kou commented on code in PR #45697:
URL: https://github.com/apache/arrow/pull/45697#discussion_r1985999249
##########
cpp/src/gandiva/decimal_ir.cc:
##########
@@ -79,13 +79,22 @@ void DecimalIR::AddGlobals(Engine* engine) {
globalScaleMultipliers->setAlignment(LLVM_ALIGN(16));
}
+#if LLVM_VERSION_MAJOR < 20
+namespace {
+inline llvm::Function* getOrInsertDeclaration(llvm::Module* M,
llvm::Intrinsic::ID id,
+ llvm::ArrayRef<llvm::Type*> Tys)
{
+ return llvm::Intrinsic::getDeclaration(M, id, Tys);
+}
+} // namespace
+#endif
+
// Lookup intrinsic functions
void DecimalIR::InitializeIntrinsics() {
- sadd_with_overflow_fn_ = llvm::Intrinsic::getDeclaration(
+ sadd_with_overflow_fn_ = getOrInsertDeclaration(
Review Comment:
Because we have `llvm::Intrinsic::sadd_with_overflow` in arguments. C++
searches a target function based on argument types. See also:
https://en.cppreference.com/w/cpp/language/adl
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