1 ; RUN: not llc -march=bpfel < %s 2>&1 >/dev/null | FileCheck %s 2 3 ;; CHECK-NOT: nowarn 4 define void @nowarn() local_unnamed_addr #0 !dbg !6 { 5 %1 = alloca [504 x i8], align 1 6 %2 = getelementptr inbounds [504 x i8], [504 x i8]* %1, i64 0, i64 0, !dbg !15 7 call void @llvm.lifetime.start.p0i8(i64 504, i8* nonnull %2) #4, !dbg !15 8 tail call void @llvm.dbg.declare(metadata [504 x i8]* %1, metadata !10, metadata !16), !dbg !17 9 call void @doit(i8* nonnull %2) #4, !dbg !18 10 call void @llvm.lifetime.end.p0i8(i64 504, i8* nonnull %2) #4, !dbg !19 11 ret void, !dbg !19 12 } 13 14 ; Function Attrs: argmemonly nounwind 15 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 16 17 ; Function Attrs: nounwind readnone 18 declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 19 20 declare void @doit(i8*) local_unnamed_addr #3 21 22 ; Function Attrs: argmemonly nounwind 23 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 24 25 ; CHECK: error: warn_stack.c 26 ; CHECK: BPF stack limit 27 define void @warn() local_unnamed_addr #0 !dbg !20 { 28 %1 = alloca [512 x i8], align 1 29 %2 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 0, !dbg !26 30 call void @llvm.lifetime.start.p0i8(i64 512, i8* nonnull %2) #4, !dbg !26 31 tail call void @llvm.dbg.declare(metadata [512 x i8]* %1, metadata !22, metadata !16), !dbg !27 32 call void @doit(i8* nonnull %2) #4, !dbg !28 33 call void @llvm.lifetime.end.p0i8(i64 512, i8* nonnull %2) #4, !dbg !29 34 ret void, !dbg !29 35 } 36 37 attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" } 38 attributes #1 = { argmemonly nounwind } 39 attributes #2 = { nounwind readnone } 40 attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" } 41 attributes #4 = { nounwind } 42 43 !llvm.dbg.cu = !{!0} 44 !llvm.module.flags = !{!3, !4} 45 !llvm.ident = !{!5} 46 47 !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) 48 !1 = !DIFile(filename: "warn_stack.c", directory: "/w/llvm/bld") 49 !2 = !{} 50 !3 = !{i32 2, !"Dwarf Version", i32 4} 51 !4 = !{i32 2, !"Debug Info Version", i32 3} 52 !5 = !{!"clang version 5.0.0 (trunk 292141) (llvm/trunk 292156)"} 53 !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) 54 !7 = !DISubroutineType(types: !8) 55 !8 = !{null} 56 !9 = !{!10} 57 !10 = !DILocalVariable(name: "buf", scope: !6, file: !1, line: 4, type: !11) 58 !11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4088, elements: !13) 59 !12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 60 !13 = !{!14} 61 !14 = !DISubrange(count: 504) 62 !15 = !DILocation(line: 4, column: 2, scope: !6) 63 !16 = !DIExpression() 64 !17 = !DILocation(line: 4, column: 7, scope: !6) 65 !18 = !DILocation(line: 5, column: 2, scope: !6) 66 !19 = !DILocation(line: 6, column: 1, scope: !6) 67 !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) 68 !21 = !{!22} 69 !22 = !DILocalVariable(name: "buf", scope: !20, file: !1, line: 9, type: !23) 70 !23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4096, elements: !24) 71 !24 = !{!25} 72 !25 = !DISubrange(count: 512) 73 !26 = !DILocation(line: 9, column: 2, scope: !20) 74 !27 = !DILocation(line: 9, column: 7, scope: !20) 75 !28 = !DILocation(line: 10, column: 2, scope: !20) 76 !29 = !DILocation(line: 11, column: 1, scope: !20) 77
