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27d37ee4d0
When various `Sema*.h` and `Sema*.cpp` files were created, cleanup of `Sema.h` includes and forward declarations was left for the later. Now's the time. This commit touches `Sema.h` and Sema components: 1. Unused includes are removed. 2. Unused forward declarations are removed. 3. Missing includes are added (those files are largely IWYU-clean now). 4. Includes were converted into forward declarations where possible. As this commit focuses on headers, all changes to `.cpp` files were minimal, and were aiming at keeping everything buildable.
443 lines
17 KiB
C++
443 lines
17 KiB
C++
//===------ SemaPPC.cpp ------ PowerPC target-specific routines -----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements semantic analysis functions specific to PowerPC.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/SemaPPC.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Attr.h"
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#include "clang/AST/CharUnits.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/Type.h"
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#include "clang/Basic/DiagnosticSema.h"
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#include "clang/Basic/SourceLocation.h"
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#include "clang/Basic/TargetBuiltins.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Sema/Sema.h"
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#include "llvm/ADT/APSInt.h"
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namespace clang {
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SemaPPC::SemaPPC(Sema &S) : SemaBase(S) {}
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void SemaPPC::checkAIXMemberAlignment(SourceLocation Loc, const Expr *Arg) {
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const auto *ICE = dyn_cast<ImplicitCastExpr>(Arg->IgnoreParens());
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if (!ICE)
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return;
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const auto *DR = dyn_cast<DeclRefExpr>(ICE->getSubExpr());
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if (!DR)
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return;
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const auto *PD = dyn_cast<ParmVarDecl>(DR->getDecl());
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if (!PD || !PD->getType()->isRecordType())
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return;
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QualType ArgType = Arg->getType();
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for (const FieldDecl *FD :
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ArgType->castAs<RecordType>()->getDecl()->fields()) {
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if (const auto *AA = FD->getAttr<AlignedAttr>()) {
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CharUnits Alignment = getASTContext().toCharUnitsFromBits(
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AA->getAlignment(getASTContext()));
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if (Alignment.getQuantity() == 16) {
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Diag(FD->getLocation(), diag::warn_not_xl_compatible) << FD;
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Diag(Loc, diag::note_misaligned_member_used_here) << PD;
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}
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}
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}
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}
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static bool isPPC_64Builtin(unsigned BuiltinID) {
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// These builtins only work on PPC 64bit targets.
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switch (BuiltinID) {
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case PPC::BI__builtin_divde:
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case PPC::BI__builtin_divdeu:
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case PPC::BI__builtin_bpermd:
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case PPC::BI__builtin_pdepd:
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case PPC::BI__builtin_pextd:
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case PPC::BI__builtin_ppc_cdtbcd:
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case PPC::BI__builtin_ppc_cbcdtd:
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case PPC::BI__builtin_ppc_addg6s:
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case PPC::BI__builtin_ppc_ldarx:
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case PPC::BI__builtin_ppc_stdcx:
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case PPC::BI__builtin_ppc_tdw:
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case PPC::BI__builtin_ppc_trapd:
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case PPC::BI__builtin_ppc_cmpeqb:
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case PPC::BI__builtin_ppc_setb:
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case PPC::BI__builtin_ppc_mulhd:
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case PPC::BI__builtin_ppc_mulhdu:
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case PPC::BI__builtin_ppc_maddhd:
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case PPC::BI__builtin_ppc_maddhdu:
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case PPC::BI__builtin_ppc_maddld:
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case PPC::BI__builtin_ppc_load8r:
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case PPC::BI__builtin_ppc_store8r:
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case PPC::BI__builtin_ppc_insert_exp:
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case PPC::BI__builtin_ppc_extract_sig:
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case PPC::BI__builtin_ppc_addex:
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case PPC::BI__builtin_darn:
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case PPC::BI__builtin_darn_raw:
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case PPC::BI__builtin_ppc_compare_and_swaplp:
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case PPC::BI__builtin_ppc_fetch_and_addlp:
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case PPC::BI__builtin_ppc_fetch_and_andlp:
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case PPC::BI__builtin_ppc_fetch_and_orlp:
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case PPC::BI__builtin_ppc_fetch_and_swaplp:
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return true;
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}
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return false;
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}
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bool SemaPPC::CheckPPCBuiltinFunctionCall(const TargetInfo &TI,
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unsigned BuiltinID,
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CallExpr *TheCall) {
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ASTContext &Context = getASTContext();
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bool IsTarget64Bit = TI.getTypeWidth(TI.getIntPtrType()) == 64;
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llvm::APSInt Result;
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if (isPPC_64Builtin(BuiltinID) && !IsTarget64Bit)
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return Diag(TheCall->getBeginLoc(), diag::err_64_bit_builtin_32_bit_tgt)
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<< TheCall->getSourceRange();
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switch (BuiltinID) {
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default:
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return false;
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case PPC::BI__builtin_altivec_crypto_vshasigmaw:
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case PPC::BI__builtin_altivec_crypto_vshasigmad:
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 1) ||
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SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 15);
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case PPC::BI__builtin_altivec_dss:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 3);
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case PPC::BI__builtin_tbegin:
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case PPC::BI__builtin_tend:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 1);
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case PPC::BI__builtin_tsr:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 7);
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case PPC::BI__builtin_tabortwc:
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case PPC::BI__builtin_tabortdc:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 31);
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case PPC::BI__builtin_tabortwci:
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case PPC::BI__builtin_tabortdci:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 31) ||
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SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 31);
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// According to GCC 'Basic PowerPC Built-in Functions Available on ISA 2.05',
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// __builtin_(un)pack_longdouble are available only if long double uses IBM
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// extended double representation.
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case PPC::BI__builtin_unpack_longdouble:
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if (SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 1))
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return true;
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[[fallthrough]];
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case PPC::BI__builtin_pack_longdouble:
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if (&TI.getLongDoubleFormat() != &llvm::APFloat::PPCDoubleDouble())
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return Diag(TheCall->getBeginLoc(), diag::err_ppc_builtin_requires_abi)
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<< "ibmlongdouble";
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return false;
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case PPC::BI__builtin_altivec_dst:
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case PPC::BI__builtin_altivec_dstt:
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case PPC::BI__builtin_altivec_dstst:
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case PPC::BI__builtin_altivec_dststt:
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return SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 3);
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case PPC::BI__builtin_vsx_xxpermdi:
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case PPC::BI__builtin_vsx_xxsldwi:
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return BuiltinVSX(TheCall);
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case PPC::BI__builtin_unpack_vector_int128:
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 1);
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case PPC::BI__builtin_altivec_vgnb:
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 2, 7);
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case PPC::BI__builtin_vsx_xxeval:
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return SemaRef.BuiltinConstantArgRange(TheCall, 3, 0, 255);
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case PPC::BI__builtin_altivec_vsldbi:
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return SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 7);
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case PPC::BI__builtin_altivec_vsrdbi:
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return SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 7);
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case PPC::BI__builtin_vsx_xxpermx:
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return SemaRef.BuiltinConstantArgRange(TheCall, 3, 0, 7);
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case PPC::BI__builtin_ppc_tw:
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case PPC::BI__builtin_ppc_tdw:
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return SemaRef.BuiltinConstantArgRange(TheCall, 2, 1, 31);
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case PPC::BI__builtin_ppc_cmprb:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 1);
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// For __rlwnm, __rlwimi and __rldimi, the last parameter mask must
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// be a constant that represents a contiguous bit field.
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case PPC::BI__builtin_ppc_rlwnm:
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return SemaRef.ValueIsRunOfOnes(TheCall, 2);
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case PPC::BI__builtin_ppc_rlwimi:
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return SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 31) ||
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SemaRef.ValueIsRunOfOnes(TheCall, 3);
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case PPC::BI__builtin_ppc_rldimi:
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return SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 63) ||
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SemaRef.ValueIsRunOfOnes(TheCall, 3);
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case PPC::BI__builtin_ppc_addex: {
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if (SemaRef.BuiltinConstantArgRange(TheCall, 2, 0, 3))
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return true;
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// Output warning for reserved values 1 to 3.
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int ArgValue =
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TheCall->getArg(2)->getIntegerConstantExpr(Context)->getSExtValue();
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if (ArgValue != 0)
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Diag(TheCall->getBeginLoc(), diag::warn_argument_undefined_behaviour)
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<< ArgValue;
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return false;
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}
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case PPC::BI__builtin_ppc_mtfsb0:
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case PPC::BI__builtin_ppc_mtfsb1:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 31);
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case PPC::BI__builtin_ppc_mtfsf:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 255);
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case PPC::BI__builtin_ppc_mtfsfi:
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return SemaRef.BuiltinConstantArgRange(TheCall, 0, 0, 7) ||
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SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 15);
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case PPC::BI__builtin_ppc_alignx:
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return SemaRef.BuiltinConstantArgPower2(TheCall, 0);
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case PPC::BI__builtin_ppc_rdlam:
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return SemaRef.ValueIsRunOfOnes(TheCall, 2);
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case PPC::BI__builtin_vsx_ldrmb:
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case PPC::BI__builtin_vsx_strmb:
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 1, 16);
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case PPC::BI__builtin_altivec_vcntmbb:
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case PPC::BI__builtin_altivec_vcntmbh:
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case PPC::BI__builtin_altivec_vcntmbw:
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case PPC::BI__builtin_altivec_vcntmbd:
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 1);
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case PPC::BI__builtin_vsx_xxgenpcvbm:
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case PPC::BI__builtin_vsx_xxgenpcvhm:
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case PPC::BI__builtin_vsx_xxgenpcvwm:
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case PPC::BI__builtin_vsx_xxgenpcvdm:
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 3);
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case PPC::BI__builtin_ppc_test_data_class: {
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// Check if the first argument of the __builtin_ppc_test_data_class call is
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// valid. The argument must be 'float' or 'double' or '__float128'.
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QualType ArgType = TheCall->getArg(0)->getType();
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if (ArgType != QualType(Context.FloatTy) &&
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ArgType != QualType(Context.DoubleTy) &&
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ArgType != QualType(Context.Float128Ty))
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return Diag(TheCall->getBeginLoc(),
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diag::err_ppc_invalid_test_data_class_type);
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return SemaRef.BuiltinConstantArgRange(TheCall, 1, 0, 127);
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}
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case PPC::BI__builtin_ppc_maxfe:
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case PPC::BI__builtin_ppc_minfe:
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case PPC::BI__builtin_ppc_maxfl:
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case PPC::BI__builtin_ppc_minfl:
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case PPC::BI__builtin_ppc_maxfs:
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case PPC::BI__builtin_ppc_minfs: {
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if (Context.getTargetInfo().getTriple().isOSAIX() &&
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(BuiltinID == PPC::BI__builtin_ppc_maxfe ||
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BuiltinID == PPC::BI__builtin_ppc_minfe))
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return Diag(TheCall->getBeginLoc(), diag::err_target_unsupported_type)
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<< "builtin" << true << 128 << QualType(Context.LongDoubleTy)
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<< false << Context.getTargetInfo().getTriple().str();
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// Argument type should be exact.
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QualType ArgType = QualType(Context.LongDoubleTy);
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if (BuiltinID == PPC::BI__builtin_ppc_maxfl ||
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BuiltinID == PPC::BI__builtin_ppc_minfl)
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ArgType = QualType(Context.DoubleTy);
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else if (BuiltinID == PPC::BI__builtin_ppc_maxfs ||
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BuiltinID == PPC::BI__builtin_ppc_minfs)
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ArgType = QualType(Context.FloatTy);
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for (unsigned I = 0, E = TheCall->getNumArgs(); I < E; ++I)
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if (TheCall->getArg(I)->getType() != ArgType)
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return Diag(TheCall->getBeginLoc(),
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diag::err_typecheck_convert_incompatible)
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<< TheCall->getArg(I)->getType() << ArgType << 1 << 0 << 0;
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return false;
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}
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#define CUSTOM_BUILTIN(Name, Intr, Types, Acc, Feature) \
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case PPC::BI__builtin_##Name: \
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return BuiltinPPCMMACall(TheCall, BuiltinID, Types);
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#include "clang/Basic/BuiltinsPPC.def"
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}
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llvm_unreachable("must return from switch");
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}
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// Check if the given type is a non-pointer PPC MMA type. This function is used
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// in Sema to prevent invalid uses of restricted PPC MMA types.
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bool SemaPPC::CheckPPCMMAType(QualType Type, SourceLocation TypeLoc) {
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ASTContext &Context = getASTContext();
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if (Type->isPointerType() || Type->isArrayType())
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return false;
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QualType CoreType = Type.getCanonicalType().getUnqualifiedType();
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#define PPC_VECTOR_TYPE(Name, Id, Size) || CoreType == Context.Id##Ty
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if (false
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#include "clang/Basic/PPCTypes.def"
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) {
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Diag(TypeLoc, diag::err_ppc_invalid_use_mma_type);
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return true;
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}
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return false;
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}
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/// DecodePPCMMATypeFromStr - This decodes one PPC MMA type descriptor from Str,
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/// advancing the pointer over the consumed characters. The decoded type is
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/// returned. If the decoded type represents a constant integer with a
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/// constraint on its value then Mask is set to that value. The type descriptors
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/// used in Str are specific to PPC MMA builtins and are documented in the file
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/// defining the PPC builtins.
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static QualType DecodePPCMMATypeFromStr(ASTContext &Context, const char *&Str,
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unsigned &Mask) {
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bool RequireICE = false;
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ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None;
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switch (*Str++) {
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case 'V':
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return Context.getVectorType(Context.UnsignedCharTy, 16,
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VectorKind::AltiVecVector);
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case 'i': {
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char *End;
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unsigned size = strtoul(Str, &End, 10);
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assert(End != Str && "Missing constant parameter constraint");
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Str = End;
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Mask = size;
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return Context.IntTy;
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}
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case 'W': {
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char *End;
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unsigned size = strtoul(Str, &End, 10);
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assert(End != Str && "Missing PowerPC MMA type size");
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Str = End;
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QualType Type;
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switch (size) {
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#define PPC_VECTOR_TYPE(typeName, Id, size) \
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case size: \
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Type = Context.Id##Ty; \
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break;
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#include "clang/Basic/PPCTypes.def"
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default:
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llvm_unreachable("Invalid PowerPC MMA vector type");
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}
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bool CheckVectorArgs = false;
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while (!CheckVectorArgs) {
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switch (*Str++) {
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case '*':
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Type = Context.getPointerType(Type);
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break;
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case 'C':
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Type = Type.withConst();
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break;
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default:
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CheckVectorArgs = true;
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--Str;
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break;
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}
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}
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return Type;
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}
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default:
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return Context.DecodeTypeStr(--Str, Context, Error, RequireICE, true);
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}
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}
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bool SemaPPC::BuiltinPPCMMACall(CallExpr *TheCall, unsigned BuiltinID,
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const char *TypeStr) {
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assert((TypeStr[0] != '\0') &&
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"Invalid types in PPC MMA builtin declaration");
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ASTContext &Context = getASTContext();
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unsigned Mask = 0;
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unsigned ArgNum = 0;
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// The first type in TypeStr is the type of the value returned by the
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// builtin. So we first read that type and change the type of TheCall.
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QualType type = DecodePPCMMATypeFromStr(Context, TypeStr, Mask);
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TheCall->setType(type);
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while (*TypeStr != '\0') {
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Mask = 0;
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QualType ExpectedType = DecodePPCMMATypeFromStr(Context, TypeStr, Mask);
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if (ArgNum >= TheCall->getNumArgs()) {
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ArgNum++;
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break;
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}
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Expr *Arg = TheCall->getArg(ArgNum);
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QualType PassedType = Arg->getType();
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QualType StrippedRVType = PassedType.getCanonicalType();
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// Strip Restrict/Volatile qualifiers.
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if (StrippedRVType.isRestrictQualified() ||
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StrippedRVType.isVolatileQualified())
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StrippedRVType = StrippedRVType.getCanonicalType().getUnqualifiedType();
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// The only case where the argument type and expected type are allowed to
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// mismatch is if the argument type is a non-void pointer (or array) and
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// expected type is a void pointer.
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if (StrippedRVType != ExpectedType)
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if (!(ExpectedType->isVoidPointerType() &&
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(StrippedRVType->isPointerType() || StrippedRVType->isArrayType())))
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return Diag(Arg->getBeginLoc(),
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diag::err_typecheck_convert_incompatible)
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<< PassedType << ExpectedType << 1 << 0 << 0;
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// If the value of the Mask is not 0, we have a constraint in the size of
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// the integer argument so here we ensure the argument is a constant that
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// is in the valid range.
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if (Mask != 0 &&
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SemaRef.BuiltinConstantArgRange(TheCall, ArgNum, 0, Mask, true))
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return true;
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ArgNum++;
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}
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// In case we exited early from the previous loop, there are other types to
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// read from TypeStr. So we need to read them all to ensure we have the right
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// number of arguments in TheCall and if it is not the case, to display a
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// better error message.
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while (*TypeStr != '\0') {
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(void)DecodePPCMMATypeFromStr(Context, TypeStr, Mask);
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ArgNum++;
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}
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if (SemaRef.checkArgCount(TheCall, ArgNum))
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return true;
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return false;
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}
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bool SemaPPC::BuiltinVSX(CallExpr *TheCall) {
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unsigned ExpectedNumArgs = 3;
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if (SemaRef.checkArgCount(TheCall, ExpectedNumArgs))
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return true;
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// Check the third argument is a compile time constant
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if (!TheCall->getArg(2)->isIntegerConstantExpr(getASTContext()))
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return Diag(TheCall->getBeginLoc(),
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diag::err_vsx_builtin_nonconstant_argument)
|
|
<< 3 /* argument index */ << TheCall->getDirectCallee()
|
|
<< SourceRange(TheCall->getArg(2)->getBeginLoc(),
|
|
TheCall->getArg(2)->getEndLoc());
|
|
|
|
QualType Arg1Ty = TheCall->getArg(0)->getType();
|
|
QualType Arg2Ty = TheCall->getArg(1)->getType();
|
|
|
|
// Check the type of argument 1 and argument 2 are vectors.
|
|
SourceLocation BuiltinLoc = TheCall->getBeginLoc();
|
|
if ((!Arg1Ty->isVectorType() && !Arg1Ty->isDependentType()) ||
|
|
(!Arg2Ty->isVectorType() && !Arg2Ty->isDependentType())) {
|
|
return Diag(BuiltinLoc, diag::err_vec_builtin_non_vector)
|
|
<< TheCall->getDirectCallee() << /*isMorethantwoArgs*/ false
|
|
<< SourceRange(TheCall->getArg(0)->getBeginLoc(),
|
|
TheCall->getArg(1)->getEndLoc());
|
|
}
|
|
|
|
// Check the first two arguments are the same type.
|
|
if (!getASTContext().hasSameUnqualifiedType(Arg1Ty, Arg2Ty)) {
|
|
return Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_vector)
|
|
<< TheCall->getDirectCallee() << /*isMorethantwoArgs*/ false
|
|
<< SourceRange(TheCall->getArg(0)->getBeginLoc(),
|
|
TheCall->getArg(1)->getEndLoc());
|
|
}
|
|
|
|
// When default clang type checking is turned off and the customized type
|
|
// checking is used, the returning type of the function must be explicitly
|
|
// set. Otherwise it is _Bool by default.
|
|
TheCall->setType(Arg1Ty);
|
|
|
|
return false;
|
|
}
|
|
|
|
} // namespace clang
|