1; Test that coverage instrumentation does not lose debug location. 2 3; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -S | FileCheck %s 4 5; C++ source: 6; 1: void foo(int *a) { 7; 2: if (a) 8; 3: *a = 0; 9; 4: } 10; clang++ if.cc -O3 -g -S -emit-llvm 11; and add sanitize_address to @_Z3fooPi 12 13 14target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 15target triple = "x86_64-unknown-linux-gnu" 16 17; Check that __sanitizer_cov call has !dgb pointing to the beginning 18; of appropriate basic blocks. 19; CHECK-LABEL:_Z3fooPi 20; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]] 21; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[B:!.*]] 22; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[C:!.*]] 23; CHECK: ret void 24; CHECK: [[A]] = !MDLocation(line: 1, scope: !{{.*}}) 25; CHECK: [[B]] = !MDLocation(line: 3, column: 5, scope: !{{.*}}) 26; CHECK: [[C]] = !MDLocation(line: 4, column: 1, scope: !{{.*}}) 27 28define void @_Z3fooPi(i32* %a) #0 { 29entry: 30 tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !{!"0x102"}), !dbg !15 31 %tobool = icmp eq i32* %a, null, !dbg !16 32 br i1 %tobool, label %if.end, label %if.then, !dbg !16 33 34if.then: ; preds = %entry 35 store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19 36 br label %if.end, !dbg !18 37 38if.end: ; preds = %entry, %if.then 39 ret void, !dbg !23 40} 41 42; Function Attrs: nounwind readnone 43declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 44 45attributes #0 = { nounwind 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" sanitize_address} 46attributes #1 = { nounwind readnone } 47 48!llvm.dbg.cu = !{!0} 49!llvm.module.flags = !{!12, !13} 50!llvm.ident = !{!14} 51 52!0 = !{!"0x11\004\00clang version 3.6.0 (217079)\001\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [FOO/if.cc] [DW_LANG_C_plus_plus] 53!1 = !{!"if.cc", !"FOO"} 54!2 = !{} 55!3 = !{!4} 56!4 = !{!"0x2e\00foo\00foo\00_Z3fooPi\001\000\001\000\006\00256\001\001", !1, !5, !6, null, void (i32*)* @_Z3fooPi, null, null, !10} ; [ DW_TAG_subprogram ] [line 1] [def] [foo] 57!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [FOO/if.cc] 58!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 59!7 = !{null, !8} 60!8 = !{!"0xf\00\000\0064\0064\000\000", null, null, !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int] 61!9 = !{!"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] 62!10 = !{!11} 63!11 = !{!"0x101\00a\0016777217\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [a] [line 1] 64!12 = !{i32 2, !"Dwarf Version", i32 4} 65!13 = !{i32 2, !"Debug Info Version", i32 2} 66!14 = !{!"clang version 3.6.0 (217079)"} 67!15 = !MDLocation(line: 1, column: 15, scope: !4) 68!16 = !MDLocation(line: 2, column: 7, scope: !17) 69!17 = !{!"0xb\002\007\000", !1, !4} ; [ DW_TAG_lexical_block ] [FOO/if.cc] 70!18 = !MDLocation(line: 3, column: 5, scope: !17) 71!19 = !{!20, !20, i64 0} 72!20 = !{!"int", !21, i64 0} 73!21 = !{!"omnipotent char", !22, i64 0} 74!22 = !{!"Simple C/C++ TBAA"} 75!23 = !MDLocation(line: 4, column: 1, scope: !4) 76