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| // RUN: %clang_cc1 -fexceptions -fcxx-exceptions -fms-extensions -fms-compatibility -fms-compatibility-version=19 -std=c++11 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s
// REQUIRES: asserts
struct S {
S();
~S();
};
// CHECK-DAG: @"?s@?1??f@@YAAAUS@@XZ@4U2@A" = linkonce_odr dso_local thread_local global %struct.S zeroinitializer
// CHECK-DAG: @"??__J?1??f@@YAAAUS@@XZ@51" = linkonce_odr thread_local global i32 0
// CHECK-DAG: @"?s@?1??g@@YAAAUS@@XZ@4U2@A" = linkonce_odr dso_local global %struct.S zeroinitializer
// CHECK-DAG: @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA" = linkonce_odr global i32 0
// CHECK-DAG: @_Init_thread_epoch = external thread_local global i32, align 4
// CHECK-DAG: @"?j@?1??h@@YAAAUS@@_N@Z@4U2@A" = linkonce_odr dso_local thread_local global %struct.S zeroinitializer
// CHECK-DAG: @"??__J?1??h@@YAAAUS@@_N@Z@51" = linkonce_odr thread_local global i32 0
// CHECK-DAG: @"?i@?1??h@@YAAAUS@@_N@Z@4U2@A" = linkonce_odr dso_local global %struct.S zeroinitializer
// CHECK-DAG: @"?$TSS0@?1??h@@YAAAUS@@_N@Z@4HA" = linkonce_odr global i32 0
// CHECK-DAG: @"?i@?1??g1@@YAHXZ@4HA" = internal global i32 0, align 4
// CHECK-DAG: @"?$TSS0@?1??g1@@YAHXZ@4HA" = internal global i32 0, align 4
// CHECK-LABEL: define {{.*}} @"?f@@YAAAUS@@XZ"()
// CHECK-SAME: personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
extern inline S &f() {
static thread_local S s;
// CHECK: %[[guard:.*]] = load i32, i32* @"??__J?1??f@@YAAAUS@@XZ@51"
// CHECK-NEXT: %[[mask:.*]] = and i32 %[[guard]], 1
// CHECK-NEXT: %[[cmp:.*]] = icmp eq i32 %[[mask]], 0
// CHECK-NEXT: br i1 %[[cmp]], label %[[init:.*]], label %[[init_end:.*]], !prof ![[unlikely_threadlocal:.*]]
//
// CHECK: [[init]]:
// CHECK-NEXT: %[[or:.*]] = or i32 %[[guard]], 1
// CHECK-NEXT: store i32 %[[or]], i32* @"??__J?1??f@@YAAAUS@@XZ@51"
// CHECK-NEXT: invoke {{.*}} @"??0S@@QAE@XZ"(%struct.S* @"?s@?1??f@@YAAAUS@@XZ@4U2@A")
// CHECK-NEXT: to label %[[invoke_cont:.*]] unwind label %[[lpad:.*]]
//
// CHECK: [[invoke_cont]]:
// CHECK-NEXT: call i32 @__tlregdtor(void ()* @"??__Fs@?1??f@@YAAAUS@@XZ@YAXXZ")
// CHECK-NEXT: br label %[[init_end:.*]]
// CHECK: [[init_end]]:
// CHECK-NEXT: ret %struct.S* @"?s@?1??f@@YAAAUS@@XZ@4U2@A"
// CHECK: [[lpad:.*]]:
// CHECK-NEXT: cleanuppad within none []
// CHECK: %[[guard:.*]] = load i32, i32* @"??__J?1??f@@YAAAUS@@XZ@51"
// CHECK-NEXT: %[[mask:.*]] = and i32 %[[guard]], -2
// CHECK-NEXT: store i32 %[[mask]], i32* @"??__J?1??f@@YAAAUS@@XZ@51"
// CHECK-NEXT: cleanupret {{.*}} unwind to caller
return s;
}
// CHECK-LABEL: define {{.*}} @"?g@@YAAAUS@@XZ"()
extern inline S &g() {
static S s;
// CHECK: %[[guard:.*]] = load atomic i32, i32* @"?$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:.*]], !prof ![[unlikely_staticlocal:.*]]
//
// CHECK: [[init_attempt]]:
// CHECK-NEXT: call void @_Init_thread_header(i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
// CHECK-NEXT: %[[guard2:.*]] = load atomic i32, i32* @"?$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:.*]]
//
// CHECK: [[init]]:
// CHECK-NEXT: invoke {{.*}} @"??0S@@QAE@XZ"(%struct.S* @"?s@?1??g@@YAAAUS@@XZ@4U2@A")
// CHECK-NEXT: to label %[[invoke_cont:.*]] unwind label %[[lpad:.*]]
//
// CHECK: [[invoke_cont]]:
// CHECK-NEXT: call i32 @atexit(void ()* @"??__Fs@?1??g@@YAAAUS@@XZ@YAXXZ")
// CHECK-NEXT: call void @_Init_thread_footer(i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
// CHECK-NEXT: br label %init.end
//
// CHECK: [[init_end]]:
// CHECK-NEXT: ret %struct.S* @"?s@?1??g@@YAAAUS@@XZ@4U2@A"
//
// CHECK: [[lpad]]:
// CHECK-NEXT: cleanuppad within none []
// CHECK: call void @_Init_thread_abort(i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
// CHECK-NEXT: cleanupret {{.*}} unwind to caller
return s;
}
extern inline S&h(bool b) {
static thread_local S j;
static S i;
return b ? j : i;
}
// CHECK-LABEL: define dso_local i32 @"?g1@@YAHXZ"()
int f1();
int g1() {
static int i = f1();
return i;
}
// CHECK-DAG: ![[unlikely_threadlocal]] = !{!"branch_weights", i32 1, i32 1023}
// CHECK-DAG: ![[unlikely_staticlocal]] = !{!"branch_weights", i32 1, i32 1048575}
|