[TableGen] Replace some calls to ListInit::getSize() with ListInit::empty() if it was just comparing to 0. NFC.

llvm-svn: 237340
diff --git a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
index f03ef61..fd02bbd 100644
--- a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -3076,7 +3076,7 @@
     // null_frag operator is as-if no pattern were specified. Normally this
     // is from a multiclass expansion w/ a SDPatternOperator passed in as
     // null_frag.
-    if (!LI || LI->getSize() == 0 || hasNullFragReference(LI)) {
+    if (!LI || LI->empty() || hasNullFragReference(LI)) {
       std::vector<Record*> Results;
       std::vector<Record*> Operands;
 
@@ -3399,7 +3399,7 @@
     Pattern->InlinePatternFragments();
 
     ListInit *LI = CurPattern->getValueAsListInit("ResultInstrs");
-    if (LI->getSize() == 0) continue;  // no pattern.
+    if (LI->empty()) continue;  // no pattern.
 
     // Parse the instruction.
     TreePattern Result(CurPattern, LI, false, *this);
diff --git a/llvm/utils/TableGen/CodeGenMapTable.cpp b/llvm/utils/TableGen/CodeGenMapTable.cpp
index 8abea48..b52a91d 100644
--- a/llvm/utils/TableGen/CodeGenMapTable.cpp
+++ b/llvm/utils/TableGen/CodeGenMapTable.cpp
@@ -128,7 +128,7 @@
     ListInit *ColValList = MapRec->getValueAsListInit("ValueCols");
 
     // Each instruction map must specify at least one column for it to be valid.
-    if (ColValList->getSize() == 0)
+    if (ColValList->empty())
       PrintFatalError(MapRec->getLoc(), "InstrMapping record `" +
         MapRec->getName() + "' has empty " + "`ValueCols' field!");