go/src/cmd/compile/internal/ssa/fmahash_test.go

// TestFmaHash checks that the hash-test machinery works properly for a single case.
// It also runs ssa/check and gccheck to be sure that those are checked at least a
// little in each run.bash.  It does not check or run the generated code.
// The test file is however a useful example of fused-vs-cascaded multiply-add.
func TestFmaHash(t *testing.T) { … }