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013321a0f9
* Section association cannot use just the section name as many sections can have the same name. With this patch, the comdat symbol in an assoc section is interpreted to mean a symbol in the associated section and the mapping is discovered from it. * Comdat symbols were not being set correctly. Instead we were getting whatever was output first for that section. A consequence is that associative sections now must use .section to set the association. Using .linkonce would not work since it is not possible to change a sections comdat symbol (it is used to decide if we should create a new section or reuse an existing one). This includes r210298, which was reverted because it was asserting on an associated section having the same comdat as the associated section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210367 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
2.1 KiB
LLVM
66 lines
2.1 KiB
LLVM
; Test that global ctors are emitted into the proper COFF section for the
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; target. Mingw uses .ctors, whereas MSVC uses .CRT$XC*.
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; RUN: llc < %s -mtriple i686-pc-win32 | FileCheck %s --check-prefix WIN32
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; RUN: llc < %s -mtriple x86_64-pc-win32 | FileCheck %s --check-prefix WIN32
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; RUN: llc < %s -mtriple i686-pc-mingw32 | FileCheck %s --check-prefix MINGW32
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; RUN: llc < %s -mtriple x86_64-pc-mingw32 | FileCheck %s --check-prefix MINGW32
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@.str = private unnamed_addr constant [13 x i8] c"constructing\00", align 1
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@.str2 = private unnamed_addr constant [12 x i8] c"destructing\00", align 1
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@.str3 = private unnamed_addr constant [5 x i8] c"main\00", align 1
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%ini = type { i32, void()*, i8* }
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@llvm.global_ctors = appending global [3 x %ini ] [
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%ini { i32 65535, void ()* @a_global_ctor, i8* null },
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%ini { i32 65535, void ()* @b_global_ctor, i8* bitcast (i32* @b to i8*) },
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%ini { i32 65535, void ()* @c_global_ctor, i8* bitcast (i32* @c to i8*) }
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]
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@llvm.global_dtors = appending global [1 x %ini ] [%ini { i32 65535, void ()* @a_global_dtor, i8* null }]
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declare i32 @puts(i8*)
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define void @a_global_ctor() nounwind {
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%1 = call i32 @puts(i8* getelementptr inbounds ([13 x i8]* @.str, i32 0, i32 0))
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ret void
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}
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@b = global i32 zeroinitializer
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@c = available_externally dllimport global i32 zeroinitializer
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define void @b_global_ctor() nounwind {
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store i32 42, i32* @b
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ret void
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}
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define void @c_global_ctor() nounwind {
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store i32 42, i32* @c
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ret void
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}
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define void @a_global_dtor() nounwind {
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%1 = call i32 @puts(i8* getelementptr inbounds ([12 x i8]* @.str2, i32 0, i32 0))
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ret void
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}
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define i32 @main() nounwind {
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%1 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str3, i32 0, i32 0))
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ret i32 0
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}
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; WIN32: .section .CRT$XCU,"rd"
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; WIN32: a_global_ctor
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; WIN32: .section .CRT$XCU,"rd",associative,{{_?}}b
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; WIN32: b_global_ctor
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; WIN32-NOT: c_global_ctor
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; WIN32: .section .CRT$XTX,"rd"
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; WIN32: a_global_dtor
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; MINGW32: .section .ctors,"wd"
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; MINGW32: a_global_ctor
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; MINGW32: .section .ctors,"wd",associative,{{_?}}b
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; MINGW32: b_global_ctor
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; MINGW32-NOT: c_global_ctor
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; MINGW32: .section .dtors,"wd"
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; MINGW32: a_global_dtor
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