From: Cherry Mui <cherryyz@google.com>
Date: Tue, 25 May 2021 23:19:08 +0000 (-0400)
Subject: [dev.typeparams] cmd/compile: enable register args on ARM64
X-Git-Tag: go1.18beta1~1818^2^2~477
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=963f33b03b;p=gostls13.git

[dev.typeparams] cmd/compile: enable register args on ARM64

Now it will be used for functions marked go:registerparams.

test/abi tests are passing with it.

Change-Id: I5af37ae6b79a1064832a42c7ef5f2cc0b5b6a342
Reviewed-on: https://go-review.googlesource.com/c/go/+/322854
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
---

diff --git a/src/cmd/compile/internal/ssa/config.go b/src/cmd/compile/internal/ssa/config.go
index 07d8b6e532..7d680304c9 100644
--- a/src/cmd/compile/internal/ssa/config.go
+++ b/src/cmd/compile/internal/ssa/config.go
@@ -228,10 +228,8 @@ func NewConfig(arch string, types Types, ctxt *obj.Link, optimize bool) *Config
 		c.registers = registersARM64[:]
 		c.gpRegMask = gpRegMaskARM64
 		c.fpRegMask = fpRegMaskARM64
-		// XXX commented out for now. Uncomment it will enable register args for
-		// go:registerparams functions, which isn't fully working, so tests fail.
-		//c.intParamRegs = paramIntRegARM64
-		//c.floatParamRegs = paramFloatRegARM64
+		c.intParamRegs = paramIntRegARM64
+		c.floatParamRegs = paramFloatRegARM64
 		c.FPReg = framepointerRegARM64
 		c.LinkReg = linkRegARM64
 		c.hasGReg = true