Byte swap for constants

10 years ago · 5be8c59ff1
1 changed files with 3 additions and 0 deletions
--- a/libevmjit/Endianness.cpp
+++ b/libevmjit/Endianness.cpp
@ -22,6 +22,9 @@ llvm::Value* Endianness::bswapIfLE(llvm::IRBuilder<>& _builder, llvm::Value* _wo

 	if (tester{1}.isLE)
 	{
+		if (auto constant = llvm::dyn_cast<llvm::ConstantInt>(_word))
+			return _builder.getInt(constant->getValue().byteSwap());
+
 		// OPT: Cache func declaration?
 		auto bswapFunc = llvm::Intrinsic::getDeclaration(_builder.GetInsertBlock()->getParent()->getParent(), llvm::Intrinsic::bswap, Type::Word);
 		return _builder.CreateCall(bswapFunc, _word);