[PATCH] D106333: [AArch64][SVE] Handle svbool_t VLST <-> VLAT/GNUT conversion

[JunMa via Phabricator via cfe-commits]

junparser created this revision.
junparser added reviewers: efriedma, bsmith, joechrisellis, c-rhodes, paulwalker-arm.
Herald added subscribers: psnobl, kristof.beyls, tschuett.
junparser requested review of this revision.
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According to https://godbolt.org/z/q5rME1naY and acle, we found that
there are different SVE conversion behaviors between clang and gcc. It turns
out that llvm does not handle SVE predicates width properly.

This patch 1) checks SVE predicates width rightly with svbool_t type.

2. removes warning on svbool_t VLST <-> VLAT/GNUT conversion.
3. disables VLST <-> VLAT/GNUT conversion between SVE vectors and predicates

due to different width.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106333

Files:
  clang/lib/AST/ASTContext.cpp
  clang/lib/Sema/SemaChecking.cpp
  clang/test/CodeGen/attr-arm-sve-vector-bits-codegen.c
  clang/test/SemaCXX/aarch64-sve-explicit-casts-fixed-size.cpp
  clang/test/SemaCXX/aarch64-sve-lax-vector-conversions.cpp
  clang/test/SemaCXX/attr-arm-sve-vector-bits.cpp

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