head	1.1;
branch	1.1.1;
access;
symbols
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	netbsd-11-0-RC3:1.1.1.2
	netbsd-11-0-RC2:1.1.1.2
	netbsd-11-0-RC1:1.1.1.2
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	netbsd-11:1.1.1.2.0.10
	netbsd-11-base:1.1.1.2
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	clang-337282:1.1.1.1
	LLVM:1.1.1;
locks; strict;
comment	@// @;


1.1
date	2018.07.17.18.31.35;	author joerg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	wDzL46ALjrCZgwKA;

1.1.1.1
date	2018.07.17.18.31.35;	author joerg;	state Exp;
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	1.1.1.1.2.1
	1.1.1.1.4.1;
next	1.1.1.2;
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1.1.1.2
date	2019.11.13.22.22.54;	author joerg;	state dead;
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1.1.1.1.2.1
date	2018.07.17.18.31.35;	author pgoyette;	state dead;
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next	1.1.1.1.2.2;
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1.1.1.1.2.2
date	2018.07.28.04.34.11;	author pgoyette;	state Exp;
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1.1.1.1.4.1
date	2018.07.17.18.31.35;	author christos;	state dead;
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1.1.1.1.4.2
date	2019.06.10.21.46.35;	author christos;	state Exp;
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1.1.1.1.4.3
date	2020.04.13.07.50.22;	author martin;	state dead;
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next	;
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desc
@@


1.1
log
@Initial revision
@
text
@// RUN: %clang_cc1 -fsyntax-only -std=c++17 -verify %s
// expected-no-diagnostics

#include <limits.h>

int a() {
  const int x = 3;
  static int z;
  constexpr int *y = &z;
  return []() { return __builtin_sub_overflow((int)x, (int)x, (int *)y); }();
}
int a2() {
  const int x = 3;
  static int z;
  constexpr int *y = &z;
  return []() { return __builtin_sub_overflow(x, x, y); }();
}

template<typename T>
struct Result {
  bool B;
  T Value;
  constexpr bool operator==(const Result<T> &Other) {
    return B == Other.B && Value == Other.Value;
  }
};


template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> add(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_add_overflow(lhs, rhs, &sum), sum};
}

static_assert(add<short>(static_cast<char>(120), static_cast<char>(10)) == Result<short>{false, 130});
static_assert(add<char>(static_cast<short>(120), static_cast<short>(10)) == Result<char>{true, -126});
static_assert(add<unsigned int>(INT_MAX, INT_MAX) == Result<unsigned int>{false, static_cast<unsigned int>(INT_MAX) * 2u});
static_assert(add<int>(static_cast<unsigned int>(INT_MAX), 1u) == Result<int>{true, INT_MIN});

static_assert(add<int>(17, 22) == Result<int>{false, 39});
static_assert(add<int>(INT_MAX - 22, 24) == Result<int>{true, INT_MIN + 1});
static_assert(add<int>(INT_MIN + 22, -23) == Result<int>{true, INT_MAX});

template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> sub(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_sub_overflow(lhs, rhs, &sum), sum};
}

static_assert(sub<unsigned char>(static_cast<char>(0),static_cast<char>(1)) == Result<unsigned char>{true, UCHAR_MAX});
static_assert(sub<char>(static_cast<unsigned char>(0),static_cast<unsigned char>(1)) == Result<char>{false, -1});
static_assert(sub<unsigned short>(static_cast<short>(0),static_cast<short>(1)) == Result<unsigned short>{true, USHRT_MAX});

static_assert(sub<int>(17,22) == Result<int>{false, -5});
static_assert(sub<int>(INT_MAX - 22, -23) == Result<int>{true, INT_MIN});
static_assert(sub<int>(INT_MIN + 22, 23) == Result<int>{true, INT_MAX});

template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> mul(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_mul_overflow(lhs, rhs, &sum), sum};
}

static_assert(mul<int>(17,22) == Result<int>{false, 374});
static_assert(mul<int>(INT_MAX / 22, 23) == Result<int>{true, -2049870757});
static_assert(mul<int>(INT_MIN / 22, -23) == Result<int>{true, -2049870757});

constexpr Result<int> sadd(int lhs, int rhs) {
  int sum{};
  return {__builtin_sadd_overflow(lhs, rhs, &sum), sum};
}

static_assert(sadd(17,22) == Result<int>{false, 39});
static_assert(sadd(INT_MAX - 22, 23) == Result<int>{true, INT_MIN});
static_assert(sadd(INT_MIN + 22, -23) == Result<int>{true, INT_MAX});

constexpr Result<int> ssub(int lhs, int rhs) {
  int sum{};
  return {__builtin_ssub_overflow(lhs, rhs, &sum), sum};
}

static_assert(ssub(17,22) == Result<int>{false, -5});
static_assert(ssub(INT_MAX - 22, -23) == Result<int>{true, INT_MIN});
static_assert(ssub(INT_MIN + 22, 23) == Result<int>{true, INT_MAX});

constexpr Result<int> smul(int lhs, int rhs) {
  int sum{};
  return {__builtin_smul_overflow(lhs, rhs, &sum), sum};
}

static_assert(smul(17,22) == Result<int>{false, 374});
static_assert(smul(INT_MAX / 22, 23) == Result<int>{true, -2049870757});
static_assert(smul(INT_MIN / 22, -23) == Result<int>{true, -2049870757});
@


1.1.1.1
log
@Import clang r337282 from trunk
@
text
@@


1.1.1.2
log
@Mark old LLVM instance as dead.
@
text
@@


1.1.1.1.4.1
log
@file builtins-overflow.cpp was added on branch phil-wifi on 2019-06-10 21:46:35 +0000
@
text
@d1 93
@


1.1.1.1.4.2
log
@Sync with HEAD
@
text
@a0 93
// RUN: %clang_cc1 -fsyntax-only -std=c++17 -verify %s
// expected-no-diagnostics

#include <limits.h>

int a() {
  const int x = 3;
  static int z;
  constexpr int *y = &z;
  return []() { return __builtin_sub_overflow((int)x, (int)x, (int *)y); }();
}
int a2() {
  const int x = 3;
  static int z;
  constexpr int *y = &z;
  return []() { return __builtin_sub_overflow(x, x, y); }();
}

template<typename T>
struct Result {
  bool B;
  T Value;
  constexpr bool operator==(const Result<T> &Other) {
    return B == Other.B && Value == Other.Value;
  }
};


template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> add(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_add_overflow(lhs, rhs, &sum), sum};
}

static_assert(add<short>(static_cast<char>(120), static_cast<char>(10)) == Result<short>{false, 130});
static_assert(add<char>(static_cast<short>(120), static_cast<short>(10)) == Result<char>{true, -126});
static_assert(add<unsigned int>(INT_MAX, INT_MAX) == Result<unsigned int>{false, static_cast<unsigned int>(INT_MAX) * 2u});
static_assert(add<int>(static_cast<unsigned int>(INT_MAX), 1u) == Result<int>{true, INT_MIN});

static_assert(add<int>(17, 22) == Result<int>{false, 39});
static_assert(add<int>(INT_MAX - 22, 24) == Result<int>{true, INT_MIN + 1});
static_assert(add<int>(INT_MIN + 22, -23) == Result<int>{true, INT_MAX});

template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> sub(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_sub_overflow(lhs, rhs, &sum), sum};
}

static_assert(sub<unsigned char>(static_cast<char>(0),static_cast<char>(1)) == Result<unsigned char>{true, UCHAR_MAX});
static_assert(sub<char>(static_cast<unsigned char>(0),static_cast<unsigned char>(1)) == Result<char>{false, -1});
static_assert(sub<unsigned short>(static_cast<short>(0),static_cast<short>(1)) == Result<unsigned short>{true, USHRT_MAX});

static_assert(sub<int>(17,22) == Result<int>{false, -5});
static_assert(sub<int>(INT_MAX - 22, -23) == Result<int>{true, INT_MIN});
static_assert(sub<int>(INT_MIN + 22, 23) == Result<int>{true, INT_MAX});

template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> mul(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_mul_overflow(lhs, rhs, &sum), sum};
}

static_assert(mul<int>(17,22) == Result<int>{false, 374});
static_assert(mul<int>(INT_MAX / 22, 23) == Result<int>{true, -2049870757});
static_assert(mul<int>(INT_MIN / 22, -23) == Result<int>{true, -2049870757});

constexpr Result<int> sadd(int lhs, int rhs) {
  int sum{};
  return {__builtin_sadd_overflow(lhs, rhs, &sum), sum};
}

static_assert(sadd(17,22) == Result<int>{false, 39});
static_assert(sadd(INT_MAX - 22, 23) == Result<int>{true, INT_MIN});
static_assert(sadd(INT_MIN + 22, -23) == Result<int>{true, INT_MAX});

constexpr Result<int> ssub(int lhs, int rhs) {
  int sum{};
  return {__builtin_ssub_overflow(lhs, rhs, &sum), sum};
}

static_assert(ssub(17,22) == Result<int>{false, -5});
static_assert(ssub(INT_MAX - 22, -23) == Result<int>{true, INT_MIN});
static_assert(ssub(INT_MIN + 22, 23) == Result<int>{true, INT_MAX});

constexpr Result<int> smul(int lhs, int rhs) {
  int sum{};
  return {__builtin_smul_overflow(lhs, rhs, &sum), sum};
}

static_assert(smul(17,22) == Result<int>{false, 374});
static_assert(smul(INT_MAX / 22, 23) == Result<int>{true, -2049870757});
static_assert(smul(INT_MIN / 22, -23) == Result<int>{true, -2049870757});
@


1.1.1.1.4.3
log
@Mostly merge changes from HEAD upto 20200411
@
text
@@


1.1.1.1.2.1
log
@file builtins-overflow.cpp was added on branch pgoyette-compat on 2018-07-28 04:34:11 +0000
@
text
@d1 93
@


1.1.1.1.2.2
log
@Sync with HEAD
@
text
@a0 93
// RUN: %clang_cc1 -fsyntax-only -std=c++17 -verify %s
// expected-no-diagnostics

#include <limits.h>

int a() {
  const int x = 3;
  static int z;
  constexpr int *y = &z;
  return []() { return __builtin_sub_overflow((int)x, (int)x, (int *)y); }();
}
int a2() {
  const int x = 3;
  static int z;
  constexpr int *y = &z;
  return []() { return __builtin_sub_overflow(x, x, y); }();
}

template<typename T>
struct Result {
  bool B;
  T Value;
  constexpr bool operator==(const Result<T> &Other) {
    return B == Other.B && Value == Other.Value;
  }
};


template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> add(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_add_overflow(lhs, rhs, &sum), sum};
}

static_assert(add<short>(static_cast<char>(120), static_cast<char>(10)) == Result<short>{false, 130});
static_assert(add<char>(static_cast<short>(120), static_cast<short>(10)) == Result<char>{true, -126});
static_assert(add<unsigned int>(INT_MAX, INT_MAX) == Result<unsigned int>{false, static_cast<unsigned int>(INT_MAX) * 2u});
static_assert(add<int>(static_cast<unsigned int>(INT_MAX), 1u) == Result<int>{true, INT_MIN});

static_assert(add<int>(17, 22) == Result<int>{false, 39});
static_assert(add<int>(INT_MAX - 22, 24) == Result<int>{true, INT_MIN + 1});
static_assert(add<int>(INT_MIN + 22, -23) == Result<int>{true, INT_MAX});

template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> sub(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_sub_overflow(lhs, rhs, &sum), sum};
}

static_assert(sub<unsigned char>(static_cast<char>(0),static_cast<char>(1)) == Result<unsigned char>{true, UCHAR_MAX});
static_assert(sub<char>(static_cast<unsigned char>(0),static_cast<unsigned char>(1)) == Result<char>{false, -1});
static_assert(sub<unsigned short>(static_cast<short>(0),static_cast<short>(1)) == Result<unsigned short>{true, USHRT_MAX});

static_assert(sub<int>(17,22) == Result<int>{false, -5});
static_assert(sub<int>(INT_MAX - 22, -23) == Result<int>{true, INT_MIN});
static_assert(sub<int>(INT_MIN + 22, 23) == Result<int>{true, INT_MAX});

template <typename RET, typename LHS, typename RHS>
constexpr Result<RET> mul(LHS &&lhs, RHS &&rhs) {
  RET sum{};
  return {__builtin_mul_overflow(lhs, rhs, &sum), sum};
}

static_assert(mul<int>(17,22) == Result<int>{false, 374});
static_assert(mul<int>(INT_MAX / 22, 23) == Result<int>{true, -2049870757});
static_assert(mul<int>(INT_MIN / 22, -23) == Result<int>{true, -2049870757});

constexpr Result<int> sadd(int lhs, int rhs) {
  int sum{};
  return {__builtin_sadd_overflow(lhs, rhs, &sum), sum};
}

static_assert(sadd(17,22) == Result<int>{false, 39});
static_assert(sadd(INT_MAX - 22, 23) == Result<int>{true, INT_MIN});
static_assert(sadd(INT_MIN + 22, -23) == Result<int>{true, INT_MAX});

constexpr Result<int> ssub(int lhs, int rhs) {
  int sum{};
  return {__builtin_ssub_overflow(lhs, rhs, &sum), sum};
}

static_assert(ssub(17,22) == Result<int>{false, -5});
static_assert(ssub(INT_MAX - 22, -23) == Result<int>{true, INT_MIN});
static_assert(ssub(INT_MIN + 22, 23) == Result<int>{true, INT_MAX});

constexpr Result<int> smul(int lhs, int rhs) {
  int sum{};
  return {__builtin_smul_overflow(lhs, rhs, &sum), sum};
}

static_assert(smul(17,22) == Result<int>{false, 374});
static_assert(smul(INT_MAX / 22, 23) == Result<int>{true, -2049870757});
static_assert(smul(INT_MIN / 22, -23) == Result<int>{true, -2049870757});
@