diff --git a/build/context.go b/build/context.go
index c1ed935..f0847a2 100644
--- a/build/context.go
+++ b/build/context.go
@@ -1,9 +1,8 @@
 //===- context.go - Build context utilities for llgo ----------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/cmd/cc-wrapper/main.go b/cmd/cc-wrapper/main.go
index 5a37522..b01ee63 100644
--- a/cmd/cc-wrapper/main.go
+++ b/cmd/cc-wrapper/main.go
@@ -1,9 +1,8 @@
 //===- main.go - Clang compiler wrapper for building libgo ----------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/cmd/cgo/zdefaultcc.go b/cmd/cgo/zdefaultcc.go
index 8db2769..87bdd46 100644
--- a/cmd/cgo/zdefaultcc.go
+++ b/cmd/cgo/zdefaultcc.go
@@ -1,9 +1,8 @@
 //===- zdefaultcc.go - default compiler locations -------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/cmd/gllgo/gllgo.go b/cmd/gllgo/gllgo.go
index 88a5be3..9147e39 100644
--- a/cmd/gllgo/gllgo.go
+++ b/cmd/gllgo/gllgo.go
@@ -1,9 +1,8 @@
 //===- gllgo.go - gccgo-like driver for llgo ------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/cmd/go/zdefaultcc.go.in b/cmd/go/zdefaultcc.go.in
index 2ca6c94..66d52d9 100644
--- a/cmd/go/zdefaultcc.go.in
+++ b/cmd/go/zdefaultcc.go.in
@@ -1,9 +1,8 @@
 //===- zdefaultcc.go - default compiler locations -------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/cmd/llgoi/llgoi.go b/cmd/llgoi/llgoi.go
index 4aa774d..39d9af6 100644
--- a/cmd/llgoi/llgoi.go
+++ b/cmd/llgoi/llgoi.go
@@ -1,9 +1,8 @@
 //===- llgoi.go - llgo-based Go REPL --------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/debug/debug.go b/debug/debug.go
index bd07d0a..561360a 100644
--- a/debug/debug.go
+++ b/debug/debug.go
@@ -1,9 +1,8 @@
 //===- debug.go - debug info builder --------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/driver/parser.go b/driver/parser.go
index 07600f4..94ae3fd 100644
--- a/driver/parser.go
+++ b/driver/parser.go
@@ -1,9 +1,8 @@
 //===- parser.go - parser wrapper -----------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/annotations.go b/irgen/annotations.go
index 4976a62..5bda7a1 100644
--- a/irgen/annotations.go
+++ b/irgen/annotations.go
@@ -1,9 +1,8 @@
 //===- annotations.go - annotation processor ------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/attribute.go b/irgen/attribute.go
index 82f264e..e986e5e 100644
--- a/irgen/attribute.go
+++ b/irgen/attribute.go
@@ -1,9 +1,8 @@
 //===- attribute.go - attribute processor ---------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/builtins.go b/irgen/builtins.go
index 64d1c6d..7a33ef0 100644
--- a/irgen/builtins.go
+++ b/irgen/builtins.go
@@ -1,9 +1,8 @@
 //===- builtins.go - IR generation for builtins ---------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/cabi.go b/irgen/cabi.go
index 610f63d..02def37 100644
--- a/irgen/cabi.go
+++ b/irgen/cabi.go
@@ -1,9 +1,8 @@
 //===- cabi.go - C ABI abstraction layer ----------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/call.go b/irgen/call.go
index 9f29ac6..e3874c3 100644
--- a/irgen/call.go
+++ b/irgen/call.go
@@ -1,9 +1,8 @@
 //===- call.go - IR generation for calls ----------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/channels.go b/irgen/channels.go
index c5cc322..5a4e2d5 100644
--- a/irgen/channels.go
+++ b/irgen/channels.go
@@ -1,9 +1,8 @@
 //===- channels.go - IR generation for channels ---------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/closures.go b/irgen/closures.go
index bc21dd3..0895ac2 100644
--- a/irgen/closures.go
+++ b/irgen/closures.go
@@ -1,9 +1,8 @@
 //===- closures.go - IR generation for closures ---------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/compiler.go b/irgen/compiler.go
index acb922e..69934df 100644
--- a/irgen/compiler.go
+++ b/irgen/compiler.go
@@ -1,9 +1,8 @@
 //===- compiler.go - IR generator entry point -----------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/errors.go b/irgen/errors.go
index a4e6dc6..01be69b 100644
--- a/irgen/errors.go
+++ b/irgen/errors.go
@@ -1,9 +1,8 @@
 //===- errors.go - IR generation for run-time panics ----------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/indirect.go b/irgen/indirect.go
index d01df25..5007429 100644
--- a/irgen/indirect.go
+++ b/irgen/indirect.go
@@ -1,9 +1,8 @@
 //===- indirect.go - IR generation for thunks -----------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/interfaces.go b/irgen/interfaces.go
index fba95ba..6ebaa55 100644
--- a/irgen/interfaces.go
+++ b/irgen/interfaces.go
@@ -1,9 +1,8 @@
 //===- interfaces.go - IR generation for interfaces -----------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/maps.go b/irgen/maps.go
index 6e15396..f729b07 100644
--- a/irgen/maps.go
+++ b/irgen/maps.go
@@ -1,9 +1,8 @@
 //===- maps.go - IR generation for maps -----------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/predicates.go b/irgen/predicates.go
index 2ef1336..52e9e2c 100644
--- a/irgen/predicates.go
+++ b/irgen/predicates.go
@@ -1,9 +1,8 @@
 //===- predicates.go - type predicates ------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/println.go b/irgen/println.go
index 2d4e42c..caeaff2 100644
--- a/irgen/println.go
+++ b/irgen/println.go
@@ -1,9 +1,8 @@
 //===- println.go - IR generation for print and println -------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/runtime.go b/irgen/runtime.go
index aa4b7d0..485a2d3 100644
--- a/irgen/runtime.go
+++ b/irgen/runtime.go
@@ -1,9 +1,8 @@
 //===- runtime.go - IR generation for runtime calls -----------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/slice.go b/irgen/slice.go
index 49cde63..f987155 100644
--- a/irgen/slice.go
+++ b/irgen/slice.go
@@ -1,9 +1,8 @@
 //===- slice.go - IR generation for slices --------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/ssa.go b/irgen/ssa.go
index f1c9d04..ed45e2c 100644
--- a/irgen/ssa.go
+++ b/irgen/ssa.go
@@ -1,9 +1,8 @@
 //===- ssa.go - IR generation from go/ssa ---------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/strings.go b/irgen/strings.go
index 5762485..6d8e299 100644
--- a/irgen/strings.go
+++ b/irgen/strings.go
@@ -1,9 +1,8 @@
 //===- strings.go - IR generation for string ops --------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/switches.go b/irgen/switches.go
index e4bf9a6..a2b46b7 100644
--- a/irgen/switches.go
+++ b/irgen/switches.go
@@ -1,9 +1,8 @@
 //===- switches.go - misc utils -------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/targets.go b/irgen/targets.go
index 2f4fccb..4460cef 100644
--- a/irgen/targets.go
+++ b/irgen/targets.go
@@ -1,9 +1,8 @@
 //===- targets.go - target data -------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/typemap.go b/irgen/typemap.go
index 7da752e..c2a5c7a 100644
--- a/irgen/typemap.go
+++ b/irgen/typemap.go
@@ -1,9 +1,8 @@
 //===- typemap.go - type and type descriptor mapping ----------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/types.go b/irgen/types.go
index acbbdfc..ed1aac2 100644
--- a/irgen/types.go
+++ b/irgen/types.go
@@ -1,9 +1,8 @@
 //===- types.go - convenience functions for types -------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/utils.go b/irgen/utils.go
index 37cecd7..2efdc84 100644
--- a/irgen/utils.go
+++ b/irgen/utils.go
@@ -1,9 +1,8 @@
 //===- utils.go - misc utils ----------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/value.go b/irgen/value.go
index e6bc589..8b70e01 100644
--- a/irgen/value.go
+++ b/irgen/value.go
@@ -1,9 +1,8 @@
 //===- value.go - govalue and operations ----------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
diff --git a/irgen/version.go b/irgen/version.go
index c59eb6f..a3a1d68 100644
--- a/irgen/version.go
+++ b/irgen/version.go
@@ -1,9 +1,8 @@
 //===- version.go - version info ------------------------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //