APIntHelper.h File Reference

This file defines helpers for manipulating APInts/APSInts for large numbers and operations over those numbers that may require bit width changes. More...

#include <llvm/ADT/APSInt.h>
#include <llvm/ADT/StringRef.h>
#include <algorithm>
#include <initializer_list>

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Namespaces
namespace	llzk

Functions
llvm::APSInt	llzk::expandingAdd (llvm::APSInt lhs, llvm::APSInt rhs)
	Safely add lhs and rhs, expanding the width of the result as necessary.
llvm::APSInt	llzk::expandingSub (llvm::APSInt lhs, llvm::APSInt rhs)
	Safely subtract lhs and rhs, expanding the width of the result as necessary.
llvm::APSInt	llzk::expandingMul (llvm::APSInt lhs, llvm::APSInt rhs)
	Safely multiple lhs and rhs, expanding the width of the result as necessary.
std::strong_ordering	llzk::safeCmp (llvm::APSInt lhs, llvm::APSInt rhs)
	Compares lhs and rhs, regardless of the bitwidth of lhs and rhs.
llvm::APSInt	llzk::safeToSigned (llvm::APSInt i)
	Safely converts the given int to a signed int if it is an unsigned int by adding an extra bit for the sign.
llvm::APSInt	llzk::safeToSigned (llvm::APInt i)
llvm::APSInt	llzk::safeToSigned (llvm::StringRef s)
bool	llzk::safeLt (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
bool	llzk::safeLe (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
bool	llzk::safeEq (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
bool	llzk::safeNe (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
bool	llzk::safeGt (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
bool	llzk::safeGe (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
llvm::APSInt	llzk::safeMin (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
llvm::APSInt	llzk::safeMin (std::initializer_list< llvm::APSInt > ilist)
llvm::APSInt	llzk::safeMax (const llvm::APSInt &lhs, const llvm::APSInt &rhs)
llvm::APSInt	llzk::safeMax (std::initializer_list< llvm::APSInt > ilist)

Detailed Description

This file defines helpers for manipulating APInts/APSInts for large numbers and operations over those numbers that may require bit width changes.

NOTE: MLIR 19/20 introduces a dynamic version of APInt that manages bitwidths automatically. When we upgrade LLZK to a newer version of MLIR, we can remove these utilities in favor of that.

Definition in file APIntHelper.h.