Hi,
Compiling below program:
#define STREAM_ARRAY_SIZE (1107296256)
double a[STREAM_ARRAY_SIZE],
b[STREAM_ARRAY_SIZE],
c[STREAM_ARRAY_SIZE];
typedef struct {
volatile int locked;
} spinlock_t;
volatile int cnt32=0;
volatile long cnt64=0;
void atom(){
__atomic_fetch_add(&cnt32,
On Tue, Nov 10, 2020 at 3:04 PM 172060045 <172060...@hdu.edu.cn> wrote:
>
> Hi,
>
> Recently, I was interested in GCC AutoFDO optimization, which works by
> sampling specific PMU event on production machines and using those profiles
> to guide optimization. In this way, information such as cache
On Fri, Apr 23, 2021 at 4:16 AM Martin Liška wrote:
>
> On 4/22/21 9:58 PM, Eugene Rozenfeld via Gcc wrote:
> > GCC documentation for AutoFDO points to create_gcov tool that converts
> > perf.data file into gcov format that can be consumed by gcc with
> > -fauto-profile (https://gcc.gnu.org/onli
Hi,
In function ref_maybe_used_by_call_p_1, there is below code snippet
/* The following builtins do not read from memory. */
case BUILT_IN_FREE:
...
return false;
I am confused because free function does read from (and even write to)
memory pointed to by pas
On Sun, Nov 28, 2021 at 4:11 PM Jan Hubicka wrote:
>
> > Hi,
> > In function ref_maybe_used_by_call_p_1, there is below code snippet
> > /* The following builtins do not read from memory. */
> > case BUILT_IN_FREE:
> > ...
> >return false;
> >
> > I am confu
