Add IMPLICIT_DEF of LR for branch-and-link instrs (calls and global accesses)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15270 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPC32ISelSimple.cpp b/lib/Target/PowerPC/PPC32ISelSimple.cpp
index ae7cf3e..2785261 100644
--- a/lib/Target/PowerPC/PPC32ISelSimple.cpp
+++ b/lib/Target/PowerPC/PPC32ISelSimple.cpp
@@ -522,6 +522,7 @@
MachineBasicBlock &FirstMBB = F->front();
MachineBasicBlock::iterator MBBI = FirstMBB.begin();
GlobalBaseReg = makeAnotherReg(Type::IntTy);
+ BuildMI(FirstMBB, MBBI, PPC32::IMPLICIT_DEF, 0, PPC32::LR);
BuildMI(FirstMBB, MBBI, PPC32::MovePCtoLR, 0, GlobalBaseReg);
GlobalBaseInitialized = true;
}
@@ -1576,6 +1577,7 @@
BuildMI(BB, PPC32::ADJCALLSTACKDOWN, 1).addSImm(0);
}
+ BuildMI(BB, PPC32::IMPLICIT_DEF, 0, PPC32::LR);
BB->push_back(CallMI);
BuildMI(BB, PPC32::ADJCALLSTACKUP, 1).addSImm(NumBytes);