mi-sched: register pressure update tracing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190178 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineScheduler.cpp b/lib/CodeGen/MachineScheduler.cpp
index 7d957b5..2a5881e 100644
--- a/lib/CodeGen/MachineScheduler.cpp
+++ b/lib/CodeGen/MachineScheduler.cpp
@@ -577,8 +577,10 @@
for (unsigned LUIdx = 0, LUEnd = LiveUses.size(); LUIdx != LUEnd; ++LUIdx) {
/// FIXME: Currently assuming single-use physregs.
unsigned Reg = LiveUses[LUIdx];
+ DEBUG(dbgs() << " LiveReg: " << PrintVRegOrUnit(Reg, TRI) << "\n");
if (!TRI->isVirtualRegister(Reg))
continue;
+
// This may be called before CurrentBottom has been initialized. However,
// BotRPTracker must have a valid position. We want the value live into the
// instruction or live out of the block, so ask for the previous
@@ -598,6 +600,8 @@
for (VReg2UseMap::iterator
UI = VRegUses.find(Reg); UI != VRegUses.end(); ++UI) {
SUnit *SU = UI->SU;
+ DEBUG(dbgs() << " UpdateRegP: SU(" << SU->NodeNum << ") "
+ << *SU->getInstr());
// If this use comes before the reaching def, it cannot be a last use, so
// descrease its pressure change.
if (!SU->isScheduled && SU != &ExitSU) {