Joshua Cranmer 8d9299cd7a [AsmParser] Revamp how floating-point literals work in LLVM IR. (#190641) ...

This adds support for the following kinds of formats:
* Hexadecimal literals like 0x1.fp13
* Special values +inf/-inf, +qnan/-qnan
* NaN values with payloads like +nan(0x1)

Additionally, the floating-point hexadecimal format that records the
bitpattern exactly no longer requires the 0xL or 0xK or similar code for
the floating-point type. The current hexadecimal syntax is retained for
the moment, but it is expected to be ripped out after the next release
of LLVM.

These changes were discussed in an RFC at
https://discourse.llvm.org/t/rfc-floating-point-literals-in-llvm-ir/82974.

2026-04-27 13:38:54 -04:00

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