Reduce the RA compilation time - isEvenAlign

Author: bcheng0127

visa/GraphColor.cpp

@@ -5412,6 +5412,11 @@ void GraphColor::createLiveRanges(unsigned reserveSpillSize)
         {
             lrs[var->getId()]->allocForbiddenCallerSave(mem, &builder.kernel);
         }
+
+        if (gra.isEvenAligned(dcl))
+        {
+            lrs[var->getId()]->setEvenAlign();
+        }
     }
 }
 
@@ -12547,8 +12552,8 @@ void  GlobalRA::insertRestoreAddr(G4_BB* bb)
 //
 unsigned GraphColor::edgeWeightGRF(LiveRange* lr1, LiveRange* lr2)
 {
-    bool lr1EvenAlign = gra.isEvenAligned(lr1->getVar()->getDeclare());
-    bool lr2EvenAlign = gra.isEvenAligned(lr2->getVar()->getDeclare());
+    bool lr1EvenAlign = lr1->isEvenAlign();
+    bool lr2EvenAlign = lr2->isEvenAlign();
     unsigned lr1_nreg = lr1->getNumRegNeeded();
     unsigned lr2_nreg = lr2->getNumRegNeeded();
 

visa/GraphColor.h

@@ -84,6 +84,7 @@ class LiveRange
     bool* forbidden = nullptr;
     int numForbidden = -1;
     bool spilled = false;
+    bool evenAlign = false;
 
     GlobalRA& gra;
     unsigned numRegNeeded;
@@ -179,6 +180,11 @@ class LiveRange
         reg.subRegOff = 0;
     }
 
+    void setEvenAlign() { evenAlign = true; }
+    bool isEvenAlign() const {
+        return evenAlign;
+    }
+
     bool getIsPseudoNode() const { return isPseudoNode; }
     void setIsPseudoNode() { isPseudoNode = true; }
     bool getIsPartialDcl() const { return isPartialDeclare; }