2016-04-27 08:32:13 +08:00
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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/section.ll -o %t2.bc
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; RUN: llvm-lto -thinlto-action=thinlink -o %t3.bc %t.bc %t2.bc
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; Check that we don't promote 'var_with_section'
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; RUN: llvm-lto -thinlto-action=promote %t2.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=PROMOTE
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; PROMOTE: @var_with_section = internal global i32 0, section "some_section"
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; RUN: llvm-lto -thinlto-action=import %t.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=IMPORT
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; Check that section prevent import of @reference_gv_with_section.
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; IMPORT: declare void @reference_gv_with_section()
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; Canary to check that importing is correctly set up.
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; IMPORT: define available_externally void @foo()
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[ThinLTO] Fix ThinLTOCodegenerator to export llvm.used symbols
Summary:
Reapply r357931 with fixes to ThinLTO testcases and llvm-lto tool.
ThinLTOCodeGenerator currently does not preserve llvm.used symbols and
it can internalize them. In order to pass the necessary information to the
legacy ThinLTOCodeGenerator, the input to the code generator is
rewritten to be based on lto::InputFile.
Now ThinLTO using the legacy LTO API will requires data layout in
Module.
"internalize" thinlto action in llvm-lto is updated to run both
"promote" and "internalize" with the same configuration as
ThinLTOCodeGenerator. The old "promote" + "internalize" option does not
produce the same output as ThinLTOCodeGenerator.
This fixes: PR41236
rdar://problem/49293439
Reviewers: tejohnson, pcc, kromanova, dexonsmith
Reviewed By: tejohnson
Subscribers: ormris, bd1976llvm, mehdi_amini, inglorion, eraman, hiraditya, jkorous, dexonsmith, arphaman, dang, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D60421
llvm-svn: 358601
2019-04-18 01:38:09 +08:00
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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2016-04-27 08:32:13 +08:00
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define i32 @main() {
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call void @reference_gv_with_section()
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call void @foo()
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ret i32 42
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}
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declare void @reference_gv_with_section()
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declare void @foo()
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