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[CodeGen] Treat auto-generated __dso_handle symbol as HiddenVisibility 

Fixes https://bugs.llvm.org/show_bug.cgi?id=31932

Based on a patch by Roland McGrath

Reviewed By: phosek

Differential Revision: https://reviews.llvm.org/D29843

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@294978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner 2017-02-13 18:49:21 +00:00
parent 186d5807d8
commit ff18d06e36
3 changed files with 5 additions and 3 deletions
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4
lib/CodeGen/ItaniumCXXABI.cpp
View File

@ -2162,7 +2162,9 @@ static void emitGlobalDtorWithCXAAtExit(CodeGenFunction &CGF,
// Create a variable that binds the atexit to this shared object.
llvm::Constant *handle =
CGF.CGM.CreateRuntimeVariable(CGF.Int8Ty, "__dso_handle");
CGF.CGM.CreateRuntimeVariable(CGF.Int8Ty, "__dso_handle");
auto *GV = cast<llvm::GlobalValue>(handle->stripPointerCasts());
GV->setVisibility(llvm::GlobalValue::HiddenVisibility);
llvm::Value *args[] = {
llvm::ConstantExpr::getBitCast(dtor, dtorTy),

2
test/CodeGenCXX/global-init.cpp
View File

@ -15,7 +15,7 @@ struct C { void *field; };
struct D { ~D(); };
// CHECK: @__dso_handle = external global i8
// CHECK: @__dso_handle = external hidden global i8
// CHECK: @c = global %struct.C zeroinitializer, align 8
// PR6205: The casts should not require global initializers

2
test/OpenMP/threadprivate_codegen.cpp
View File

@ -176,7 +176,7 @@ struct S5 {
// CHECK-TLS-DAG: [[ST_S4_ST:@.+]] = linkonce_odr thread_local global %struct.S4 zeroinitializer
// CHECK-TLS-DAG: [[ST_S4_ST_GUARD:@_ZGVN2STI2S4E2stE]] = linkonce_odr thread_local global i64 0
// CHECK-TLS-DAG: @__tls_guard = internal thread_local global i8 0
// CHECK-TLS-DAG: @__dso_handle = external global i8
// CHECK-TLS-DAG: @__dso_handle = external hidden global i8
// CHECK-TLS-DAG: [[GS1_TLS_INIT:@_ZTHL3gs1]] = internal alias void (), void ()* @__tls_init
// CHECK-TLS-DAG: [[ARR_X_TLS_INIT:@_ZTH5arr_x]] = alias void (), void ()* @__tls_init