Fixed the order in which phi nodes are created (was incorrect)

[#80895676]

evmcc/test/jump/fib1.ethel

@@ -2,4 +2,5 @@ let fib n =
     if n < 3 then 1 
     else fib (n-1) + fib (n-2)
 
-return fib 5
+return fib 10
+

evmcc/test/jump/fib1.evm

@@ -1 +1 @@
-630000000d60056300000016585d60005460206000f28060030a630000004759630000002f816001036300000016585d630000003f836002036300000016585d0163000000495860019350505058
+6007600a6010585d60005460206000f26003810a602f596020600282036010585d602a600183036010585d01603158600190509058

evmcc/test/jump/rec1.ethel

@@ -0,0 +1,4 @@
+let f n = 
+    if n == 0 then 2 else f (n-1)
+
+return f 10

evmcc/test/jump/rec1.evm

@@ -0,0 +1 @@
+6007600a6010585d60005460206000f26000810e6024596020600182036010585d602658600290509058

libevmjit/BasicBlock.cpp

@@ -52,7 +52,7 @@ llvm::Value* BasicBlock::LocalStack::get(size_t _index)
 		m_backend.insert(m_backend.begin(), nMissingVals, nullptr);
 		for (decltype(nMissingVals) i = 0; i < nMissingVals; ++i)
 		{
-			m_backend[i] = m_llvmBB->empty() ?
+			m_backend[nMissingVals - 1 - i] = m_llvmBB->empty() ?
 				llvm::PHINode::Create(Type::i256, 0, {}, m_llvmBB) :
 				llvm::PHINode::Create(Type::i256, 0, {}, m_llvmBB->getFirstNonPHI());
 			m_numRequiredStackItems += 1;