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[MSVC2015] Fix mangling for static variables initialization guards 

It seems that suffix '@4HA' was omitted for unknown reason. It is
non-cont non-volatile 'int' type of normal variable TSS.

Differential revision: http://reviews.llvm.org/D20683

llvm-svn: 270974
This commit is contained in:
Dmitry Polukhin 2016-05-27 08:52:34 +00:00
parent c013e5737b
commit 5fa681ee78
2 changed files with 17 additions and 7 deletions
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1
clang/lib/AST/MicrosoftMangle.cpp
View File

@ -2837,6 +2837,7 @@ void MicrosoftMangleContextImpl::mangleThreadSafeStaticGuardVariable(
Mangler.getStream() << "\01?$TSS" << GuardNum << '@';
Mangler.mangleNestedName(VD);
Mangler.getStream() << "@4HA";
}
void MicrosoftMangleContextImpl::mangleStaticGuardVariable(const VarDecl *VD,

23
clang/test/CodeGenCXX/microsoft-abi-thread-safe-statics.cpp
View File

@ -9,12 +9,14 @@ struct S {
// CHECK-DAG: @"\01?s@?1??f@@YAAAUS@@XZ@4U2@A" = linkonce_odr thread_local global %struct.S zeroinitializer
// CHECK-DAG: @"\01??__J?1??f@@YAAAUS@@XZ@51" = linkonce_odr thread_local global i32 0
// CHECK-DAG: @"\01?s@?1??g@@YAAAUS@@XZ@4U2@A" = linkonce_odr global %struct.S zeroinitializer
// CHECK-DAG: @"\01?$TSS0@?1??g@@YAAAUS@@XZ" = linkonce_odr global i32 0
// CHECK-DAG: @"\01?$TSS0@?1??g@@YAAAUS@@XZ@4HA" = linkonce_odr global i32 0
// CHECK-DAG: @_Init_thread_epoch = external thread_local global i32, align 4
// CHECK-DAG: @"\01?j@?1??h@@YAAAUS@@_N@Z@4U2@A" = linkonce_odr thread_local global %struct.S zeroinitializer
// CHECK-DAG: @"\01??__J?1??h@@YAAAUS@@_N@Z@51" = linkonce_odr thread_local global i32 0
// CHECK-DAG: @"\01?i@?1??h@@YAAAUS@@_N@Z@4U2@A" = linkonce_odr global %struct.S zeroinitializer
// CHECK-DAG: @"\01?$TSS0@?1??h@@YAAAUS@@_N@Z" = linkonce_odr global i32 0
// CHECK-DAG: @"\01?$TSS0@?1??h@@YAAAUS@@_N@Z@4HA" = linkonce_odr global i32 0
// CHECK-DAG: @"\01?i@?1??g1@@YAHXZ@4HA" = internal global i32 0, align 4
// CHECK-DAG: @"\01?$TSS0@?1??g1@@YAHXZ@4HA" = internal global i32 0, align 4
// CHECK-LABEL: define {{.*}} @"\01?f@@YAAAUS@@XZ"()
// CHECK-SAME: personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
@ -51,14 +53,14 @@ extern inline S &f() {
// CHECK-LABEL: define {{.*}} @"\01?g@@YAAAUS@@XZ"()
extern inline S &g() {
static S s;
// CHECK: %[[guard:.*]] = load atomic i32, i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ" unordered, align 4
// CHECK: %[[guard:.*]] = load atomic i32, i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ@4HA" unordered, align 4
// CHECK-NEXT: %[[epoch:.*]] = load i32, i32* @_Init_thread_epoch
// CHECK-NEXT: %[[cmp:.*]] = icmp sgt i32 %[[guard]], %[[epoch]]
// CHECK-NEXT: br i1 %[[cmp]], label %[[init_attempt:.*]], label %[[init_end:.*]]
//
// CHECK: [[init_attempt]]:
// CHECK-NEXT: call void @_Init_thread_header(i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ")
// CHECK-NEXT: %[[guard2:.*]] = load atomic i32, i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ" unordered, align 4
// CHECK-NEXT: call void @_Init_thread_header(i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
// CHECK-NEXT: %[[guard2:.*]] = load atomic i32, i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ@4HA" unordered, align 4
// CHECK-NEXT: %[[cmp2:.*]] = icmp eq i32 %[[guard2]], -1
// CHECK-NEXT: br i1 %[[cmp2]], label %[[init:.*]], label %[[init_end:.*]]
//
@ -68,7 +70,7 @@ extern inline S &g() {
//
// CHECK: [[invoke_cont]]:
// CHECK-NEXT: call i32 @atexit(void ()* @"\01??__Fs@?1??g@@YAAAUS@@XZ@YAXXZ")
// CHECK-NEXT: call void @_Init_thread_footer(i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ")
// CHECK-NEXT: call void @_Init_thread_footer(i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
// CHECK-NEXT: br label %init.end
//
// CHECK: [[init_end]]:
@ -76,7 +78,7 @@ extern inline S &g() {
//
// CHECK: [[lpad]]:
// CHECK-NEXT: cleanuppad within none []
// CHECK: call void @_Init_thread_abort(i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ")
// CHECK: call void @_Init_thread_abort(i32* @"\01?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
// CHECK-NEXT: cleanupret {{.*}} unwind to caller
return s;
}
@ -86,3 +88,10 @@ extern inline S&h(bool b) {
static S i;
return b ? j : i;
}
// CHECK-LABEL: define i32 @"\01?g1@@YAHXZ"()
int f1();
int g1() {
static int i = f1();
return i;
}