101 lines
4.4 KiB
C++
101 lines
4.4 KiB
C++
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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
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// REQUIRES: asserts
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struct S {
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S();
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~S();
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};
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// CHECK-DAG: @"?s@?1??f@@YAAAUS@@XZ@4U2@A" = linkonce_odr dso_local thread_local global %struct.S zeroinitializer
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// CHECK-DAG: @"??__J?1??f@@YAAAUS@@XZ@51" = linkonce_odr thread_local global i32 0
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// CHECK-DAG: @"?s@?1??g@@YAAAUS@@XZ@4U2@A" = linkonce_odr dso_local global %struct.S zeroinitializer
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// CHECK-DAG: @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA" = linkonce_odr global i32 0
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// CHECK-DAG: @_Init_thread_epoch = external thread_local global i32, align 4
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// CHECK-DAG: @"?j@?1??h@@YAAAUS@@_N@Z@4U2@A" = linkonce_odr dso_local thread_local global %struct.S zeroinitializer
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// CHECK-DAG: @"??__J?1??h@@YAAAUS@@_N@Z@51" = linkonce_odr thread_local global i32 0
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// CHECK-DAG: @"?i@?1??h@@YAAAUS@@_N@Z@4U2@A" = linkonce_odr dso_local global %struct.S zeroinitializer
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// CHECK-DAG: @"?$TSS0@?1??h@@YAAAUS@@_N@Z@4HA" = linkonce_odr global i32 0
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// CHECK-DAG: @"?i@?1??g1@@YAHXZ@4HA" = internal global i32 0, align 4
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// CHECK-DAG: @"?$TSS0@?1??g1@@YAHXZ@4HA" = internal global i32 0, align 4
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// CHECK-LABEL: define {{.*}} @"?f@@YAAAUS@@XZ"()
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// CHECK-SAME: personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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extern inline S &f() {
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static thread_local S s;
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// CHECK: %[[guard:.*]] = load i32, i32* @"??__J?1??f@@YAAAUS@@XZ@51"
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// CHECK-NEXT: %[[mask:.*]] = and i32 %[[guard]], 1
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// CHECK-NEXT: %[[cmp:.*]] = icmp eq i32 %[[mask]], 0
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// CHECK-NEXT: br i1 %[[cmp]], label %[[init:.*]], label %[[init_end:.*]], !prof ![[unlikely_threadlocal:.*]]
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//
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// CHECK: [[init]]:
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// CHECK-NEXT: %[[or:.*]] = or i32 %[[guard]], 1
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// CHECK-NEXT: store i32 %[[or]], i32* @"??__J?1??f@@YAAAUS@@XZ@51"
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// CHECK-NEXT: invoke {{.*}} @"??0S@@QAE@XZ"(%struct.S* {{[^,]*}} @"?s@?1??f@@YAAAUS@@XZ@4U2@A")
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// CHECK-NEXT: to label %[[invoke_cont:.*]] unwind label %[[lpad:.*]]
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//
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// CHECK: [[invoke_cont]]:
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// CHECK-NEXT: call i32 @__tlregdtor(void ()* @"??__Fs@?1??f@@YAAAUS@@XZ@YAXXZ")
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// CHECK-NEXT: br label %[[init_end:.*]]
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// CHECK: [[init_end]]:
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// CHECK-NEXT: ret %struct.S* @"?s@?1??f@@YAAAUS@@XZ@4U2@A"
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// CHECK: [[lpad:.*]]:
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// CHECK-NEXT: cleanuppad within none []
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// CHECK: %[[guard:.*]] = load i32, i32* @"??__J?1??f@@YAAAUS@@XZ@51"
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// CHECK-NEXT: %[[mask:.*]] = and i32 %[[guard]], -2
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// CHECK-NEXT: store i32 %[[mask]], i32* @"??__J?1??f@@YAAAUS@@XZ@51"
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// CHECK-NEXT: cleanupret {{.*}} unwind to caller
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return s;
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}
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// CHECK-LABEL: define {{.*}} @"?g@@YAAAUS@@XZ"()
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extern inline S &g() {
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static S s;
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// CHECK: %[[guard:.*]] = load atomic i32, i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA" unordered, align 4
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// CHECK-NEXT: %[[epoch:.*]] = load i32, i32* @_Init_thread_epoch
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// CHECK-NEXT: %[[cmp:.*]] = icmp sgt i32 %[[guard]], %[[epoch]]
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// CHECK-NEXT: br i1 %[[cmp]], label %[[init_attempt:.*]], label %[[init_end:.*]], !prof ![[unlikely_staticlocal:.*]]
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//
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// CHECK: [[init_attempt]]:
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// CHECK-NEXT: call void @_Init_thread_header(i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
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// CHECK-NEXT: %[[guard2:.*]] = load atomic i32, i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA" unordered, align 4
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// CHECK-NEXT: %[[cmp2:.*]] = icmp eq i32 %[[guard2]], -1
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// CHECK-NEXT: br i1 %[[cmp2]], label %[[init:.*]], label %[[init_end:.*]]
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//
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// CHECK: [[init]]:
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// CHECK-NEXT: invoke {{.*}} @"??0S@@QAE@XZ"(%struct.S* {{[^,]*}} @"?s@?1??g@@YAAAUS@@XZ@4U2@A")
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// CHECK-NEXT: to label %[[invoke_cont:.*]] unwind label %[[lpad:.*]]
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//
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// CHECK: [[invoke_cont]]:
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// CHECK-NEXT: call i32 @atexit(void ()* @"??__Fs@?1??g@@YAAAUS@@XZ@YAXXZ")
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// CHECK-NEXT: call void @_Init_thread_footer(i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
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// CHECK-NEXT: br label %init.end
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//
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// CHECK: [[init_end]]:
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// CHECK-NEXT: ret %struct.S* @"?s@?1??g@@YAAAUS@@XZ@4U2@A"
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//
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// CHECK: [[lpad]]:
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// CHECK-NEXT: cleanuppad within none []
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// CHECK: call void @_Init_thread_abort(i32* @"?$TSS0@?1??g@@YAAAUS@@XZ@4HA")
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// CHECK-NEXT: cleanupret {{.*}} unwind to caller
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return s;
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}
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extern inline S&h(bool b) {
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static thread_local S j;
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static S i;
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return b ? j : i;
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}
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// CHECK-LABEL: define dso_local i32 @"?g1@@YAHXZ"()
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int f1();
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int g1() {
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static int i = f1();
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return i;
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}
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// CHECK-DAG: ![[unlikely_threadlocal]] = !{!"branch_weights", i32 1, i32 1023}
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// CHECK-DAG: ![[unlikely_staticlocal]] = !{!"branch_weights", i32 1, i32 1048575}
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