| ; RUN: opt %s -passes='function(instcombine),sample-profile' -sample-profile-file=%S/Inputs/inline-coverage.prof -sample-profile-check-record-coverage=100 -sample-profile-check-sample-coverage=110 -pass-remarks=sample-profile -pass-remarks-analysis=sample-profile -o /dev/null 2>&1 | FileCheck %s |
| ; RUN: opt %s -passes="function(instcombine),sample-profile" -sample-profile-file=%S/Inputs/inline-coverage.prof -sample-profile-check-record-coverage=100 -sample-profile-check-sample-coverage=110 -pass-remarks=sample-profile -pass-remarks-analysis=sample-profile -o /dev/null 2>&1 | FileCheck %s |
| ; |
| ; Original code: |
| ; |
| ; 1 #include <stdlib.h> |
| ; 2 |
| ; 3 long long int foo(long i) { |
| ; 4 return rand() * i; |
| ; 5 } |
| ; 6 |
| ; 7 int main() { |
| ; 8 long long int sum = 0; |
| ; 9 for (int i = 0; i < 200000 * 3000; i++) |
| ; 10 sum += foo(i); |
| ; 11 return sum > 0 ? 0 : 1; |
| ; 12 } |
| ; |
| ; CHECK: remark: coverage.cc:10:12: previous inlining reattempted for hotness: '_Z3fool' into 'main' |
| ; CHECK: remark: coverage.cc:9:21: Applied 23478 samples from profile (offset: 2.1) |
| ; CHECK: remark: coverage.cc:10:16: Applied 23478 samples from profile (offset: 3) |
| ; CHECK: remark: coverage.cc:4:10: Applied 31878 samples from profile (offset: 1) |
| ; CHECK: remark: coverage.cc:11:10: Applied 0 samples from profile (offset: 4) |
| ; CHECK: remark: coverage.cc:10:16: most popular destination for conditional branches at coverage.cc:9:3 |
| ; |
| ; There is one sample record with 0 samples at offset 4 in main() that we never |
| ; use: |
| ; CHECK: warning: coverage.cc:7: 4 of 5 available profile records (80%) were applied |
| ; |
| ; Since the unused sample record contributes no samples, sample coverage should |
| ; be 100%. Note that we get this warning because we are requesting an impossible |
| ; 110% coverage check. |
| ; CHECK: warning: coverage.cc:7: 78834 of 78834 available profile samples (100%) were applied |
| |
| define i64 @_Z3fool(i64 %i) #0 !dbg !4 { |
| entry: |
| %i.addr = alloca i64, align 8 |
| store i64 %i, ptr %i.addr, align 8 |
| call void @llvm.dbg.declare(metadata ptr %i.addr, metadata !16, metadata !17), !dbg !18 |
| %call = call i32 @rand(), !dbg !19 |
| %conv = sext i32 %call to i64, !dbg !19 |
| %0 = load i64, ptr %i.addr, align 8, !dbg !20 |
| %mul = mul nsw i64 %conv, %0, !dbg !21 |
| ret i64 %mul, !dbg !22 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) |
| |
| declare i32 @rand() |
| |
| define i32 @main() #0 !dbg !9 { |
| entry: |
| %retval = alloca i32, align 4 |
| %sum = alloca i64, align 8 |
| %i = alloca i32, align 4 |
| store i32 0, ptr %retval, align 4 |
| call void @llvm.dbg.declare(metadata ptr %sum, metadata !23, metadata !17), !dbg !24 |
| store i64 0, ptr %sum, align 8, !dbg !24 |
| call void @llvm.dbg.declare(metadata ptr %i, metadata !25, metadata !17), !dbg !27 |
| store i32 0, ptr %i, align 4, !dbg !27 |
| br label %for.cond, !dbg !28 |
| |
| for.cond: ; preds = %for.inc, %entry |
| %0 = load i32, ptr %i, align 4, !dbg !29 |
| %cmp = icmp slt i32 %0, 600000000, !dbg !32 |
| br i1 %cmp, label %for.body, label %for.end, !dbg !33 |
| |
| for.body: ; preds = %for.cond |
| %1 = load i32, ptr %i, align 4, !dbg !34 |
| %conv = sext i32 %1 to i64, !dbg !34 |
| %call = call i64 @_Z3fool(i64 %conv), !dbg !35 |
| %2 = load i64, ptr %sum, align 8, !dbg !36 |
| %add = add nsw i64 %2, %call, !dbg !36 |
| store i64 %add, ptr %sum, align 8, !dbg !36 |
| br label %for.inc, !dbg !37 |
| |
| for.inc: ; preds = %for.body |
| %3 = load i32, ptr %i, align 4, !dbg !38 |
| %inc = add nsw i32 %3, 1, !dbg !38 |
| store i32 %inc, ptr %i, align 4, !dbg !38 |
| br label %for.cond, !dbg !39 |
| |
| for.end: ; preds = %for.cond |
| %4 = load i64, ptr %sum, align 8, !dbg !40 |
| %cmp1 = icmp sgt i64 %4, 0, !dbg !41 |
| %cond = select i1 %cmp1, i32 0, i32 1, !dbg !40 |
| ret i32 %cond, !dbg !42 |
| } |
| |
| attributes #0 = { "use-sample-profile" } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!13, !14} |
| !llvm.ident = !{!15} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 251738) (llvm/trunk 251737)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) |
| !1 = !DIFile(filename: "coverage.cc", directory: ".") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fool", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !8} |
| !7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !10 = !DISubroutineType(types: !11) |
| !11 = !{!12} |
| !12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !13 = !{i32 2, !"Dwarf Version", i32 4} |
| !14 = !{i32 2, !"Debug Info Version", i32 3} |
| !15 = !{!"clang version 3.8.0 (trunk 251738) (llvm/trunk 251737)"} |
| !16 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 3, type: !8) |
| !17 = !DIExpression() |
| !18 = !DILocation(line: 3, column: 24, scope: !4) |
| !19 = !DILocation(line: 4, column: 10, scope: !4) |
| !20 = !DILocation(line: 4, column: 19, scope: !4) |
| !21 = !DILocation(line: 4, column: 17, scope: !4) |
| !22 = !DILocation(line: 4, column: 3, scope: !4) |
| !23 = !DILocalVariable(name: "sum", scope: !9, file: !1, line: 8, type: !7) |
| !24 = !DILocation(line: 8, column: 17, scope: !9) |
| !25 = !DILocalVariable(name: "i", scope: !26, file: !1, line: 9, type: !12) |
| !26 = distinct !DILexicalBlock(scope: !9, file: !1, line: 9, column: 3) |
| !27 = !DILocation(line: 9, column: 12, scope: !26) |
| !28 = !DILocation(line: 9, column: 8, scope: !26) |
| !29 = !DILocation(line: 9, column: 19, scope: !30) |
| !30 = !DILexicalBlockFile(scope: !31, file: !1, discriminator: 2) |
| !31 = distinct !DILexicalBlock(scope: !26, file: !1, line: 9, column: 3) |
| !32 = !DILocation(line: 9, column: 21, scope: !30) |
| !33 = !DILocation(line: 9, column: 3, scope: !30) |
| !34 = !DILocation(line: 10, column: 16, scope: !31) |
| !35 = !DILocation(line: 10, column: 12, scope: !31) |
| !36 = !DILocation(line: 10, column: 9, scope: !31) |
| !37 = !DILocation(line: 10, column: 5, scope: !31) |
| !38 = !DILocation(line: 9, column: 39, scope: !31) |
| !39 = !DILocation(line: 9, column: 3, scope: !31) |
| !40 = !DILocation(line: 11, column: 10, scope: !9) |
| !41 = !DILocation(line: 11, column: 14, scope: !9) |
| !42 = !DILocation(line: 11, column: 3, scope: !9) |