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llvm-project/clang/test/Sema/attr-tls_model.c

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Add triple to test/Sema/attr-tls_model.c Not all targets support __thread variables. llvm-svn: 159080
2012-06-23 21:16:37 +08:00
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -verify -fsyntax-only %s
Support the tls_model attribute (PR9788) This adds support for the tls_model attribute. This allows the user to choose a TLS model that is better than what LLVM would select by default. For example, a variable might be declared as: __thread int x __attribute__((tls_model("initial-exec"))); if it will not be used in a shared library that is dlopen'ed. This depends on LLVM r159077. llvm-svn: 159078
2012-06-23 19:51:46 +08:00
#if !__has_attribute(tls_model)
#error "Should support tls_model attribute"
#endif
int f() __attribute((tls_model("global-dynamic"))); // expected-error {{'tls_model' attribute only applies to thread-local variables}}
int x __attribute((tls_model("global-dynamic"))); // expected-error {{'tls_model' attribute only applies to thread-local variables}}
static __thread int y __attribute((tls_model("global-dynamic"))); // no-warning
static __thread int y __attribute((tls_model("local", "dynamic"))); // expected-error {{attribute takes one argument}}
static __thread int y __attribute((tls_model(123))); // expected-error {{argument to tls_model attribute was not a string literal}}
static __thread int y __attribute((tls_model("foobar"))); // expected-error {{tls_model must be "global-dynamic", "local-dynamic", "initial-exec" or "local-exec"}}