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assert
2012 Nov 30
1
[LLVMdev] clang : assert ignored with -O1 ?!
...en compiling
with -O1 (not -O0).
note 1 : the name 'assert' is not the problem.
note 2 : if the while(1) loop has some side effect, like increasing a
global variable, it is not removed.
=> Is it a normal behaviour of -O1 ? I did not find any documentation
about it.
--
Fred
--
$ cat tassert.c
int loop=0;
void infloop_assert(){
while(1){
// loop++; //uncomment me
}
}
int test(int x){
if (x)
infloop_assert(); << call here
return 1;
}
######"
$ clang -O0 -emit-llvm -S -c tassert.c -o tassert.ll && cat tassert.ll
; ModuleID = 'tassert.c...