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[flang][NFC] static assert intrinsic table is sorted #120399

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Dec 18, 2024
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[flang][NFC] static assert intrinsic table is sorted #120399

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14 changes: 14 additions & 0 deletions flang/lib/Optimizer/Builder/IntrinsicCall.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -678,6 +678,20 @@ static constexpr IntrinsicHandler handlers[]{
/*isElemental=*/true},
};

template <std::size_t N>
static constexpr bool isSorted(const IntrinsicHandler (&array)[N]) {
// Replace by std::sorted when C++20 is default (will be constexpr).
const IntrinsicHandler *lastSeen{nullptr};
bool isSorted{true};
for (const auto &x : array) {
if (lastSeen)
isSorted &= std::string_view{lastSeen->name} < std::string_view{x.name};
lastSeen = &x;
}
return isSorted;
}
static_assert(isSorted(handlers) && "map must be sorted");

static const IntrinsicHandler *findIntrinsicHandler(llvm::StringRef name) {
auto compare = [](const IntrinsicHandler &handler, llvm::StringRef name) {
return name.compare(handler.name) > 0;
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