// asmcheck -gcflags=-clobberdeadreg

//go:build amd64

// 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.

package codegen

type S struct {
	a, b, c, d, e, f int
}

func F(a, b, c int, d S) {
	// -2401018187971961171 is 0xdeaddeaddeaddead

func TestClobberDead(t *testing.T) {
	// Test that clobberdead mode generates correct program.
	runHello(t, "-clobberdead")
}

func TestClobberDeadReg(t *testing.T) {
	// Test that clobberdeadreg mode generates correct program.
	runHello(t, "-clobberdeadreg")
}

func runHello(t *testing.T, flag string) {
	if testing.Short() {
		// This test rebuilds the runtime with a special flag, which
		// takes a while.

						canLiveOnStack.add(arg.ID)
					}
				}
			}
		}
	}

	// The clobberdeadreg experiment inserts code to clobber dead registers
	// at call sites.
	// Ignore huge functions to avoid doing too much work.
	if base.Flag.ClobberDeadReg && len(s.f.Blocks) <= 10000 {
		// TODO: honor GOCLOBBERDEADHASH, or maybe GOSSAHASH.
		s.doClobber = true
	}
}