1; Test that coverage instrumentation does not lose debug location. 2 3; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -S | FileCheck %s 4 5; C++ source: 6; 1: struct A { 7; 2: int f(); 8; 3: int x; 9; 4: }; 10; 5: 11; 6: int A::f() { 12; 7: return x; 13; 8: } 14; clang++ ../1.cc -O3 -g -S -emit-llvm -fno-strict-aliasing 15; and add sanitize_address to @_ZN1A1fEv 16 17; Test that __sanitizer_cov call has !dbg pointing to the opening { of A::f(). 18; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]] 19; CHECK: [[A]] = !MDLocation(line: 6, scope: !{{.*}}) 20 21 22target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 23target triple = "x86_64-unknown-linux-gnu" 24 25%struct.A = type { i32 } 26 27; Function Attrs: nounwind readonly uwtable 28define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 { 29entry: 30 tail call void @llvm.dbg.value(metadata %struct.A* %this, i64 0, metadata !15, metadata !{!"0x102"}), !dbg !20 31 %x = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0, !dbg !21 32 %0 = load i32, i32* %x, align 4, !dbg !21 33 ret i32 %0, !dbg !21 34} 35 36; Function Attrs: nounwind readnone 37declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 38 39attributes #0 = { sanitize_address nounwind readonly uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 40attributes #1 = { nounwind readnone } 41 42!llvm.dbg.cu = !{!0} 43!llvm.module.flags = !{!17, !18} 44!llvm.ident = !{!19} 45 46!0 = !{!"0x11\004\00clang version 3.5.0 (210251)\001\00\000\00\001", !1, !2, !3, !12, !2, !2} ; [ DW_TAG_compile_unit ] [/code/llvm/build0/../1.cc] [DW_LANG_C_plus_plus] 47!1 = !{!"../1.cc", !"/code/llvm/build0"} 48!2 = !{} 49!3 = !{!4} 50!4 = !{!"0x13\00A\001\0032\0032\000\000\000", !1, null, null, !5, null, null, !"_ZTS1A"} ; [ DW_TAG_structure_type ] [A] [line 1, size 32, align 32, offset 0] [def] [from ] 51!5 = !{!6, !8} 52!6 = !{!"0xd\00x\003\0032\0032\000\000", !1, !"_ZTS1A", !7} ; [ DW_TAG_member ] [x] [line 3, size 32, align 32, offset 0] [from int] 53!7 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 54!8 = !{!"0x2e\00f\00f\00_ZN1A1fEv\002\000\000\000\006\00256\001\002", !1, !"_ZTS1A", !9, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 2] [f] 55!9 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !10, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 56!10 = !{!7, !11} 57!11 = !{!"0xf\00\000\0064\0064\000\001088", null, null, !"_ZTS1A"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1A] 58!12 = !{!13} 59!13 = !{!"0x2e\00f\00f\00_ZN1A1fEv\006\000\001\000\006\00256\001\006", !1, !"_ZTS1A", !9, null, i32 (%struct.A*)* @_ZN1A1fEv, null, !8, !14} ; [ DW_TAG_subprogram ] [line 6] [def] [f] 60!14 = !{!15} 61!15 = !{!"0x101\00this\0016777216\001088", !13, null, !16} ; [ DW_TAG_arg_variable ] [this] [line 0] 62!16 = !{!"0xf\00\000\0064\0064\000\000", null, null, !"_ZTS1A"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1A] 63!17 = !{i32 2, !"Dwarf Version", i32 4} 64!18 = !{i32 2, !"Debug Info Version", i32 2} 65!19 = !{!"clang version 3.5.0 (210251)"} 66!20 = !MDLocation(line: 0, scope: !13) 67!21 = !MDLocation(line: 7, scope: !13) 68