cmd/compile: remove I-saw-a-register-pragma chatter

It is not multithreaded-compilation-safe, and also seems
to cause problems on the noopt-builder.

Change-Id: I52dbcd507d256990f1ec7c8040ec7b76595aae4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/298850
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

5 files changed, 0 insertions, 78 deletions

diff --git a/src/cmd/compile/internal/ssagen/ssa.go b/src/cmd/compile/internal/ssagen/ssa.go
index 2a281860af..881fdcc8f4 100644
--- a/src/cmd/compile/internal/ssagen/ssa.go
+++ b/src/cmd/compile/internal/ssagen/ssa.go
@@ -230,7 +230,6 @@ func abiForFunc(fn *ir.Func, abi0, abi1 *abi.ABIConfig) *abi.ABIConfig {
 			base.ErrorfAt(fn.Pos(), "Calls to //go:registerparams method %s won't work, remove the pragma from the declaration.", name)
 		}
 		a = abi1
-		base.WarnfAt(fn.Pos(), "declared function %v has register params", fn)
 	}
 	return a
 }
@@ -4850,9 +4849,6 @@ func (s *state) call(n *ir.CallExpr, k callKind, returnResultAddr bool) *ssa.Val
 			inRegistersImported := fn.Pragma()&ir.RegisterParams != 0
 			inRegistersSamePackage := fn.Func != nil && fn.Func.Pragma&ir.RegisterParams != 0
 			inRegisters = inRegistersImported || inRegistersSamePackage
-			if inRegisters {
-				s.f.Warnl(n.Pos(), "called function %v has register params", callee)
-			}
 			break
 		}
 		closure = s.expr(fn)
diff --git a/test/abi/regabipragma.dir/main.go b/test/abi/regabipragma.dir/main.go
deleted file mode 100644
index d663337a10..0000000000
--- a/test/abi/regabipragma.dir/main.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 main
-
-import (
-	"fmt"
-	"regabipragma.dir/tmp"
-)
-
-type S string
-
-//go:noinline
-func (s S) ff(t string) string {
-	return string(s) + " " + t
-}
-
-//go:noinline
-//go:registerparams
-func f(s,t string) string { // ERROR "Declared function f has register params"
-	return s + " " + t
-}
-
-func check(s string) {
-	if s != "Hello world!" {
-		fmt.Printf("FAIL, wanted 'Hello world!' but got '%s'\n", s)
-	}
-}
-
-func main() {
-	check(f("Hello", "world!"))   // ERROR "Called function ...f has register params"
-	check(tmp.F("Hello", "world!"))  // ERROR "Called function regabipragma.dir/tmp.F has register params"
-	check(S("Hello").ff("world!"))
-	check(tmp.S("Hello").FF("world!"))
-}
diff --git a/test/abi/regabipragma.dir/tmp/foo.go b/test/abi/regabipragma.dir/tmp/foo.go
deleted file mode 100644
index cff989bbcd..0000000000
--- a/test/abi/regabipragma.dir/tmp/foo.go
+++ /dev/null
@@ -1,19 +0,0 @@
-// 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 tmp
-
-
-type S string
-
-//go:noinline
-func (s S) FF(t string) string {
-        return string(s) + " " + t
-}
-
-//go:noinline
-//go:registerparams
-func F(s,t string) string {
-        return s + " " + t
-}
diff --git a/test/abi/regabipragma.go b/test/abi/regabipragma.go
deleted file mode 100644
index 070b3110d6..0000000000
--- a/test/abi/regabipragma.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// skip
-// runindir -gcflags=-c=1
-//go:build !windows
-// +build !windows
-
-// 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.
-
-// TODO(register args) Temporarily disabled now that register abi info is flowing halfway through the compiler.
-// TODO(register args) May delete or adapt this test once regabi is the default
-
-package ignore
diff --git a/test/abi/regabipragma.out b/test/abi/regabipragma.out
deleted file mode 100644
index 321b1adfcc..0000000000
--- a/test/abi/regabipragma.out
+++ /dev/null
@@ -1,6 +0,0 @@
-# regabipragma.dir/tmp
-tmp/foo.go:17:6: declared function F has register params
-# regabipragma.dir
-./main.go:21:6: declared function f has register params
-./main.go:32:9: called function f has register params
-./main.go:33:13: called function tmp.F has register params