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dcf1ffe8a0
Now that we have a way to mark GlobalValues as local we can use the symbol resolutions that the linker plugin provides as part of lto/thinlto link step to refine the compilers view on what symbols will end up being local. Originally commited as r317374, but reverted in r317395 to update some missed tests. Differential Revision: https://reviews.llvm.org/D35702 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317408 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
3.3 KiB
LLVM
79 lines
3.3 KiB
LLVM
; Checks if indirect calls to static target functions that are actually
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; dead in the new binary target (due to a profile collected from a slightly
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; different binary) are properly traversed during ThinLTO liveness analysis.
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; If the liveness analysis is changed to ignore indirect edges and the
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; importer is changed to check liveness before importing, this test will
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; need adjustment (in that case _ZL3foov should not be imported/promoted,
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; and _ZL3barv can be internalized/removed).
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; REQUIRES: x86-registered-target
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; Do setup work for all below tests: generate bitcode and combined index
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; RUN: opt -module-summary %s -o %t.bc
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; RUN: opt -module-summary %p/Inputs/thinlto_samplepgo_icp2a.ll -o %t2a.bc
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; RUN: opt -module-summary %p/Inputs/thinlto_samplepgo_icp2b.ll -o %t2b.bc
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; Use -import-instr-limit=5 so that we don't import _ZL3barv, which would
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; hide the problem.
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; 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
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; IMPORTS2-NOT: Import _ZL3barv
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; IMPORTS2: Import _ZL3foov.llvm.0
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; IMPORTS2-NOT: Import _ZL3barv
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; RUN: llvm-nm %t3.2 | FileCheck %s --check-prefix=NM
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; NM: _ZL3barv
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; RUN: llvm-dis < %t3.2.2.internalize.bc | FileCheck %s --check-prefix=INTERNALIZE
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; INTERNALIZE: define dso_local void @_ZL3barv
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@fptr = local_unnamed_addr global void ()* null, align 8
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; Function Attrs: norecurse uwtable
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define i32 @main() local_unnamed_addr #0 !prof !34 {
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entry:
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%0 = load void ()*, void ()** @fptr, align 8
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; ICALL-PROM: br i1 %{{[0-9]+}}, label %if.true.direct_targ, label %if.false.orig_indirect
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tail call void %0(), !prof !40
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ret i32 0
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3,!4}
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!llvm.ident = !{!31}
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!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)
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!1 = !DIFile(filename: "main.cc", directory: ".")
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!2 = !{}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"ProfileSummary", !5}
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!5 = !{!6, !7, !8, !9, !10, !11, !12, !13}
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!6 = !{!"ProfileFormat", !"SampleProfile"}
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!7 = !{!"TotalCount", i64 3003}
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!8 = !{!"MaxCount", i64 3000}
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!9 = !{!"MaxInternalCount", i64 0}
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!10 = !{!"MaxFunctionCount", i64 0}
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!11 = !{!"NumCounts", i64 3}
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!12 = !{!"NumFunctions", i64 1}
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!13 = !{!"DetailedSummary", !14}
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!14 = !{!15, !16, !17, !18, !19, !20, !20, !21, !21, !22, !23, !24, !25, !26, !27, !28, !29, !30}
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!15 = !{i32 10000, i64 3000, i32 1}
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!16 = !{i32 100000, i64 3000, i32 1}
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!17 = !{i32 200000, i64 3000, i32 1}
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!18 = !{i32 300000, i64 3000, i32 1}
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!19 = !{i32 400000, i64 3000, i32 1}
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!20 = !{i32 500000, i64 3000, i32 1}
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!21 = !{i32 600000, i64 3000, i32 1}
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!22 = !{i32 700000, i64 3000, i32 1}
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!23 = !{i32 800000, i64 3000, i32 1}
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!24 = !{i32 900000, i64 3000, i32 1}
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!25 = !{i32 950000, i64 3000, i32 1}
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!26 = !{i32 990000, i64 3000, i32 1}
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!27 = !{i32 999000, i64 3000, i32 1}
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!28 = !{i32 999900, i64 2, i32 2}
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!29 = !{i32 999990, i64 2, i32 2}
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!30 = !{i32 999999, i64 2, i32 2}
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!31 = !{!"clang version 5.0.0 (trunk 297016)"}
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!34 = !{!"function_entry_count", i64 1}
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!40 = !{!"VP", i32 0, i64 3000, i64 -8789629626369651636, i64 3000}
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