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Fixed placement of llvm.global_dtors on Windows. 

Differential revision: https://reviews.llvm.org/D66373

llvm-svn: 369299
This commit is contained in:
Vyacheslav Zakharin 2019-08-19 21:07:03 +00:00
parent 552bcb854c
commit f7229ac7d8
2 changed files with 72 additions and 1 deletions
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3
llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
View File

@ -1520,7 +1520,8 @@ static MCSectionCOFF *getCOFFStaticStructorSection(MCContext &Ctx,
// internally, so we use ".CRT$XCA00001" for them.
SmallString<24> Name;
raw_svector_ostream OS(Name);
OS << ".CRT$XC" << (Priority < 200 ? 'A' : 'T') << format("%05u", Priority);
OS << ".CRT$X" << (IsCtor ? "C" : "T") <<
(Priority < 200 ? 'A' : 'T') << format("%05u", Priority);
MCSectionCOFF *Sec = Ctx.getCOFFSection(
Name, COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
SectionKind::getReadOnly());

70
llvm/test/CodeGen/X86/dtor-priority-coff.ll Normal file
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@ -0,0 +1,70 @@
; RUN: llc < %s | FileCheck %s
; Check that we come up with appropriate section names that link.exe sorts
; well.
; CHECK: .section .CRT$XTA00042,"dr"
; CHECK: .p2align 3
; CHECK: .quad f
; CHECK: .section .CRT$XTT12345,"dr"
; CHECK: .p2align 3
; CHECK: .quad g
; CHECK: .section .CRT$XTT23456,"dr",associative,h
; CHECK: .p2align 3
; CHECK: .quad init_h
; CHECK: .section .CRT$XTX,"dr"
; CHECK: .p2align 3
; CHECK: .quad str3_dtor
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc19.14.26433"
$h = comdat any
@h = linkonce_odr global i8 55, comdat, align 1
@str0 = private dso_local unnamed_addr constant [6 x i8] c"later\00", align 1
@str1 = private dso_local unnamed_addr constant [6 x i8] c"first\00", align 1
@str2 = private dso_local unnamed_addr constant [5 x i8] c"main\00", align 1
@str3 = private dso_local unnamed_addr constant [8 x i8] c"default\00", align 1
@llvm.global_dtors = appending global [4 x { i32, void ()*, i8* }] [
{ i32, void ()*, i8* } { i32 12345, void ()* @g, i8* null },
{ i32, void ()*, i8* } { i32 42, void ()* @f, i8* null },
{ i32, void ()*, i8* } { i32 23456, void ()* @init_h, i8* @h },
{ i32, void ()*, i8* } { i32 65535, void ()* @str3_dtor, i8* null }
]
declare dso_local i32 @puts(i8* nocapture readonly) local_unnamed_addr
define dso_local void @g() {
entry:
%call = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @str0, i64 0, i64 0))
ret void
}
define dso_local void @f() {
entry:
%call = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @str1, i64 0, i64 0))
ret void
}
define dso_local void @str3_dtor() {
entry:
%call = tail call i32 @puts(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @str3, i64 0, i64 0))
ret void
}
define dso_local void @init_h() {
entry:
store i8 42, i8* @h
ret void
}
; Function Attrs: nounwind uwtable
define dso_local i32 @main() local_unnamed_addr {
entry:
%call = tail call i32 @puts(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @str2, i64 0, i64 0))
ret i32 0
}