Fix the performance regression caused by scalar suppression.

Change-Id: I191762c90a8eee6d8bfbda13af1b864fe3f6c4cc

Author: bcheng0127

visa/LocalScheduler/LocalScheduler_G4IR.cpp

@@ -937,7 +937,7 @@ bool DDD::hasReadSuppression(G4_INST *prevInst, G4_INST *nextInst, BitSet &liveD
         if (currInstRegs[0][0] == nextInstRegs[0][0] && currInstRegs[0][0] != -1 && curInstSimd8 && nextInstSimd8)
         {
             //No scalar supperssion
-            if ((!kernel->fg.builder->hasScalarReadSuppression()) || (!isCurrScalar[0] && !isNextScalar[0]))
+            if (!isCurrScalar[0] && !isNextScalar[0])
             {
                 return true;
             }
@@ -950,7 +950,7 @@ bool DDD::hasReadSuppression(G4_INST *prevInst, G4_INST *nextInst, BitSet &liveD
         (( curInstSimd8 && nextInstSimd8) || ( !curInstSimd8 && !nextInstSimd8)))
     {
         //No scalar supperssion
-        if ((!kernel->fg.builder->hasScalarReadSuppression()) || (!isCurrScalar[1] && !isNextScalar[1]))
+        if (!isCurrScalar[1] && !isNextScalar[1])
         {
             return true;
         }
@@ -959,7 +959,7 @@ bool DDD::hasReadSuppression(G4_INST *prevInst, G4_INST *nextInst, BitSet &liveD
     if (currInstRegs[0][2] == nextInstRegs[0][2] && currInstRegs[0][2] != -1 && curInstSimd8 && nextInstSimd8)
     {
         //No scalar supperssion
-        if ((!kernel->fg.builder->hasScalarReadSuppression()) || (!isCurrScalar[2] && !isNextScalar[2]))
+        if (!isCurrScalar[2] && !isNextScalar[2])
         {
             return true;
         }