cmd/compile: fix transform of OEQ/ONE when one arg is a type param

At this point in stenciling, we have shape types, not raw type parameters.
The code was correct in the other part of this function.

Update #51522

Change-Id: Ife495160a2be5f6af5400363c3efb68dda518b5f
Reviewed-on: https://go-review.googlesource.com/c/go/+/391475
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/test/typeparam/issue51522a.go b/test/typeparam/issue51522a.go
new file mode 100644
index 0000000000..3f854080a7
--- /dev/null
+++ b/test/typeparam/issue51522a.go
@@ -0,0 +1,42 @@
+// run
+
+// Copyright 2022 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
+
+
+func f[T comparable](i any) {
+	var t T
+
+	if i != t {
+		println("FAIL: if i != t")
+	}
+}
+
+type myint int
+
+func (m myint) foo() {
+}
+
+type fooer interface {
+	foo()
+}
+
+type comparableFoo interface {
+	comparable
+	foo()
+}
+
+func g[T comparableFoo](i fooer) {
+	var t T
+
+	if i != t {
+		println("FAIL: if i != t")
+	}
+}
+
+func main() {
+	f[int](int(0))
+	g[myint](myint(0))
+}