all: use "reports whether" consistently instead of "returns whether"

Follow-up for CL 147037 and after Brad noticed the "returns whether"
pattern during the review of CL 150621.

Go documentation style for boolean funcs is to say:

    // Foo reports whether ...
    func Foo() bool

(rather than "returns whether")

Created with:

    $ perl -i -npe 's/returns whether/reports whether/' $(git grep -l "returns whether" | grep -v vendor)

Change-Id: I15fe9ff99180ad97750cd05a10eceafdb12dc0b4
Reviewed-on: https://go-review.googlesource.com/c/150918
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cmd/compile/internal/ssa/magic.go b/src/cmd/compile/internal/ssa/magic.go
index 0457e90b53..12044111ea 100644
--- a/src/cmd/compile/internal/ssa/magic.go
+++ b/src/cmd/compile/internal/ssa/magic.go
@@ -83,7 +83,7 @@ import "math/big"
 //                   a+b has n+1 bits in it.  Nevertheless, can be done
 //                   in 2 instructions on x86.)
 
-// umagicOK returns whether we should strength reduce a n-bit divide by c.
+// umagicOK reports whether we should strength reduce a n-bit divide by c.
 func umagicOK(n uint, c int64) bool {
 	// Convert from ConstX auxint values to the real uint64 constant they represent.
 	d := uint64(c) << (64 - n) >> (64 - n)