Author: Timm Baeder Date: 2025-03-24T12:28:23+01:00 New Revision: c7f14f601f36f8fdabb9182e253add18a471308f
URL: https://github.com/llvm/llvm-project/commit/c7f14f601f36f8fdabb9182e253add18a471308f DIFF: https://github.com/llvm/llvm-project/commit/c7f14f601f36f8fdabb9182e253add18a471308f.diff LOG: [clang][bytecode] Implement __builtin_wcschr (#132708) This is already almost implemented, just need to enable support for it. Added: Modified: clang/lib/AST/ByteCode/InterpBuiltin.cpp clang/test/AST/ByteCode/builtin-functions.cpp Removed: ################################################################################ diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp b/clang/lib/AST/ByteCode/InterpBuiltin.cpp index 4a56e73239675..71fd25c183f48 100644 --- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp +++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp @@ -2052,7 +2052,8 @@ static bool interp__builtin_memchr(InterpState &S, CodePtr OpPC, } bool StopAtZero = - (ID == Builtin::BIstrchr || ID == Builtin::BI__builtin_strchr); + (ID == Builtin::BIstrchr || ID == Builtin::BI__builtin_strchr || + ID == Builtin::BIwcschr || ID == Builtin::BI__builtin_wcschr); PrimType ElemT = IsRawByte ? PT_Sint8 : *S.getContext().classify(getElemType(Ptr)); @@ -2574,10 +2575,8 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F, case Builtin::BI__builtin_strchr: case Builtin::BIwmemchr: case Builtin::BI__builtin_wmemchr: -#if 0 case Builtin::BIwcschr: case Builtin::BI__builtin_wcschr: -#endif case Builtin::BI__builtin_char_memchr: if (!interp__builtin_memchr(S, OpPC, Frame, F, Call)) return false; diff --git a/clang/test/AST/ByteCode/builtin-functions.cpp b/clang/test/AST/ByteCode/builtin-functions.cpp index 13a34f71a6354..c3ea158eae859 100644 --- a/clang/test/AST/ByteCode/builtin-functions.cpp +++ b/clang/test/AST/ByteCode/builtin-functions.cpp @@ -21,6 +21,7 @@ extern "C" { extern void *memchr(const void *s, int c, size_t n); extern char *strchr(const char *s, int c); extern wchar_t *wmemchr(const wchar_t *s, wchar_t c, size_t n); + extern wchar_t *wcschr(const wchar_t *s, wchar_t c); } namespace strcmp { @@ -1511,4 +1512,24 @@ namespace WMemChr { constexpr wchar_t kStr2[] = {L'f', L'o', L'\xffff', L'o'}; static_assert(__builtin_wmemchr(kStr2, L'\xffff', 4) == kStr2 + 2); + + + static_assert(__builtin_wcschr(kStr, L'a') == kStr); + static_assert(__builtin_wcschr(kStr, L'b') == kStr + 1); + static_assert(__builtin_wcschr(kStr, L'c') == kStr + 2); + static_assert(__builtin_wcschr(kStr, L'd') == nullptr); + static_assert(__builtin_wcschr(kStr, L'e') == nullptr); + static_assert(__builtin_wcschr(kStr, L'\0') == kStr + 5); + static_assert(__builtin_wcschr(kStr, L'a' + 256) == nullptr); + static_assert(__builtin_wcschr(kStr, L'a' - 256) == nullptr); + static_assert(__builtin_wcschr(kStr, L'\xffff') == kStr + 4); + static_assert(__builtin_wcschr(kFoo, L'o') == kFoo + 1); + static_assert(__builtin_wcschr(kFoo, L'x') == nullptr); // both-error {{not an integral constant}} \ + // both-note {{dereferenced one-past-the-end}} + static_assert(__builtin_wcschr(nullptr, L'x') == nullptr); // both-error {{not an integral constant}} \ + // both-note {{dereferenced null}} + + + constexpr bool c = !wcschr(L"hello", L'h'); // both-error {{constant expression}} \ + // both-note {{non-constexpr function 'wcschr' cannot be used in a constant expression}} } _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
