[llvm] r284604 - TMP
Tim Northover via llvm-commits
llvm-commits at lists.llvm.org
Wed Oct 19 08:55:09 PDT 2016
Author: tnorthover
Date: Wed Oct 19 10:55:09 2016
New Revision: 284604
URL: http://llvm.org/viewvc/llvm-project?rev=284604&view=rev
Log:
TMP
Modified:
llvm/trunk/include/llvm/CodeGen/GlobalISel/IRTranslator.h
llvm/trunk/lib/CodeGen/GlobalISel/IRTranslator.cpp
Modified: llvm/trunk/include/llvm/CodeGen/GlobalISel/IRTranslator.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/GlobalISel/IRTranslator.h?rev=284604&r1=284603&r2=284604&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/GlobalISel/IRTranslator.h (original)
+++ llvm/trunk/include/llvm/CodeGen/GlobalISel/IRTranslator.h Wed Oct 19 10:55:09 2016
@@ -120,6 +120,8 @@ private:
bool translateMemcpy(const CallInst &CI);
+ void getStackGuard(unsigned DstReg);
+
bool translateKnownIntrinsic(const CallInst &CI, Intrinsic::ID ID);
/// Translate call instruction.
Modified: llvm/trunk/lib/CodeGen/GlobalISel/IRTranslator.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/GlobalISel/IRTranslator.cpp?rev=284604&r1=284603&r2=284604&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/GlobalISel/IRTranslator.cpp (original)
+++ llvm/trunk/lib/CodeGen/GlobalISel/IRTranslator.cpp Wed Oct 19 10:55:09 2016
@@ -382,6 +382,26 @@ bool IRTranslator::translateMemcpy(const
CallLowering::ArgInfo(0, CI.getType()), Args);
}
+void IRTranslator::getStackGuard(unsigned DstReg) {
+ auto MIB = MIRBuilder.buildInstr(TargetOpcode::LOAD_STACK_GUARD);
+ MIB.addDef(DstReg);
+
+ auto &MF = MIRBuilder.getMF();
+ auto &TLI = *MF.getSubtarget().getTargetLowering();
+ Value *Global = TLI.getSDagStackGuard(*MF.getFunction()->getParent());
+ if (!Global)
+ return;
+
+ MachinePointerInfo MPInfo(Global);
+ MachineInstr::mmo_iterator MemRefs = MF.allocateMemRefsArray(1);
+ auto Flags = MachineMemOperand::MOLoad | MachineMemOperand::MOInvariant |
+ MachineMemOperand::MODereferenceable;
+ *MemRefs =
+ MF.getMachineMemOperand(MPInfo, Flags, DL->getPointerSizeInBits() / 8,
+ DL->getPointerABIAlignment() / 8);
+ MIB.setMemRefs(MemRefs, MemRefs + 1);
+}
+
bool IRTranslator::translateKnownIntrinsic(const CallInst &CI,
Intrinsic::ID ID) {
unsigned Op = 0;
@@ -402,6 +422,19 @@ bool IRTranslator::translateKnownIntrins
MIRBuilder.buildConstant(getOrCreateVReg(CI), Min->isZero() ? -1ULL : 0);
return true;
}
+ case Intrinsic::stackguard:
+ getStackGuard(getOrCreateVReg(CI));
+ return true;
+ case Intrinsic::stackprotector: {
+ // LLT PtrTy{*CI.getArgOperand(0).getType(), *DL};
+ // unsigned GuardVal = MRI->createGenericVirtualRegister(PtrTy);
+ // getStackGuard(GuardVal);
+
+ // AllocaInst *Slot = cast<AllocaInst>(I.getArgOperand(1));
+ // unsigned StackSlot = MIRBuilder.buildFrameIndex(FrameReg, FI);
+ // MIRBuilder.buildStore(GuardVal, StackSlot);
+ return true;
+ }
}
LLT Ty{*CI.getOperand(0)->getType(), *DL};
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