Added support for register allocators to record which intervals are spill intervals, and where the uses and defs of the original intervals were in the original code.
Spill intervals can be hidden using the "-rmf-intervals=virt-nospills*" option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112811 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index c6fdf04..61f337b 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -140,6 +140,7 @@
const TargetInstrInfo *tii;
const MachineLoopInfo *loopInfo;
MachineRegisterInfo *mri;
+ RenderMachineFunction *rmf;
LiveIntervals *lis;
LiveStacks *lss;
@@ -761,9 +762,11 @@
const LiveInterval *spillInterval = node2LI[node];
double oldSpillWeight = spillInterval->weight;
SmallVector<LiveInterval*, 8> spillIs;
+ rmf->rememberUseDefs(spillInterval);
std::vector<LiveInterval*> newSpills =
lis->addIntervalsForSpills(*spillInterval, spillIs, loopInfo, *vrm);
addStackInterval(spillInterval, mri);
+ rmf->rememberSpills(spillInterval, newSpills);
(void) oldSpillWeight;
DEBUG(dbgs() << "VREG " << virtReg << " -> SPILLED (Cost: "
@@ -871,7 +874,7 @@
lis = &getAnalysis<LiveIntervals>();
lss = &getAnalysis<LiveStacks>();
loopInfo = &getAnalysis<MachineLoopInfo>();
- RenderMachineFunction *rmf = &getAnalysis<RenderMachineFunction>();
+ rmf = &getAnalysis<RenderMachineFunction>();
vrm = &getAnalysis<VirtRegMap>();