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tests: probe builtin support directly in tcctest

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This commit is contained in:
Benjamin Oldenburg 2026-03-20 16:15:15 +07:00
parent d317b34c71
commit da60605fd5
1 changed files with 20 additions and 4 deletions
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24
tests/tcctest.c
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@ -3883,11 +3883,28 @@ int constant_p_var;
int func(void);
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
#if defined(__TINYC__) || defined(__GNUC__) || defined(__clang__)
#define HAVE_GNU_BUILTIN_TESTS 1
#endif
#if defined(__TINYC__)
#define HAVE_GNU_CLRSB_BUILTINS 1
#elif defined(__clang__)
#if __has_builtin(__builtin_clrsb) && __has_builtin(__builtin_clrsbl) && __has_builtin(__builtin_clrsbll)
#define HAVE_GNU_CLRSB_BUILTINS 1
#endif
#elif defined(__GNUC__) && __GNUC__ >= 6
#define HAVE_GNU_CLRSB_BUILTINS 1
#endif
/* __builtin_clz and __builtin_ctz return random values for 0 */
static void builtin_test_bits(unsigned long long x, int cnt[])
{
#if defined(__TINYC__) || GCC_MAJOR >= 4
#ifdef HAVE_GNU_BUILTIN_TESTS
cnt[0] += __builtin_ffs(x);
cnt[1] += __builtin_ffsl(x);
cnt[2] += __builtin_ffsll(x);
@ -3900,8 +3917,7 @@ static void builtin_test_bits(unsigned long long x, int cnt[])
if ((unsigned long) x) cnt[7] += __builtin_ctzl(x);
if ((unsigned long long) x) cnt[8] += __builtin_ctzll(x);
#if defined(__TINYC__) || (GCC_MAJOR >= 6 && (CC_NAME != CC_clang || GCC_MAJOR >= 11))
/* Apple clang 10 does not have __builtin_clrsb[l[l]] */
#ifdef HAVE_GNU_CLRSB_BUILTINS
cnt[9] += __builtin_clrsb(x);
cnt[10] += __builtin_clrsbl(x);
cnt[11] += __builtin_clrsbll(x);
@ -3922,7 +3938,7 @@ void builtin_test(void)
short s;
int i;
long long ll;
#if defined(__TINYC__) || GCC_MAJOR >= 3
#ifdef HAVE_GNU_BUILTIN_TESTS
COMPAT_TYPE(int, int);
COMPAT_TYPE(int, unsigned int);
COMPAT_TYPE(int, char);