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Check asm goto support with AC_LINK_IFELSE #13716

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Merged
merged 1 commit into from
Mar 15, 2024
Merged

Check asm goto support with AC_LINK_IFELSE #13716

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23 changes: 4 additions & 19 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -744,33 +744,18 @@ if test "$ac_cv_func___crc32d" = "yes"; then
fi

dnl Check for asm goto support.
AC_CACHE_CHECK([for asm goto], ac_cv__asm_goto,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
int main(void) {
#if defined(__x86_64__) || defined(__i386__)
__asm__ goto("jmp %l0\n" :::: end);
#elif defined(__aarch64__)
__asm__ goto("b %l0\n" :::: end);
#endif
end:
return 0;
}
]])], [ac_cv__asm_goto=yes], [ac_cv__asm_goto=no], [
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
int main(void) {
AC_CACHE_CHECK([for asm goto], [ac_cv__asm_goto],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [[
#if defined(__x86_64__) || defined(__i386__)
__asm__ goto("jmp %l0\n" :::: end);
#elif defined(__aarch64__)
__asm__ goto("b %l0\n" :::: end);
#endif
end:
return 0;
}
]])], [ac_cv__asm_goto=yes], [ac_cv__asm_goto=no])
])])

]])], [ac_cv__asm_goto=yes], [ac_cv__asm_goto=no])])
if test "$ac_cv__asm_goto" = yes; then
AC_DEFINE(HAVE_ASM_GOTO,1,[Define if asm goto support])
AC_DEFINE([HAVE_ASM_GOTO], [1], [Define if asm goto support is available.])
fi

dnl Check valgrind support.
Expand Down