diff options
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index 1df07071f8e..d7dc35cf6eb 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -4280,23 +4280,28 @@ PrepareCall(SelectionDAG &DAG, SDValue &Callee, SDValue &InFlag, SDValue &Chain, needIndirectCall = false; } + // PC-relative references to external symbols should go through $stub, unless + // we're building with the leopard linker or later, which automatically + // synthesizes these stubs. + Reloc::Model RM = DAG.getTarget().getRelocationModel(); + const Triple &TargetTriple = Subtarget.getTargetTriple(); + bool OldMachOLinker = + TargetTriple.isMacOSX() && TargetTriple.isMacOSXVersionLT(10, 5); + const Module *Mod = DAG.getMachineFunction().getFunction()->getParent(); + const GlobalValue *GV = nullptr; + if (auto *G = dyn_cast<GlobalAddressSDNode>(Callee)) + GV = G->getGlobal(); + bool Local = shouldAssumeDSOLocal(RM, TargetTriple, *Mod, GV); + bool UsePlt = + !Local && (OldMachOLinker || (Subtarget.isTargetELF() && !isPPC64)); + if (isFunctionGlobalAddress(Callee)) { GlobalAddressSDNode *G = cast<GlobalAddressSDNode>(Callee); // A call to a TLS address is actually an indirect call to a // thread-specific pointer. unsigned OpFlags = 0; - Reloc::Model RM = DAG.getTarget().getRelocationModel(); - const Triple &TargetTriple = Subtarget.getTargetTriple(); - const GlobalValue *GV = G->getGlobal(); - bool OldMachOLinker = - TargetTriple.isMacOSX() && TargetTriple.isMacOSXVersionLT(10, 5); - if (!shouldAssumeDSOLocal(RM, TargetTriple, *GV->getParent(), GV) && - (OldMachOLinker || (Subtarget.isTargetELF() && !isPPC64))) { - // PC-relative references to external symbols should go through $stub, - // unless we're building with the leopard linker or later, which - // automatically synthesizes these stubs. + if (UsePlt) OpFlags = PPCII::MO_PLT_OR_STUB; - } // If the callee is a GlobalAddress/ExternalSymbol node (quite common, // every direct call is) turn it into a TargetGlobalAddress / @@ -4309,16 +4314,8 @@ PrepareCall(SelectionDAG &DAG, SDValue &Callee, SDValue &InFlag, SDValue &Chain, if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) { unsigned char OpFlags = 0; - if ((DAG.getTarget().getRelocationModel() != Reloc::Static && - (Subtarget.getTargetTriple().isMacOSX() && - Subtarget.getTargetTriple().isMacOSXVersionLT(10, 5))) || - (Subtarget.isTargetELF() && !isPPC64 && - DAG.getTarget().getRelocationModel() == Reloc::PIC_)) { - // PC-relative references to external symbols should go through $stub, - // unless we're building with the leopard linker or later, which - // automatically synthesizes these stubs. + if (UsePlt) OpFlags = PPCII::MO_PLT_OR_STUB; - } Callee = DAG.getTargetExternalSymbol(S->getSymbol(), Callee.getValueType(), OpFlags); |
