diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa-vect/tree-ssa-vect-1.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa-vect/tree-ssa-vect-1.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-vect/tree-ssa-vect-1.c b/gcc/testsuite/gcc.dg/tree-ssa-vect/tree-ssa-vect-1.c new file mode 100644 index 00000000000..f1fae42e0ef --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa-vect/tree-ssa-vect-1.c @@ -0,0 +1,101 @@ +/* { dg-do compile { target powerpc*-*-* i?86-*-* } } */ +/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -maltivec" { target powerpc*-*-* } } */ +/* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -msse2" { target i?86-*-* } } */ + +#define N 16 + +void fbar (float *); +void ibar (int *); +void sbar (short *); + +/* multiple loops */ + +foo (int n) +{ + float a[N+1]; + float b[N]; + float c[N]; + float d[N]; + int ia[N]; + int ib[N]; + int ic[N]; + short sa[N]; + short sb[N]; + short sc[N]; + int i,j; + int diff = 0; + char cb[N]; + char cc[N]; + char image[N][N]; + char block[N][N]; + + /* Not vetorizable yet (cross-iteration cycle). */ + diff = 0; + for (i = 0; i < N; i++) { + diff += (cb[i] - cc[i]); + } + ibar (&diff); + + + /* Not vetorizable yet (outer-loop: not attempted. + inner-loop: cross iteration cycle; multi-dimensional arrays). */ + diff = 0; + for (i = 0; i < N; i++) { + for (i = 0; i < N; i++) { + diff += (image[i][j] - block[i][j]); + } + } + ibar (&diff); + + + /* Vectorizable. */ + for (i = 0; i < N; i++){ + a[i] = b[i]; + } + fbar (a); + + + /* Vectorizable. */ + for (i = 0; i < N; i++){ + a[i] = b[i] + c[i] + d[i]; + } + fbar (a); + + + /* Not vetorizable yet (access pattern). */ + for (i = 0; i < N/2; i++){ + a[i] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i]; + d[i] = b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i]; + } + fbar (a); + + + /* Vectorizable. */ + for (i = 0; i < N; i++){ + a[i] = b[i] + c[i]; + d[i] = b[i] + c[i]; + ia[i] = ib[i] + ic[i]; + } + ibar (ia); + fbar (a); + fbar (d); + + + /* Not vectorizable yet (two types with different nunits in vector). */ + for (i = 0; i < N; i++){ + ia[i] = ib[i] + ic[i]; + sa[i] = sb[i] + sc[i]; + } + ibar (ia); + sbar (sa); + + + /* Not vetorizable yet (too conservative dependence test). */ + for (i = 0; i < N; i++){ + a[i] = b[i] + c[i]; + a[i+1] = b[i] + c[i]; + } + fbar (a); +} + +/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect"} } */ |