modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr28982b.c (about) 1 /* { dg-require-stack-size "0x80100" } */ 2 3 /* Like pr28982a.c, but with the spill slots outside the range of 4 a single sp-based load on ARM. This test tests for cases where 5 the addresses in the base and index reloads require further reloads. */ 6 #define NITER 4 7 #define NVARS 20 8 #define MULTI(X) \ 9 X( 0), X( 1), X( 2), X( 3), X( 4), X( 5), X( 6), X( 7), X( 8), X( 9), \ 10 X(10), X(11), X(12), X(13), X(14), X(15), X(16), X(17), X(18), X(19) 11 12 #define DECLAREI(INDEX) inc##INDEX = incs[INDEX] 13 #define DECLAREF(INDEX) *ptr##INDEX = ptrs[INDEX], result##INDEX = 0 14 #define LOOP(INDEX) result##INDEX += *ptr##INDEX, ptr##INDEX += inc##INDEX 15 #define COPYOUT(INDEX) results[INDEX] = result##INDEX 16 17 float *ptrs[NVARS]; 18 float results[NVARS]; 19 int incs[NVARS]; 20 21 struct big { int i[0x10000]; }; 22 void __attribute__((noinline)) 23 bar (struct big b) 24 { 25 incs[0] += b.i[0]; 26 } 27 28 void __attribute__((noinline)) 29 foo (int n) 30 { 31 struct big b = {}; 32 int MULTI (DECLAREI); 33 float MULTI (DECLAREF); 34 while (n--) 35 MULTI (LOOP); 36 MULTI (COPYOUT); 37 bar (b); 38 } 39 40 float input[NITER * NVARS]; 41 42 int 43 main (void) 44 { 45 int i; 46 47 for (i = 0; i < NVARS; i++) 48 ptrs[i] = input + i, incs[i] = i; 49 for (i = 0; i < NITER * NVARS; i++) 50 input[i] = i; 51 foo (NITER); 52 for (i = 0; i < NVARS; i++) 53 if (results[i] != i * NITER * (NITER + 1) / 2) 54 return 1; 55 return 0; 56 }