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add implementation of UNREACHABLE for MSVC in release mode.

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This reduces code size of Z3 by 0.1%  \o/

Signed-off-by: Nuno Lopes <a-nlopes@microsoft.com>
This commit is contained in:
Nuno Lopes 2015-02-05 09:51:05 +00:00
parent 3478cdb756
commit 9d5bc024e4
1 changed files with 6 additions and 0 deletions
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6
src/util/debug.h
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@ -58,12 +58,18 @@ bool is_debug_enabled(const char * tag);
#define CASSERT(TAG, COND) DEBUG_CODE(if (assertions_enabled() && is_debug_enabled(TAG) && !(COND)) { notify_assertion_violation(__FILE__, __LINE__, #COND); INVOKE_DEBUGGER(); })
#define XASSERT(COND, EXTRA_CODE) DEBUG_CODE(if (assertions_enabled() && !(COND)) { notify_assertion_violation(__FILE__, __LINE__, #COND); { EXTRA_CODE } INVOKE_DEBUGGER(); })
#ifdef Z3DEBUG
# define UNREACHABLE() DEBUG_CODE(notify_assertion_violation(__FILE__, __LINE__, "UNREACHABLE CODE WAS REACHED."); INVOKE_DEBUGGER();)
#else
#if (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 405)) || __has_builtin(__builtin_unreachable)
// only available in gcc >= 4.5 and in newer versions of clang
# define UNREACHABLE() __builtin_unreachable()
#elif defined(_MSC_VER)
# define UNREACHABLE() __assume(0)
#else
#define UNREACHABLE() DEBUG_CODE(notify_assertion_violation(__FILE__, __LINE__, "UNREACHABLE CODE WAS REACHED."); INVOKE_DEBUGGER();)
#endif
#endif
#define NOT_IMPLEMENTED_YET() { std::cerr << "NOT IMPLEMENTED YET!\n"; UNREACHABLE(); exit(ERR_NOT_IMPLEMENTED_YET); } ((void) 0)