diff options
Diffstat (limited to 'test/codegen/clobberdeadreg.go')
| -rw-r--r-- | test/codegen/clobberdeadreg.go | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/codegen/clobberdeadreg.go b/test/codegen/clobberdeadreg.go new file mode 100644 index 0000000..2a93c41 --- /dev/null +++ b/test/codegen/clobberdeadreg.go @@ -0,0 +1,33 @@ +// asmcheck -gcflags=-clobberdeadreg + +// +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 + // amd64:`MOVQ\t\$-2401018187971961171, AX`, `MOVQ\t\$-2401018187971961171, BX`, `MOVQ\t\$-2401018187971961171, CX` + // amd64:`MOVQ\t\$-2401018187971961171, DX`, `MOVQ\t\$-2401018187971961171, SI`, `MOVQ\t\$-2401018187971961171, DI` + // amd64:`MOVQ\t\$-2401018187971961171, R8`, `MOVQ\t\$-2401018187971961171, R9`, `MOVQ\t\$-2401018187971961171, R10` + // amd64:`MOVQ\t\$-2401018187971961171, R11`, `MOVQ\t\$-2401018187971961171, R12`, `MOVQ\t\$-2401018187971961171, R13` + // amd64:-`MOVQ\t\$-2401018187971961171, BP` // frame pointer is not clobbered + StackArgsCall([10]int{a, b, c}) + // amd64:`MOVQ\t\$-2401018187971961171, R12`, `MOVQ\t\$-2401018187971961171, R13`, `MOVQ\t\$-2401018187971961171, DX` + // amd64:-`MOVQ\t\$-2401018187971961171, AX`, -`MOVQ\t\$-2401018187971961171, R11` // register args are not clobbered + RegArgsCall(a, b, c, d) +} + +//go:noinline +func StackArgsCall([10]int) {} + +//go:noinline +//go:registerparams +func RegArgsCall(int, int, int, S) {} |