1 files changed, 67 insertions, 0 deletions
diff --git a/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll b/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll
new file mode 100644
index 000000000000..a1b23f1b13f2
--- /dev/null
+++ b/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll
@@ -0,0 +1,67 @@
+; Test that coverage instrumentation does not lose debug location.
+
+; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -S | FileCheck %s
+
+; C++ source:
+; 1: struct A {
+; 2:  int f();
+; 3:  int x;
+; 4: };
+; 5:
+; 6: int A::f() {
+; 7:    return x;
+; 8: }
+; clang++ ../1.cc -O3 -g -S -emit-llvm  -fno-strict-aliasing
+; and add sanitize_address to @_ZN1A1fEv
+
+; Test that __sanitizer_cov call has !dbg pointing to the opening { of A::f().
+; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]]
+; CHECK: [[A]] = !MDLocation(line: 6, scope: !{{.*}})
+
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+%struct.A = type { i32 }
+
+; Function Attrs: nounwind readonly uwtable
+define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 {
+entry:
+  tail call void @llvm.dbg.value(metadata %struct.A* %this, i64 0, metadata !15, metadata !{!"0x102"}), !dbg !20
+  %x = getelementptr inbounds %struct.A* %this, i64 0, i32 0, !dbg !21
+  %0 = load i32* %x, align 4, !dbg !21
+  ret i32 %0, !dbg !21
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #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" }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!17, !18}
+!llvm.ident = !{!19}
+
+!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]
+!1 = !{!"../1.cc", !"/code/llvm/build0"}
+!2 = !{}
+!3 = !{!4}
+!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 ]
+!5 = !{!6, !8}
+!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]
+!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]
+!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]
+!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 ]
+!10 = !{!7, !11}
+!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]
+!12 = !{!13}
+!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]
+!14 = !{!15}
+!15 = !{!"0x101\00this\0016777216\001088", !13, null, !16} ; [ DW_TAG_arg_variable ] [this] [line 0]
+!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]
+!17 = !{i32 2, !"Dwarf Version", i32 4}
+!18 = !{i32 2, !"Debug Info Version", i32 2}
+!19 = !{!"clang version 3.5.0 (210251)"}
+!20 = !MDLocation(line: 0, scope: !13)
+!21 = !MDLocation(line: 7, scope: !13)