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4fc1c31a27
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
27 lines
1.0 KiB
LLVM
27 lines
1.0 KiB
LLVM
; 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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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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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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