// calculate byte offset to the start of the VB
Value* baseOffset = MUL(Z_EXT(startOffset, mInt64Ty), Z_EXT(stride, mInt64Ty));
pStreamBase = GEP(pStreamBase, baseOffset);
// calculate byte offset to the start of the VB
Value* baseOffset = MUL(Z_EXT(startOffset, mInt64Ty), Z_EXT(stride, mInt64Ty));
pStreamBase = GEP(pStreamBase, baseOffset);