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| author | Jim Grosbach <grosbach@apple.com> | 2010-09-22 23:27:36 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-09-22 23:27:36 +0000 |
| commit | 85dcd3d0f4e9294d064bebc34224af93ab6ead5b (patch) | |
| tree | e363b66aa9d4eef224d81690eaf0e07a88459847 /llvm/lib/Target/ARM/ARMISelLowering.cpp | |
| parent | 98d500b0241ca1ccb6746a5264bb071923f5b0c7 (diff) | |
| download | bcm5719-llvm-85dcd3d0f4e9294d064bebc34224af93ab6ead5b.tar.gz bcm5719-llvm-85dcd3d0f4e9294d064bebc34224af93ab6ead5b.zip | |
Add support for ELF PLT references for ARM MC asm printing. Adding a
new VariantKind to the MCSymbolExpr seems like overkill, but I'm not sure
there's a more straightforward way to get the printing difference captured.
(i.e., x86 uses @PLT, ARM uses (PLT)).
llvm-svn: 114613
Diffstat (limited to 'llvm/lib/Target/ARM/ARMISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMISelLowering.cpp | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp index dc68d3980f6..ae1fead462d 100644 --- a/llvm/lib/Target/ARM/ARMISelLowering.cpp +++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp @@ -1195,8 +1195,14 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee, SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32); Callee = DAG.getNode(ARMISD::PIC_ADD, dl, getPointerTy(), Callee, PICLabel); - } else - Callee = DAG.getTargetGlobalAddress(GV, dl, getPointerTy()); + } else { + // On ELF targets for PIC code, direct calls should go through the PLT + unsigned OpFlags = 0; + if (Subtarget->isTargetELF() && + getTargetMachine().getRelocationModel() == Reloc::PIC_) + OpFlags = ARMII::MO_PLT; + Callee = DAG.getTargetGlobalAddress(GV, dl, getPointerTy(), 0, OpFlags); + } } else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) { isDirect = true; bool isStub = Subtarget->isTargetDarwin() && @@ -1217,8 +1223,14 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee, SDValue PICLabel = DAG.getConstant(ARMPCLabelIndex, MVT::i32); Callee = DAG.getNode(ARMISD::PIC_ADD, dl, getPointerTy(), Callee, PICLabel); - } else - Callee = DAG.getTargetExternalSymbol(Sym, getPointerTy()); + } else { + unsigned OpFlags = 0; + // On ELF targets for PIC code, direct calls should go through the PLT + if (Subtarget->isTargetELF() && + getTargetMachine().getRelocationModel() == Reloc::PIC_) + OpFlags = ARMII::MO_PLT; + Callee = DAG.getTargetExternalSymbol(Sym, getPointerTy(), OpFlags); + } } // FIXME: handle tail calls differently. |
