Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/vect/vect-avg-15.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
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/* { dg-additional-options "-O3" } */ /* { dg-require-effective-target vect_int } */ #include "tree-vect.h" #define N 80 void __attribute__ ((noipa)) f (signed char *restrict a, signed char *restrict b, signed char *restrict c, int n, int step) { for (int j = 0; j < n; ++j) { for (int i = 0; i < 16; ++i) a[i] = (b[i] + c[i]) >> 1; a += step; b += step; c += step; } } #define BASE1 -126 #define BASE2 -42 signed char a[N], b[N], c[N]; int main (void) { check_vect (); for (int i = 0; i < N; ++i) { a[i] = i; b[i] = BASE1 + i * 3; c[i] = BASE2 + i * 2; asm volatile ("" ::: "memory"); } f (a, b, c, N / 20, 20); for (int i = 0; i < N; ++i) { int d = (BASE1 + BASE2 + i * 5) >> 1; if (a[i] != (i % 20 < 16 ? d : i)) __builtin_abort (); } return 0; } /* { dg-final { scan-tree-dump "vect_recog_average_pattern: detected" "vect" } } */ /* { dg-final { scan-tree-dump {\.AVG_FLOOR} "vect" { target vect_avg_qi } } } */ /* { dg-final { scan-tree-dump "Loop contains only SLP stmts" "vect" { target vect_avg_qi } } } */ /* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" { target vect_avg_qi } } } */