commit 4a1776979fd8e9473e433d7ec6f2bbf4bf9523ff
author Jun Ma <JunMa@linux.alibaba.com> Tue Jun 16 14:30:36 2020 +0800
committer Jun Ma <JunMa@linux.alibaba.com> Wed Jun 17 08:31:13 2020 +0800
tree d4b9b40504fab9d042cac064d47ff81576690918
parent 0a5228a02c32cb5b10d43cb154d6d0abaf360ba7

[CodeGen][TLS] Set TLS Model for __tls_guard as well.

Differential Revision: https://reviews.llvm.org/D81543

clang/test/CodeGen/tls-model.cpp

diff --git a/clang/test/CodeGen/tls-model.cpp b/clang/test/CodeGen/tls-model.cpp
new file mode 100644
index 0000000..872566f
--- /dev/null
+++ b/clang/test/CodeGen/tls-model.cpp
@@ -0,0 +1,67 @@
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-GD
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -ftls-model=global-dynamic -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-GD
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -ftls-model=local-dynamic -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-LD
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -ftls-model=initial-exec -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-IE
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -ftls-model=local-exec -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-LE
+//
+// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -femulated-tls -emit-llvm -o - 2>&1 | \
+// RUN:     FileCheck %s -check-prefix=CHECK-GD
+
+int z1 = 0;
+int z2;
+int __thread x;
+int f() {
+  static int __thread y;
+  return y++;
+}
+int __thread __attribute__((tls_model("initial-exec"))) z;
+
+struct S {
+  S();
+  ~S();
+};
+struct T {
+  ~T();
+};
+
+struct S thread_local s1;
+struct T thread_local t1;
+
+// Note that unlike normal C uninitialized global variables,
+// uninitialized TLS variables do NOT have COMMON linkage.
+
+// CHECK-GD: @z1 = global i32 0
+// CHECK-GD: @z2 = global i32 0
+// CHECK-GD: @x = thread_local global i32 0
+// CHECK-GD: @_ZZ1fvE1y = internal thread_local global i32 0
+// CHECK-GD: @z = thread_local(initialexec) global i32 0
+// CHECK-GD: @s1 = thread_local global %struct.S zeroinitializer
+// CHECK-GD: @t1 = thread_local global %struct.T zeroinitializer
+// CHECK-GD: @__tls_guard = internal thread_local global i8 0
+
+// CHECK-LD: @z1 = global i32 0
+// CHECK-LD: @z2 = global i32 0
+// CHECK-LD: @x = thread_local(localdynamic) global i32 0
+// CHECK-LD: @_ZZ1fvE1y = internal thread_local(localdynamic) global i32 0
+// CHECK-LD: @z = thread_local(initialexec) global i32 0
+// CHECK-LD: @s1 = thread_local(localdynamic) global %struct.S zeroinitializer
+// CHECK-LD: @t1 = thread_local(localdynamic) global %struct.T zeroinitializer
+// CHECK-LD: @__tls_guard = internal thread_local(localdynamic) global i8 0
+
+// CHECK-IE: @z1 = global i32 0
+// CHECK-IE: @z2 = global i32 0
+// CHECK-IE: @x = thread_local(initialexec) global i32 0
+// CHECK-IE: @_ZZ1fvE1y = internal thread_local(initialexec) global i32 0
+// CHECK-IE: @z = thread_local(initialexec) global i32 0
+// CHECK-IE: @s1 = thread_local(initialexec) global %struct.S zeroinitializer
+// CHECK-IE: @t1 = thread_local(initialexec) global %struct.T zeroinitializer
+// CHECK-IE: @__tls_guard = internal thread_local(initialexec) global i8 0
+
+// CHECK-LE: @z1 = global i32 0
+// CHECK-LE: @z2 = global i32 0
+// CHECK-LE: @x = thread_local(localexec) global i32 0
+// CHECK-LE: @_ZZ1fvE1y = internal thread_local(localexec) global i32 0
+// CHECK-LE: @z = thread_local(initialexec) global i32 0
+// CHECK-LE: @s1 = thread_local(localexec) global %struct.S zeroinitializer
+// CHECK-LE: @t1 = thread_local(localexec) global %struct.T zeroinitializer
+// CHECK-LE: @__tls_guard = internal thread_local(localexec) global i8 0