1; Checks if indirect calls to static target functions that are actually 2; dead in the new binary target (due to a profile collected from a slightly 3; different binary) are properly traversed during ThinLTO liveness analysis. 4; If the liveness analysis is changed to ignore indirect edges and the 5; importer is changed to check liveness before importing, this test will 6; need adjustment (in that case _ZL3foov should not be imported/promoted, 7; and _ZL3barv can be internalized/removed). 8 9; REQUIRES: x86-registered-target 10 11; Do setup work for all below tests: generate bitcode and combined index 12; RUN: opt -module-summary %s -o %t.bc 13; RUN: opt -module-summary %p/Inputs/thinlto_samplepgo_icp2a.ll -o %t2a.bc 14; RUN: opt -module-summary %p/Inputs/thinlto_samplepgo_icp2b.ll -o %t2b.bc 15 16; Use -import-instr-limit=5 so that we don't import _ZL3barv, which would 17; hide the problem. 18; RUN: llvm-lto2 run -save-temps -import-instr-limit=5 -o %t3 %t.bc %t2a.bc %t2b.bc -r %t.bc,fptr,plx -r %t.bc,main,plx -r %t2a.bc,_ZL3barv,l -r %t2b.bc,_ZL3barv,pl -print-imports 2>&1 | FileCheck %s --check-prefix=IMPORTS2 19; IMPORTS2-NOT: Import _ZL3barv 20; IMPORTS2: Import _ZL3foov.llvm.0 21; IMPORTS2-NOT: Import _ZL3barv 22; RUN: llvm-nm %t3.2 | FileCheck %s --check-prefix=NM 23; NM: _ZL3barv 24; RUN: llvm-dis < %t3.3.2.internalize.bc | FileCheck %s --check-prefix=INTERNALIZE 25; INTERNALIZE: define dso_local void @_ZL3barv 26 27target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 28target triple = "x86_64-unknown-linux-gnu" 29 30@fptr = local_unnamed_addr global void ()* null, align 8 31 32; Function Attrs: norecurse uwtable 33define i32 @main() local_unnamed_addr #0 !prof !34 { 34entry: 35 %0 = load void ()*, void ()** @fptr, align 8 36; ICALL-PROM: br i1 %{{[0-9]+}}, label %if.true.direct_targ, label %if.false.orig_indirect 37 tail call void %0(), !prof !40 38 ret i32 0 39} 40 41!llvm.dbg.cu = !{!0} 42!llvm.module.flags = !{!3,!4} 43!llvm.ident = !{!31} 44 45!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 297016)", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) 46!1 = !DIFile(filename: "main.cc", directory: ".") 47!2 = !{} 48!3 = !{i32 2, !"Debug Info Version", i32 3} 49!4 = !{i32 1, !"ProfileSummary", !5} 50!5 = !{!6, !7, !8, !9, !10, !11, !12, !13} 51!6 = !{!"ProfileFormat", !"SampleProfile"} 52!7 = !{!"TotalCount", i64 3003} 53!8 = !{!"MaxCount", i64 3000} 54!9 = !{!"MaxInternalCount", i64 0} 55!10 = !{!"MaxFunctionCount", i64 0} 56!11 = !{!"NumCounts", i64 3} 57!12 = !{!"NumFunctions", i64 1} 58!13 = !{!"DetailedSummary", !14} 59!14 = !{!15, !16, !17, !18, !19, !20, !20, !21, !21, !22, !23, !24, !25, !26, !27, !28, !29, !30} 60!15 = !{i32 10000, i64 3000, i32 1} 61!16 = !{i32 100000, i64 3000, i32 1} 62!17 = !{i32 200000, i64 3000, i32 1} 63!18 = !{i32 300000, i64 3000, i32 1} 64!19 = !{i32 400000, i64 3000, i32 1} 65!20 = !{i32 500000, i64 3000, i32 1} 66!21 = !{i32 600000, i64 3000, i32 1} 67!22 = !{i32 700000, i64 3000, i32 1} 68!23 = !{i32 800000, i64 3000, i32 1} 69!24 = !{i32 900000, i64 3000, i32 1} 70!25 = !{i32 950000, i64 3000, i32 1} 71!26 = !{i32 990000, i64 3000, i32 1} 72!27 = !{i32 999000, i64 3000, i32 1} 73!28 = !{i32 999900, i64 2, i32 2} 74!29 = !{i32 999990, i64 2, i32 2} 75!30 = !{i32 999999, i64 2, i32 2} 76!31 = !{!"clang version 5.0.0 (trunk 297016)"} 77!34 = !{!"function_entry_count", i64 1} 78!40 = !{!"VP", i32 0, i64 3000, i64 -8789629626369651636, i64 3000} 79