Viewing file:  store_merging_20.c (1.22 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-require-effective-target store_merge } */
/* { dg-options "-O2 -fdump-tree-store-merging" } */
extern void abort (void);
struct S1 {
unsigned int flag : 1;
unsigned int size : 31;
};
__attribute__((noipa))
void foo1 (struct S1 *s, unsigned int size)
{
s->flag = 1;
s->size = size & 0x7FFFFFFF;
}
struct S2 {
unsigned int flag : 1;
unsigned int size : 15;
unsigned short count;
};
__attribute__((noipa))
void foo2 (struct S2 *s, unsigned short size)
{
s->flag = 1;
s->size = size;
s->count = 0xABCD;
}
struct S3 {
unsigned int n1 : 4;
unsigned int c : 8;
unsigned int n2 : 4;
};
__attribute__((noipa))
void foo3 (struct S3 *s, unsigned char n1, unsigned char c, unsigned char n2)
{
s->n1 = n1 & 0xF;
s->n2 = n2 & 0xF;
s->c = c;
}
int main (void)
{
struct S1 s1;
struct S2 s2;
struct S3 s3;
foo1 (&s1, 0x12345678);
if (s1.flag != 1 || s1.size != 0x12345678)
abort ();
foo2 (&s2, 0x1234);
if (s2.flag != 1 || s2.size != 0x1234 || s2.count != 0xABCD)
abort ();
foo3 (&s3, 0x12, 0x34, 0x56);
if (s3.n1 != 0x2 || s3.c != 0x34 || s3.n2 != 0x6)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "Merging successful" 3 "store-merging" } } */
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