Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether
the stored register is killed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44600 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 58fc40b..6c04439 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -208,7 +208,8 @@
}
if (MO.isDef()) {
- MRI.storeRegToStackSlot(MBB, next(MII), PhysReg, StackSlot, RC);
+ MRI.storeRegToStackSlot(MBB, next(MII), PhysReg, true,
+ StackSlot, RC);
++NumStores;
}
}
@@ -861,7 +862,7 @@
BitVector &RegKills,
std::vector<MachineOperand*> &KillOps,
VirtRegMap &VRM) {
- MRI->storeRegToStackSlot(MBB, next(MII), PhysReg, StackSlot, RC);
+ MRI->storeRegToStackSlot(MBB, next(MII), PhysReg, true, StackSlot, RC);
DOUT << "Store:\t" << *next(MII);
// If there is a dead store to this stack slot, nuke it now.
@@ -984,9 +985,10 @@
const TargetRegisterClass *RC = RegMap->getRegClass(VirtReg);
unsigned Phys = VRM.getPhys(VirtReg);
int StackSlot = VRM.getStackSlot(VirtReg);
- MRI->storeRegToStackSlot(MBB, next(MII), Phys, StackSlot, RC);
- DOUT << "Store:\t" << *next(MII);
- VRM.virtFolded(VirtReg, next(MII), VirtRegMap::isMod);
+ MRI->storeRegToStackSlot(MBB, next(MII), Phys, false, StackSlot, RC);
+ MachineInstr *StoreMI = next(MII);
+ DOUT << "Store:\t" << StoreMI;
+ VRM.virtFolded(VirtReg, StoreMI, VirtRegMap::isMod);
}
NextMII = next(MII);
}
@@ -1011,12 +1013,6 @@
assert(MRegisterInfo::isVirtualRegister(VirtReg) &&
"Not a virtual or a physical register?");
- // Assumes this is the last use of a split interval. IsKill will be unset
- // if reg is use later unless it's a two-address operand.
- if (MO.isUse() && VRM.getPreSplitReg(VirtReg) &&
- TID->getOperandConstraint(i, TOI::TIED_TO) == -1)
- MI.getOperand(i).setIsKill();
-
unsigned SubIdx = MO.getSubReg();
if (VRM.isAssignedReg(VirtReg)) {
// This virtual register was assigned a physreg!