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/* Shamelessly plugged off gcc/testsuite/gcc.c-torture/execute/pr28982a.c.
The idea is to induce high register pressure for both int/fp registers
so that they spill. By default FMV instructions would be used to stash
int reg to a fp reg (and vice-versa) but that could be costlier than
spilling to stack. */
/* { dg-do compile } */
/* { dg-require-effective-target hard_float } */
/* { dg-options "-march=rv64g -ffast-math" } */
#define NITER 4
#define NVARS 20
#define MULTI(X) \
X( 0), X( 1), X( 2), X( 3), X( 4), X( 5), X( 6), X( 7), X( 8), X( 9), \
X(10), X(11), X(12), X(13), X(14), X(15), X(16), X(17), X(18), X(19)
#define DECLAREI(INDEX) inc##INDEX = incs[INDEX]
#define DECLAREF(INDEX) *ptr##INDEX = ptrs[INDEX], result##INDEX = 5
#define LOOP(INDEX) result##INDEX += result##INDEX * (*ptr##INDEX), ptr##INDEX += inc##INDEX
#define COPYOUT(INDEX) results[INDEX] = result##INDEX
double *ptrs[NVARS];
double results[NVARS];
int incs[NVARS];
void __attribute__((noinline))
foo (int n)
{
int MULTI (DECLAREI);
double MULTI (DECLAREF);
while (n--)
MULTI (LOOP);
MULTI (COPYOUT);
}
double input[NITER * NVARS];
int
main (void)
{
int i;
for (i = 0; i < NVARS; i++)
ptrs[i] = input + i, incs[i] = i;
for (i = 0; i < NITER * NVARS; i++)
input[i] = i;
foo (NITER);
for (i = 0; i < NVARS; i++)
if (results[i] != i * NITER * (NITER + 1) / 2)
return 1;
return 0;
}
/* { dg-final { scan-assembler-not "\tfmv\\.d\\.x\t" } } */
/* { dg-final { scan-assembler-not "\tfmv\\.x\\.d\t" } } */
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