vect_float is true for arm*-*-* targets, but the support is only
available when -funsafe-math-optimizations is on. This caused
failures in two tests that disable fast-math.
The easiest fix seemed to be to add a new target selector for
"vect_float without special options".
2018-01-23 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR testsuite/83888
* doc/sourcebuild.texi (vect_float): Say that the selector
only describes the situation when -funsafe-math-optimizations is on.
(vect_float_strict): Document.
gcc/testsuite/
PR testsuite/83888
* lib/target-supports.exp (check_effective_target_vect_float): Say
that the result only holds when -funsafe-math-optimizations is on.
(check_effective_target_vect_float_strict): New procedure.
* gcc.dg/vect/no-fast-math-vect16.c: Use vect_float_strict instead
of vect_float.
* gcc.dg/vect/vect-reduc-6.c: Likewise.
From-SVN: r256977
