| ; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s |
| |
| ; Original C++ code for this test case: |
| ; |
| ; #include <stdio.h> |
| ; |
| ; long foo(int x, int y, long N) { |
| ; if (x < y) { |
| ; return y - x; |
| ; } else { |
| ; for (long i = 0; i < N; i++) { |
| ; if (i > N / 3) |
| ; x--; |
| ; if (i > N / 4) { |
| ; y++; |
| ; x += 3; |
| ; } else { |
| ; for (unsigned j = 0; j < 100; j++) { |
| ; x += j; |
| ; y -= 3; |
| ; } |
| ; } |
| ; } |
| ; } |
| ; return y * x; |
| ; } |
| ; |
| ; int main() { |
| ; int x = 5678; |
| ; int y = 1234; |
| ; long N = 9999999; |
| ; printf("foo(%d, %d, %ld) = %ld\n", x, y, N, foo(x, y, N)); |
| ; return 0; |
| ; } |
| |
| ; ModuleID = 'propagate.cc' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @.str = private unnamed_addr constant [24 x i8] c"foo(%d, %d, %ld) = %ld\0A\00", align 1 |
| |
| ; Function Attrs: nounwind uwtable |
| define i64 @_Z3fooiil(i32 %x, i32 %y, i64 %N) #0 !dbg !6 { |
| entry: |
| %retval = alloca i64, align 8 |
| %x.addr = alloca i32, align 4 |
| %y.addr = alloca i32, align 4 |
| %N.addr = alloca i64, align 8 |
| %i = alloca i64, align 8 |
| %j = alloca i64, align 8 |
| store i32 %x, ptr %x.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %x.addr, metadata !11, metadata !12), !dbg !13 |
| store i32 %y, ptr %y.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %y.addr, metadata !14, metadata !12), !dbg !15 |
| store i64 %N, ptr %N.addr, align 8 |
| call void @llvm.dbg.declare(metadata ptr %N.addr, metadata !16, metadata !12), !dbg !17 |
| %0 = load i32, ptr %x.addr, align 4, !dbg !18 |
| %1 = load i32, ptr %y.addr, align 4, !dbg !20 |
| %cmp = icmp slt i32 %0, %1, !dbg !21 |
| br i1 %cmp, label %if.then, label %if.else, !dbg !22 |
| |
| if.then: ; preds = %entry |
| %2 = load i32, ptr %y.addr, align 4, !dbg !23 |
| %3 = load i32, ptr %x.addr, align 4, !dbg !25 |
| %sub = sub nsw i32 %2, %3, !dbg !26 |
| %conv = sext i32 %sub to i64, !dbg !23 |
| store i64 %conv, ptr %retval, align 8, !dbg !27 |
| br label %return, !dbg !27 |
| |
| if.else: ; preds = %entry |
| call void @llvm.dbg.declare(metadata ptr %i, metadata !28, metadata !12), !dbg !31 |
| store i64 0, ptr %i, align 8, !dbg !31 |
| br label %for.cond, !dbg !32 |
| |
| for.cond: ; preds = %for.inc17, %if.else |
| %4 = load i64, ptr %i, align 8, !dbg !33 |
| %5 = load i64, ptr %N.addr, align 8, !dbg !36 |
| %cmp1 = icmp slt i64 %4, %5, !dbg !37 |
| br i1 %cmp1, label %for.body, label %for.end19, !dbg !38 |
| |
| for.body: ; preds = %for.cond |
| %6 = load i64, ptr %i, align 8, !dbg !39 |
| %7 = load i64, ptr %N.addr, align 8, !dbg !42 |
| %div = sdiv i64 %7, 3, !dbg !43 |
| %cmp2 = icmp sgt i64 %6, %div, !dbg !44 |
| br i1 %cmp2, label %if.then3, label %if.end, !dbg !45 |
| ; CHECK: edge for.body -> if.then3 probability is 0x51292fa6 / 0x80000000 = 63.41% |
| ; CHECK: edge for.body -> if.end probability is 0x2ed6d05a / 0x80000000 = 36.59% |
| |
| if.then3: ; preds = %for.body |
| %8 = load i32, ptr %x.addr, align 4, !dbg !46 |
| %dec = add nsw i32 %8, -1, !dbg !46 |
| store i32 %dec, ptr %x.addr, align 4, !dbg !46 |
| br label %if.end, !dbg !47 |
| |
| if.end: ; preds = %if.then3, %for.body |
| %9 = load i64, ptr %i, align 8, !dbg !48 |
| %10 = load i64, ptr %N.addr, align 8, !dbg !50 |
| %div4 = sdiv i64 %10, 4, !dbg !51 |
| %cmp5 = icmp sgt i64 %9, %div4, !dbg !52 |
| br i1 %cmp5, label %if.then6, label %if.else7, !dbg !53 |
| ; CHECK: edge if.end -> if.then6 probability is 0x5d89d89e / 0x80000000 = 73.08% |
| ; CHECK: edge if.end -> if.else7 probability is 0x22762762 / 0x80000000 = 26.92% |
| |
| if.then6: ; preds = %if.end |
| %11 = load i32, ptr %y.addr, align 4, !dbg !54 |
| %inc = add nsw i32 %11, 1, !dbg !54 |
| store i32 %inc, ptr %y.addr, align 4, !dbg !54 |
| %12 = load i32, ptr %x.addr, align 4, !dbg !56 |
| %add = add nsw i32 %12, 3, !dbg !56 |
| store i32 %add, ptr %x.addr, align 4, !dbg !56 |
| br label %if.end16, !dbg !57 |
| |
| if.else7: ; preds = %if.end |
| call void @llvm.dbg.declare(metadata ptr %j, metadata !58, metadata !12), !dbg !62 |
| store i64 0, ptr %j, align 8, !dbg !62 |
| br label %for.cond8, !dbg !63 |
| |
| for.cond8: ; preds = %for.inc, %if.else7 |
| %13 = load i64, ptr %j, align 8, !dbg !64 |
| %cmp9 = icmp slt i64 %13, 100, !dbg !67 |
| br i1 %cmp9, label %for.body10, label %for.end, !dbg !68 |
| ; CHECK: edge for.cond8 -> for.body10 probability is 0x7e941a89 / 0x80000000 = 98.89% [HOT edge] |
| ; CHECK: edge for.cond8 -> for.end probability is 0x016be577 / 0x80000000 = 1.11% |
| |
| |
| for.body10: ; preds = %for.cond8 |
| %14 = load i64, ptr %j, align 8, !dbg !69 |
| %15 = load i32, ptr %x.addr, align 4, !dbg !71 |
| %conv11 = sext i32 %15 to i64, !dbg !71 |
| %add12 = add nsw i64 %conv11, %14, !dbg !71 |
| %conv13 = trunc i64 %add12 to i32, !dbg !71 |
| store i32 %conv13, ptr %x.addr, align 4, !dbg !71 |
| %16 = load i32, ptr %y.addr, align 4, !dbg !72 |
| %sub14 = sub nsw i32 %16, 3, !dbg !72 |
| store i32 %sub14, ptr %y.addr, align 4, !dbg !72 |
| br label %for.inc, !dbg !73 |
| |
| for.inc: ; preds = %for.body10 |
| %17 = load i64, ptr %j, align 8, !dbg !74 |
| %inc15 = add nsw i64 %17, 1, !dbg !74 |
| store i64 %inc15, ptr %j, align 8, !dbg !74 |
| br label %for.cond8, !dbg !76 |
| |
| for.end: ; preds = %for.cond8 |
| br label %if.end16 |
| |
| if.end16: ; preds = %for.end, %if.then6 |
| br label %for.inc17, !dbg !77 |
| |
| for.inc17: ; preds = %if.end16 |
| %18 = load i64, ptr %i, align 8, !dbg !78 |
| %inc18 = add nsw i64 %18, 1, !dbg !78 |
| store i64 %inc18, ptr %i, align 8, !dbg !78 |
| br label %for.cond, !dbg !80 |
| |
| for.end19: ; preds = %for.cond |
| br label %if.end20 |
| |
| if.end20: ; preds = %for.end19 |
| %19 = load i32, ptr %y.addr, align 4, !dbg !81 |
| %20 = load i32, ptr %x.addr, align 4, !dbg !82 |
| %mul = mul nsw i32 %19, %20, !dbg !83 |
| %conv21 = sext i32 %mul to i64, !dbg !81 |
| store i64 %conv21, ptr %retval, align 8, !dbg !84 |
| br label %return, !dbg !84 |
| |
| return: ; preds = %if.end20, %if.then |
| %21 = load i64, ptr %retval, align 8, !dbg !85 |
| ret i64 %21, !dbg !85 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: norecurse uwtable |
| define i32 @main() #2 !dbg !86 { |
| entry: |
| %retval = alloca i32, align 4 |
| %x = alloca i32, align 4 |
| %y = alloca i32, align 4 |
| %N = alloca i64, align 8 |
| store i32 0, ptr %retval, align 4 |
| call void @llvm.dbg.declare(metadata ptr %x, metadata !89, metadata !12), !dbg !90 |
| store i32 5678, ptr %x, align 4, !dbg !90 |
| call void @llvm.dbg.declare(metadata ptr %y, metadata !91, metadata !12), !dbg !92 |
| store i32 1234, ptr %y, align 4, !dbg !92 |
| call void @llvm.dbg.declare(metadata ptr %N, metadata !93, metadata !12), !dbg !94 |
| store i64 9999999, ptr %N, align 8, !dbg !94 |
| %0 = load i32, ptr %x, align 4, !dbg !95 |
| %1 = load i32, ptr %y, align 4, !dbg !96 |
| %2 = load i64, ptr %N, align 8, !dbg !97 |
| %3 = load i32, ptr %x, align 4, !dbg !98 |
| %4 = load i32, ptr %y, align 4, !dbg !99 |
| %5 = load i64, ptr %N, align 8, !dbg !100 |
| %call = call i64 @_Z3fooiil(i32 %3, i32 %4, i64 %5), !dbg !101 |
| %call1 = call i32 (ptr, ...) @printf(ptr @.str, i32 %0, i32 %1, i64 %2, i64 %call), !dbg !102 |
| ret i32 0, !dbg !104 |
| } |
| |
| declare i32 @printf(ptr, ...) #3 |
| |
| attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { norecurse uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" } |
| attributes #3 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| !llvm.ident = !{!5} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 266819)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "propagate.cc", directory: ".") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{!"clang version 3.9.0 (trunk 266819)"} |
| !6 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooiil", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{!9, !10, !10, !9} |
| !9 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !11 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 3, type: !10) |
| !12 = !DIExpression() |
| !13 = !DILocation(line: 3, column: 14, scope: !6) |
| !14 = !DILocalVariable(name: "y", arg: 2, scope: !6, file: !1, line: 3, type: !10) |
| !15 = !DILocation(line: 3, column: 21, scope: !6) |
| !16 = !DILocalVariable(name: "N", arg: 3, scope: !6, file: !1, line: 3, type: !9) |
| !17 = !DILocation(line: 3, column: 29, scope: !6) |
| !18 = !DILocation(line: 4, column: 7, scope: !19) |
| !19 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 7) |
| !20 = !DILocation(line: 4, column: 11, scope: !19) |
| !21 = !DILocation(line: 4, column: 9, scope: !19) |
| !22 = !DILocation(line: 4, column: 7, scope: !6) |
| !23 = !DILocation(line: 5, column: 12, scope: !24) |
| !24 = distinct !DILexicalBlock(scope: !19, file: !1, line: 4, column: 14) |
| !25 = !DILocation(line: 5, column: 16, scope: !24) |
| !26 = !DILocation(line: 5, column: 14, scope: !24) |
| !27 = !DILocation(line: 5, column: 5, scope: !24) |
| !28 = !DILocalVariable(name: "i", scope: !29, file: !1, line: 7, type: !9) |
| !29 = distinct !DILexicalBlock(scope: !30, file: !1, line: 7, column: 5) |
| !30 = distinct !DILexicalBlock(scope: !19, file: !1, line: 6, column: 10) |
| !31 = !DILocation(line: 7, column: 15, scope: !29) |
| !32 = !DILocation(line: 7, column: 10, scope: !29) |
| !33 = !DILocation(line: 7, column: 22, scope: !34) |
| !34 = !DILexicalBlockFile(scope: !35, file: !1, discriminator: 2) |
| !35 = distinct !DILexicalBlock(scope: !29, file: !1, line: 7, column: 5) |
| !36 = !DILocation(line: 7, column: 26, scope: !34) |
| !37 = !DILocation(line: 7, column: 24, scope: !34) |
| !38 = !DILocation(line: 7, column: 5, scope: !34) |
| !39 = !DILocation(line: 8, column: 11, scope: !40) |
| !40 = distinct !DILexicalBlock(scope: !41, file: !1, line: 8, column: 11) |
| !41 = distinct !DILexicalBlock(scope: !35, file: !1, line: 7, column: 34) |
| !42 = !DILocation(line: 8, column: 15, scope: !40) |
| !43 = !DILocation(line: 8, column: 17, scope: !40) |
| !44 = !DILocation(line: 8, column: 13, scope: !40) |
| !45 = !DILocation(line: 8, column: 11, scope: !41) |
| !46 = !DILocation(line: 9, column: 10, scope: !40) |
| !47 = !DILocation(line: 9, column: 9, scope: !40) |
| !48 = !DILocation(line: 10, column: 11, scope: !49) |
| !49 = distinct !DILexicalBlock(scope: !41, file: !1, line: 10, column: 11) |
| !50 = !DILocation(line: 10, column: 15, scope: !49) |
| !51 = !DILocation(line: 10, column: 17, scope: !49) |
| !52 = !DILocation(line: 10, column: 13, scope: !49) |
| !53 = !DILocation(line: 10, column: 11, scope: !41) |
| !54 = !DILocation(line: 11, column: 10, scope: !55) |
| !55 = distinct !DILexicalBlock(scope: !49, file: !1, line: 10, column: 22) |
| !56 = !DILocation(line: 12, column: 11, scope: !55) |
| !57 = !DILocation(line: 13, column: 7, scope: !55) |
| !58 = !DILocalVariable(name: "j", scope: !59, file: !1, line: 14, type: !61) |
| !59 = distinct !DILexicalBlock(scope: !60, file: !1, line: 14, column: 9) |
| !60 = distinct !DILexicalBlock(scope: !49, file: !1, line: 13, column: 14) |
| !61 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !62 = !DILocation(line: 14, column: 24, scope: !59) |
| !63 = !DILocation(line: 14, column: 14, scope: !59) |
| !64 = !DILocation(line: 14, column: 31, scope: !65) |
| !65 = !DILexicalBlockFile(scope: !66, file: !1, discriminator: 2) |
| !66 = distinct !DILexicalBlock(scope: !59, file: !1, line: 14, column: 9) |
| !67 = !DILocation(line: 14, column: 33, scope: !65) |
| !68 = !DILocation(line: 14, column: 9, scope: !65) |
| !69 = !DILocation(line: 15, column: 16, scope: !70) |
| !70 = distinct !DILexicalBlock(scope: !66, file: !1, line: 14, column: 45) |
| !71 = !DILocation(line: 15, column: 13, scope: !70) |
| !72 = !DILocation(line: 16, column: 13, scope: !70) |
| !73 = !DILocation(line: 17, column: 9, scope: !70) |
| !74 = !DILocation(line: 14, column: 41, scope: !75) |
| !75 = !DILexicalBlockFile(scope: !66, file: !1, discriminator: 4) |
| !76 = !DILocation(line: 14, column: 9, scope: !75) |
| !77 = !DILocation(line: 19, column: 5, scope: !41) |
| !78 = !DILocation(line: 7, column: 30, scope: !79) |
| !79 = !DILexicalBlockFile(scope: !35, file: !1, discriminator: 4) |
| !80 = !DILocation(line: 7, column: 5, scope: !79) |
| !81 = !DILocation(line: 21, column: 10, scope: !6) |
| !82 = !DILocation(line: 21, column: 14, scope: !6) |
| !83 = !DILocation(line: 21, column: 12, scope: !6) |
| !84 = !DILocation(line: 21, column: 3, scope: !6) |
| !85 = !DILocation(line: 22, column: 1, scope: !6) |
| !86 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 24, type: !87, isLocal: false, isDefinition: true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !87 = !DISubroutineType(types: !88) |
| !88 = !{!10} |
| !89 = !DILocalVariable(name: "x", scope: !86, file: !1, line: 25, type: !10) |
| !90 = !DILocation(line: 25, column: 7, scope: !86) |
| !91 = !DILocalVariable(name: "y", scope: !86, file: !1, line: 26, type: !10) |
| !92 = !DILocation(line: 26, column: 7, scope: !86) |
| !93 = !DILocalVariable(name: "N", scope: !86, file: !1, line: 27, type: !9) |
| !94 = !DILocation(line: 27, column: 8, scope: !86) |
| !95 = !DILocation(line: 28, column: 38, scope: !86) |
| !96 = !DILocation(line: 28, column: 41, scope: !86) |
| !97 = !DILocation(line: 28, column: 44, scope: !86) |
| !98 = !DILocation(line: 28, column: 51, scope: !86) |
| !99 = !DILocation(line: 28, column: 54, scope: !86) |
| !100 = !DILocation(line: 28, column: 57, scope: !86) |
| !101 = !DILocation(line: 28, column: 47, scope: !86) |
| !102 = !DILocation(line: 28, column: 3, scope: !103) |
| !103 = !DILexicalBlockFile(scope: !86, file: !1, discriminator: 2) |
| !104 = !DILocation(line: 29, column: 3, scope: !86) |