1// RUN: %clang -target x86_64-unknown-linux -fsanitize=thread %s -S -emit-llvm -o - | FileCheck %s 2// RUN: %clang -O1 -target x86_64-unknown-linux -fsanitize=thread %s -S -emit-llvm -o - | FileCheck %s 3// RUN: %clang -O2 -target x86_64-unknown-linux -fsanitize=thread %s -S -emit-llvm -o - | FileCheck %s 4// RUN: %clang -O3 -target x86_64-unknown-linux -fsanitize=thread %s -S -emit-llvm -o - | FileCheck %s 5// RUN: %clang -target x86_64-unknown-linux -fsanitize=thread %s -S -emit-llvm -o - | FileCheck %s 6// Verify that -fsanitize=thread invokes tsan instrumentation. 7 8int foo(int *a) { return *a; } 9// CHECK: __tsan_init 10