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internal/abi: set register count constants to zero for regabi experiment

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This change sets the register count constants to zero for the
GOEXPERIMENT regabi because currently the users of it (i.e. reflect)
will be broken, since they expect Go functions that implement the new
ABI.

Change-Id: Id3e874c61821a36605eb4e1cccdee36a2759f303
Reviewed-on: https://go-review.googlesource.com/c/go/+/292649
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Michael Anthony Knyszek 2021-02-16 18:29:18 +00:00 committed by Michael Knyszek
parent d28aae26b0
commit 8cfbf34dd9
1 changed files with 7 additions and 3 deletions
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10
src/internal/abi/abi_amd64.go
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@ -9,12 +9,16 @@ package abi
const (
// See abi_generic.go.
// Currently these values are zero because whatever uses
// them will expect the register ABI, which isn't ready
// yet.
// RAX, RBX, RCX, RDI, RSI, R8, R9, R10, R11.
IntArgRegs = 9
IntArgRegs = 0 // 9
// X0 -> X14.
FloatArgRegs = 15
FloatArgRegs = 0 // 15
// We use SSE2 registers which support 64-bit float operations.
EffectiveFloatRegSize = 8
EffectiveFloatRegSize = 0 // 8
)