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| author | Austin Clements <austin@google.com> | 2021-02-23 21:22:20 -0500 |
|---|---|---|
| committer | Austin Clements <austin@google.com> | 2021-02-24 19:26:11 +0000 |
| commit | 3deb528199383b39425fc99f3741a6ade6ab5a6b (patch) | |
| tree | 302e9aaa56d212831316f25132f9affed544f4f7 | |
| parent | 478277f81283b9e941c4fdadc253797e6d035971 (diff) | |
| download | go-3deb528199383b39425fc99f3741a6ade6ab5a6b.tar.gz go-3deb528199383b39425fc99f3741a6ade6ab5a6b.zip | |
cmd/compile/internal-abi: update internal ABI spec for g register
We've already implemented dedicating R14 as the G register on amd64,
so remove the TODO saying we might want to hold off on this.
For #40724.
Change-Id: I45b24ced03cac862127b53f5e9a4b4bcf6b1f86c
Reviewed-on: https://go-review.googlesource.com/c/go/+/295790
Trust: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
| -rw-r--r-- | src/cmd/compile/internal-abi.md | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/src/cmd/compile/internal-abi.md b/src/cmd/compile/internal-abi.md index 3a3509d8c2..0e5d8ce260 100644 --- a/src/cmd/compile/internal-abi.md +++ b/src/cmd/compile/internal-abi.md @@ -402,9 +402,6 @@ Special-purpose registers are as follows: | R15 | GOT reference temporary | Fixed if dynlink | | X15 | Zero value | Fixed | -TODO: We may start with the existing TLS-based g and move to R14 -later. - *Rationale*: These register meanings are compatible with Go’s stack-based calling convention except for R14 and X15, which will have to be restored on transitions from ABI0 code to ABIInternal code. |