[rtems commit] testsuites/unit: Add tests for compiler builtins
Sebastian Huber
sebh at rtems.org
Thu Nov 2 14:59:35 UTC 2023
Module: rtems
Branch: master
Commit: 1adf143246200453860b5fd87f1e6d8a4a6b41c7
Changeset: http://git.rtems.org/rtems/commit/?id=1adf143246200453860b5fd87f1e6d8a4a6b41c7
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Thu Nov 2 13:09:45 2023 +0100
testsuites/unit: Add tests for compiler builtins
Test some compiler builtins which may use integer library routines:
https://gcc.gnu.org/onlinedocs/gccint/Integer-library-routines.html
Update #3716.
---
testsuites/unit/tc-compiler-builtins.c | 399 ++++++++++++++++++++++++++++++++-
1 file changed, 391 insertions(+), 8 deletions(-)
diff --git a/testsuites/unit/tc-compiler-builtins.c b/testsuites/unit/tc-compiler-builtins.c
index 13a9c4a248..3beebe06fa 100644
--- a/testsuites/unit/tc-compiler-builtins.c
+++ b/testsuites/unit/tc-compiler-builtins.c
@@ -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 signed 64-bit divisions for a sample set of values.
+ * @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_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();
}
/** @} */
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