Viewing file:  atomic-inst-swp.c (1.36 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2 -march=armv8-a+lse" } */
/* Test ARMv8.1-A SWP instruction. */
#include "atomic-inst-ops.inc"
#define TEST TEST_ONE
#define SWAP_ATOMIC(FN, TY, MODEL) \
TY FNNAME (FN, TY) (TY* val, TY foo) \
{ \
return __atomic_exchange_n (val, foo, MODEL); \
}
#define SWAP_ATOMIC_NORETURN(FN, TY, MODEL) \
void FNNAME (FN, TY) (TY* val, TY* foo, TY* bar) \
{ \
__atomic_exchange (val, foo, bar, MODEL); \
}
TEST (swap_atomic, SWAP_ATOMIC)
TEST (swap_atomic_noreturn, SWAP_ATOMIC_NORETURN)
/* { dg-final { scan-assembler-times "swpb\t" 4} } */
/* { dg-final { scan-assembler-times "swpab\t" 8} } */
/* { dg-final { scan-assembler-times "swplb\t" 4} } */
/* { dg-final { scan-assembler-times "swpalb\t" 8} } */
/* { dg-final { scan-assembler-times "swph\t" 4} } */
/* { dg-final { scan-assembler-times "swpah\t" 8} } */
/* { dg-final { scan-assembler-times "swplh\t" 4} } */
/* { dg-final { scan-assembler-times "swpalh\t" 8} } */
/* { dg-final { scan-assembler-times "swp\t" 8} } */
/* { dg-final { scan-assembler-times "swpa\t" 16} } */
/* { dg-final { scan-assembler-times "swpl\t" 8} } */
/* { dg-final { scan-assembler-times "swpal\t" 16} } */
/* { dg-final { scan-assembler-not "ldaxr\t" } } */
/* { dg-final { scan-assembler-not "stlxr\t" } } */
/* { dg-final { scan-assembler-not "dmb" } } */
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