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llvm-project/clang/test/CodeGen/thread-specifier.c

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FileCheckize. llvm-svn: 120648
2010-12-02 10:30:43 +08:00
// RUN: %clang_cc1 -triple i686-pc-linux-gnu -emit-llvm -o - %s | FileCheck %s
[RISCV] Mark TLS as supported Inform Clang that TLS is implemented by LLVM for RISC-V Differential Revision: https://reviews.llvm.org/D57055 llvm-svn: 363776
2019-06-19 16:53:46 +08:00
// RUN: %clang_cc1 -triple riscv32 -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple riscv64 -emit-llvm -o - %s | FileCheck %s
PR3853: Add CodeGen support for __thread. llvm-svn: 69545
2009-04-20 05:05:03 +08:00
FileCheckize. llvm-svn: 120648
2010-12-02 10:30:43 +08:00
// CHECK: @b = external thread_local global
// CHECK: @d.e = internal thread_local global
// CHECK: @d.f = internal thread_local global
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
// CHECK: @f.a = internal thread_local(initialexec) global
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences For a default visibility external linkage definition, dso_local is set for ELF -fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences. To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition, which sets dso_local for default visibility external linkage definitions. To make this flip smooth and enable future (dso_local as definition default), this patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
2020-12-31 16:27:11 +08:00
// CHECK: @a ={{.*}} thread_local global
// CHECK: @g ={{.*}} thread_local global
// CHECK: @h ={{.*}} thread_local(localdynamic) global
// CHECK: @i ={{.*}} thread_local(initialexec) global
// CHECK: @j ={{.*}} thread_local(localexec) global
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
Don't emit _ZTW wrappers for TLS variables which don't use the C++ thread_local keyword. llvm-svn: 180004
2013-04-22 16:06:17 +08:00
// CHECK-NOT: @_ZTW
// CHECK-NOT: @_ZTH
PR3853: Add CodeGen support for __thread. llvm-svn: 69545
2009-04-20 05:05:03 +08:00
__thread int a;
extern __thread int b;
FileCheckize. llvm-svn: 120648
2010-12-02 10:30:43 +08:00
int c() { return *&b; }
PR3853: Add CodeGen support for __thread. llvm-svn: 69545
2009-04-20 05:05:03 +08:00
int d() {
__thread static int e;
__thread static union {float a; int b;} f = {.b = 1};
FileCheckize. llvm-svn: 120648
2010-12-02 10:30:43 +08:00
return 0;
PR3853: Add CodeGen support for __thread. llvm-svn: 69545
2009-04-20 05:05:03 +08:00
}
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
__thread int g __attribute__((tls_model("global-dynamic")));
__thread int h __attribute__((tls_model("local-dynamic")));
__thread int i __attribute__((tls_model("initial-exec")));
__thread int j __attribute__((tls_model("local-exec")));
int f() {
__thread static int a __attribute__((tls_model("initial-exec")));
return a++;
}