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Emit dtors into proper section while compiling in vcpp-compatible mode. 

Patch by Kai!

llvm-svn: 164476
This commit is contained in:
Anton Korobeynikov 2012-09-23 15:53:47 +00:00
parent e7a1ba5e8b
commit 37d73002d4
2 changed files with 31 additions and 12 deletions
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20
llvm/lib/MC/MCObjectFileInfo.cpp
View File

@ -430,12 +430,20 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
}
StaticDtorSection =
Ctx->getCOFFSection(".dtors",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
SectionKind::getDataRel());
if (T.getOS() == Triple::Win32) {
StaticDtorSection =
Ctx->getCOFFSection(".CRT$XTX",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ,
SectionKind::getReadOnly());
} else {
StaticDtorSection =
Ctx->getCOFFSection(".dtors",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
SectionKind::getDataRel());
}
// FIXME: We're emitting LSDA info into a readonly section on COFF, even
// though it contains relocatable pointers. In PIC mode, this is probably a

15
llvm/test/MC/COFF/global_ctors.ll → llvm/test/MC/COFF/global_ctors_dtors.ll
View File

@ -6,9 +6,11 @@
; RUN: llc < %s -mtriple x86_64-pc-mingw32 | FileCheck %s --check-prefix MINGW32
@.str = private unnamed_addr constant [13 x i8] c"constructing\00", align 1
@.str2 = private unnamed_addr constant [5 x i8] c"main\00", align 1
@.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 }]
declare i32 @puts(i8*)
@ -17,12 +19,21 @@ define void @a_global_ctor() nounwind {
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
}
define i32 @main() nounwind {
%1 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str2, i32 0, i32 0))
%1 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str3, i32 0, i32 0))
ret i32 0
}
; WIN32: .section .CRT$XCU,"r"
; WIN32: a_global_ctor
; WIN32: .section .CRT$XTX,"r"
; WIN32: a_global_dtor
; MINGW32: .section .ctors,"w"
; MINGW32: a_global_ctor
; MINGW32: .section .dtors,"w"
; MINGW32: a_global_dtor