[gcc r12-6784] runtime: build panic32.go on amd64p32

[gcc r12-6784] runtime: build panic32.go on amd64p32

[Ian Lance Taylor]

https://gcc.gnu.org/g:39cd3cce52523bc807ff001a2c1290d28ef6f24e

commit r12-6784-g39cd3cce52523bc807ff001a2c1290d28ef6f24e
Author: Ian Lance Taylor <iant@golang.org>
Date:   Thu Jan 20 18:27:27 2022 -0800

    runtime: build panic32.go on amd64p32
    
    Fixes https://gcc.gnu.org/PR104149
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/380054

Diff:
---
 gcc/go/gofrontend/MERGE     | 2 +-
 libgo/go/runtime/panic32.go | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 9cc6a1c63c6..a42d88d25c4 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-799e9807c36fc661b14dfff136369556f09a5ebf
+7d510bf5fcec9b0ccc0282f4193a80c0a164df63
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/libgo/go/runtime/panic32.go b/libgo/go/runtime/panic32.go
index a2bf7e8fa2a..11d2a8450d9 100644
--- a/libgo/go/runtime/panic32.go
+++ b/libgo/go/runtime/panic32.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build 386 || arm || mips || mipsle || armbe || m68k || nios2 || ppc || riscv || s390 || sh || shbe || sparc
-// +build 386 arm mips mipsle armbe m68k nios2 ppc riscv s390 sh shbe sparc
+//go:build 386 || amd64p32 || arm || mips || mipsle || armbe || m68k || nios2 || ppc || riscv || s390 || sh || shbe || sparc
+// +build 386 amd64p32 arm mips mipsle armbe m68k nios2 ppc riscv s390 sh shbe sparc
 
 package runtime