1  /* PR target/80968 */
       2  /* { dg-do compile } */
       3  /* { dg-skip-if "no register windows" { *-*-* } { "-mflat" } { "" } } */
       4  /* { dg-require-effective-target ilp32 } */
       5  /* { dg-options "-mcpu=ultrasparc -O" } */
       6  
       7  /* Make sure references to the stack frame do not slip into the delay slot
       8     of a return instruction.  */
       9  
      10  struct crypto_shash {
      11  	unsigned int descsize;
      12  };
      13  struct crypto_shash *tfm;
      14  
      15  struct shash_desc {
      16  	struct crypto_shash *tfm;
      17  	unsigned int flags;
      18  
      19  	void *__ctx[] __attribute__((aligned(8)));
      20  };
      21  
      22  static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm)
      23  {
      24  	return tfm->descsize;
      25  }
      26  
      27  static inline void *shash_desc_ctx(struct shash_desc *desc)
      28  {
      29  	return desc->__ctx;
      30  }
      31  
      32  #define SHASH_DESC_ON_STACK(shash, ctx)				  \
      33  	char __##shash##_desc[sizeof(struct shash_desc) +	  \
      34  			      crypto_shash_descsize(ctx)] __attribute__((aligned(8))); \
      35  	struct shash_desc *shash = (struct shash_desc *)__##shash##_desc
      36  
      37  extern int crypto_shash_update(struct shash_desc *, const void *, unsigned int);
      38  
      39  unsigned int bug(unsigned int crc, const void *address, unsigned int length)
      40  {
      41  	SHASH_DESC_ON_STACK(shash, tfm);
      42  	unsigned int *ctx = (unsigned int *)shash_desc_ctx(shash);
      43  	int err;
      44  
      45  	shash->tfm = tfm;
      46  	shash->flags = 0;
      47  	*ctx = crc;
      48  
      49  	err = crypto_shash_update(shash, address, length);
      50  
      51  	return *ctx;
      52  }
      53  /* { dg-final { scan-assembler "ld\[ \t\]*\\\[%\[a-z0-9\]*\\+\[0-9\]*\\\], %i0\n\[^\n\]*return\[ \t\]*%i7\\+8" } } */