1 ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
2 ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - --try-experimental-debuginfo-iterators | FileCheck %s
3 ; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
4 ; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - --try-experimental-debuginfo-iterators | FileCheck %s
6 ; Test debug location for the local variables moved onto the unsafe stack.
8 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
9 target triple = "x86_64-unknown-linux-gnu"
11 %struct.S = type { [100 x i8] }
13 ; Function Attrs: safestack uwtable
14 define void @f(ptr byval(%struct.S) align 8 %zzz) #0 !dbg !12 {
15 ; CHECK: define void @f
18 ; CHECK: %[[USP:.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr
20 %xxx = alloca %struct.S, align 1
21 call void @llvm.dbg.declare(metadata ptr %zzz, metadata !18, metadata !19), !dbg !20
22 call void @llvm.dbg.declare(metadata ptr %xxx, metadata !21, metadata !19), !dbg !22
24 ; dbg.declare for %zzz and %xxx are gone; replaced with dbg.declare based off the unsafe stack pointer
25 ; CHECK-NOT: call void @llvm.dbg.declare
26 ; CHECK: call void @llvm.dbg.declare(metadata ptr %[[USP]], metadata ![[VAR_ARG:.*]], metadata !DIExpression(DW_OP_constu, 104, DW_OP_minus))
27 ; CHECK-NOT: call void @llvm.dbg.declare
28 ; CHECK: call void @llvm.dbg.declare(metadata ptr %[[USP]], metadata ![[VAR_LOCAL:.*]], metadata !DIExpression(DW_OP_constu, 208, DW_OP_minus))
29 ; CHECK-NOT: call void @llvm.dbg.declare
31 call void @Capture(ptr %zzz), !dbg !23
32 call void @Capture(ptr %xxx), !dbg !24
34 ; dbg.declare appears before the first use
35 ; CHECK: call void @Capture
36 ; CHECK: call void @Capture
41 ; CHECK-DAG: ![[VAR_ARG]] = !DILocalVariable(name: "zzz"
44 ; CHECK-DAG: ![[VAR_LOCAL]] = !DILocalVariable(name: "xxx"
46 ; Function Attrs: nounwind readnone
47 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
49 declare void @Capture(ptr) #2
51 attributes #0 = { safestack uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
52 attributes #1 = { nounwind readnone }
53 attributes #2 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
56 !llvm.module.flags = !{!15, !16}
59 !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)
60 !1 = !DIFile(filename: "../llvm/2.cc", directory: "/code/build-llvm")
63 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !1, line: 4, size: 800, align: 8, elements: !5, identifier: "_ZTS1S")
65 !6 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !4, file: !1, line: 5, baseType: !7, size: 800, align: 8)
66 !7 = !DICompositeType(tag: DW_TAG_array_type, baseType: !8, size: 800, align: 8, elements: !9)
67 !8 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
69 !10 = !DISubrange(count: 100)
70 !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)
71 !13 = !DISubroutineType(types: !14)
73 !15 = !{i32 2, !"Dwarf Version", i32 4}
74 !16 = !{i32 2, !"Debug Info Version", i32 3}
75 !17 = !{!"clang version 3.8.0 (trunk 254019) (llvm/trunk 254036)"}
76 !18 = !DILocalVariable(name: "zzz", arg: 1, scope: !12, file: !1, line: 10, type: !4)
78 !20 = !DILocation(line: 10, column: 10, scope: !12)
79 !21 = !DILocalVariable(name: "xxx", scope: !12, file: !1, line: 11, type: !4)
80 !22 = !DILocation(line: 11, column: 5, scope: !12)
81 !23 = !DILocation(line: 12, column: 3, scope: !12)
82 !24 = !DILocation(line: 13, column: 3, scope: !12)
83 !25 = !DILocation(line: 14, column: 1, scope: !12)