Viewing file:  pr46620.c (1.2 KB) -rw-r--r--
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/* PR tree-optimization/46620 */
/* SRA bitfield grouping used to lose track at padding bitfields in
the middle of a word. */
/* { dg-do run } */
/* { dg-options "-O2" } */
#include <stdlib.h>
struct PCT
{
unsigned char pi1 : 4;
unsigned char pi2 : 3;
unsigned char pif : 5;
unsigned char sl : 2;
unsigned char uc : 1;
unsigned char st : 1;
unsigned char p : 1;
unsigned char cs : 1;
unsigned char ss : 1;
unsigned char pc : 3;
unsigned char dmv : 4;
unsigned char cv : 4;
};
struct rt
{
struct rt* d;
void (*edo)(void * const);
short lId;
char dac;
};
struct pedr
{
struct rt re;
struct PCT pc;
unsigned char mid;
} ;
void __attribute__((__noinline__))
rei(struct rt* const me, unsigned short anId, void *ad )
{
asm volatile ("");
}
void __attribute__((__noinline__))
pedrdo(void * const p)
{
asm volatile ("");
}
void __attribute__((__noinline__))
pedri (struct pedr* const me, struct PCT ppc, unsigned char pmid)
{
rei(&(me->re), 0x7604, 0);
me->pc = ppc;
me->mid = pmid;
(me)->re.edo = pedrdo;
}
int main()
{
struct PCT ps;
struct pedr pm;
pm.pc.dmv = 0;
ps.dmv = 1;
pedri(&pm, ps, 32);
if (pm.pc.dmv != 1)
abort ();
exit (0);
}
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