improve "cannot yet select" errors a trivial amount: now

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

diff --git a/lib/CodeGen/SlotIndexes.cpp b/lib/CodeGen/SlotIndexes.cpp
index 4d362d55a4cd69ff01826c7e3fb0657f8298b1a6..277cce3db880f0621ed25f70677fc790ba792c13 100644 (file)
--- a/lib/CodeGen/SlotIndexes.cpp
+++ b/lib/CodeGen/SlotIndexes.cpp
@@ -41,7 +41,7 @@ namespace {
 
 char SlotIndexes::ID = 0;
 INITIALIZE_PASS(SlotIndexes, "slotindexes",
-                "Slot index numbering", false, false);
+                "Slot index numbering", false, false)
 
 IndexListEntry* IndexListEntry::getEmptyKeyEntry() {
   return &*IndexListEntryEmptyKey;
@@ -127,8 +127,12 @@ bool SlotIndexes::runOnMachineFunction(MachineFunction &fn) {
       index += (Slots + 1) * SlotIndex::NUM;
     }
 
-    // One blank instruction at the end.
-    push_back(createEntry(0, index));    
+    // We insert two blank instructions between basic blocks.
+    // One to represent live-out registers and one to represent live-ins.
+    push_back(createEntry(0, index));
+    index += SlotIndex::NUM;
+
+    push_back(createEntry(0, index));
 
     SlotIndex blockEndIndex(back(), SlotIndex::LOAD);
     mbb2IdxMap.insert(
@@ -199,11 +203,7 @@ void SlotIndexes::dump() const {
 
 // Print a SlotIndex to a raw_ostream.
 void SlotIndex::print(raw_ostream &os) const {
-  os << entry().getIndex();
-  if (isPHI())
-    os << "*";
-  else
-    os << "LudS"[getSlot()];
+  os << entry().getIndex() << "LudS"[getSlot()];
 }
 
 // Dump a SlotIndex to stderr.