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Don't try to use copy relocations with tls variables. 

Should fix the lldb bot.

llvm-svn: 324539
This commit is contained in:
Rafael Espindola 2018-02-07 23:04:06 +00:00
parent 37765ff326
commit 75e5736926
2 changed files with 24 additions and 3 deletions
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7
clang/lib/CodeGen/CodeGenModule.cpp
View File

@ -746,9 +746,10 @@ static bool shouldAssumeDSOLocal(const CodeGenModule &CGM,
return false;
// If we can use copy relocations we can assume it is local.
if (isa<VarDecl>(D) &&
(RM == llvm::Reloc::Static || CGOpts.PIECopyRelocations))
return true;
if (auto *VD = dyn_cast<VarDecl>(D))
if (VD->getTLSKind() == VarDecl::TLS_None &&
(RM == llvm::Reloc::Static || CGOpts.PIECopyRelocations))
return true;
// If we can use a plt entry as the symbol address we can assume it
// is local.

20
clang/test/CodeGen/dso-local-executable.c
View File

@ -4,6 +4,8 @@
// STATIC-DAG: declare dso_local void @foo()
// STATIC-DAG: @baz = dso_local global i32 42
// STATIC-DAG: define dso_local i32* @zed()
// STATIC-DAG: @thread_var = external thread_local global i32
// STATIC-DAG: @local_thread_var = dso_local thread_local global i32 42
// RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm -pic-is-pie -mpie-copy-relocations %s -o - | FileCheck --check-prefix=PIE-COPY %s
// PIE-COPY-DAG: @bar = external dso_local global i32
@ -11,6 +13,8 @@
// PIE-COPY-DAG: declare void @foo()
// PIE-COPY-DAG: @baz = dso_local global i32 42
// PIE-COPY-DAG: define dso_local i32* @zed()
// PIE-COPY-DAG: @thread_var = external thread_local global i32
// PIE-COPY-DAG: @local_thread_var = dso_local thread_local global i32 42
// RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm -pic-is-pie %s -o - | FileCheck --check-prefix=PIE %s
// PIE-DAG: @bar = external global i32
@ -18,6 +22,8 @@
// PIE-DAG: declare void @foo()
// PIE-DAG: @baz = dso_local global i32 42
// PIE-DAG: define dso_local i32* @zed()
// PIE-DAG: @thread_var = external thread_local global i32
// PIE-DAG: @local_thread_var = dso_local thread_local global i32 42
// RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm -mrelocation-model static -fno-plt %s -o - | FileCheck --check-prefix=NOPLT %s
// NOPLT-DAG: @bar = external dso_local global i32
@ -25,6 +31,8 @@
// NOPLT-DAG: declare void @foo()
// NOPLT-DAG: @baz = dso_local global i32 42
// NOPLT-DAG: define dso_local i32* @zed()
// NOPLT-DAG: @thread_var = external thread_local global i32
// NOPLT-DAG: @local_thread_var = dso_local thread_local global i32 42
// RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm -fno-plt -pic-is-pie -mpie-copy-relocations %s -o - | FileCheck --check-prefix=PIE-COPY-NOPLT %s
// PIE-COPY-NOPLT-DAG: @bar = external dso_local global i32
@ -32,6 +40,8 @@
// PIE-COPY-NOPLT-DAG: declare void @foo()
// PIE-COPY-NOPLT-DAG: @baz = dso_local global i32 42
// PIE-COPY-NOPLT-DAG: define dso_local i32* @zed()
// PIE-COPY-NOPLT-DAG: @thread_var = external thread_local global i32
// PIE-COPY-NOPLT-DAG: @local_thread_var = dso_local thread_local global i32 42
// RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm -pic-is-pie -fno-plt %s -o - | FileCheck --check-prefix=PIE-NO-PLT %s
// RUN: %clang_cc1 -triple powerpc64le-pc-linux -emit-llvm -mrelocation-model static %s -o - | FileCheck --check-prefix=PIE-NO-PLT %s
@ -40,6 +50,8 @@
// PIE-NO-PLT-DAG: declare void @foo()
// PIE-NO-PLT-DAG: @baz = dso_local global i32 42
// PIE-NO-PLT-DAG: define dso_local i32* @zed()
// PIE-NO-PLT-DAG: @thread_var = external thread_local global i32
// PIE-NO-PLT-DAG: @local_thread_var = dso_local thread_local global i32 42
// RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm %s -o - | FileCheck --check-prefix=SHARED %s
// SHARED-DAG: @bar = external global i32
@ -47,6 +59,8 @@
// SHARED-DAG: declare void @foo()
// SHARED-DAG: @baz = global i32 42
// SHARED-DAG: define i32* @zed()
// SHARED-DAG: @thread_var = external thread_local global i32
// SHARED-DAG: @local_thread_var = thread_local global i32 42
extern int bar;
__attribute__((weak)) extern int weak_bar;
@ -57,3 +71,9 @@ int *zed() {
foo();
return baz ? &weak_bar : &bar;
}
extern __thread int thread_var;
__thread int local_thread_var = 42;
int *get_thread_var(int a) {
return a ? &thread_var : &local_thread_var;
}