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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2019-06-05 00:04:33 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2019-06-05 00:04:33 +0000 |
| commit | 453b7caaf7f0112a7164cb132db5a39907abf6eb (patch) | |
| tree | 297385bce7484aae715a795ce0e4ffabe66c07e7 /clang/test/CodeGenCXX | |
| parent | 577d59bc679d0348ed2f0d6e759fbc728c1f8dbd (diff) | |
| download | bcm5719-llvm-453b7caaf7f0112a7164cb132db5a39907abf6eb.tar.gz bcm5719-llvm-453b7caaf7f0112a7164cb132db5a39907abf6eb.zip | |
PR42111: Use guarded initialization for thread-local variables with
unordered initialization and internal linkage.
We'll run their initializers once on each reference, so we need a guard
variable even though they only have a single definition.
llvm-svn: 362562
Diffstat (limited to 'clang/test/CodeGenCXX')
| -rw-r--r-- | clang/test/CodeGenCXX/cxx1y-variable-template.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/cxx1y-variable-template.cpp b/clang/test/CodeGenCXX/cxx1y-variable-template.cpp index dd8f28e4299..51d1b54b37a 100644 --- a/clang/test/CodeGenCXX/cxx1y-variable-template.cpp +++ b/clang/test/CodeGenCXX/cxx1y-variable-template.cpp @@ -27,4 +27,21 @@ int *p = &n<0>; // CHECK: @_ZN5OuterIA100_cE5InnerIA20_cE3arrIA3_cEE = linkonce_odr global [123 x i32] zeroinitializer // CHECK: @_ZGVN5OuterIA100_cE5InnerIA20_cE3arrIA3_cEE = linkonce_odr global +// CHECK: @_ZTHN7PR4211112_GLOBAL__N_11nILi0EEE = internal alias {{.*}} @[[PR42111_CTOR:.*]] + // CHECK: call {{.*}}@_Z8init_arrv + +// Ensure that we use guarded initialization for an instantiated thread_local +// variable with internal linkage. +namespace PR42111 { + int f(); + namespace { template <int = 0> thread_local int n = f(); } + // CHECK: define {{.*}}@[[PR42111_CTOR]]( + // CHECK: load {{.*}} @_ZGVN7PR4211112_GLOBAL__N_11nILi0EEE + // CHECK: icmp eq i8 {{.*}}, 0 + // CHECK: br i1 + // CHECK: call i32 @_ZN7PR421111fEv( + // CHECK: store i32 {{.*}}, i32* @_ZN7PR4211112_GLOBAL__N_11nILi0EEE + // CHECK: store i8 1, i8* @_ZGVN7PR4211112_GLOBAL__N_11nILi0EEE + int g() { return n<> + n<>; } +} |
