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| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/bb-slp-pr81635.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-pr81635.c b/gcc/testsuite/gcc.dg/vect/bb-slp-pr81635.c new file mode 100644 index 00000000000..357cb429e66 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/bb-slp-pr81635.c @@ -0,0 +1,57 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-fno-tree-loop-vectorize" } */ +/* { dg-require-effective-target vect_unpack } */ + +double p[1000]; +double q[1000]; + +void +f1 (void) +{ + for (unsigned int i = 0; i < 1000; i += 4) + { + double a = q[i] + p[i]; + double b = q[i + 1] + p[i + 1]; + q[i] = a; + q[i + 1] = b; + } +} + +void +f2 (void) +{ + for (unsigned int i = 0; i < 500; i += 6) + for (unsigned int j = 0; j < 500; j += 4) + { + double a = q[j] + p[i]; + double b = q[j + 1] + p[i + 1]; + q[i] = a; + q[i + 1] = b; + } +} + +void +f3 (void) +{ + for (unsigned int i = 2; i < 1000; i += 4) + { + double a = q[i - 2] + p[i - 2]; + double b = q[i - 1] + p[i - 1]; + q[i - 2] = a; + q[i - 1] = b; + } +} + +void +f4 (unsigned int n) +{ + for (unsigned int i = 0; i < n; i += 4) + { + double a = q[i] + p[i]; + double b = q[i + 1] + p[i + 1]; + q[i] = a; + q[i + 1] = b; + } +} + +/* { dg-final { scan-tree-dump-times "basic block vectorized" 4 "slp1" } } */ |