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

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Replace some stray uses of the old spelling of the flag with the new spelling. NFC. llvm-svn: 291851
2017-01-13 06:43:37 +08:00
// RUN: %clang_cc1 -triple i386-pc-win32 %s -emit-llvm -fms-compatibility -O2 -disable-llvm-passes -o - | FileCheck %s
Turned on support for __declspecs: noreturn, noinline, nothrow and naked in MS compatibility mode. llvm-svn: 151295
2012-02-24 06:46:33 +08:00
Implement __declspec(selectany) under -fms-extensions selectany only applies to externally visible global variables. It has the effect of making the data weak_odr. The MSDN docs suggest that unused definitions can only be dropped at linktime, so Clang uses weak instead of linkonce. MSVC optimizes away references to constant selectany data, so it must assume that there is only one definition, hence weak_odr. Reviewers: espindola Differential Revision: http://llvm-reviews.chandlerc.com/D814 llvm-svn: 182266
2013-05-20 22:02:37 +08:00
__declspec(selectany) int x1 = 1;
const __declspec(selectany) int x2 = 2;
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: @x1 = weak_odr dso_local global i32 1, comdat, align 4
// CHECK: @x2 = weak_odr dso_local constant i32 2, comdat, align 4
Implement __declspec(selectany) under -fms-extensions selectany only applies to externally visible global variables. It has the effect of making the data weak_odr. The MSDN docs suggest that unused definitions can only be dropped at linktime, so Clang uses weak instead of linkonce. MSVC optimizes away references to constant selectany data, so it must assume that there is only one definition, hence weak_odr. Reviewers: espindola Differential Revision: http://llvm-reviews.chandlerc.com/D814 llvm-svn: 182266
2013-05-20 22:02:37 +08:00
Make __declspec(selectany) turn variable declartions into definitions. Fixes PR23242. llvm-svn: 235046
2015-04-16 05:50:06 +08:00
// selectany turns extern variable declarations into definitions.
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 x3;
extern __declspec(selectany) int x4;
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: @x3 = weak_odr dso_local global i32 0, comdat, align 4
// CHECK: @x4 = weak_odr dso_local global i32 0, comdat, align 4
Make __declspec(selectany) turn variable declartions into definitions. Fixes PR23242. llvm-svn: 235046
2015-04-16 05:50:06 +08:00
Reapplying the changes from r158717 as they were rolled back to avoid merge conflicts from a separate problematic patch. llvm-svn: 158750
2012-06-20 06:09:27 +08:00
struct __declspec(align(16)) S {
char x;
};
union { struct S s; } u;
// CHECK: @u = {{.*}}zeroinitializer, align 16
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: define dso_local void @t3() [[NAKED:#[0-9]+]] {
Turned on support for __declspecs: noreturn, noinline, nothrow and naked in MS compatibility mode. llvm-svn: 151295
2012-02-24 06:46:33 +08:00
__declspec(naked) void t3() {}
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: define dso_local void @t22() [[NUW:#[0-9]+]]
Turned on support for __declspecs: noreturn, noinline, nothrow and naked in MS compatibility mode. llvm-svn: 151295
2012-02-24 06:46:33 +08:00
void __declspec(nothrow) t22();
void t22() {}
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: define dso_local void @t2() [[NI:#[0-9]+]] {
Turned on support for __declspecs: noreturn, noinline, nothrow and naked in MS compatibility mode. llvm-svn: 151295
2012-02-24 06:46:33 +08:00
__declspec(noinline) void t2() {}
Update to use references to attribute groups instead of listing the attributes on the call/invoke instructions. llvm-svn: 175878
2013-02-22 17:10:20 +08:00
// CHECK: call void @f20_t() [[NR:#[0-9]+]]
Turned on support for __declspecs: noreturn, noinline, nothrow and naked in MS compatibility mode. llvm-svn: 151295
2012-02-24 06:46:33 +08:00
__declspec(noreturn) void f20_t(void);
void f20(void) { f20_t(); }
Modify the tests to use attribute group references instead of listing the function attributes. llvm-svn: 175606
2013-02-20 15:22:19 +08:00
[MS Compat] Add support for __declspec(noalias) The attribute '__declspec(noalias)' communicates that the function only accesses memory pointed to by its pointer-typed arguments. llvm-svn: 242728
2015-07-21 06:51:52 +08:00
__declspec(noalias) void noalias_callee(int *x);
// CHECK: call void @noalias_callee({{.*}}) [[NA:#[0-9]+]]
void noalias_caller(int *x) { noalias_callee(x); }
Fix testcases to not rely upon target-* attributes. llvm-svn: 176135
2013-02-27 07:08:48 +08:00
// CHECK: attributes [[NAKED]] = { naked noinline nounwind{{.*}} }
// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
// CHECK: attributes [[NI]] = { noinline nounwind{{.*}} }
Update tests so that we don't test for function-only attributes on call sites. llvm-svn: 175921
2013-02-23 05:12:51 +08:00
// CHECK: attributes [[NR]] = { noreturn }
Reorder the check strings in test case following r252692. rdar://problem/19836465 llvm-svn: 252693
2015-11-11 10:13:36 +08:00
// CHECK: attributes [[NA]] = { argmemonly nounwind{{.*}} }