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| author | Reid Kleckner <reid@kleckner.net> | 2014-05-16 20:39:27 +0000 |
|---|---|---|
| committer | Reid Kleckner <reid@kleckner.net> | 2014-05-16 20:39:27 +0000 |
| commit | 1ce308866915c9eab78486066d28d2107b7fede2 (patch) | |
| tree | 9de4e45b4a8b60edb08ccdb8d31577d12b38c2e9 /test/MC | |
| parent | dedd6203ad632d99de7648c43e482af8476ba6ed (diff) | |
| download | llvm-1ce308866915c9eab78486066d28d2107b7fede2.tar.gz llvm-1ce308866915c9eab78486066d28d2107b7fede2.tar.bz2 llvm-1ce308866915c9eab78486066d28d2107b7fede2.tar.xz | |
Add comdat key field to llvm.global_ctors and llvm.global_dtors
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
Diffstat (limited to 'test/MC')
| -rw-r--r-- | test/MC/COFF/global_ctors_dtors.ll | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/test/MC/COFF/global_ctors_dtors.ll b/test/MC/COFF/global_ctors_dtors.ll index b95093ac88..046e93a6ce 100644 --- a/test/MC/COFF/global_ctors_dtors.ll +++ b/test/MC/COFF/global_ctors_dtors.ll @@ -9,8 +9,13 @@ @.str2 = private unnamed_addr constant [12 x i8] c"destructing\00", align 1 @.str3 = private unnamed_addr constant [5 x i8] c"main\00", align 1 -@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @a_global_ctor }] -@llvm.global_dtors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @a_global_dtor }] +%ini = type { i32, void()*, i8* } + +@llvm.global_ctors = appending global [2 x %ini ] [ + %ini { i32 65535, void ()* @a_global_ctor, i8* null }, + %ini { i32 65535, void ()* @b_global_ctor, i8* bitcast (i32* @b to i8*) } +] +@llvm.global_dtors = appending global [1 x %ini ] [%ini { i32 65535, void ()* @a_global_dtor, i8* null }] declare i32 @puts(i8*) @@ -19,6 +24,13 @@ define void @a_global_ctor() nounwind { ret void } +@b = global i32 zeroinitializer + +define void @b_global_ctor() nounwind { + store i32 42, i32* @b + ret void +} + define void @a_global_dtor() nounwind { %1 = call i32 @puts(i8* getelementptr inbounds ([12 x i8]* @.str2, i32 0, i32 0)) ret void @@ -31,9 +43,13 @@ define i32 @main() nounwind { ; WIN32: .section .CRT$XCU,"rd" ; WIN32: a_global_ctor +; WIN32: .section .CRT$XCU,"rd",associative .bss,{{_?}}b +; WIN32: b_global_ctor ; WIN32: .section .CRT$XTX,"rd" ; WIN32: a_global_dtor ; MINGW32: .section .ctors,"wd" ; MINGW32: a_global_ctor +; MINGW32: .section .ctors,"wd",associative .bss,{{_?}}b +; MINGW32: b_global_ctor ; MINGW32: .section .dtors,"wd" ; MINGW32: a_global_dtor |