| ; Test to check that callee reached from cold and then hot path gets |
| ; hot thresholds. |
| ; RUN: opt -module-summary %s -o %t.bc |
| ; RUN: opt -module-summary %p/Inputs/hotness_based_import2.ll -o %t2.bc |
| ; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc |
| |
| ; Teset with limit set to 10 and multipliers set to 1. Since cold call to |
| ; hot is first in the other module, we'll first add calledFromHot to worklist |
| ; with threshold decayed by default 0.7 factor. Test ensures that when we |
| ; encounter it again from hot path, we re-enqueue with higher non-decayed |
| ; threshold which will allow it to be imported. |
| ; RUN: opt -function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=10 -import-hot-multiplier=1.0 -import-cold-multiplier=1.0 -S | FileCheck %s --check-prefix=CHECK |
| ; CHECK-DAG: define available_externally void @hot() |
| ; CHECK-DAG: define available_externally void @calledFromHot() |
| |
| ; ModuleID = 'thinlto-function-summary-callgraph.ll' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; This function has a high profile count, so entry block is hot. |
| define void @hot_function(i1 %a, i1 %a2) !prof !28 { |
| entry: |
| call void @hot() |
| ret void |
| } |
| |
| ; This function has a low profile count, so entry block is hot. |
| define void @cold_function(i1 %a, i1 %a2) !prof !29 { |
| entry: |
| call void @hot() |
| ret void |
| } |
| |
| declare void @hot() #1 |
| |
| !llvm.module.flags = !{!1} |
| |
| !1 = !{i32 1, !"ProfileSummary", !2} |
| !2 = !{!3, !4, !5, !6, !7, !8, !9, !10} |
| !3 = !{!"ProfileFormat", !"InstrProf"} |
| !4 = !{!"TotalCount", i64 222} |
| !5 = !{!"MaxCount", i64 110} |
| !6 = !{!"MaxInternalCount", i64 1} |
| !7 = !{!"MaxFunctionCount", i64 110} |
| !8 = !{!"NumCounts", i64 4} |
| !9 = !{!"NumFunctions", i64 3} |
| !10 = !{!"DetailedSummary", !11} |
| !11 = !{!12, !13, !14} |
| !12 = !{i32 10000, i64 110, i32 2} |
| !13 = !{i32 999000, i64 2, i32 4} |
| !14 = !{i32 999999, i64 2, i32 4} |
| !28 = !{!"function_entry_count", i64 110} |
| !29 = !{!"function_entry_count", i64 1} |