Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/vect/vect-35.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-require-effective-target vect_int } */ #include <stdarg.h> #include "tree-vect.h" #define N 16 __attribute__ ((noinline)) int main1 () { union { unsigned char a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))); unsigned char b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))); } s; int i; /* Initialization. */ for (i = 0; i < N; i++) { s.b[i] = i; } /* Dependence analysis fails cause s.a and s.b may overlap. Try to use runtime aliasing test with versioning, and later versioning/vectorization are skipped because the overlap is proven at compilation time. */ for (i = 0; i < N; i++) { s.a[i] = s.b[i] + 1; } /* check results: */ for (i = 0; i < N; i++) { if (s.a[i] != i + 1) abort (); } return 0; } int main (void) { check_vect (); return main1 (); } /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { ia64-*-* sparc*-*-* } } } } */ /* { dg-final { scan-tree-dump "can't determine dependence between" "vect" } } */