diff options
| -rw-r--r-- | llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp | 10 | ||||
| -rw-r--r-- | llvm/test/Transforms/GCOVProfiling/return-block.ll | 66 |
2 files changed, 73 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp b/llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp index 220d7f8b490..685428ee952 100644 --- a/llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp +++ b/llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp @@ -310,11 +310,15 @@ namespace { Function *F = SP.getFunction(); DEBUG(dbgs() << "Function: " << getFunctionName(SP) << "\n"); - uint32_t i = 0; - for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) { + + Function::iterator BB = F->begin(), E = F->end(); + Blocks[BB++] = new GCOVBlock(0, os); + ReturnBlock = new GCOVBlock(1, os); + + uint32_t i = 2; + for (; BB != E; ++BB) { Blocks[BB] = new GCOVBlock(i++, os); } - ReturnBlock = new GCOVBlock(i++, os); std::string FunctionNameAndLine; raw_string_ostream FNLOS(FunctionNameAndLine); diff --git a/llvm/test/Transforms/GCOVProfiling/return-block.ll b/llvm/test/Transforms/GCOVProfiling/return-block.ll new file mode 100644 index 00000000000..7874895ad5b --- /dev/null +++ b/llvm/test/Transforms/GCOVProfiling/return-block.ll @@ -0,0 +1,66 @@ +; Inject metadata to set the .gcno file location +; RUN: echo '!19 = metadata !{metadata !"%/T/return-block.ll", metadata !0}' > %t1 +; RUN: cat %s %t1 > %t2 +; RUN: opt -insert-gcov-profiling -disable-output %t2 +; RUN: llvm-cov gcov -n -dump return-block.gcno 2>&1 | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@A = common global i32 0, align 4 + +; Function Attrs: nounwind uwtable +define void @test() #0 { +entry: + tail call void (...)* @f() #2, !dbg !14 + %0 = load i32* @A, align 4, !dbg !15 + %tobool = icmp eq i32 %0, 0, !dbg !15 + br i1 %tobool, label %if.end, label %if.then, !dbg !15 + +if.then: ; preds = %entry + tail call void (...)* @g() #2, !dbg !16 + br label %if.end, !dbg !16 + +if.end: ; preds = %entry, %if.then + ret void, !dbg !18 +} + +declare void @f(...) #1 + +declare void @g(...) #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" } +attributes #1 = { "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 #2 = { nounwind } + +!llvm.gcov = !{!14} +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!11, !12} +!llvm.ident = !{!13} + +!0 = metadata !{metadata !"0x11\0012\00clang version 3.6.0 (trunk 223182)\001\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !8, metadata !2} ; [ DW_TAG_compile_unit ] [return-block.c] [DW_LANG_C99] +!1 = metadata !{metadata !".../llvm/test/Transforms/GCOVProfiling/return-block.ll", metadata !""} +!2 = metadata !{} +!3 = metadata !{metadata !4} +!4 = metadata !{metadata !"0x2e\00test\00test\00\005\000\001\000\000\000\001\005", metadata !1, metadata !5, metadata !6, null, void ()* @test, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 5] [def] [test] +!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [return-block.c] +!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", null, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] +!7 = metadata !{null} +!8 = metadata !{metadata !9} +!9 = metadata !{metadata !"0x34\00A\00A\00\003\000\001", null, metadata !5, metadata !10, i32* @A, null} ; [ DW_TAG_variable ] [A] [line 3] [def] +!10 = metadata !{metadata !"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] +!11 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} +!12 = metadata !{i32 2, metadata !"Debug Info Version", i32 2} +!13 = metadata !{metadata !"clang version 3.6.0 (trunk 223182)"} +!14 = metadata !{i32 6, i32 3, metadata !4, null} +!15 = metadata !{i32 7, i32 7, metadata !4, null} +!16 = metadata !{i32 8, i32 5, metadata !17, null} +!17 = metadata !{metadata !"0xb\007\007\000", metadata !1, metadata !4} ; [ DW_TAG_lexical_block ] [return-block.c] +!18 = metadata !{i32 9, i32 1, metadata !4, null} + +; There should be no destination edges for block 1. +; CHECK: Block : 0 Counter : 0 +; CHECK-NEXT: Destination Edges : 2 (0), +; CHECK-NEXT: Block : 1 Counter : 0 +; CHECK-NEXT: Source Edges : 4 (0), +; CHECK-NEXT: Block : 2 Counter : 0 |
