MachineInstr: Inline the fast path (non-bundle instruction) of hasProperty.

This is particularly helpful as both arguments tend to be constants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152991 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 14 insertions, 7 deletions

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index 5cb6fa2..65093d7 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -308,7 +308,14 @@ public:
   /// The first argument is the property being queried.
   /// The second argument indicates whether the query should look inside
   /// instruction bundles.
-  bool hasProperty(unsigned Flag, QueryType Type = AnyInBundle) const;
+  bool hasProperty(unsigned MCFlag, QueryType Type = AnyInBundle) const {
+    // Inline the fast path.
+    if (Type == IgnoreBundle || !isBundle())
+      return getDesc().getFlags() & (1 << MCFlag);
+
+    // If we have a bundle, take the slow path.
+    return hasPropertyInBundle(1 << MCFlag, Type);
+  }
 
   /// isVariadic - Return true if this instruction can have a variable number of
   /// operands.  In this case, the variable operands will be after the normal
@@ -911,6 +918,10 @@ private:
   /// this instruction from their respective use lists.  This requires that the
   /// operands not be on their use lists yet.
   void AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo);
+
+  /// hasPropertyInBundle - Slow path for hasProperty when we're dealing with a
+  /// bundle.
+  bool hasPropertyInBundle(unsigned Mask, QueryType Type) const;
 };
 
 /// MachineInstrExpressionTrait - Special DenseMapInfo traits to compare
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 0397ff5..43af1ad 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -751,15 +751,11 @@ void MachineInstr::addMemOperand(MachineFunction &MF,
   NumMemRefs = NewNum;
 }
 
-bool
-MachineInstr::hasProperty(unsigned MCFlag, QueryType Type) const {
-  if (Type == IgnoreBundle || !isBundle())
-    return getDesc().getFlags() & (1 << MCFlag);
-
+bool MachineInstr::hasPropertyInBundle(unsigned Mask, QueryType Type) const {
   const MachineBasicBlock *MBB = getParent();
   MachineBasicBlock::const_instr_iterator MII = *this; ++MII;
   while (MII != MBB->end() && MII->isInsideBundle()) {
-    if (MII->getDesc().getFlags() & (1 << MCFlag)) {
+    if (MII->getDesc().getFlags() & Mask) {
       if (Type == AnyInBundle)
         return true;
     } else {