| /* { dg-do compile } */ |
| /* { dg-require-effective-target supports_stack_clash_protection } */ |
| /* { dg-options "-O3 -fopenmp-simd -fstack-clash-protection --param stack-clash-protection-guard-size=16" } */ |
| |
| #include <stdint.h> |
| |
| #define N 50 |
| #define S 2 * 64 * 1024 |
| |
| /* Invoke X (P##n) for n in [0, 9]. */ |
| #define REPEAT8(X, P) \ |
| X (P##0) X (P##1) X (P##2) X (P##3) X (P##4) X (P##5) X (P##6) X (P##7) \ |
| X (P##8) X (P##9) |
| |
| /* Invoke X (n) for all n in [0, 49]. */ |
| #define REPEAT50(X) \ |
| REPEAT8 (X, ) REPEAT8 (X, 1) REPEAT8 (X, 2) REPEAT8 (X, 3) REPEAT8 (X, 4) |
| |
| /* Try to force some spilling. */ |
| #define DECLARE(N) int src##N = src[N * 4]; |
| #define INC(N) dest[i] += src##N; |
| |
| #define TEST_LOOP(NAME, TYPE) \ |
| void __attribute__ ((noinline, noclone, simd)) \ |
| NAME (TYPE *restrict dest, TYPE *restrict src) \ |
| { \ |
| REPEAT50 (DECLARE); \ |
| volatile char foo[S]; \ |
| foo[S-1]=1; \ |
| for (int i = 0; i < N; i++) \ |
| { \ |
| REPEAT50 (INC); \ |
| } \ |
| } |
| |
| #define TEST(NAME) \ |
| TEST_LOOP (NAME##_i32, int32_t) \ |
| TEST_LOOP (NAME##_i64, int64_t) \ |
| TEST_LOOP (NAME##_f32, float) \ |
| TEST_LOOP (NAME##_f64, double) |
| |
| TEST (test) |
| |
| /* Check the vectorized loop for stack clash probing. */ |
| |
| /* { dg-final { scan-assembler-times {str\s+xzr, \[sp, 0\]} 4 } } */ |
| /* { dg-final { scan-assembler-times {cmp\s+x[0-9]+, 61440} 4 } } */ |
| /* { dg-final { scan-assembler-times {sub\s+x[0-9]+, x[0-9]+, 61440} 4 } } */ |
