gcc/testsuite/gcc.target/sparc/sparc-ret-3.c

   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\[ \t\]*\\\[%i5\\+8\\\], %i0\n\[^\n\]*return\[ \t\]*%i7\\+8" } } */