1; Test to check the callgraph in summary when there is PGO 2; RUN: opt -module-summary %s -o %t.bc 3; RUN: opt -module-summary %p/Inputs/hotness_based_import.ll -o %t2.bc 4; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc 5 6; Test import with default hot multiplier (3) and default hot-evolution-factor (1.0) 7; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 --S | FileCheck %s --check-prefix=HOT-DEFAULT 8; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 --S -import-hot-multiplier=3.0 -import-cold-multiplier=0.0 | FileCheck %s --check-prefix=HOT-DEFAULT 9; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 --S -import-hot-multiplier=3.0 | FileCheck %s --check-prefix=HOT-DEFAULT 10; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 --S -import-hot-multiplier=3.0 -import-instr-evolution-factor=0.0 | FileCheck %s --check-prefix=HOT-DEFAULT 11; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 --S -import-hot-multiplier=3.0 -import-hot-evolution-factor=1.0 | FileCheck %s --check-prefix=HOT-DEFAULT 12; HOT-DEFAULT-DAG: define available_externally void @hot1() 13; HOT-DEFAULT-DAG: define available_externally void @hot2() 14; HOT-DEFAULT-DAG: define available_externally void @calledFromHot() 15; HOT-DEFAULT-DAG: define available_externally void @calledFromHot2() 16; HOT-DEFAULT-DAG: define available_externally void @none1() 17; HOT-DEFAULT-NOT: define available_externally void @cold() 18; HOT-DEFAULT-NOT: define available_externally void @hot3() 19; HOT-DEFAULT-NOT: define available_externally void @none2() 20; HOT-DEFAULT-NOT: define available_externally void @none3() 21; HOT-DEFAULT-NOT: define available_externally void @cold2() 22; HOT-DEFAULT-NOT: define available_externally void @calledFromCold() 23; HOT-DEFAULT-NOT: define available_externally void @calledFromNone() 24 25; This one tests if we decay threshold for hot callsites. With hot-evolution-factor of 0 26; we should not import any of calledFromHot functions 27; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 --S -import-hot-multiplier=3.0 -import-hot-evolution-factor=0.0 | FileCheck %s --check-prefix=HOT-EVOLUTION 28; HOT-EVOLUTION-DAG: define available_externally void @hot1() 29; HOT-EVOLUTION-DAG: define available_externally void @hot2() 30; HOT-EVOLUTION-DAG: define available_externally void @none1() 31; HOT-EVOLUTION-NOT: define available_externally void @hot3() 32; HOT-EVOLUTION-NOT: define available_externally void @cold() 33; HOT-EVOLUTION-NOT: define available_externally void @none2() 34; HOT-EVOLUTION-NOT: define available_externally void @none3() 35; HOT-EVOLUTION-NOT: define available_externally void @cold2() 36; HOT-EVOLUTION-NOT: define available_externally void @calledFromHot() 37; HOT-EVOLUTION-NOT: define available_externally void @calledFromHot2() 38 39; Test import with hot multiplier 1.0 - treat hot callsites as normal. 40; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 -import-hot-multiplier=1.0 --S | FileCheck %s --check-prefix=HOT-ONE 41; HOT-ONE-DAG: define available_externally void @hot1() 42; HOT-ONE-DAG: define available_externally void @none1() 43; HOT-ONE-NOT: define available_externally void @cold() 44; HOT-ONE-NOT: define available_externally void @hot2() 45; HOT-ONE-NOT: define available_externally void @hot3() 46; HOT-ONE-NOT: define available_externally void @none2() 47; HOT-ONE-NOT: define available_externally void @none3() 48; HOT-ONE-NOT: define available_externally void @cold2() 49 50; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=1 -import-hot-multiplier=1.0 -import-cold-multiplier=1.0 --S | FileCheck %s --check-prefix=HOT-COLD-ONE 51; HOT-COLD-ONE-DAG: define available_externally void @hot1() 52; HOT-COLD-ONE-DAG: define available_externally void @cold() 53; HOT-COLD-ONE-DAG: define available_externally void @none1() 54; HOT-COLD-ONE-NOT: define available_externally void @hot2() 55; HOT-COLD-ONE-NOT: define available_externally void @hot3() 56; HOT-COLD-ONE-NOT: define available_externally void @none2() 57; HOT-COLD-ONE-NOT: define available_externally void @none3() 58; HOT-COLD-ONE-NOT: define available_externally void @cold2() 59 60; Test import with hot multiplier 0.0 and high threshold - don't import functions called from hot callsite. 61; RUN: opt -passes=function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=10 -import-hot-multiplier=0.0 -import-cold-multiplier=1.0 --S | FileCheck %s --check-prefix=HOT-ZERO 62; HOT-ZERO-DAG: define available_externally void @cold() 63; HOT-ZERO-DAG: define available_externally void @none1() 64; HOT-ZERO-DAG: define available_externally void @none2() 65; HOT-ZERO-DAG: define available_externally void @none3() 66; HOT-ZERO-DAG: define available_externally void @cold2() 67; HOT-ZERO-DAG: define available_externally void @calledFromCold() 68; HOT-ZERO-DAG: define available_externally void @calledFromNone() 69; HOT-ZERO-NOT: define available_externally void @hot2() 70; HOT-ZERO-NOT: define available_externally void @hot1() 71; HOT-ZERO-NOT: define available_externally void @hot3() 72; HOT-ZERO-NOT: define available_externally void @calledFromHot() 73; HOT-ZERO-NOT: define available_externally void @calledFromHot2() 74 75 76; ModuleID = 'thinlto-function-summary-callgraph.ll' 77target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 78target triple = "x86_64-unknown-linux-gnu" 79 80; This function have high profile count, so entry block is hot. 81define void @hot_function(i1 %a, i1 %a2) !prof !20 { 82entry: 83 call void @hot1() 84 br i1 %a, label %Cold, label %Hot, !prof !41 85Cold: ; 1/1000 goes here 86 call void @cold() 87 call void @cold2() 88 call void @hot2() 89 call void @none1() 90 br label %exit 91Hot: ; 999/1000 goes here 92 call void @hot2() 93 call void @hot3() 94 br i1 %a2, label %None1, label %None2, !prof !42 95None1: ; half goes here 96 call void @none1() 97 call void @none2() 98 br label %exit 99None2: ; half goes here 100 call void @none3() 101 br label %exit 102exit: 103 ret void 104} 105 106declare void @hot1() #1 107declare void @hot2() #1 108declare void @hot3() #1 109declare void @cold() #1 110declare void @cold2() #1 111declare void @none1() #1 112declare void @none2() #1 113declare void @none3() #1 114 115 116!41 = !{!"branch_weights", i32 1, i32 1000} 117!42 = !{!"branch_weights", i32 1, i32 1} 118 119 120 121!llvm.module.flags = !{!1} 122!20 = !{!"function_entry_count", i64 110} 123 124!1 = !{i32 1, !"ProfileSummary", !2} 125!2 = !{!3, !4, !5, !6, !7, !8, !9, !10} 126!3 = !{!"ProfileFormat", !"InstrProf"} 127!4 = !{!"TotalCount", i64 10000} 128!5 = !{!"MaxCount", i64 10} 129!6 = !{!"MaxInternalCount", i64 1} 130!7 = !{!"MaxFunctionCount", i64 1000} 131!8 = !{!"NumCounts", i64 3} 132!9 = !{!"NumFunctions", i64 3} 133!10 = !{!"DetailedSummary", !11} 134!11 = !{!12, !13, !14} 135!12 = !{i32 10000, i64 100, i32 1} 136!13 = !{i32 999000, i64 100, i32 1} 137!14 = !{i32 999999, i64 1, i32 2} 138