vendor/llvm/llvm-release_360-r226102

1 files changed, 75 insertions, 0 deletions

diff --git a/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll b/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll
new file mode 100644
index 0000000000000..cb436a8c948ce
--- /dev/null
+++ b/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll
@@ -0,0 +1,75 @@
+; Test that coverage instrumentation does not lose debug location.
+
+; RUN: opt < %s -sancov  -sanitizer-coverage-level=2 -S | FileCheck %s
+
+; C++ source:
+; 1: void foo(int *a) {
+; 2:     if (a)
+; 3:         *a = 0;
+; 4: }
+; clang++ if.cc -O3 -g -S -emit-llvm
+; and add sanitize_address to @_Z3fooPi
+
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Check that __sanitizer_cov call has !dgb pointing to the beginning
+; of appropriate basic blocks.
+; CHECK-LABEL:_Z3fooPi
+; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]]
+; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[B:!.*]]
+; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[C:!.*]]
+; CHECK: ret void
+; CHECK: [[A]] = !MDLocation(line: 1, scope: !{{.*}})
+; CHECK: [[B]] = !MDLocation(line: 3, column: 5, scope: !{{.*}})
+; CHECK: [[C]] = !MDLocation(line: 4, column: 1, scope: !{{.*}})
+
+define void @_Z3fooPi(i32* %a) #0 {
+entry:
+  tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !{!"0x102"}), !dbg !15
+  %tobool = icmp eq i32* %a, null, !dbg !16
+  br i1 %tobool, label %if.end, label %if.then, !dbg !16
+
+if.then:                                          ; preds = %entry
+  store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19
+  br label %if.end, !dbg !18
+
+if.end:                                           ; preds = %entry, %if.then
+  ret void, !dbg !23
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #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}
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!12, !13}
+!llvm.ident = !{!14}
+
+!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]
+!1 = !{!"if.cc", !"FOO"}
+!2 = !{}
+!3 = !{!4}
+!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]
+!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [FOO/if.cc]
+!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 ]
+!7 = !{null, !8}
+!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]
+!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]
+!10 = !{!11}
+!11 = !{!"0x101\00a\0016777217\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [a] [line 1]
+!12 = !{i32 2, !"Dwarf Version", i32 4}
+!13 = !{i32 2, !"Debug Info Version", i32 2}
+!14 = !{!"clang version 3.6.0 (217079)"}
+!15 = !MDLocation(line: 1, column: 15, scope: !4)
+!16 = !MDLocation(line: 2, column: 7, scope: !17)
+!17 = !{!"0xb\002\007\000", !1, !4} ; [ DW_TAG_lexical_block ] [FOO/if.cc]
+!18 = !MDLocation(line: 3, column: 5, scope: !17)
+!19 = !{!20, !20, i64 0}
+!20 = !{!"int", !21, i64 0}
+!21 = !{!"omnipotent char", !22, i64 0}
+!22 = !{!"Simple C/C++ TBAA"}
+!23 = !MDLocation(line: 4, column: 1, scope: !4)