| ; RUN: opt -safe-stack -safestack-use-pointer-address < %s -S | FileCheck %s |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "armv7-pc-linux-android" |
| |
| ; Original C used to generate debug info: |
| ; char*** addr; |
| ; char** __safestack_pointer_address() { |
| ; return *addr; |
| ; } |
| ; void Capture(char*x); |
| ; void f() { char c[16]; Capture(c); } |
| |
| ; CHECK: !35 = !DILocation(line: 3, column: 11, scope: !17, inlinedAt: !36) |
| ; CHECK: !36 = distinct !DILocation(line: 6, scope: !27) |
| |
| @addr = common local_unnamed_addr global i8*** null, align 4, !dbg !0 |
| |
| ; Function Attrs: norecurse nounwind readonly safestack |
| define i8** @__safestack_pointer_address() local_unnamed_addr #0 !dbg !17 { |
| entry: |
| %0 = load i8***, i8**** @addr, align 4, !dbg !20, !tbaa !21 |
| %1 = load i8**, i8*** %0, align 4, !dbg !25, !tbaa !21 |
| ret i8** %1, !dbg !26 |
| } |
| |
| ; Function Attrs: nounwind safestack |
| define void @f() local_unnamed_addr #1 !dbg !27 { |
| entry: |
| %c = alloca [16 x i8], align 1 |
| %0 = getelementptr inbounds [16 x i8], [16 x i8]* %c, i32 0, i32 0, !dbg !35 |
| call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0) #5, !dbg !35 |
| call void @llvm.dbg.declare(metadata [16 x i8]* %c, metadata !31, metadata !DIExpression()), !dbg !36 |
| call void @Capture(i8* nonnull %0) #5, !dbg !37 |
| call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0) #5, !dbg !38 |
| ret void, !dbg !38 |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #3 |
| |
| declare void @Capture(i8*) local_unnamed_addr #4 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2 |
| |
| attributes #0 = { norecurse nounwind readonly safestack "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" "target-cpu"="generic" "target-features"="+armv7-a,+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind safestack "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" "target-cpu"="generic" "target-features"="+armv7-a,+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { argmemonly nounwind } |
| attributes #3 = { nounwind readnone speculatable } |
| attributes #4 = { "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" "target-cpu"="generic" "target-features"="+armv7-a,+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #5 = { nounwind } |
| |
| !llvm.dbg.cu = !{!2} |
| !llvm.module.flags = !{!11, !12, !13, !14, !15} |
| !llvm.ident = !{!16} |
| |
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) |
| !1 = distinct !DIGlobalVariable(name: "addr", scope: !2, file: !6, line: 1, type: !7, isLocal: false, isDefinition: true) |
| !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) |
| !3 = !DIFile(filename: "-", directory: "/") |
| !4 = !{} |
| !5 = !{!0} |
| !6 = !DIFile(filename: "<stdin>", directory: "/") |
| !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 32) |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32) |
| !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32) |
| !10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_unsigned_char) |
| !11 = !{i32 2, !"Dwarf Version", i32 4} |
| !12 = !{i32 2, !"Debug Info Version", i32 3} |
| !13 = !{i32 1, !"wchar_size", i32 4} |
| !14 = !{i32 1, !"min_enum_size", i32 4} |
| !15 = !{i32 7, !"PIC Level", i32 1} |
| !16 = !{!"clang"} |
| !17 = distinct !DISubprogram(name: "__safestack_pointer_address", scope: !6, file: !6, line: 2, type: !18, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !2, retainedNodes: !4) |
| !18 = !DISubroutineType(types: !19) |
| !19 = !{!8} |
| !20 = !DILocation(line: 3, column: 11, scope: !17) |
| !21 = !{!22, !22, i64 0} |
| !22 = !{!"any pointer", !23, i64 0} |
| !23 = !{!"omnipotent char", !24, i64 0} |
| !24 = !{!"Simple C/C++ TBAA"} |
| !25 = !DILocation(line: 3, column: 10, scope: !17) |
| !26 = !DILocation(line: 3, column: 3, scope: !17) |
| !27 = distinct !DISubprogram(name: "f", scope: !6, file: !6, line: 6, type: !28, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, retainedNodes: !30) |
| !28 = !DISubroutineType(types: !29) |
| !29 = !{null} |
| !30 = !{!31} |
| !31 = !DILocalVariable(name: "c", scope: !27, file: !6, line: 6, type: !32) |
| !32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, size: 128, elements: !33) |
| !33 = !{!34} |
| !34 = !DISubrange(count: 16) |
| !35 = !DILocation(line: 6, column: 12, scope: !27) |
| !36 = !DILocation(line: 6, column: 17, scope: !27) |
| !37 = !DILocation(line: 6, column: 24, scope: !27) |
| !38 = !DILocation(line: 6, column: 36, scope: !27) |