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testsuites/unit: Add tests for compiler builtins

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Test some compiler builtins which may use integer library routines:

https://gcc.gnu.org/onlinedocs/gccint/Integer-library-routines.html

Update #3716.
This commit is contained in:
Sebastian Huber
2023-11-02 13:09:45 +01:00
parent 0c65f9faf3
commit 1adf143246
1 changed files with 391 additions and 8 deletions
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399
testsuites/unit/tc-compiler-builtins.c
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@@ -78,6 +78,39 @@
*
* - Check the return value of __builtin_ctz() for a sample set of inputs.
*
* - Check the return value of __builtin_ctzll() for a sample set of inputs.
*
* - Check the return value of __builtin_ffs() for a sample set of inputs.
*
* - Check the return value of __builtin_ffsll() for a sample set of inputs.
*
* - Check the return value of __builtin_parity() for a sample set of inputs.
*
* - Check the return value of __builtin_parityll() for a sample set of inputs.
*
* - Check the return value of __builtin_popcount() for a sample set of inputs.
*
* - Check the return value of __builtin_popcountll() for a sample set of
* inputs.
*
* - Check the return value of __builtin_bswap32() for a sample set of inputs.
*
* - Check the return value of __builtin_bswap64() for a sample set of inputs.
*
* - Check signed 64-bit comparisons for a sample set of values.
*
* - Check unsigned 64-bit comparisons for a sample set of values.
*
* - Check signed 64-bit arithmetic left shift for a sample set of values.
*
* - Check signed 64-bit arithmetic right shift for a sample set of values.
*
* - Check unsigned 64-bit logical right shift for a sample set of values.
*
* - Check signed 64-bit multiplication for a sample set of values.
*
* - Check signed 64-bit negation for a sample set of values.
*
* - Check signed 64-bit divisions for a sample set of values.
*
* - Check unsigned 64-bit divisions for a sample set of values.
@@ -180,22 +213,356 @@ static void CompilerUnitBuiltins_Action_1( void )
*/
static void CompilerUnitBuiltins_Action_2( void )
{
volatile int n;
volatile unsigned int n;
n = 1;
n = 1U;
T_eq_int( __builtin_ctz( n ), 0 );
n = 1 << 31;
n = 1U << 31;
T_eq_int( __builtin_ctz( n ), 31 );
n = ~0;
n = ~0U;
T_eq_int( __builtin_ctz( n ), 0 );
}
/**
* @brief Check the return value of __builtin_ctzll() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_3( void )
{
volatile unsigned long long n;
n = 1ULL;
T_eq_int( __builtin_ctzll( n ), 0 );
n = 1ULL << 31;
T_eq_int( __builtin_ctzll( n ), 31 );
n = 1ULL << 32;
T_eq_int( __builtin_ctzll( n ), 32 );
n = 1ULL << 63;
T_eq_int( __builtin_ctzll( n ), 63 );
n = ~0ULL;
T_eq_int( __builtin_ctzll( n ), 0 );
}
/**
* @brief Check the return value of __builtin_ffs() for a sample set of inputs.
*/
static void CompilerUnitBuiltins_Action_4( void )
{
volatile unsigned int n;
n = 1U;
T_eq_int( __builtin_ffs( n ), 1 );
n = 1U << 31;
T_eq_int( __builtin_ffs( n ), 32 );
n = 0U;
T_eq_int( __builtin_ffs( n ), 0 );
}
/**
* @brief Check the return value of __builtin_ffsll() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_5( void )
{
volatile unsigned long long n;
n = 1ULL;
T_eq_int( __builtin_ffsll( n ), 1 );
n = 1ULL << 31;
T_eq_int( __builtin_ffsll( n ), 32 );
n = 1ULL << 32;
T_eq_int( __builtin_ffsll( n ), 33 );
n = 1ULL << 63;
T_eq_int( __builtin_ffsll( n ), 64 );
n = 0ULL;
T_eq_int( __builtin_ffsll( n ), 0 );
}
/**
* @brief Check the return value of __builtin_parity() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_6( void )
{
volatile unsigned int n;
n = 1U;
T_eq_int( __builtin_parity( n ), 1 );
n = ~0U;
T_eq_int( __builtin_parity( n ), 0 );
}
/**
* @brief Check the return value of __builtin_parityll() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_7( void )
{
volatile unsigned long long n;
n = 1ULL;
T_eq_int( __builtin_parityll( n ), 1 );
n = ~0ULL;
T_eq_int( __builtin_parityll( n ), 0 );
}
/**
* @brief Check the return value of __builtin_popcount() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_8( void )
{
volatile unsigned int n;
n = 0U;
T_eq_int( __builtin_popcount( n ), 0 );
n = 1U;
T_eq_int( __builtin_popcount( n ), 1 );
n = ~0U;
T_eq_int( __builtin_popcount( n ), 32 );
}
/**
* @brief Check the return value of __builtin_popcountll() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_9( void )
{
volatile unsigned long long n;
n = 0ULL;
T_eq_int( __builtin_popcountll( n ), 0 );
n = 1ULL;
T_eq_int( __builtin_popcountll( n ), 1 );
n = ~0ULL;
T_eq_int( __builtin_popcountll( n ), 64 );
}
/**
* @brief Check the return value of __builtin_bswap32() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_10( void )
{
volatile uint32_t n;
n = UINT32_C( 0 );
T_eq_u32( __builtin_bswap32( n ), n );
n = UINT32_C( 1 );
T_eq_u32( __builtin_bswap32( n ), n << 24 );
n = UINT32_C( 0x12345678 );
T_eq_u32( __builtin_bswap32( n ), UINT32_C( 0x78563412 ) );
n = ~UINT32_C( 0 );
T_eq_u32( __builtin_bswap32( n ), n );
}
/**
* @brief Check the return value of __builtin_bswap64() for a sample set of
* inputs.
*/
static void CompilerUnitBuiltins_Action_11( void )
{
volatile uint64_t n;
n = UINT64_C( 0 );
T_eq_u64( __builtin_bswap64( n ), n );
n = UINT64_C( 1 );
T_eq_u64( __builtin_bswap64( n ), n << 56 );
n = UINT64_C( 0x123456789abcdef0 );
T_eq_u64( __builtin_bswap64( n ), UINT64_C( 0xf0debc9a78563412 ) );
n = ~UINT64_C( 0 );
T_eq_u64( __builtin_bswap64( n ), n );
}
/**
* @brief Check signed 64-bit comparisons for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_12( void )
{
volatile int64_t a;
volatile int64_t b;
a = INT64_C( 0 );
b = INT64_C( 0 );
T_false( a < b );
a = INT64_C( 0 );
b = INT64_C( 1 );
T_true( a < b );
a = INT64_C( 0x123456789abcdef0 );
b = INT64_C( 0xf0debc9a78563412 );
T_false( a < b );
a = INT64_C( 0xf0debc9a78563412 );
b = INT64_C( 0x123456789abcdef0 );
T_true( a < b );
}
/**
* @brief Check unsigned 64-bit comparisons for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_13( void )
{
volatile uint64_t a;
volatile uint64_t b;
a = UINT64_C( 0 );
b = UINT64_C( 0 );
T_false( a < b );
a = UINT64_C( 0 );
b = UINT64_C( 1 );
T_true( a < b );
a = UINT64_C( 0x123456789abcdef0 );
b = UINT64_C( 0xf0debc9a78563412 );
T_true( a < b );
a = UINT64_C( 0xf0debc9a78563412 );
b = UINT64_C( 0x123456789abcdef0 );
T_false( a < b );
}
/**
* @brief Check signed 64-bit arithmetic left shift for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_14( void )
{
volatile int64_t i;
volatile int s;
i = INT64_C( 1 );
s = 0;
T_eq_i64( i << s, INT64_C( 1 ) );
i = -INT64_C( 1 );
s = 0;
T_eq_i64( i << s, -INT64_C( 1 ) );
i = INT64_C( 1 );
s = 1;
T_eq_i64( i << s, INT64_C( 2 ) );
i = -INT64_C( 1 );
s = 1;
T_eq_i64( i << s, -INT64_C( 2 ) );
}
/**
* @brief Check signed 64-bit arithmetic right shift for a sample set of
* values.
*/
static void CompilerUnitBuiltins_Action_15( void )
{
volatile int64_t i;
volatile int s;
i = INT64_C( 1 );
s = 0;
T_eq_i64( i >> s, INT64_C( 1 ) );
i = -INT64_C( 1 );
s = 0;
T_eq_i64( i >> s, -INT64_C( 1 ) );
i = INT64_C( 2 );
s = 1;
T_eq_i64( i >> s, INT64_C( 1 ) );
i = -INT64_C( 2 );
s = 1;
T_eq_i64( i >> s, -INT64_C( 1 ) );
}
/**
* @brief Check unsigned 64-bit logical right shift for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_16( void )
{
volatile uint64_t i;
volatile int s;
i = UINT64_C( 1 );
s = 0;
T_eq_u64( i >> s, UINT64_C( 1 ) );
i = -UINT64_C( 1 );
s = 0;
T_eq_u64( i >> s, UINT64_C( 0xffffffffffffffff ) );
i = UINT64_C( 2 );
s = 1;
T_eq_u64( i >> s, UINT64_C( 1 ) );
i = -UINT64_C( 2 );
s = 1;
T_eq_u64( i >> s, UINT64_C( 0x7fffffffffffffff ) );
}
/**
* @brief Check signed 64-bit multiplication for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_17( void )
{
volatile int64_t a;
volatile int64_t b;
a = INT64_C( 1 );
b = INT64_C( 1 );
T_eq_i64( a * b, INT64_C( 1 ) );
a = INT64_C( 1 );
b = INT64_C( 0 );
T_eq_i64( a * b, INT64_C( 0 ) );
a = INT64_C( 0 );
b = INT64_C( 1 );
T_eq_i64( a * b, INT64_C( 0 ) );
}
/**
* @brief Check signed 64-bit negation for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_18( void )
{
volatile int64_t i;
i = INT64_C( 1 );
T_eq_i64( -i, -INT64_C( 1 ) );
i = -INT64_C( 1 );
T_eq_i64( -i, INT64_C( 1 ) );
}
/**
* @brief Check signed 64-bit divisions for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_3( void )
static void CompilerUnitBuiltins_Action_19( void )
{
volatile int64_t n;
volatile int64_t d;
@@ -304,7 +671,7 @@ static void CompilerUnitBuiltins_Action_3( void )
/**
* @brief Check unsigned 64-bit divisions for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_4( void )
static void CompilerUnitBuiltins_Action_20( void )
{
volatile uint64_t n;
volatile uint64_t d;
@@ -381,7 +748,7 @@ static void CompilerUnitBuiltins_Action_4( void )
/**
* @brief Check signed 64-bit modulo operations for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_5( void )
static void CompilerUnitBuiltins_Action_21( void )
{
volatile int64_t n;
volatile int64_t d;
@@ -502,7 +869,7 @@ static void CompilerUnitBuiltins_Action_5( void )
/**
* @brief Check unsigned 64-bit modulo operations for a sample set of values.
*/
static void CompilerUnitBuiltins_Action_6( void )
static void CompilerUnitBuiltins_Action_22( void )
{
volatile uint64_t n;
volatile uint64_t d;
@@ -560,6 +927,22 @@ T_TEST_CASE_FIXTURE( CompilerUnitBuiltins, &CompilerUnitBuiltins_Fixture )
CompilerUnitBuiltins_Action_4();
CompilerUnitBuiltins_Action_5();
CompilerUnitBuiltins_Action_6();
CompilerUnitBuiltins_Action_7();
CompilerUnitBuiltins_Action_8();
CompilerUnitBuiltins_Action_9();
CompilerUnitBuiltins_Action_10();
CompilerUnitBuiltins_Action_11();
CompilerUnitBuiltins_Action_12();
CompilerUnitBuiltins_Action_13();
CompilerUnitBuiltins_Action_14();
CompilerUnitBuiltins_Action_15();
CompilerUnitBuiltins_Action_16();
CompilerUnitBuiltins_Action_17();
CompilerUnitBuiltins_Action_18();
CompilerUnitBuiltins_Action_19();
CompilerUnitBuiltins_Action_20();
CompilerUnitBuiltins_Action_21();
CompilerUnitBuiltins_Action_22();
}
/** @} */