Fix ARM FastISel PIC function call.
The function call to external function should come with PLT relocation
type if the PIC relocation model is used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189002 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index f4aaf09..628b514 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -2460,15 +2460,22 @@
MachineInstrBuilder MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt,
DL, TII.get(CallOpc));
+ unsigned char OpFlags = 0;
+
+ // Add MO_PLT for global address or external symbol in the PIC relocation
+ // model.
+ if (Subtarget->isTargetELF() && TM.getRelocationModel() == Reloc::PIC_)
+ OpFlags = ARMII::MO_PLT;
+
// ARM calls don't take a predicate, but tBL / tBLX do.
if(isThumb2)
AddDefaultPred(MIB);
if (UseReg)
MIB.addReg(CalleeReg);
else if (!IntrMemName)
- MIB.addGlobalAddress(GV, 0, 0);
+ MIB.addGlobalAddress(GV, 0, OpFlags);
else
- MIB.addExternalSymbol(IntrMemName, 0);
+ MIB.addExternalSymbol(IntrMemName, OpFlags);
// Add implicit physical register uses to the call.
for (unsigned i = 0, e = RegArgs.size(); i != e; ++i)