[llvm] [IR][AsmParser] Revamp how floating-point literals work in LLVM IR. (PR #121838)

[Jay Foad via llvm-commits]

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@@ -4608,31 +4610,40 @@ Simple Constants
     The identifier '``none``' is recognized as an empty token constant
     and must be of :ref:`token type <t_token>`.
 
-The one non-intuitive notation for constants is the hexadecimal form of
-floating-point constants. For example, the form
-'``double    0x432ff973cafa8000``' is equivalent to (but harder to read
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jayfoad wrote:

Are you removing this old `double 0x432ff973cafa8000` syntax? So is this change not backwards compatible?

https://github.com/llvm/llvm-project/pull/121838