| ; RUN: opt -passes='module(sancov-module)' -sanitizer-coverage-trace-pc \ |
| ; RUN: -sanitizer-coverage-level=3 %s -S -o - | FileCheck %s |
| |
| ; The edge between %entry and %for.inc.i is a critical edge. |
| ; ModuleSanitizerCoveragePass must split this critical edge in order to track |
| ; coverage of this edge. ModuleSanitizerCoveragePass will also insert calls to |
| ; @__sanitizer_cov_trace_pc using the debug location from the predecessor's |
| ; branch. but, if the branch itself is missing debug info (say, by accident |
| ; due to a bug in an earlier transform), we would fail a verifier check that |
| ; verifies calls to functions with debug info themselves have debug info. |
| ; The definition of @__sanitizer_cov_trace_pc may be visible during LTO. |
| |
| ; Of the below checks, we really only care that the calls to |
| ; @__sanitizer_cov_trace_pc retain !dbg metadata. |
| |
| define void @update_shadow() !dbg !3 { |
| ; CHECK-LABEL: @update_shadow( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @__sanitizer_cov_trace_pc() #[[ATTR0:[0-9]+]], !dbg [[DBG6:![0-9]+]] |
| ; CHECK: entry.for.inc.i_crit_edge: |
| ; CHECK-NEXT: call void @__sanitizer_cov_trace_pc() #[[ATTR0]], !dbg [[DBG7:![0-9]+]] |
| ; CHECK: if.end22.i: |
| ; CHECK-NEXT: call void @__sanitizer_cov_trace_pc() #[[ATTR0]], !dbg [[DBG8:![0-9]+]] |
| ; CHECK: [[DBG6]] = !DILocation(line: 192, scope: !3) |
| ; CHECK: [[DBG7]] = !DILocation(line: 0, scope: !3) |
| ; CHECK: [[DBG8]] = !DILocation(line: 129, column: 2, scope: !3) |
| entry: |
| br i1 undef, label %for.inc.i, label %if.end22.i |
| |
| if.end22.i: ; preds = %entry |
| br label %for.inc.i, !dbg !8 |
| |
| for.inc.i: ; preds = %if.end22.i, %entry |
| ret void, !dbg !6 |
| } |
| |
| define void @__sanitizer_cov_trace_pc() !dbg !7{ |
| ret void |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C89, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "kernel/cfi.c", directory: "") |
| !2 = !{i32 2, !"Debug Info Version", i32 3} |
| !3 = distinct !DISubprogram(name: "update_shadow", scope: !1, file: !1, line: 190, type: !4, scopeLine: 192, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0) |
| !4 = !DISubroutineType(types: !5) |
| !5 = !{} |
| !6 = !DILocation(line: 223, column: 1, scope: !3) |
| !7 = distinct !DISubprogram(name: "__sanitizer_cov_trace_pc", scope: !1, file: !1, line: 200, type: !4, scopeLine: 200, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0) |
| !8 = !DILocation(line: 129, column: 2, scope: !3) |
