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1ce3088669
This allows us to put dynamic initializers for weak data into the same comdat group as the data being initialized. This is necessary for MSVC ABI compatibility. Once we have comdats for guard variables, we can use the combination to help GlobalOpt fire more often for weak data with guarded initialization on other platforms. Reviewers: nlewycky Differential Revision: http://reviews.llvm.org/D3499 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209015 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
1.2 KiB
LLVM
30 lines
1.2 KiB
LLVM
; RUN: llvm-as %s -o %t.new.bc
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; RUN: llvm-link %t.new.bc %S/Inputs/old_global_ctors.3.4.bc | llvm-dis | FileCheck %s
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; old_global_ctors.3.4.bc contains the following LLVM IL, assembled into
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; bitcode by llvm-as from 3.4. It uses a two element @llvm.global_ctors array.
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; ---
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; declare void @a_global_ctor()
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; declare void @b_global_ctor()
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;
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; @llvm.global_ctors = appending global [2 x { i32, void ()* } ] [
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; { i32, void ()* } { i32 65535, void ()* @a_global_ctor },
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; { i32, void ()* } { i32 65535, void ()* @b_global_ctor }
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; ]
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; ---
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declare void @c_global_ctor()
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declare void @d_global_ctor()
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@llvm.global_ctors = appending global [2 x { i32, void ()*, i8* } ] [
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{ i32, void ()*, i8* } { i32 65535, void ()* @c_global_ctor, i8* null },
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{ i32, void ()*, i8* } { i32 65535, void ()* @d_global_ctor, i8* null }
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]
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; CHECK: @llvm.global_ctors = appending global [4 x { i32, void ()*, i8* }] [
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; CHECK-DAG: { i32, void ()*, i8* } { i32 65535, void ()* @a_global_ctor, i8* null }
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; CHECK-DAG: { i32, void ()*, i8* } { i32 65535, void ()* @b_global_ctor, i8* null }
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; CHECK-DAG: { i32, void ()*, i8* } { i32 65535, void ()* @c_global_ctor, i8* null }
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; CHECK-DAG: { i32, void ()*, i8* } { i32 65535, void ()* @d_global_ctor, i8* null }
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; CHECK: ]
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