[all-commits] [llvm/llvm-project] 228fab: [Clang][RISCV] Introduce OFP8(E4M3, E5M2) RISC-V v...

[Brandon Wu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 228fabd5be82ac15d14109b90c7ee1cd682b4254
      https://github.com/llvm/llvm-project/commit/228fabd5be82ac15d14109b90c7ee1cd682b4254
  Author: Brandon Wu <brandon.wu at sifive.com>
  Date:   2026-04-25 (Sat, 25 Apr 2026)

  Changed paths:
    M clang/include/clang/AST/TypeBase.h
    M clang/include/clang/Basic/RISCVVTypes.def
    M clang/include/clang/Basic/riscv_vector.td
    M clang/include/clang/Serialization/ASTBitCodes.h
    M clang/lib/Sema/SemaRISCV.cpp
    M clang/lib/Support/RISCVVIntrinsicUtils.cpp
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/non-policy/non-overloaded/vfncvt.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/non-policy/non-overloaded/vfncvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/non-policy/non-overloaded/vfwcvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/non-policy/overloaded/vfncvt.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/non-policy/overloaded/vfncvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/non-policy/overloaded/vfwcvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/policy/non-overloaded/vfncvt.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/policy/non-overloaded/vfncvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/policy/non-overloaded/vfwcvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/policy/overloaded/vfncvt.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/policy/overloaded/vfncvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-autogenerated/zvfofp8min/policy/overloaded/vfwcvtbf16.c
    M clang/test/CodeGen/RISCV/rvv-intrinsics-handcrafted/rvv-intrinsic-datatypes.cpp
    A clang/test/CodeGenCXX/riscv-mangle-rvv-vectors.cpp
    M clang/test/Sema/riscv-types.c
    M clang/utils/TableGen/RISCVVEmitter.cpp

  Log Message:
  -----------
  [Clang][RISCV] Introduce OFP8(E4M3, E5M2) RISC-V vector types (#191349)

Currently there's no OFP8 scalar type supported in both clang and llvm
type system, the vector OFP8 RVV types are lowered to i8 llvm types for
now.
The reason to support only clang type is because of intrinsics
definition capability. If we make the clang type also using uint8 vector
types, it's not able to distinguish between E4M3 type and E5M2 type so
that we have to append additional type suffix to it.
intrinsic spec update pr:
https://github.com/riscv-non-isa/riscv-rvv-intrinsic-doc/pull/432
vreinterpret intrinsic PR:
https://github.com/llvm/llvm-project/pull/191626

DONT MERGE: We have to get the intrinsic spec merged first to be able to
make zvfofp8min change



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