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Byte swap for constants

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Paweł Bylica 2014-12-31 17:53:46 +01:00
parent 3df5a125fa
commit 5be8c59ff1
1 changed files with 3 additions and 0 deletions
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3
libevmjit/Endianness.cpp
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@ -22,6 +22,9 @@ llvm::Value* Endianness::bswapIfLE(llvm::IRBuilder<>& _builder, llvm::Value* _wo
if (tester{1}.isLE) if (tester{1}.isLE)
{ {
if (auto constant = llvm::dyn_cast<llvm::ConstantInt>(_word))
return _builder.getInt(constant->getValue().byteSwap());
// OPT: Cache func declaration? // OPT: Cache func declaration?
auto bswapFunc = llvm::Intrinsic::getDeclaration(_builder.GetInsertBlock()->getParent()->getParent(), llvm::Intrinsic::bswap, Type::Word); auto bswapFunc = llvm::Intrinsic::getDeclaration(_builder.GetInsertBlock()->getParent()->getParent(), llvm::Intrinsic::bswap, Type::Word);
return _builder.CreateCall(bswapFunc, _word); return _builder.CreateCall(bswapFunc, _word);