package main

import "fmt"

type i5f5 struct {
	a, b          int16
	c, d, e       int32
	r, s, t, u, v float32
}

//go:noinline
func spills(_ *float32) {

}

//go:registerparams
//go:noinline
func F(x i5f5) i5f5 {
	y := x.v
	spills(&y)
	x.r = y
	return x
}

func main() {
	x := i5f5{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
	y := x
	z := F(x)

type i4 struct {
	a, b, c, d int
}

//go:noinline
func spills(px *i4) {
}

//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
	i := i4{ab*bc + da, cd*ad + cb, ba*cb + ad, dc*da + bc}
	spills(&i)
	return i
}

func main() {
	x := i4{1, 2, 3, 4}

// Notes:
// - 386 fails due to spilling a register
// amd64:"TEXT\t.*, [$]0-"
// arm:"TEXT\t.*, [$]0-" (spills return address)
// arm64:"TEXT\t.*, [$]0-"
// ppc64x:"TEXT\t.*, [$]0-"
// s390x:"TEXT\t.*, [$]0-"
// Note: that 386 currently has to spill a register.
func KeepWanted(t *T) {
	*t = T{A: t.A, B: t.B, C: t.C, D: t.D}
}

	)
	flagalloc(f.f)
	regalloc(f.f)
	checkFunc(f.f)
	// There should be a spill in loop1, and nowhere else.
	// TODO: resurrect moving spills out of loops? We could put spills at the start of both exit1 and exit2.
	if numSpills(f.blocks["loop1"]) != 1 {
		t.Errorf("spill missing from loop1")
	}
	if numSpills(f.blocks["loop2"]) != 0 {
		t.Errorf("spill present in loop2")
	}
	if numSpills(f.blocks["exit1"]) != 0 {

//go:build loong64

package runtime

// Called from assembly only; declared for go vet.
func load_g()
func save_g()

// Used by reflectcall and the reflect package.
//
// Spills/loads arguments in registers to/from an internal/abi.RegArgs
// respectively. Does not follow the Go ABI.
func spillArgs()
func unspillArgs()

// getfp returns the frame pointer register of its caller or 0 if not implemented.

package runtime

import "unsafe"

// Called from assembly only; declared for go vet.
func load_g()
func save_g()
func reginit()

//go:noescape
func asmcgocall_no_g(fn, arg unsafe.Pointer)

// Spills/loads arguments in registers to/from an internal/abi.RegArgs
// respectively. Does not follow the Go ABI.
func spillArgs()
func unspillArgs()

// getfp returns the frame pointer register of its caller or 0 if not implemented.

func load_g()
func save_g()

//go:noescape
func asmcgocall_no_g(fn, arg unsafe.Pointer)

func emptyfunc()

// Used by reflectcall and the reflect package.
//
// Spills/loads arguments in registers to/from an internal/abi.RegArgs
// respectively. Does not follow the Go ABI.
func spillArgs()
func unspillArgs()

// getfp returns the frame pointer register of its caller or 0 if not implemented.

import "unsafe"

// Called from assembly only; declared for go vet.
func load_g()
func save_g()

//go:noescape
func asmcgocall_no_g(fn, arg unsafe.Pointer)

// Used by reflectcall and the reflect package.
//
// Spills/loads arguments in registers to/from an internal/abi.RegArgs
// respectively. Does not follow the Go ABI.
func spillArgs()
func unspillArgs()

// getfp returns the frame pointer register of its caller or 0 if not implemented.

func retpolineR14()
func retpolineR15()

//go:noescape
func asmcgocall_no_g(fn, arg unsafe.Pointer)

//go:systemstack
func asmcgocall_landingpad()

// Used by reflectcall and the reflect package.
//
// Spills/loads arguments in registers to/from an internal/abi.RegArgs
// respectively. Does not follow the Go ABI.
func spillArgs()
func unspillArgs()

// getfp returns the frame pointer register of its caller or 0 if not implemented.

	sink = &result
	r := ""
	if len(s) <= len(t) {
		r = "OKAY! "
		X()
	}
	return r + result
}

//go:registerparams
//go:noinline
func K(s, t string) (result string) { // result spills
	result = "Aloha! " + s + " " + t
	r := ""
	if len(s) <= len(t) {
		r = "OKAY! "
		X()
	}
	return r + result
}

func main() {
	a, b, c := 1, 4, 16
	x := F(&a, &b, &c)
	fmt.Printf("x = %d\n", x)