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b51e8c39ae
Summary: COFF requires that COMDAT name match that of the leader. When we promote and rename an internal leader in ThinLTO due to an import, ensure we subsequently rename the associated COMDAT. Similar to D31963 which did this during ThinLTO module splitting. Fixes PR40414. Reviewers: pcc, inglorion Subscribers: mehdi_amini, dexonsmith, dmajor, llvm-commits Differential Revision: https://reviews.llvm.org/D57395 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352763 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
1.2 KiB
LLVM
33 lines
1.2 KiB
LLVM
; Test to ensure that comdat is renamed consistently when comdat leader is
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; promoted and renamed due to an import. Required by COFF.
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; REQUIRES: x86-registered-target
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; RUN: opt -thinlto-bc -o %t1.bc %s
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; RUN: opt -thinlto-bc -o %t2.bc %S/Inputs/comdat.ll
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; RUN: llvm-lto2 run -save-temps -o %t3 %t1.bc %t2.bc \
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; RUN: -r %t1.bc,lwt_fun,plx \
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; RUN: -r %t2.bc,main,plx \
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; RUN: -r %t2.bc,lwt_fun,
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; RUN: llvm-dis -o - %t3.1.3.import.bc | FileCheck %s
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.0.24215"
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; CHECK: $lwt.llvm.[[HASH:[0-9]+]] = comdat any
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$lwt = comdat any
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; CHECK: @lwt_aliasee = private unnamed_addr global {{.*}}, comdat($lwt.llvm.[[HASH]])
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@lwt_aliasee = private unnamed_addr global [1 x i8*] [i8* null], comdat($lwt)
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; CHECK: @lwt.llvm.[[HASH]] = hidden unnamed_addr alias
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@lwt = internal unnamed_addr alias [1 x i8*], [1 x i8*]* @lwt_aliasee
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; Below function should get imported into other module, resulting in @lwt being
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; promoted and renamed.
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define i8* @lwt_fun() {
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%1 = getelementptr inbounds [1 x i8*], [1 x i8*]* @lwt, i32 0, i32 0
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%2 = load i8*, i8** %1
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ret i8* %2
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}
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