llvm-project

e7f054f7 - [CIR][NFC] Upstream IR roundtrip tests for constants (#194518)

[CIR][NFC] Upstream IR roundtrip tests for constants (#194518) Upstream `clang/test/CIR/IR` roundtrip tests for CIR constant attributes: integer boundary constants, floating-point special values that require exact hex spelling, and pointer constants with integer and null payloads. Partially addresses #156747.