[VENTUS][fix] Fix the Offset of private variable offset on stack

Fix the Offset of private variable offset on stack.

libclc/riscv32/lib/workitem/workitem.S

@@ -81,7 +81,7 @@ __builtin_riscv_workitem_linear_id:
   .type __builtin_riscv_global_linear_id, @function
 __builtin_riscv_global_linear_id:
   addi sp, sp, 4
-  sw ra, 0(sp)
+  sw ra, -4(sp)
   csrr a3, CSR_KNL           # Get kernel metadata buffer
   lw t0, KNL_WORK_DIM(a3)    # Get work_dims
   call __builtin_riscv_global_id_x
@@ -109,7 +109,7 @@ __builtin_riscv_global_linear_id:
   vadd.vv v5, v5, v6      # global_linear_id3 = tmp + global_linear_id2
 .GLR:
   vadd.vx v0, v5, zero    # Return global_linear_id for 1/2/3 dims
-  lw ra, 0(sp)
+  lw ra, -4(sp)
   addi sp, sp, -4
   ret
 
@@ -202,7 +202,7 @@ __builtin_riscv_workitem_id_z:
   .type __builtin_riscv_global_id_x, @function
 __builtin_riscv_global_id_x:
   addi sp, sp, 4
-  sw ra, 0(sp)
+  sw ra, -4(sp)
   call __builtin_riscv_workitem_id_x
   csrr a0, CSR_KNL        # Get kernel metadata buffer
   csrr t1, CSR_GID_X      # Get group_id_x
@@ -211,7 +211,7 @@ __builtin_riscv_global_id_x:
   mul t6, t1, t3          # CSR_GID_X * local_size_x
   add t6, t6, t4          # Get global_offset_x + CSR_GID_X * local_size_x
   vadd.vx v0,v0, t6
-  lw ra, 0(sp)
+  lw ra, -4(sp)
   addi sp, sp, -4
   ret
 
@@ -221,7 +221,7 @@ __builtin_riscv_global_id_x:
   .type __builtin_riscv_global_id_y, @function
 __builtin_riscv_global_id_y:
   addi sp, sp, 4
-  sw ra, 0(sp)
+  sw ra, -4(sp)
   call __builtin_riscv_workitem_id_y
   csrr t1, CSR_GID_Y      # Get group_id_y
   lw t2, KNL_LC_SIZE_Y(a0) # Get local_size_y
@@ -229,7 +229,7 @@ __builtin_riscv_global_id_y:
   mul t3, t1, t2          # CSR_GID_Y * local_size_y
   add t3, t3, t4          # global_offset_y  + (CSR_GID_Y * local_size_y)
   vadd.vx v0, v0, t3      # global_id_y
-  lw ra, 0(sp)
+  lw ra, -4(sp)
   addi sp, sp, -4
   ret
 
@@ -239,7 +239,7 @@ __builtin_riscv_global_id_y:
   .type __builtin_riscv_global_id_z, @function
 __builtin_riscv_global_id_z:
   addi sp, sp, 4
-  sw ra, 0(sp)
+  sw ra, -4(sp)
   call __builtin_riscv_workitem_id_z
   csrr a0, CSR_KNL        # Get kernel metadata buffer
   csrr t1, CSR_GID_Z      # Get group_id_z
@@ -248,7 +248,7 @@ __builtin_riscv_global_id_z:
   mul t2, t2, t1          # CSR_GID_Z * local_size_z
   add t2, t2, t3          # global_offset_z + (CSR_GID_Z * local_size_z)
   vadd.vx v0, v0, t2      # global_id_z
-  lw ra, 0(sp)
+  lw ra, -4(sp)
   addi sp, sp, -4
   ret
 
@@ -387,4 +387,3 @@ __builtin_riscv_work_dim:
   lw t0, KNL_WORK_DIM(a0)   # Get work_dim
   vmv.v.x v0, t0
   ret
-

llvm/lib/Target/RISCV/RISCVFrameLowering.cpp

@@ -521,13 +521,13 @@ uint64_t RISCVFrameLowering::getStackOffset(const MachineFunction &MF,
   // because the parameters spilling to the stack are not in the current TP 
   // stack, the offset in the current stack should not be calculated from a 
   // negative FI.
-  for (int I = FI < 0 ? MFI.getObjectIndexBegin() : 0; I != FI; I++) {
+  for (int I = FI < 0 ? MFI.getObjectIndexBegin() : 0; I != FI + 1; I++) {
     if (static_cast<unsigned>(MFI.getStackID(I)) == Stack) {
       // Need to consider the alignment for different frame index
       Align Alignment =
           MFI.getObjectAlign(I).value() <= 4 ? Align(4) : MFI.getObjectAlign(I);
-      uint64_t AlignedSize = alignTo(MFI.getObjectSize(I), Alignment);
+      StackSize += MFI.getObjectSize(I);
-      StackSize += AlignedSize;
+      StackSize = alignTo(StackSize, Alignment);
     }
   }
 
@@ -537,7 +537,7 @@ uint64_t RISCVFrameLowering::getStackOffset(const MachineFunction &MF,
   if (FI < 0 && !MF.getFunction().isVarArg())
     StackSize += getStackSize(MF, RISCVStackID::VGPRSpill);
   
-  return alignTo(StackSize, Align(4));
+  return StackSize;
 }
 
 StackOffset

llvm/lib/Target/RISCV/RISCVISelLowering.cpp

@@ -11832,7 +11832,6 @@ SDValue RISCVTargetLowering::LowerFormalArguments(
   else
     analyzeInputArgs(MF, CCInfo, Ins, /*IsRet=*/false, CC_Ventus);
 
-  SmallVector<SDValue> MemVec;
   for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
     CCValAssign &VA = ArgLocs[i];
     SDValue ArgValue;
@@ -11859,15 +11858,8 @@ SDValue RISCVTargetLowering::LowerFormalArguments(
         ArgValue = unpackF64OnRV32DSoftABI(DAG, Chain, VA, DL);
       else if (VA.isRegLoc())
         ArgValue = unpackFromRegLoc(DAG, Chain, VA, DL, *this, Ins[i]);
-      else {
+      else 
-        // Temporarily put the created parameter node to MemVec instead of to 
-        // InVals directly because it will be reversed later and then put to 
-        // InVals.
         ArgValue = unpackFromMemLoc(DAG, Chain, VA, DL);
-        MemVec.push_back(ArgValue);
-        continue;
-      }
-        
 
       if (VA.getLocInfo() == CCValAssign::Indirect) {
         // If the original argument was split and passed by reference (e.g. i128
@@ -11897,12 +11889,6 @@ SDValue RISCVTargetLowering::LowerFormalArguments(
     }
   }
 
-  // Reverse MemVec and fill in InVals to ensure that the order in which the 
-  // callee functions are fetched is the same as the order in which it was 
-  // processed here.
-  while (MemVec.size())
-    InVals.push_back(MemVec.pop_back_val());
-
   if (IsVarArg) {
     // When it come to vardic arguments, the vardic function also need to follow
     // no-kernel function calling convention, we need to use VGPRs to pass
@@ -12124,6 +12110,9 @@ SDValue RISCVTargetLowering::LowerCall(CallLoweringInfo &CLI,
   SmallVector<std::pair<Register, SDValue>, 8> RegsToPass;
   SmallVector<SDValue, 8> MemOpChains;
   SDValue StackPtr;
+
+  // Get the value of adjusting the stack frame before the Call.
+  uint64_t CurrentFrameSize = Chain->getConstantOperandVal(1);
   for (unsigned i = 0, j = 0, e = ArgLocs.size(); i != e; ++i) {
     CCValAssign &VA = ArgLocs[i];
     SDValue ArgValue = OutVals[i];
@@ -12229,8 +12218,8 @@ SDValue RISCVTargetLowering::LowerCall(CallLoweringInfo &CLI,
         StackPtr = DAG.getCopyFromReg(Chain, DL, RISCV::X4, PtrVT);
       SDValue Address =
           DAG.getNode(ISD::ADD, DL, PtrVT, StackPtr,
-                      DAG.getIntPtrConstant((int)VA.getLocMemOffset() > 0 ? 
+                      DAG.getIntPtrConstant(-((int)VA.getLocMemOffset() 
-                      (-VA.getLocMemOffset()) : VA.getLocMemOffset(), DL));
+                      + CurrentFrameSize), DL));
 
       // Emit the store.
       MemOpChains.push_back(