1; Test that GCOV instrumentation numbers functions correctly when some 2; functions aren't emitted. 3 4; Inject metadata to set the .gcno file location 5; RUN: rm -rf %t && mkdir -p %t 6; RUN: echo '!14 = !{!"%/t/function-numbering.ll", !0}' > %t/1 7; RUN: cat %s %t/1 > %t/2 8 9; RUN: opt -passes=insert-gcov-profiling -S < %t/2 | FileCheck --check-prefix GCDA %s 10; RUN: llvm-cov gcov -n -dump %t/function-numbering.gcno 2>&1 | FileCheck --check-prefix GCNO %s 11; RUN: opt -passes=insert-gcov-profiling -S < %t/2 -mtriple=s390x-unknown-linux | FileCheck --check-prefix EXT %s 12; RUN: opt -passes=insert-gcov-profiling -S < %t/2 -mtriple=mips-linux-gnu | FileCheck --check-prefix MIPS_EXT %s 13; REQUIRES: x86-registered-target, systemz-registered-target, mips-registered-target 14 15target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 16target triple = "x86_64-apple-macosx10.10.0" 17 18; GCDA: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant 19; GCDA-SAME: { i32 0, 20; GCDA-SAME: { i32 1, 21; 22; GCDA-LABEL: define internal void @__llvm_gcov_writeout() unnamed_addr #[[#ATTR:]] { 23; GCDA-NEXT: entry: 24; GCDA-NEXT: br label %[[FILE_LOOP_HEADER:.*]] 25; 26; GCDA: [[FILE_LOOP_HEADER]]: 27; GCDA-NEXT: %[[IV:.*]] = phi i32 [ 0, %entry ], [ %[[NEXT_IV:.*]], %[[FILE_LOOP_LATCH:.*]] ] 28; GCDA-NEXT: %[[FILE_INFO:.*]] = getelementptr inbounds {{.*}}, ptr @__llvm_internal_gcov_emit_file_info, i32 0, i32 %[[IV]] 29; GCDA-NEXT: %[[START_FILE_ARGS:.*]] = getelementptr inbounds {{.*}}, ptr %[[FILE_INFO]], i32 0, i32 0 30; GCDA-NEXT: %[[START_FILE_ARG_0_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[START_FILE_ARGS]], i32 0, i32 0 31; GCDA-NEXT: %[[START_FILE_ARG_0:.*]] = load ptr, ptr %[[START_FILE_ARG_0_PTR]] 32; GCDA-NEXT: %[[START_FILE_ARG_1_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[START_FILE_ARGS]], i32 0, i32 1 33; GCDA-NEXT: %[[START_FILE_ARG_1:.*]] = load i32, ptr %[[START_FILE_ARG_1_PTR]] 34; GCDA-NEXT: %[[START_FILE_ARG_2_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[START_FILE_ARGS]], i32 0, i32 2 35; GCDA-NEXT: %[[START_FILE_ARG_2:.*]] = load i32, ptr %[[START_FILE_ARG_2_PTR]] 36; GCDA-NEXT: call void @llvm_gcda_start_file(ptr %[[START_FILE_ARG_0]], i32 %[[START_FILE_ARG_1]], i32 %[[START_FILE_ARG_2]]) 37; GCDA-NEXT: %[[NUM_COUNTERS_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[FILE_INFO]], i32 0, i32 1 38; GCDA-NEXT: %[[NUM_COUNTERS:.*]] = load i32, ptr %[[NUM_COUNTERS_PTR]] 39; GCDA-NEXT: %[[EMIT_FUN_ARGS_ARRAY_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[FILE_INFO]], i32 0, i32 2 40; GCDA-NEXT: %[[EMIT_FUN_ARGS_ARRAY:.*]] = load ptr, ptr %[[EMIT_FUN_ARGS_ARRAY_PTR]] 41; GCDA-NEXT: %[[EMIT_ARCS_ARGS_ARRAY_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[FILE_INFO]], i32 0, i32 3 42; GCDA-NEXT: %[[EMIT_ARCS_ARGS_ARRAY:.*]] = load ptr, ptr %[[EMIT_ARCS_ARGS_ARRAY_PTR]] 43; GCDA-NEXT: %[[ENTER_COUNTER_LOOP_COND:.*]] = icmp slt i32 0, %[[NUM_COUNTERS]] 44; GCDA-NEXT: br i1 %[[ENTER_COUNTER_LOOP_COND]], label %[[COUNTER_LOOP:.*]], label %[[FILE_LOOP_LATCH]] 45; 46; GCDA: [[COUNTER_LOOP]]: 47; GCDA-NEXT: %[[JV:.*]] = phi i32 [ 0, %[[FILE_LOOP_HEADER]] ], [ %[[NEXT_JV:.*]], %[[COUNTER_LOOP]] ] 48; GCDA-NEXT: %[[EMIT_FUN_ARGS:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_FUN_ARGS_ARRAY]], i32 %[[JV]] 49; GCDA-NEXT: %[[EMIT_FUN_ARG_0_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_FUN_ARGS]], i32 0, i32 0 50; GCDA-NEXT: %[[EMIT_FUN_ARG_0:.*]] = load i32, ptr %[[EMIT_FUN_ARG_0_PTR]] 51; GCDA-NEXT: %[[EMIT_FUN_ARG_1_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_FUN_ARGS]], i32 0, i32 1 52; GCDA-NEXT: %[[EMIT_FUN_ARG_1:.*]] = load i32, ptr %[[EMIT_FUN_ARG_1_PTR]] 53; GCDA-NEXT: %[[EMIT_FUN_ARG_2_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_FUN_ARGS]], i32 0, i32 2 54; GCDA-NEXT: %[[EMIT_FUN_ARG_2:.*]] = load i32, ptr %[[EMIT_FUN_ARG_2_PTR]] 55; GCDA-NEXT: call void @llvm_gcda_emit_function(i32 %[[EMIT_FUN_ARG_0]], 56; GCDA-SAME: i32 %[[EMIT_FUN_ARG_1]], 57; GCDA-SAME: i32 %[[EMIT_FUN_ARG_2]]) 58; GCDA-NEXT: %[[EMIT_ARCS_ARGS:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_ARCS_ARGS_ARRAY]], i32 %[[JV]] 59; GCDA-NEXT: %[[EMIT_ARCS_ARG_0_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_ARCS_ARGS]], i32 0, i32 0 60; GCDA-NEXT: %[[EMIT_ARCS_ARG_0:.*]] = load i32, ptr %[[EMIT_ARCS_ARG_0_PTR]] 61; GCDA-NEXT: %[[EMIT_ARCS_ARG_1_PTR:.*]] = getelementptr inbounds {{.*}}, ptr %[[EMIT_ARCS_ARGS]], i32 0, i32 1 62; GCDA-NEXT: %[[EMIT_ARCS_ARG_1:.*]] = load ptr, ptr %[[EMIT_ARCS_ARG_1_PTR]] 63; GCDA-NEXT: call void @llvm_gcda_emit_arcs(i32 %[[EMIT_ARCS_ARG_0]], 64; GCDA-SAME: ptr %[[EMIT_ARCS_ARG_1]]) 65; GCDA-NEXT: %[[NEXT_JV]] = add i32 %[[JV]], 1 66; GCDA-NEXT: %[[COUNTER_LOOP_COND:.*]] = icmp slt i32 %[[NEXT_JV]], %[[NUM_COUNTERS]] 67; GCDA-NEXT: br i1 %[[COUNTER_LOOP_COND]], label %[[COUNTER_LOOP]], label %[[FILE_LOOP_LATCH]] 68; 69; GCDA: [[FILE_LOOP_LATCH]]: 70; GCDA-NEXT: call void @llvm_gcda_summary_info() 71; GCDA-NEXT: call void @llvm_gcda_end_file() 72; GCDA-NEXT: %[[NEXT_IV]] = add i32 %[[IV]], 1 73; GCDA-NEXT: %[[FILE_LOOP_COND:.*]] = icmp slt i32 %[[NEXT_IV]], 1 74; GCDA-NEXT: br i1 %[[FILE_LOOP_COND]], label %[[FILE_LOOP_HEADER]], label %[[EXIT:.*]] 75; 76; GCDA: [[EXIT]]: 77; GCDA-NEXT: ret void 78 79; GCNO: == foo (0) @ 80; GCNO-NOT: == bar ({{[0-9]+}}) @ 81; GCNO: == baz (1) @ 82 83; GCDA: declare void @llvm_gcda_start_file(ptr, i32, i32) 84; EXT: declare void @llvm_gcda_start_file(ptr, i32 zeroext, i32 zeroext) 85; MIPS_EXT: declare void @llvm_gcda_start_file(ptr, i32 signext, i32 signext) 86 87; GCDA: declare void @llvm_gcda_emit_function(i32, i32, i32) 88; EXT: declare void @llvm_gcda_emit_function(i32 zeroext, i32 zeroext, i32 zeroext) 89; MIPS_EXT: declare void @llvm_gcda_emit_function(i32 signext, i32 signext, i32 signext) 90 91; GCDA: declare void @llvm_gcda_emit_arcs(i32, ptr) 92; EXT: declare void @llvm_gcda_emit_arcs(i32 zeroext, ptr) 93; MIPS_EXT: declare void @llvm_gcda_emit_arcs(i32 signext, ptr) 94 95define void @foo() !dbg !4 { 96 ret void, !dbg !12 97} 98 99define void @bar() !dbg !7 { 100 ; This function is referenced by the debug info, but no lines have locations. 101 ret void 102} 103 104define void @baz() !dbg !8 { 105 ret void, !dbg !13 106} 107 108; GCDA: attributes #[[#ATTR]] = { noinline nounwind } 109 110!llvm.gcov = !{!14} 111!llvm.dbg.cu = !{!0} 112!llvm.module.flags = !{!9, !10} 113!llvm.ident = !{!11} 114 115!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 116!1 = !DIFile(filename: ".../llvm/test/Transforms/GCOVProfiling/function-numbering.ll", directory: "") 117!2 = !{} 118!4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2) 119!5 = !DIFile(filename: ".../llvm/test/Transforms/GCOVProfiling/function-numbering.ll", directory: "") 120!6 = !DISubroutineType(types: !2) 121!7 = distinct !DISubprogram(name: "bar", line: 2, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2) 122!8 = distinct !DISubprogram(name: "baz", line: 3, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, retainedNodes: !2) 123!9 = !{i32 2, !"Dwarf Version", i32 2} 124!10 = !{i32 2, !"Debug Info Version", i32 3} 125!11 = !{!"clang version 3.6.0 "} 126!12 = !DILocation(line: 1, column: 13, scope: !4) 127!13 = !DILocation(line: 3, column: 13, scope: !8) 128