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| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr77478.c | 22 |
2 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index cefbca9..20680cb 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-09-27 Richard Biener <rguenther@suse.de> + + PR tree-optimization/77478 + * gcc.dg/torture/pr77478.c: New testcase. + 2016-09-27 Martin Liska <mliska@suse.cz> PR gcov-profile/7970 diff --git a/gcc/testsuite/gcc.dg/torture/pr77478.c b/gcc/testsuite/gcc.dg/torture/pr77478.c new file mode 100644 index 0000000..b5965bf --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr77478.c @@ -0,0 +1,22 @@ +/* { dg-do run } */ +/* { dg-additional-options "-ffast-math" } */ + +static const float A[10] = {1}; + +float +foo(float *f, int n) +{ + int i, j; + float a = 0, b = 0; + for (i = n/2; i < n; i++) + a += f[i]*.1f; + for (i = n/2, j = 0; i < n; i++, j++) + b += f[i]*A[j]+a*A[j]; + return b; +} + +int main() +{ + float a[21] = {0}; + return foo(a+1, 20) + foo(a, 20); +} |