| // run | |
| //go:build !wasm | |
| // Copyright 2021 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // wasm is excluded because the compiler chatter about register abi pragma ends up | |
| // on stdout, and causes the expected output to not match. | |
| package main | |
| import "fmt" | |
| type i4 struct { | |
| a, b, c, d int | |
| } | |
| //go:registerparams | |
| //go:noinline | |
| func F(x i4) i4 { | |
| ab := x.a + x.b | |
| bc := x.b + x.c | |
| cd := x.c + x.d | |
| ad := x.a + x.d | |
| ba := x.a - x.b | |
| cb := x.b - x.c | |
| dc := x.c - x.d | |
| da := x.a - x.d | |
| return i4{ab*bc + da, cd*ad + cb, ba*cb + ad, dc*da + bc} | |
| } | |
| func main() { | |
| x := i4{1, 2, 3, 4} | |
| y := x | |
| z := F(x) | |
| if (i4{12, 34, 6, 8}) != z { | |
| fmt.Printf("y=%v, z=%v\n", y, z) | |
| } | |
| } | |