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1; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s2; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s3 4; Test debug location for the local variables moved onto the unsafe stack.5 6target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"7target triple = "x86_64-unknown-linux-gnu"8 9%struct.S = type { [100 x i8] }10 11; Function Attrs: safestack uwtable12define void @f(ptr byval(%struct.S) align 8 %zzz) #0 !dbg !12 {13; CHECK: define void @f14 15entry:16; CHECK: %[[USP:.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr17 18 %xxx = alloca %struct.S, align 119 call void @llvm.dbg.declare(metadata ptr %zzz, metadata !18, metadata !19), !dbg !2020 call void @llvm.dbg.declare(metadata ptr %xxx, metadata !21, metadata !19), !dbg !2221 22; dbg.declare for %zzz and %xxx are gone; replaced with dbg.declare based off the unsafe stack pointer23; CHECK-NOT: #dbg_declare24; CHECK: #dbg_declare(ptr %[[USP]], ![[VAR_ARG:.*]], !DIExpression(DW_OP_constu, 104, DW_OP_minus),25; CHECK-NOT: #dbg_declare26; CHECK: #dbg_declare(ptr %[[USP]], ![[VAR_LOCAL:.*]], !DIExpression(DW_OP_constu, 208, DW_OP_minus),27; CHECK-NOT: #dbg_declare28 29 call void @Capture(ptr %zzz), !dbg !2330 call void @Capture(ptr %xxx), !dbg !2431 32; dbg.declare appears before the first use33; CHECK: call void @Capture34; CHECK: call void @Capture35 36 ret void, !dbg !2537}38 39; CHECK-DAG: ![[VAR_ARG]] = !DILocalVariable(name: "zzz"40; 100 aligned up to 841 42; CHECK-DAG: ![[VAR_LOCAL]] = !DILocalVariable(name: "xxx"43 44; Function Attrs: nounwind readnone45declare void @llvm.dbg.declare(metadata, metadata, metadata) #146 47declare void @Capture(ptr)48 49attributes #0 = { safestack uwtable }50attributes #1 = { nounwind readnone }51 52!llvm.dbg.cu = !{!0}53!llvm.module.flags = !{!15, !16}54!llvm.ident = !{!17}55 56!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 254019) (llvm/trunk 254036)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)57!1 = !DIFile(filename: "../llvm/2.cc", directory: "/code/build-llvm")58!2 = !{}59!3 = !{!4}60!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !1, line: 4, size: 800, align: 8, elements: !5, identifier: "_ZTS1S")61!5 = !{!6}62!6 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !4, file: !1, line: 5, baseType: !7, size: 800, align: 8)63!7 = !DICompositeType(tag: DW_TAG_array_type, baseType: !8, size: 800, align: 8, elements: !9)64!8 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)65!9 = !{!10}66!10 = !DISubrange(count: 100)67!12 = distinct !DISubprogram(name: "f", linkageName: "_Z1f1S", scope: !1, file: !1, line: 10, type: !13, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)68!13 = !DISubroutineType(types: !14)69!14 = !{null, !4}70!15 = !{i32 2, !"Dwarf Version", i32 4}71!16 = !{i32 2, !"Debug Info Version", i32 3}72!17 = !{!"clang version 3.8.0 (trunk 254019) (llvm/trunk 254036)"}73!18 = !DILocalVariable(name: "zzz", arg: 1, scope: !12, file: !1, line: 10, type: !4)74!19 = !DIExpression()75!20 = !DILocation(line: 10, column: 10, scope: !12)76!21 = !DILocalVariable(name: "xxx", scope: !12, file: !1, line: 11, type: !4)77!22 = !DILocation(line: 11, column: 5, scope: !12)78!23 = !DILocation(line: 12, column: 3, scope: !12)79!24 = !DILocation(line: 13, column: 3, scope: !12)80!25 = !DILocation(line: 14, column: 1, scope: !12)81