| commit | 818c5f6fbe136286b7c76f38a11929a60eb327bc | [log] [tgz] |
|---|---|---|
| author | Cherry Zhang <cherryyz@google.com> | Fri Jun 28 09:30:36 2019 -0400 |
| committer | Carlos Amedee <carlos@golang.org> | Mon Aug 02 22:28:48 2021 +0000 |
| tree | 61b90959ec1b8d599716197cbb88ae3f88afcce3 | |
| parent | b81d75fb42f3add3fefe7cf8fa220f88895920e5 [diff] |
[release-branch.go1.15] cmd/compile: mark R16, R17 clobbered for non-standard calls on ARM64 On ARM64, (external) linker generated trampoline may clobber R16 and R17. In CL 183842 we change Duff's devices not to use those registers. However, this is not enough. The register allocator also needs to know that these registers may be clobbered in any calls that don't follow the standard Go calling convention. This include Duff's devices and the write barrier. Fixes #46927. Updates #32773. Change-Id: Ia52a891d9bbb8515c927617dd53aee5af5bd9aa4 Reviewed-on: https://go-review.googlesource.com/c/go/+/184437 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Meng Zhuo <mzh@golangcn.org> Reviewed-by: Keith Randall <khr@golang.org> Trust: Meng Zhuo <mzh@golangcn.org> (cherry picked from commit 11b4aee05bfe83513cf08f83091e5aef8b33e766) Reviewed-on: https://go-review.googlesource.com/c/go/+/331030 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com>
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