[llvm] 7e2cf26 - [ADT] Clarify llvm::bit_cast implementation comment

[Joe Loser via llvm-commits]

Author: Joe Loser
Date: 2022-08-21T18:13:41-06:00
New Revision: 7e2cf2679ebc177c3264c171d8d7a91442161f5c

URL: https://github.com/llvm/llvm-project/commit/7e2cf2679ebc177c3264c171d8d7a91442161f5c
DIFF: https://github.com/llvm/llvm-project/commit/7e2cf2679ebc177c3264c171d8d7a91442161f5c.diff

LOG: [ADT] Clarify llvm::bit_cast implementation comment

When reviewing https://reviews.llvm.org/D132330, I noticed a few pre-existing
comments regarding the implementation of `llvm::bit_cast`. One comment is a bit
misleading since `std::bit_cast` is a C++20 standard library thing, not a
C++17 one (otherwise we could use it directly). Clarify that in the comment.

Differential Revision: https://reviews.llvm.org/D132332

Added: 
    

Modified: 
    llvm/include/llvm/ADT/bit.h

Removed: 
    


################################################################################
diff  --git a/llvm/include/llvm/ADT/bit.h b/llvm/include/llvm/ADT/bit.h
index 4a1bcfb05965..8e280db1927b 100644
--- a/llvm/include/llvm/ADT/bit.h
+++ b/llvm/include/llvm/ADT/bit.h
@@ -19,7 +19,7 @@
 
 namespace llvm {
 
-// This implementation of bit_cast is 
diff erent from the C++17 one in two ways:
+// This implementation of bit_cast is 
diff erent from the C++20 one in two ways:
 //  - It isn't constexpr because that requires compiler support.
 //  - It requires trivially-constructible To, to avoid UB in the implementation.
 template <