[llvm-commits] [llvm] r43211 - /llvm/trunk/lib/CodeGen/VirtRegMap.cpp
Evan Cheng
evan.cheng at apple.com
Sun Oct 21 20:01:44 PDT 2007
Author: evancheng
Date: Sun Oct 21 22:01:44 2007
New Revision: 43211
URL: http://llvm.org/viewvc/llvm-project?rev=43211&view=rev
Log:
- Only perform the unfolding optimization when the folding in question is modref.
- Remove a bogus assertion.
Modified:
llvm/trunk/lib/CodeGen/VirtRegMap.cpp
Modified: llvm/trunk/lib/CodeGen/VirtRegMap.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/VirtRegMap.cpp?rev=43211&r1=43210&r2=43211&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/VirtRegMap.cpp (original)
+++ llvm/trunk/lib/CodeGen/VirtRegMap.cpp Sun Oct 21 22:01:44 2007
@@ -821,11 +821,8 @@
unsigned Idx = NewMI->findRegisterUseOperandIdx(VirtReg);
MachineInstr *FoldedMI = MRI->foldMemoryOperand(NewMI, Idx, SS);
if (FoldedMI) {
- if (VRM.hasPhys(UnfoldVR))
- assert(VRM.getPhys(UnfoldVR) == UnfoldPR);
- else
+ if (!VRM.hasPhys(UnfoldVR))
VRM.assignVirt2Phys(UnfoldVR, UnfoldPR);
-
VRM.virtFolded(VirtReg, FoldedMI, VirtRegMap::isRef);
MII = MBB.insert(MII, FoldedMI);
VRM.RemoveFromFoldedVirtMap(&MI);
@@ -1190,7 +1187,7 @@
if (DeadStore) {
bool isDead = !(MR & VirtRegMap::isRef);
MachineInstr *NewStore = NULL;
- if (MR & VirtRegMap::isMod) {
+ if (MR & VirtRegMap::isModRef) {
unsigned PhysReg = Spills.getSpillSlotOrReMatPhysReg(SS);
SmallVector<MachineInstr*, 4> NewMIs;
if (PhysReg &&
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