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llvm-project/clang/test/CodeGen/ms-declspecs.cpp

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Make __declspec(selectany) turn variable declartions into definitions. Fixes PR23242. llvm-svn: 235046
2015-04-16 05:50:06 +08:00
// RUN: %clang_cc1 -triple i386-pc-win32 %s -emit-llvm -fms-compatibility -o - | FileCheck %s
// selectany turns extern "C" variable declarations into definitions.
extern __declspec(selectany) int x1;
extern "C" __declspec(selectany) int x2;
extern "C++" __declspec(selectany) int x3;
extern "C" {
__declspec(selectany) int x4;
}
Don't crash when a selectany symbol would get common linkage Things can't both be in comdats and have common linkage, so never give things in comdats common linkage. Common linkage is only used in .c files, and the only thing that can trigger a comdat in c is selectany from what I can tell. Fixes PR23243. Also address an over-the-shoulder review comment from rnk by moving the hasAttr<SelectAnyAttr>() in Decl.cpp around a bit. It only makes a minor difference for selectany on global variables, so it goes well with the rest of this patch. http://reviews.llvm.org/D9042 llvm-svn: 235053
2015-04-16 07:04:24 +08:00
__declspec(selectany) int x5;
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK: @"\01?x1@@3HA" = weak_odr dso_local global i32 0, comdat, align 4
// CHECK: @x2 = weak_odr dso_local global i32 0, comdat, align 4
// CHECK: @"\01?x3@@3HA" = weak_odr dso_local global i32 0, comdat, align 4
// CHECK: @x4 = weak_odr dso_local global i32 0, comdat, align 4
// CHECK: @"\01?x5@@3HA" = weak_odr dso_local global i32 0, comdat, align 4