vendor/llvm/llvm-trunk-r366426

1 files changed, 6 insertions, 9 deletions

diff --git a/lib/CodeGen/IndirectBrExpandPass.cpp b/lib/CodeGen/IndirectBrExpandPass.cpp
index 7b05ebf820fd..7ac093ba4a71 100644
--- a/lib/CodeGen/IndirectBrExpandPass.cpp
+++ b/lib/CodeGen/IndirectBrExpandPass.cpp
@@ -1,9 +1,8 @@
 //===- IndirectBrExpandPass.cpp - Expand indirectbr to switch -------------===//
 //
-//                     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
 //
 //===----------------------------------------------------------------------===//
 /// \file
@@ -149,11 +148,9 @@ bool IndirectBrExpandPass::runOnFunction(Function &F) {
     ConstantInt *BBIndexC = ConstantInt::get(ITy, BBIndex);
 
     // Now rewrite the blockaddress to an integer constant based on the index.
-    // FIXME: We could potentially preserve the uses as arguments to inline asm.
-    // This would allow some uses such as diagnostic information in crashes to
-    // have higher quality even when this transform is enabled, but would break
-    // users that round-trip blockaddresses through inline assembly and then
-    // back into an indirectbr.
+    // FIXME: This part doesn't properly recognize other uses of blockaddress
+    // expressions, for instance, where they are used to pass labels to
+    // asm-goto. This part of the pass needs a rework.
     BA->replaceAllUsesWith(ConstantExpr::getIntToPtr(BBIndexC, BA->getType()));
   }