Displaying 2 results from an estimated 2 matches for "gcc_unreachable".
2011 Mar 12
0
[LLVMdev] [patch] Change llvm_unreachable to use __builtin_unreachable() in -asserts
...lk replace of all asserts with it? By the way, GCC does this:
#ifdef ENABLE_RUNTIME_CHECKING
#define gcc_assert(EXPR) ((void)(!(EXPR) ? abort (), 0 : 0))
#else
/* Include EXPR, so that unused variable warnings do not occur. */
#define gcc_assert(EXPR) ((void)(0 && (EXPR)))
#endif
/* Use gcc_unreachable() to mark unreachable locations (like an
unreachable default case of a switch. Do not use gcc_assert(0). */
#define gcc_unreachable() (abort ())
Ciao, Duncan.
2011 Mar 12
3
[LLVMdev] [patch] Change llvm_unreachable to use __builtin_unreachable() in -asserts
On 12.03.2011, at 11:17, Duncan Sands wrote:
> Hi John,
>
>> This patch implements the current consensus of PR8973:
>> http://llvm.org/bugs/show_bug.cgi?id=8973.
>>
>> The macro llvm_unreachable is used in LLVM to indicate that
>> a particular place in a function is not supposed to be reachable
>> during execution. Like an assert macro, it takes a