2016-10-09 00:11:42 +08:00
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; Test to check the callgraph for call to alias in module.
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; RUN: opt -module-summary %s -o %t.o
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; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
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; CHECK: <GLOBALVAL_SUMMARY_BLOCK
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; CHECK-NEXT: <VERSION
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[LTO] Record whether LTOUnit splitting is enabled in index
Summary:
Records in the module summary index whether the bitcode was compiled
with the option necessary to enable splitting the LTO unit
(e.g. -fsanitize=cfi, -fwhole-program-vtables, or -fsplit-lto-unit).
The information is passed down to the ModuleSummaryIndex builder via a
new module flag "EnableSplitLTOUnit", which is propagated onto a flag
on the summary index.
This is then used during the LTO link to check whether all linked
summaries were built with the same value of this flag. If not, an error
is issued when we detect a situation requiring whole program visibility
of the class hierarchy. This is the case when both of the following
conditions are met:
1) We are performing LowerTypeTests or Whole Program Devirtualization.
2) There are type tests or type checked loads in the code.
Note I have also changed the ThinLTOBitcodeWriter to also gate the
module splitting on the value of this flag.
Reviewers: pcc
Subscribers: ormris, mehdi_amini, Prazek, inglorion, eraman, steven_wu, dexonsmith, arphaman, dang, llvm-commits
Differential Revision: https://reviews.llvm.org/D53890
llvm-svn: 350948
2019-01-12 02:31:57 +08:00
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; CHECK-NEXT: <FLAGS
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2018-11-16 15:08:00 +08:00
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; CHECK-NEXT: <PERMODULE {{.*}} op4=0 op5=0 op6=[[ALIASID:[0-9]+]]/>
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2016-10-09 00:11:42 +08:00
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; CHECK-NEXT: <PERMODULE {{.*}} op0=[[ALIASEEID:[0-9]+]]
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; CHECK-NEXT: <ALIAS {{.*}} op0=[[ALIASID]] {{.*}} op2=[[ALIASEEID]]/>
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; CHECK-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
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; ModuleID = 'thinlto-alias2.ll'
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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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define i32 @main() {
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entry:
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call void (...) @analias()
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ret i32 0
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}
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@analias = alias void (...), bitcast (void ()* @aliasee to void (...)*)
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define void @aliasee() #0 {
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entry:
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ret void
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}
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