[all-commits] [llvm/llvm-project] 599421: [RISCV] Use unsigned instead of signed types for Z...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 599421ae36c332474c5034b4baaab59833e76418
      https://github.com/llvm/llvm-project/commit/599421ae36c332474c5034b4baaab59833e76418
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2023-07-15 (Sat, 15 Jul 2023)

  Changed paths:
    M clang/include/clang/Basic/BuiltinsRISCV.def
    M clang/test/CodeGen/RISCV/rvb-intrinsics/riscv32-zbkb.c
    M clang/test/CodeGen/RISCV/rvb-intrinsics/riscv32-zbkx.c
    M clang/test/CodeGen/RISCV/rvb-intrinsics/riscv64-zbkb-error.c
    M clang/test/CodeGen/RISCV/rvb-intrinsics/riscv64-zbkb.c
    M clang/test/CodeGen/RISCV/rvb-intrinsics/riscv64-zbkx.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv32-zknd.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv32-zkne.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv32-zknh.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv32-zksed.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv32-zksh.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv64-zknd-zkne.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv64-zknd.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv64-zkne.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv64-zknh.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv64-zksed.c
    M clang/test/CodeGen/RISCV/rvk-intrinsics/riscv64-zksh.c

  Log Message:
  -----------
  [RISCV] Use unsigned instead of signed types for Zk* and Zb* builtins.

Unsigned is a better representation for bitmanipulation and cryptography.w

The only exception being the return values for clz and ctz intrinsics is
a signed int. That matches the target independent clz and ctz builtins.

This is consistent with the current scalar crypto proposal
https://github.com/riscv-non-isa/riscv-c-api-doc/pull/44

Reviewed By: VincentWu

Differential Revision: https://reviews.llvm.org/D154616