Author: Timm Baeder Date: 2026-06-04T11:00:54+02:00 New Revision: 1960c7a9fdf2fc613a148fbc078173adddd6ca13
URL: https://github.com/llvm/llvm-project/commit/1960c7a9fdf2fc613a148fbc078173adddd6ca13 DIFF: https://github.com/llvm/llvm-project/commit/1960c7a9fdf2fc613a148fbc078173adddd6ca13.diff LOG: [clang][bytecode] Reject erroneous vector conversions (#201368) Added: Modified: clang/lib/AST/ByteCode/Compiler.cpp clang/test/AST/ByteCode/cxx23.cpp Removed: ################################################################################ diff --git a/clang/lib/AST/ByteCode/Compiler.cpp b/clang/lib/AST/ByteCode/Compiler.cpp index 4d6abee270143..4784627bca3b9 100644 --- a/clang/lib/AST/ByteCode/Compiler.cpp +++ b/clang/lib/AST/ByteCode/Compiler.cpp @@ -4390,6 +4390,9 @@ bool Compiler<Emitter>::VisitAddrLabelExpr(const AddrLabelExpr *E) { template <class Emitter> bool Compiler<Emitter>::emitVectorConversion(const Expr *Src, const Expr *E) { + if (Src->containsErrors()) + return false; + const auto *VT = E->getType()->castAs<VectorType>(); QualType ElemType = VT->getElementType(); PrimType ElemT = classifyPrim(ElemType); diff --git a/clang/test/AST/ByteCode/cxx23.cpp b/clang/test/AST/ByteCode/cxx23.cpp index 4619023af83e6..0050d34a47269 100644 --- a/clang/test/AST/ByteCode/cxx23.cpp +++ b/clang/test/AST/ByteCode/cxx23.cpp @@ -646,3 +646,17 @@ namespace DynamicCast { constexpr S s; constexpr int foo = (dynamic_cast<const S &>(s), 0); } + +#if __cplusplus >= 202302L +namespace BrokenShuffleVector { + typedef float __m128 __attribute__((__vector_size__(16))); + + static inline constexpr __m128 _mm_cvtps_pd(__m128 z) { + __builtin_convertvector(__builtin_shufflevector(z, z), __m128); // all-error {{first two arguments to '__builtin_shufflevector' must have the same type}} \ + // all-warning {{expression result unused}} + } + + constexpr __m128 kf1{1.0f, 2.0f, 3.0f, 4.0f}; + constexpr __m128 v_mm_cvtps_pd = _mm_cvtps_pd(kf1); // all-error {{must be initialized by a constant expression}} +} +#endif _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
