[all-commits] [llvm/llvm-project] 2e19a5: [Clang][Sema] Report diagnostic for invalid mask i...

[Amr Hesham via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2e19a54753db13719d99fa126ef1a9cb2d3cc240
      https://github.com/llvm/llvm-project/commit/2e19a54753db13719d99fa126ef1a9cb2d3cc240
  Author: Amr Hesham <amr96 at programmer.net>
  Date:   2026-09-11 (Fri, 11 Sep 2026)

  Changed paths:
    M clang/docs/ReleaseNotes.md
    M clang/lib/Sema/SemaChecking.cpp
    M clang/test/AST/ByteCode/cxx23.cpp
    A clang/test/SemaCXX/vector-shuffle.cpp

  Log Message:
  -----------
  [Clang][Sema] Report diagnostic for invalid mask in shufflevector (#221558)

Clang used to accept a vector with an integer representation as a valid
mask; otherwise, it reported a type mismatch. This led to accepting a
vector of booleans as a valid mask and reporting that types are not
equal if both arguments are equal but not vectors of integers.

Currently, it checks for the mask type and reports a clear error message
if the mask is a vector of bool or not a vector of integers

Fixes: #218132



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