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Handle aliases to tls variables in all architectures, not just x86.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159058 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2012-06-23 00:30:03 +00:00
parent fc47253294
commit ce0a5cda8a
3 changed files with 21 additions and 8 deletions
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14
lib/Target/TargetMachine.cpp
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@ -11,7 +11,9 @@
//
//===----------------------------------------------------------------------===//
#include "llvm/GlobalAlias.h"
#include "llvm/GlobalValue.h"
#include "llvm/GlobalVariable.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCCodeGenInfo.h"
#include "llvm/Target/TargetMachine.h"
@ -76,11 +78,17 @@ CodeModel::Model TargetMachine::getCodeModel() const {
}
TLSModel::Model TargetMachine::getTLSModel(const GlobalValue *GV) const {
bool isLocal = GV->hasLocalLinkage();
bool isDeclaration = GV->isDeclaration();
// If GV is an alias then use the aliasee for determining
// thread-localness.
if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
GV = GA->resolveAliasedGlobal(false);
const GlobalVariable *Var = cast<GlobalVariable>(GV);
bool isLocal = Var->hasLocalLinkage();
bool isDeclaration = Var->isDeclaration();
// FIXME: what should we do for protected and internal visibility?
// For variables, is internal different from hidden?
bool isHidden = GV->hasHiddenVisibility();
bool isHidden = Var->hasHiddenVisibility();
if (getRelocationModel() == Reloc::PIC_ &&
!Options.PositionIndependentExecutable) {

5
lib/Target/X86/X86ISelLowering.cpp
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@ -7419,11 +7419,6 @@ X86TargetLowering::LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const {
const GlobalValue *GV = GA->getGlobal();
if (Subtarget->isTargetELF()) {
// If GV is an alias then use the aliasee for determining
// thread-localness.
if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
GV = GA->resolveAliasedGlobal(false);
TLSModel::Model model = getTargetMachine().getTLSModel(GV);
switch (model) {

10
test/CodeGen/Mips/tls-alias.ll Normal file
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@ -0,0 +1,10 @@
; RUN: llc -march=mipsel -relocation-model=pic < %s | FileCheck %s
@foo = thread_local global i32 42
@bar = hidden alias i32* @foo
define i32* @zed() {
; CHECK: __tls_get_addr
; CHECK-NEXT: %tlsgd(bar)
ret i32* @bar
}