| ; RUN: mkdir -p %t && cd %t |
| ; RUN: opt < %s -passes=insert-gcov-profiling -S | FileCheck %s |
| |
| ; CHECK: @__llvm_gcov_ctr = internal global [1 x i64] zeroinitializer |
| |
| ;; If an indirectbr critical edge cannot be split, ignore it. |
| ;; The edge will not be profiled. |
| ; CHECK-LABEL: @cannot_split( |
| ; CHECK: indirect.preheader: |
| ; CHECK-NEXT: load {{.*}} @__llvm_gcov_ctr |
| ; CHECK-NOT: load {{.*}} @__llvm_gcov_ctr |
| |
| define dso_local i32 @cannot_split(i8* nocapture readonly %p) #0 !dbg !7 { |
| entry: |
| %targets = alloca <2 x i8*>, align 16 |
| store <2 x i8*> <i8* blockaddress(@cannot_split, %indirect), i8* blockaddress(@cannot_split, %end)>, <2 x i8*>* %targets, align 16, !dbg !9 |
| br label %for.cond, !dbg !14 |
| |
| for.cond: ; preds = %for.cond, %entry |
| %p.addr.0 = phi i8* [ %p, %entry ], [ %incdec.ptr, %for.cond ] |
| %0 = load i8, i8* %p.addr.0, align 1, !dbg !15 |
| %cmp = icmp eq i8 %0, 7, !dbg !17 |
| %incdec.ptr = getelementptr inbounds i8, i8* %p.addr.0, i64 1, !dbg !18 |
| br i1 %cmp, label %indirect.preheader, label %for.cond, !dbg !15, !llvm.loop !19 |
| |
| indirect.preheader: ; preds = %for.cond |
| %1 = load i8, i8* %incdec.ptr, align 1, !dbg !21 |
| %idxprom = sext i8 %1 to i64, !dbg !21 |
| %arrayidx4 = getelementptr inbounds <2 x i8*>, <2 x i8*>* %targets, i64 0, i64 %idxprom, !dbg !21 |
| %2 = load i8*, i8** %arrayidx4, align 8, !dbg !21 |
| br label %indirect |
| |
| indirect: ; preds = %indirect.preheader, %indirect |
| indirectbr i8* %2, [label %indirect, label %end] |
| |
| end: ; preds = %indirect |
| ret i32 0, !dbg !22 |
| } |
| |
| attributes #0 = { norecurse nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "a.c", directory: "/tmp/c") |
| !2 = !{} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !7 = distinct !DISubprogram(name: "cannot_split", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !2) |
| !9 = !DILocation(line: 3, column: 14, scope: !7) |
| !14 = !DILocation(line: 5, column: 3, scope: !7) |
| !15 = !DILocation(line: 6, column: 9, scope: !7) |
| !17 = !DILocation(line: 6, column: 12, scope: !7) |
| !18 = !DILocation(line: 5, column: 12, scope: !7) |
| !19 = distinct !{!19, !14, !20} |
| !20 = !DILocation(line: 9, column: 5, scope: !7) |
| !21 = !DILocation(line: 0, scope: !7) |
| !22 = !DILocation(line: 11, column: 3, scope: !7) |
