[tablegen] Use hasPredCode()/hasImmCode() instead of getPredCode().empty()/getImmCode...

These are cheaper ways of testing for the presence of code than generating the C++ code and testing it's empty.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315872 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index f6ef35a..f6be8da 100644 (file)
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -807,8 +807,14 @@ TypeSetByHwMode TypeInfer::getLegalTypes() {
 
 /// TreePredicateFn constructor.  Here 'N' is a subclass of PatFrag.
 TreePredicateFn::TreePredicateFn(TreePattern *N) : PatFragRec(N) {
-  assert((getPredCode().empty() || getImmCode().empty()) &&
-        ".td file corrupt: can't have a node predicate *and* an imm predicate");
+  assert(
+      (!hasPredCode() || !hasImmCode()) &&
+      ".td file corrupt: can't have a node predicate *and* an imm predicate");
+}
+
+bool TreePredicateFn::hasPredCode() const {
+  return isLoad() || isStore() ||
+         !PatFragRec->getRecord()->getValueAsString("PredicateCode").empty();
 }
 
 std::string TreePredicateFn::getPredCode() const {
@@ -933,6 +939,10 @@ std::string TreePredicateFn::getPredCode() const {
   return Code;
 }
 
+bool TreePredicateFn::hasImmCode() const {
+  return !PatFragRec->getRecord()->getValueAsString("ImmediateCode").empty();
+}
+
 std::string TreePredicateFn::getImmCode() const {
   return PatFragRec->getRecord()->getValueAsString("ImmediateCode");
 }
@@ -1015,7 +1025,7 @@ StringRef TreePredicateFn::getImmTypeIdentifier() const {
 
 /// isAlwaysTrue - Return true if this is a noop predicate.
 bool TreePredicateFn::isAlwaysTrue() const {
-  return getPredCode().empty() && getImmCode().empty();
+  return !hasPredCode() && !hasImmCode();
 }
 
 /// Return the name to use in the generated code to reference this, this is
@@ -1085,7 +1095,7 @@ std::string TreePredicateFn::getCodeToRunOnSDNode() const {
   }
 
   // Handle arbitrary node predicates.
-  assert(!getPredCode().empty() && "Don't have any predicate code!");
+  assert(hasPredCode() && "Don't have any predicate code!");
   StringRef ClassName;
   if (PatFragRec->getOnlyTree()->isLeaf())
     ClassName = "SDNode";

diff --git a/utils/TableGen/CodeGenDAGPatterns.h b/utils/TableGen/CodeGenDAGPatterns.h
index 5b047bc..1f7e9fb 100644 (file)
--- a/utils/TableGen/CodeGenDAGPatterns.h
+++ b/utils/TableGen/CodeGenDAGPatterns.h
@@ -447,7 +447,7 @@ public:
   /// isAlwaysTrue - Return true if this is a noop predicate.
   bool isAlwaysTrue() const;
 
-  bool isImmediatePattern() const { return !getImmCode().empty(); }
+  bool isImmediatePattern() const { return hasImmCode(); }
 
   /// getImmediatePredicateCode - Return the code that evaluates this pattern if
   /// this is an immediate predicate.  It is an error to call this on a
@@ -511,6 +511,8 @@ public:
   Record *getScalarMemoryVT() const;
 
 private:
+  bool hasPredCode() const;
+  bool hasImmCode() const;
   std::string getPredCode() const;
   std::string getImmCode() const;
   bool immCodeUsesAPInt() const;