Support for emitting inline stack probes

[oota-llvm.git] / lib / CodeGen / RegisterPressure.cpp

diff --git a/lib/CodeGen/RegisterPressure.cpp b/lib/CodeGen/RegisterPressure.cpp
index ba0a9158b46c192bfa56ae2d1a630cc7b709199d..6ff16e551be2d6c24c0910f536cf24d82ec3c14d 100644 (file)
--- a/lib/CodeGen/RegisterPressure.cpp
+++ b/lib/CodeGen/RegisterPressure.cpp
@@ -78,11 +78,13 @@ void RegPressureTracker::dump() const {
 }
 
 void PressureDiff::dump(const TargetRegisterInfo &TRI) const {
+  const char *sep = "";
   for (const PressureChange &Change : *this) {
     if (!Change.isValid())
       break;
-    dbgs() << "    " << TRI.getRegPressureSetName(Change.getPSet())
+    dbgs() << sep << TRI.getRegPressureSetName(Change.getPSet())
            << " " << Change.getUnitInc();
+    sep = "    ";
   }
   dbgs() << '\n';
 }
@@ -860,7 +862,8 @@ getUpwardPressureDelta(const MachineInstr *MI, /*const*/ PressureDiff &PDiff,
     unsigned MNew = MOld;
     // Ignore DeadDefs here because they aren't captured by PressureChange.
     unsigned PNew = POld + PDiffI->getUnitInc();
-    assert((PDiffI->getUnitInc() >= 0) == (PNew >= POld) && "PSet overflow");
+    assert((PDiffI->getUnitInc() >= 0) == (PNew >= POld)
+           && "PSet overflow/underflow");
     if (PNew > MOld)
       MNew = PNew;
     // Check if current pressure has exceeded the limit.