diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/riscv/pr105666.c')
-rw-r--r-- | gcc/testsuite/gcc.target/riscv/pr105666.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/riscv/pr105666.c b/gcc/testsuite/gcc.target/riscv/pr105666.c new file mode 100644 index 0000000..904f3bc --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/pr105666.c @@ -0,0 +1,55 @@ +/* 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-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" } } */ |