Variables marked as live-in should be treated as input variables.

Variables marked as live-in should be treated as input variables.

Author: fangliu2020

visa/BuildIR.h

@@ -364,11 +364,6 @@ class IR_Builder
     G4_INST* FDSpillInst = nullptr;
     G4_Declare* tmpFCRet = nullptr;
 
-
-    // input declare of R1.
-    // Used to initialize header payload of render target read message
-    G4_Declare* inputR1 = nullptr;
-
     unsigned short arg_size;
     unsigned short return_var_size;
 
@@ -672,9 +667,6 @@ class IR_Builder
     G4_Declare* getBuiltinSamplerHeader() const { return builtinSamplerHeader; }
     G4_Declare* getOldA0Dot2Temp() const { return oldA0Dot2Temp; }
 
-    G4_Declare* getInputR1() { return inputR1; }
-    void setInputR1(G4_Declare* r1) { inputR1 = r1; }
-
     bool isBindlessSampler(const G4_Operand* sampler) const {
         return sampler->isSrcRegRegion() && sampler->getTopDcl() == getBuiltinBindlessSampler();
     }

visa/LocalRA.cpp

@@ -1470,7 +1470,7 @@ void LocalRA::calculateInputIntervals()
                     if (topdcl && (lr = gra.getLocalLR(topdcl)))
                     {
                         // Check whether it is input
-                        if (topdcl->getRegFile() == G4_INPUT &&
+                        if ((topdcl->getRegFile() == G4_INPUT || topdcl->isLiveIn()) &&
                             !(src->isAreg()) &&
                             topdcl->isOutput() == false &&
                             lr->hasIndirectAccess() == false &&

visa/VISAKernelImpl.cpp

@@ -1805,12 +1805,6 @@ int VISAKernelImpl::CreateVISAInputVar(
         }
     }
 
-    // save the G4_declare of "R1" input in builder
-    if (offset == getGRFSize() && size == getGRFSize())
-    {
-        m_builder->setInputR1(input->dcl);
-    }
-
     return status;
 }