, !4} 43!llvm.ident = !{!5} 44 45!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 292141) (llvm/trunk 292156)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 46!1 = !DIFile(filename: "warn_stack.c", directory: "/w/llvm/bld") 47!2 = !{} 48!3 = !{i32 2, !"Dwarf Version", i32 4} 49!4 = !{i32 2, !"Debug Info Version", i32 3} 50!5 = !{!"clang version 5.0.0 (trunk 292141) (llvm/trunk 292156)"} 51!6 = distinct !DISubprogram(name: "nowarn", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !9) 52!7 = !DISubroutineType(types: !8) 53!8 = !{null} 54!9 = !{!10} 55!10 = !DILocalVariable(name: "buf", scope: !6, file: !1, line: 4, type: !11) 56!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4088, elements: !13) 57!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 58!13 = !{!14} 59!14 = !DISubrange(count: 504) 60!15 = !DILocation(line: 4, column: 2, scope: !6) 61!16 = !DIExpression() 62!17 = !DILocation(line: 4, column: 7, scope: !6) 63!18 = !DILocation(line: 5, column: 2, scope: !6) 64!19 = !DILocation(line: 6, column: 1, scope: !6) 65!20 = distinct !DISubprogram(name: "warn", scope: !1, file: !1, line: 7, type: !7, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !21) 66!21 = !{!22} 67!22 = !DILocalVariable(name: "buf", scope: !20, file: !1, line: 9, type: !23) 68!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4096, elements: !24) 69!24 = !{!25} 70!25 = !DISubrange(count: 512) 71!26 = !DILocation(line: 9, column: 2, scope: !20) 72!27 = !DILocation(line: 9, column: 7, scope: !20) 73!28 = !DILocation(line: 10, column: 2, scope: !20) 74!29 = !DILocation(line: 11, column: 1, scope: !20) 75