13d45a7739bae1e9c53c94ebb38c4339bd8ec0ca6Chad Rosier//===--- SemaStmtAsm.cpp - Semantic Analysis for Asm Statements -----------===// 24b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// 34b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// The LLVM Compiler Infrastructure 44b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// 54b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// This file is distributed under the University of Illinois Open Source 64b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// License. See LICENSE.TXT for details. 74b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// 84b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier//===----------------------------------------------------------------------===// 94b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// 104b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// This file implements semantic analysis for inline asm statements. 114b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier// 124b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier//===----------------------------------------------------------------------===// 134b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 144b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "clang/Sema/SemaInternal.h" 15802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier#include "clang/AST/RecordLayout.h" 164b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "clang/AST/TypeLoc.h" 174b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "clang/Basic/TargetInfo.h" 1855fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Lex/Preprocessor.h" 1955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Initialization.h" 2055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Lookup.h" 2155fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Scope.h" 2255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/ScopeInfo.h" 234b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/ADT/ArrayRef.h" 244b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/ADT/BitVector.h" 254b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/ADT/SmallString.h" 264b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCAsmInfo.h" 274b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCContext.h" 284b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCObjectFileInfo.h" 2955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/MC/MCParser/MCAsmParser.h" 304b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCRegisterInfo.h" 314b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCStreamer.h" 324b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCSubtargetInfo.h" 334b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/MC/MCTargetAsmParser.h" 344b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/Support/SourceMgr.h" 354b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/Support/TargetRegistry.h" 364b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier#include "llvm/Support/TargetSelect.h" 374b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosierusing namespace clang; 384b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosierusing namespace sema; 394b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 404b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// CheckAsmLValue - GNU C has an extremely ugly extension whereby they silently 414b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// ignore "noop" casts in places where an lvalue is required by an inline asm. 424b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// We emulate this behavior when -fheinous-gnu-extensions is specified, but 434b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// provide a strong guidance to not use it. 444b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// 454b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// This method checks to see if the argument is an acceptable l-value and 464b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// returns false if it is a case we can handle. 474b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosierstatic bool CheckAsmLValue(const Expr *E, Sema &S) { 484b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Type dependent expressions will be checked during instantiation. 494b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (E->isTypeDependent()) 504b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return false; 514b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 524b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (E->isLValue()) 534b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return false; // Cool, this is an lvalue. 544b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 554b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Okay, this is not an lvalue, but perhaps it is the result of a cast that we 564b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // are supposed to allow. 574b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier const Expr *E2 = E->IgnoreParenNoopCasts(S.Context); 584b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (E != E2 && E2->isLValue()) { 594b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!S.getLangOpts().HeinousExtensions) 604b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier S.Diag(E2->getLocStart(), diag::err_invalid_asm_cast_lvalue) 614b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << E->getSourceRange(); 624b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier else 634b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier S.Diag(E2->getLocStart(), diag::warn_invalid_asm_cast_lvalue) 644b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << E->getSourceRange(); 654b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Accept, even if we emitted an error diagnostic. 664b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return false; 674b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 684b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 694b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // None of the above, just randomly invalid non-lvalue. 704b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return true; 714b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier} 724b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 734b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// isOperandMentioned - Return true if the specified operand # is mentioned 744b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier/// anywhere in the decomposed asm string. 754b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosierstatic bool isOperandMentioned(unsigned OpNo, 76df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier ArrayRef<GCCAsmStmt::AsmStringPiece> AsmStrPieces) { 774b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier for (unsigned p = 0, e = AsmStrPieces.size(); p != e; ++p) { 78df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier const GCCAsmStmt::AsmStringPiece &Piece = AsmStrPieces[p]; 794b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Piece.isOperand()) continue; 804b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 814b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // If this is a reference to the input and if the input was the smaller 824b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // one, then we have to reject this asm. 834b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Piece.getOperandNo() == OpNo) 844b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return true; 854b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 864b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return false; 874b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier} 884b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 89df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad RosierStmtResult Sema::ActOnGCCAsmStmt(SourceLocation AsmLoc, bool IsSimple, 90df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier bool IsVolatile, unsigned NumOutputs, 91df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier unsigned NumInputs, IdentifierInfo **Names, 92df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier MultiExprArg constraints, MultiExprArg exprs, 93df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier Expr *asmString, MultiExprArg clobbers, 94df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier SourceLocation RParenLoc) { 954b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier unsigned NumClobbers = clobbers.size(); 964b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringLiteral **Constraints = 975354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer reinterpret_cast<StringLiteral**>(constraints.data()); 985354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Expr **Exprs = exprs.data(); 994b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringLiteral *AsmString = cast<StringLiteral>(asmString); 1005354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer StringLiteral **Clobbers = reinterpret_cast<StringLiteral**>(clobbers.data()); 1014b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1024b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier SmallVector<TargetInfo::ConstraintInfo, 4> OutputConstraintInfos; 1034b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1044b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // The parser verifies that there is a string literal here. 1054b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!AsmString->isAscii()) 1064b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(AsmString->getLocStart(),diag::err_asm_wide_character) 1074b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << AsmString->getSourceRange()); 1084b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1094b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier for (unsigned i = 0; i != NumOutputs; i++) { 1104b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringLiteral *Literal = Constraints[i]; 1114b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Literal->isAscii()) 1124b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(Literal->getLocStart(),diag::err_asm_wide_character) 1134b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << Literal->getSourceRange()); 1144b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1154b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringRef OutputName; 1164b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Names[i]) 1174b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OutputName = Names[i]->getName(); 1184b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1194b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier TargetInfo::ConstraintInfo Info(Literal->getString(), OutputName); 1204b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Context.getTargetInfo().validateOutputConstraint(Info)) 1214b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(Literal->getLocStart(), 1224b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_invalid_output_constraint) 1234b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << Info.getConstraintStr()); 1244b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1254b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Check that the output exprs are valid lvalues. 1264b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Expr *OutputExpr = Exprs[i]; 1274b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (CheckAsmLValue(OutputExpr, *this)) { 1284b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(OutputExpr->getLocStart(), 1294b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_invalid_lvalue_in_output) 1304b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << OutputExpr->getSourceRange()); 1314b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1324b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1334b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OutputConstraintInfos.push_back(Info); 1344b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1354b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1364b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier SmallVector<TargetInfo::ConstraintInfo, 4> InputConstraintInfos; 1374b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1384b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier for (unsigned i = NumOutputs, e = NumOutputs + NumInputs; i != e; i++) { 1394b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringLiteral *Literal = Constraints[i]; 1404b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Literal->isAscii()) 1414b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(Literal->getLocStart(),diag::err_asm_wide_character) 1424b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << Literal->getSourceRange()); 1434b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1444b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringRef InputName; 1454b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Names[i]) 1464b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputName = Names[i]->getName(); 1474b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1484b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier TargetInfo::ConstraintInfo Info(Literal->getString(), InputName); 1494b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Context.getTargetInfo().validateInputConstraint(OutputConstraintInfos.data(), 1504b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier NumOutputs, Info)) { 1514b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(Literal->getLocStart(), 1524b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_invalid_input_constraint) 1534b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << Info.getConstraintStr()); 1544b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1554b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1564b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Expr *InputExpr = Exprs[i]; 1574b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1584b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Only allow void types for memory constraints. 1594b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Info.allowsMemory() && !Info.allowsRegister()) { 1604b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (CheckAsmLValue(InputExpr, *this)) 1614b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(InputExpr->getLocStart(), 1624b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_invalid_lvalue_in_input) 1634b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << Info.getConstraintStr() 1644b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << InputExpr->getSourceRange()); 1654b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1664b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1674b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Info.allowsRegister()) { 1684b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (InputExpr->getType()->isVoidType()) { 1694b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(InputExpr->getLocStart(), 1704b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_invalid_type_in_input) 1714b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << InputExpr->getType() << Info.getConstraintStr() 1724b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << InputExpr->getSourceRange()); 1734b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1744b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1754b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1764b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier ExprResult Result = DefaultFunctionArrayLvalueConversion(Exprs[i]); 1774b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Result.isInvalid()) 1784b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(); 1794b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1804b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Exprs[i] = Result.take(); 1814b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputConstraintInfos.push_back(Info); 18268fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling 18368fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling const Type *Ty = Exprs[i]->getType().getTypePtr(); 1846ceb377ae4e32eeed2647aacc4a7d5c4564641bfEric Christopher if (Ty->isDependentType() || Ty->isIncompleteType()) 1856ceb377ae4e32eeed2647aacc4a7d5c4564641bfEric Christopher continue; 1866ceb377ae4e32eeed2647aacc4a7d5c4564641bfEric Christopher 18768fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling unsigned Size = Context.getTypeSize(Ty); 18868fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling if (!Context.getTargetInfo().validateInputSize(Literal->getString(), 18968fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling Size)) 19068fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling return StmtError(Diag(InputExpr->getLocStart(), 19168fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling diag::err_asm_invalid_input_size) 19268fd608c2c0866064e974c3d43778c47c1cbb080Bill Wendling << Info.getConstraintStr()); 1934b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 1944b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 1954b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Check that the clobbers are valid. 1964b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier for (unsigned i = 0; i != NumClobbers; i++) { 1974b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringLiteral *Literal = Clobbers[i]; 1984b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Literal->isAscii()) 1994b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(Literal->getLocStart(),diag::err_asm_wide_character) 2004b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << Literal->getSourceRange()); 2014b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2024b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringRef Clobber = Literal->getString(); 2034b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2044b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Context.getTargetInfo().isValidClobber(Clobber)) 2054b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(Diag(Literal->getLocStart(), 2064b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_unknown_register_name) << Clobber); 2074b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 2084b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 209df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier GCCAsmStmt *NS = 210df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier new (Context) GCCAsmStmt(Context, AsmLoc, IsSimple, IsVolatile, NumOutputs, 211df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier NumInputs, Names, Constraints, Exprs, AsmString, 212df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier NumClobbers, Clobbers, RParenLoc); 2134b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Validate the asm string, ensuring it makes sense given the operands we 2144b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // have. 215df5faf5e7ae6823d0af0b801c4ac26d47f2cee97Chad Rosier SmallVector<GCCAsmStmt::AsmStringPiece, 8> Pieces; 2164b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier unsigned DiagOffs; 2174b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (unsigned DiagID = NS->AnalyzeAsmString(Pieces, Context, DiagOffs)) { 2184b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Diag(getLocationOfStringLiteralByte(AsmString, DiagOffs), DiagID) 2194b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << AsmString->getSourceRange(); 2204b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(); 2214b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 2224b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 22350d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling // Validate constraints and modifiers. 22450d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling for (unsigned i = 0, e = Pieces.size(); i != e; ++i) { 22550d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling GCCAsmStmt::AsmStringPiece &Piece = Pieces[i]; 22650d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (!Piece.isOperand()) continue; 22750d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 22850d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling // Look for the correct constraint index. 22950d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling unsigned Idx = 0; 23050d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling unsigned ConstraintIdx = 0; 23150d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling for (unsigned i = 0, e = NS->getNumOutputs(); i != e; ++i, ++ConstraintIdx) { 23250d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling TargetInfo::ConstraintInfo &Info = OutputConstraintInfos[i]; 23350d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Idx == Piece.getOperandNo()) 23450d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling break; 23550d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling ++Idx; 23650d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 23750d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Info.isReadWrite()) { 23850d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Idx == Piece.getOperandNo()) 23950d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling break; 24050d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling ++Idx; 24150d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling } 24250d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling } 24350d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 24450d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling for (unsigned i = 0, e = NS->getNumInputs(); i != e; ++i, ++ConstraintIdx) { 24550d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling TargetInfo::ConstraintInfo &Info = InputConstraintInfos[i]; 24650d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Idx == Piece.getOperandNo()) 24750d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling break; 24850d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling ++Idx; 24950d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 25050d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Info.isReadWrite()) { 25150d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Idx == Piece.getOperandNo()) 25250d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling break; 25350d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling ++Idx; 25450d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling } 25550d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling } 25650d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 25750d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling // Now that we have the right indexes go ahead and check. 25850d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling StringLiteral *Literal = Constraints[ConstraintIdx]; 25950d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling const Type *Ty = Exprs[ConstraintIdx]->getType().getTypePtr(); 26050d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (Ty->isDependentType() || Ty->isIncompleteType()) 26150d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling continue; 26250d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 26350d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling unsigned Size = Context.getTypeSize(Ty); 26450d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling if (!Context.getTargetInfo() 26550d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling .validateConstraintModifier(Literal->getString(), Piece.getModifier(), 26650d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling Size)) 26750d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling Diag(Exprs[ConstraintIdx]->getLocStart(), 26850d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling diag::warn_asm_mismatched_size_modifier); 26950d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling } 27050d46caf00c743312e0ea1f87a693d504b12ef51Bill Wendling 2714b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Validate tied input operands for type mismatches. 2724b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier for (unsigned i = 0, e = InputConstraintInfos.size(); i != e; ++i) { 2734b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier TargetInfo::ConstraintInfo &Info = InputConstraintInfos[i]; 2744b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2754b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // If this is a tied constraint, verify that the output and input have 2764b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // either exactly the same type, or that they are int/ptr operands with the 2774b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // same size (int/long, int*/long, are ok etc). 2784b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!Info.hasTiedOperand()) continue; 2794b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2804b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier unsigned TiedTo = Info.getTiedOperand(); 2814b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier unsigned InputOpNo = i+NumOutputs; 2824b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Expr *OutputExpr = Exprs[TiedTo]; 2834b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Expr *InputExpr = Exprs[InputOpNo]; 2844b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2854b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (OutputExpr->isTypeDependent() || InputExpr->isTypeDependent()) 2864b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier continue; 2874b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2884b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier QualType InTy = InputExpr->getType(); 2894b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier QualType OutTy = OutputExpr->getType(); 2904b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (Context.hasSameType(InTy, OutTy)) 2914b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier continue; // All types can be tied to themselves. 2924b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2934b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Decide if the input and output are in the same domain (integer/ptr or 2944b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // floating point. 2954b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier enum AsmDomain { 2964b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier AD_Int, AD_FP, AD_Other 2974b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } InputDomain, OutputDomain; 2984b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 2994b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (InTy->isIntegerType() || InTy->isPointerType()) 3004b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputDomain = AD_Int; 3014b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier else if (InTy->isRealFloatingType()) 3024b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputDomain = AD_FP; 3034b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier else 3044b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputDomain = AD_Other; 3054b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3064b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (OutTy->isIntegerType() || OutTy->isPointerType()) 3074b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OutputDomain = AD_Int; 3084b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier else if (OutTy->isRealFloatingType()) 3094b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OutputDomain = AD_FP; 3104b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier else 3114b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OutputDomain = AD_Other; 3124b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3134b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // They are ok if they are the same size and in the same domain. This 3144b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // allows tying things like: 3154b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // void* to int* 3164b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // void* to int if they are the same size. 3174b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // double to long double if they are the same size. 3184b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // 3194b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier uint64_t OutSize = Context.getTypeSize(OutTy); 3204b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier uint64_t InSize = Context.getTypeSize(InTy); 3214b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (OutSize == InSize && InputDomain == OutputDomain && 3224b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputDomain != AD_Other) 3234b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier continue; 3244b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3254b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // If the smaller input/output operand is not mentioned in the asm string, 3264b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // then we can promote the smaller one to a larger input and the asm string 3274b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // won't notice. 3284b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier bool SmallerValueMentioned = false; 3294b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3304b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // If this is a reference to the input and if the input was the smaller 3314b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // one, then we have to reject this asm. 3324b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (isOperandMentioned(InputOpNo, Pieces)) { 3334b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // This is a use in the asm string of the smaller operand. Since we 3344b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // codegen this by promoting to a wider value, the asm will get printed 3354b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // "wrong". 3364b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier SmallerValueMentioned |= InSize < OutSize; 3374b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 3384b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (isOperandMentioned(TiedTo, Pieces)) { 3394b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // If this is a reference to the output, and if the output is the larger 3404b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // value, then it's ok because we'll promote the input to the larger type. 3414b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier SmallerValueMentioned |= OutSize < InSize; 3424b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 3434b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3444b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // If the smaller value wasn't mentioned in the asm string, and if the 3454b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // output was a register, just extend the shorter one to the size of the 3464b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // larger one. 3474b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (!SmallerValueMentioned && InputDomain != AD_Other && 3484b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OutputConstraintInfos[TiedTo].allowsRegister()) 3494b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier continue; 3504b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3514b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Either both of the operands were mentioned or the smaller one was 3524b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // mentioned. One more special case that we'll allow: if the tied input is 3534b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // integer, unmentioned, and is a constant, then we'll allow truncating it 3544b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // down to the size of the destination. 3554b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (InputDomain == AD_Int && OutputDomain == AD_Int && 3564b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier !isOperandMentioned(InputOpNo, Pieces) && 3574b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputExpr->isEvaluatable(Context)) { 3584b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier CastKind castKind = 3594b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier (OutTy->isBooleanType() ? CK_IntegralToBoolean : CK_IntegralCast); 3604b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier InputExpr = ImpCastExprToType(InputExpr, OutTy, castKind).take(); 3614b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Exprs[InputOpNo] = InputExpr; 3624b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier NS->setInputExpr(i, InputExpr); 3634b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier continue; 3644b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 3654b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3664b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Diag(InputExpr->getLocStart(), 3674b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier diag::err_asm_tying_incompatible_types) 3684b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << InTy << OutTy << OutputExpr->getSourceRange() 3694b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier << InputExpr->getSourceRange(); 3704b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return StmtError(); 3714b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 3724b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3734b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return Owned(NS); 3744b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier} 3754b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 376358ab765f36f70d0744ede7dc35ce74c0911e77dChad Rosier// getSpelling - Get the spelling of the AsmTok token. 3774b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosierstatic StringRef getSpelling(Sema &SemaRef, Token AsmTok) { 3784b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier StringRef Asm; 3794b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier SmallString<512> TokenBuf; 3804b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier TokenBuf.resize(512); 3814b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier bool StringInvalid = false; 3824b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Asm = SemaRef.PP.getSpelling(AsmTok, TokenBuf, &StringInvalid); 3834b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier assert (!StringInvalid && "Expected valid string!"); 3844b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return Asm; 3854b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier} 3864b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 387d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier// Build the inline assembly string. Returns true on error. 388d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosierstatic bool buildMSAsmString(Sema &SemaRef, 389d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier SourceLocation AsmLoc, 390d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier ArrayRef<Token> AsmToks, 391cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVectorImpl<unsigned> &TokOffsets, 392d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier std::string &AsmString) { 3934b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier assert (!AsmToks.empty() && "Didn't expect an empty AsmToks!"); 3944b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 3954b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier SmallString<512> Asm; 3964b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier for (unsigned i = 0, e = AsmToks.size(); i < e; ++i) { 39740d39e39e46eb36635c9735381ca5c4f916d30cdBob Wilson bool isNewAsm = ((i == 0) || 39840d39e39e46eb36635c9735381ca5c4f916d30cdBob Wilson AsmToks[i].isAtStartOfLine() || 39940d39e39e46eb36635c9735381ca5c4f916d30cdBob Wilson AsmToks[i].is(tok::kw_asm)); 4004b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (isNewAsm) { 401d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier if (i != 0) 402d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier Asm += "\n\t"; 403d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 4044b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier if (AsmToks[i].is(tok::kw_asm)) { 4054b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier i++; // Skip __asm 406b0f6b9c94077446ceb29167add2e87fb99733a55Bob Wilson if (i == e) { 407b0f6b9c94077446ceb29167add2e87fb99733a55Bob Wilson SemaRef.Diag(AsmLoc, diag::err_asm_empty); 408b0f6b9c94077446ceb29167add2e87fb99733a55Bob Wilson return true; 409b0f6b9c94077446ceb29167add2e87fb99733a55Bob Wilson } 410d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 4114b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 4124b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 4134b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 414b55e602e1dc7952edc7545fab7bb7b15047378f3Chad Rosier if (i && AsmToks[i].hasLeadingSpace() && !isNewAsm) 4154b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier Asm += ' '; 4164b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 4174de971651ba09009d4a7cc6d2fbc978dd7092263Chad Rosier StringRef Spelling = getSpelling(SemaRef, AsmToks[i]); 4184de971651ba09009d4a7cc6d2fbc978dd7092263Chad Rosier Asm += Spelling; 4195f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman TokOffsets.push_back(Asm.size()); 4204b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier } 421d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier AsmString = Asm.str(); 422b0f6b9c94077446ceb29167add2e87fb99733a55Bob Wilson return false; 4234b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier} 4244b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 425c6f84cf73e0bc04faacd1a9b7845e014e7fac21eBenjamin Kramernamespace { 426c6f84cf73e0bc04faacd1a9b7845e014e7fac21eBenjamin Kramer 4277fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosierclass MCAsmParserSemaCallbackImpl : public llvm::MCAsmParserSemaCallback { 4285f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman Sema &SemaRef; 4295f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman SourceLocation AsmLoc; 4305f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman ArrayRef<Token> AsmToks; 4315f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman ArrayRef<unsigned> TokOffsets; 432d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 433d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosierpublic: 4345f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman MCAsmParserSemaCallbackImpl(Sema &Ref, SourceLocation Loc, 4355f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman ArrayRef<Token> Toks, 4365f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman ArrayRef<unsigned> Offsets) 4375f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman : SemaRef(Ref), AsmLoc(Loc), AsmToks(Toks), TokOffsets(Offsets) { } 4387fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier ~MCAsmParserSemaCallbackImpl() {} 4397fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier 440b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier void *LookupInlineAsmIdentifier(StringRef Name, void *SrcLoc, 441b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier unsigned &Length, unsigned &Size, 442b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier unsigned &Type, bool &IsVarDecl){ 4437fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier SourceLocation Loc = SourceLocation::getFromPtrEncoding(SrcLoc); 444b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier 445b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier NamedDecl *OpDecl = SemaRef.LookupInlineAsmIdentifier(Name, Loc, Length, 446b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Size, Type, 4473973f28f347bf8ca3cca31ea30da235c95701231Chad Rosier IsVarDecl); 448d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier return static_cast<void *>(OpDecl); 4497fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier } 4505f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman 451802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier bool LookupInlineAsmField(StringRef Base, StringRef Member, 452802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier unsigned &Offset) { 453802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return SemaRef.LookupInlineAsmField(Base, Member, Offset, AsmLoc); 454802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier } 455802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 4565f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman static void MSAsmDiagHandlerCallback(const llvm::SMDiagnostic &D, 4575f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman void *Context) { 4585f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman ((MCAsmParserSemaCallbackImpl*)Context)->MSAsmDiagHandler(D); 4595f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman } 4605f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman void MSAsmDiagHandler(const llvm::SMDiagnostic &D) { 4615f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // Compute an offset into the inline asm buffer. 4625f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // FIXME: This isn't right if .macro is involved (but hopefully, no 4635f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // real-world code does that). 4645f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman const llvm::SourceMgr &LSM = *D.getSourceMgr(); 4655f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman const llvm::MemoryBuffer *LBuf = 4665f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman LSM.getMemoryBuffer(LSM.FindBufferContainingLoc(D.getLoc())); 4675f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman unsigned Offset = D.getLoc().getPointer() - LBuf->getBufferStart(); 4685f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman 4695f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // Figure out which token that offset points into. 4705f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman const unsigned *OffsetPtr = 4715f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman std::lower_bound(TokOffsets.begin(), TokOffsets.end(), Offset); 4725f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman unsigned TokIndex = OffsetPtr - TokOffsets.begin(); 4735f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman 4745f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // If we come up with an answer which seems sane, use it; otherwise, 4755f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // just point at the __asm keyword. 4765f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman // FIXME: Assert the answer is sane once we handle .macro correctly. 4775f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman SourceLocation Loc = AsmLoc; 4785f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman if (TokIndex < AsmToks.size()) { 4795f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman const Token *Tok = &AsmToks[TokIndex]; 4805f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman Loc = Tok->getLocation(); 4815f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman Loc = Loc.getLocWithOffset(Offset - (*OffsetPtr - Tok->getLength())); 4825f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman } 4835f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman SemaRef.Diag(Loc, diag::err_inline_ms_asm_parsing) << D.getMessage(); 4845f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman } 485d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier}; 486d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 487c6f84cf73e0bc04faacd1a9b7845e014e7fac21eBenjamin Kramer} 488c6f84cf73e0bc04faacd1a9b7845e014e7fac21eBenjamin Kramer 489c337d1457e4600107a1b3793f62ca96a33f1308bChad RosierNamedDecl *Sema::LookupInlineAsmIdentifier(StringRef Name, SourceLocation Loc, 490b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier unsigned &Length, unsigned &Size, 491b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier unsigned &Type, bool &IsVarDecl) { 492b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Length = 1; 493c337d1457e4600107a1b3793f62ca96a33f1308bChad Rosier Size = 0; 494b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Type = 0; 4953973f28f347bf8ca3cca31ea30da235c95701231Chad Rosier IsVarDecl = false; 4967fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier LookupResult Result(*this, &Context.Idents.get(Name), Loc, 4977fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier Sema::LookupOrdinaryName); 4987fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier 4997fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier if (!LookupName(Result, getCurScope())) { 5007fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // If we don't find anything, return null; the AsmParser will assume 5017fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // it is a label of some sort. 5027fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier return 0; 5037fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier } 5047fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier 5057fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier if (!Result.isSingleResult()) { 5067fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // FIXME: Diagnose result. 5077fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier return 0; 5087fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier } 5097fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier 5107fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier NamedDecl *ND = Result.getFoundDecl(); 5117fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier if (isa<VarDecl>(ND) || isa<FunctionDecl>(ND)) { 5123973f28f347bf8ca3cca31ea30da235c95701231Chad Rosier if (VarDecl *Var = dyn_cast<VarDecl>(ND)) { 513b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Type = Context.getTypeInfo(Var->getType()).first; 514b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier QualType Ty = Var->getType(); 515b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier if (Ty->isArrayType()) { 516b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier const ArrayType *ATy = Context.getAsArrayType(Ty); 517b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Length = Type / Context.getTypeInfo(ATy->getElementType()).first; 518b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Type /= Length; // Type is in terms of a single element. 519b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier } 520b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Type /= 8; // Type is in terms of bits, but we want bytes. 521b8b5cbc169c9f6c523ada0d37dd126f7af65f3f8Chad Rosier Size = Length * Type; 5223973f28f347bf8ca3cca31ea30da235c95701231Chad Rosier IsVarDecl = true; 5233973f28f347bf8ca3cca31ea30da235c95701231Chad Rosier } 5247fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier return ND; 5257fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier } 5267fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier 5277fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // FIXME: Handle other kinds of results? (FieldDecl, etc.) 5287fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // FIXME: Diagnose if we find something we can't handle, like a typedef. 5297fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier return 0; 530d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier} 5312735df2eb16acfb92b8cd24e163e3a74a7a4d950Chad Rosier 532802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosierbool Sema::LookupInlineAsmField(StringRef Base, StringRef Member, 533802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier unsigned &Offset, SourceLocation AsmLoc) { 534802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier Offset = 0; 535802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier LookupResult BaseResult(*this, &Context.Idents.get(Base), SourceLocation(), 536802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier LookupOrdinaryName); 537802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 538802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (!LookupName(BaseResult, getCurScope())) 539802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return true; 540802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 541802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (!BaseResult.isSingleResult()) 542802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return true; 543802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 544802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier NamedDecl *FoundDecl = BaseResult.getFoundDecl(); 545802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier const RecordType *RT = 0; 546802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (VarDecl *VD = dyn_cast<VarDecl>(FoundDecl)) { 547802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier RT = VD->getType()->getAs<RecordType>(); 548802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier } else if (TypedefDecl *TD = dyn_cast<TypedefDecl>(FoundDecl)) { 549802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier RT = TD->getUnderlyingType()->getAs<RecordType>(); 550802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier } 551802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (!RT) 552802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return true; 553802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 554802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (RequireCompleteType(AsmLoc, QualType(RT, 0), 0)) 555802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return true; 556802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 557802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier LookupResult FieldResult(*this, &Context.Idents.get(Member), SourceLocation(), 558802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier LookupMemberName); 559802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 560802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (!LookupQualifiedName(FieldResult, RT->getDecl())) 561802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return true; 562802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 563802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier // FIXME: Handle IndirectFieldDecl? 564802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier FieldDecl *FD = dyn_cast<FieldDecl>(FieldResult.getFoundDecl()); 565802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier if (!FD) 566802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return true; 567802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 568802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier const ASTRecordLayout &RL = Context.getASTRecordLayout(RT->getDecl()); 569802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier unsigned i = FD->getFieldIndex(); 570802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier CharUnits Result = Context.toCharUnitsFromBits(RL.getFieldOffset(i)); 571802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier Offset = (unsigned)Result.getQuantity(); 572802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 573802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier return false; 574802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier} 575802f93736a9ae76ffcbd90dbaf1c0b185531bb30Chad Rosier 576b55e602e1dc7952edc7545fab7bb7b15047378f3Chad RosierStmtResult Sema::ActOnMSAsmStmt(SourceLocation AsmLoc, SourceLocation LBraceLoc, 577b55e602e1dc7952edc7545fab7bb7b15047378f3Chad Rosier ArrayRef<Token> AsmToks,SourceLocation EndLoc) { 578e54cba1ec0b0e498ee67d200289035797932e714Chad Rosier SmallVector<IdentifierInfo*, 4> Names; 5797fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier SmallVector<StringRef, 4> ConstraintRefs; 580e54cba1ec0b0e498ee67d200289035797932e714Chad Rosier SmallVector<Expr*, 4> Exprs; 5817fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier SmallVector<StringRef, 4> ClobberRefs; 5824b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 583ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier llvm::Triple TheTriple = Context.getTargetInfo().getTriple(); 584ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier llvm::Triple::ArchType ArchTy = TheTriple.getArch(); 585ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier bool UnsupportedArch = ArchTy != llvm::Triple::x86 && 586ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier ArchTy != llvm::Triple::x86_64; 587ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier if (UnsupportedArch) 588ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier Diag(AsmLoc, diag::err_msasm_unsupported_arch) << TheTriple.getArchName(); 589ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier 5904b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Empty asm statements don't need to instantiate the AsmParser, etc. 591ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier if (UnsupportedArch || AsmToks.empty()) { 592d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier StringRef EmptyAsmStr; 593d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier MSAsmStmt *NS = 594d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier new (Context) MSAsmStmt(Context, AsmLoc, LBraceLoc, /*IsSimple*/ true, 595e54cba1ec0b0e498ee67d200289035797932e714Chad Rosier /*IsVolatile*/ true, AsmToks, /*NumOutputs*/ 0, 5967fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier /*NumInputs*/ 0, Names, ConstraintRefs, Exprs, 5977fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier EmptyAsmStr, ClobberRefs, EndLoc); 598d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier return Owned(NS); 599d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier } 6004b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 6017fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier std::string AsmString; 602cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVector<unsigned, 8> TokOffsets; 6035f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman if (buildMSAsmString(*this, AsmLoc, AsmToks, TokOffsets, AsmString)) 604b0f6b9c94077446ceb29167add2e87fb99733a55Bob Wilson return StmtError(); 60538c71d38e1b2a5f71c086b9c2efa9e8e69fa1bb5Chad Rosier 6064b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier // Get the target specific parser. 6074b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier std::string Error; 608ae07378ff9bf4af9bdd97a4607437ace4c32b7e7Chad Rosier const std::string &TT = TheTriple.getTriple(); 6094b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier const llvm::Target *TheTarget(llvm::TargetRegistry::lookupTarget(TT, Error)); 6104b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 6114b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OwningPtr<llvm::MCAsmInfo> MAI(TheTarget->createMCAsmInfo(TT)); 6124b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OwningPtr<llvm::MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TT)); 6134b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OwningPtr<llvm::MCObjectFileInfo> MOFI(new llvm::MCObjectFileInfo()); 6144b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier OwningPtr<llvm::MCSubtargetInfo> 6154b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier STI(TheTarget->createMCSubtargetInfo(TT, "", "")); 6164b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 617d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier llvm::SourceMgr SrcMgr; 618d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier llvm::MCContext Ctx(*MAI, *MRI, MOFI.get(), &SrcMgr); 619d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier llvm::MemoryBuffer *Buffer = 620d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier llvm::MemoryBuffer::getMemBuffer(AsmString, "<inline asm>"); 621d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 622d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier // Tell SrcMgr about this buffer, which is what the parser will pick up. 623d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier SrcMgr.AddNewSourceBuffer(Buffer, llvm::SMLoc()); 624d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 625d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier OwningPtr<llvm::MCStreamer> Str(createNullStreamer(Ctx)); 626d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier OwningPtr<llvm::MCAsmParser> 627d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier Parser(createMCAsmParser(SrcMgr, Ctx, *Str.get(), *MAI)); 628d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier OwningPtr<llvm::MCTargetAsmParser> 629d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier TargetParser(TheTarget->createMCAsmParser(*STI, *Parser)); 6304b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier 631d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier // Get the instruction descriptor. 632d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier const llvm::MCInstrInfo *MII = TheTarget->createMCInstrInfo(); 633d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier llvm::MCInstPrinter *IP = 634d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier TheTarget->createMCInstPrinter(1, *MAI, *MII, *MRI, *STI); 635d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 636d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier // Change to the Intel dialect. 637d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier Parser->setAssemblerDialect(1); 638d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier Parser->setTargetParser(*TargetParser.get()); 639d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier Parser->setParsingInlineAsm(true); 640cf81cd270e31f97bb88b51e24708e75cc604980eChad Rosier TargetParser->setParsingInlineAsm(true); 641d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier 6425f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman MCAsmParserSemaCallbackImpl MCAPSI(*this, AsmLoc, AsmToks, TokOffsets); 643793c405c28581f24543f021bd833b8c47af28ed3Chad Rosier TargetParser->setSemaCallback(&MCAPSI); 6445f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman SrcMgr.setDiagHandler(MCAsmParserSemaCallbackImpl::MSAsmDiagHandlerCallback, 6455f1385b81b0a6c6878ff1e35118a5b0bf52ca930Eli Friedman &MCAPSI); 646793c405c28581f24543f021bd833b8c47af28ed3Chad Rosier 6477fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier unsigned NumOutputs; 6487fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier unsigned NumInputs; 649d9b56edcf42232c5331f9ad79aae83ba31e852dfChad Rosier std::string AsmStringIR; 6504d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier SmallVector<std::pair<void *, bool>, 4> OpDecls; 6517fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier SmallVector<std::string, 4> Constraints; 6527fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier SmallVector<std::string, 4> Clobbers; 653d6d864fc0674039d1884e6b8d9089f40370af7d8Jim Grosbach if (Parser->parseMSInlineAsm(AsmLoc.getPtrEncoding(), AsmStringIR, 654d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier NumOutputs, NumInputs, OpDecls, Constraints, 655d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier Clobbers, MII, IP, MCAPSI)) 6567fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier return StmtError(); 657b55e602e1dc7952edc7545fab7bb7b15047378f3Chad Rosier 6587fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // Build the vector of clobber StringRefs. 6597fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier unsigned NumClobbers = Clobbers.size(); 6607fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier ClobberRefs.resize(NumClobbers); 6617fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier for (unsigned i = 0; i != NumClobbers; ++i) 6627fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier ClobberRefs[i] = StringRef(Clobbers[i]); 6637fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier 6647fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier // Recast the void pointers and build the vector of constraint StringRefs. 6657fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier unsigned NumExprs = NumOutputs + NumInputs; 6667fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier Names.resize(NumExprs); 6677fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier ConstraintRefs.resize(NumExprs); 6687fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier Exprs.resize(NumExprs); 6697fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier for (unsigned i = 0, e = NumExprs; i != e; ++i) { 6704d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier NamedDecl *OpDecl = static_cast<NamedDecl *>(OpDecls[i].first); 671d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier if (!OpDecl) 672d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier return StmtError(); 673d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier 674d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier DeclarationNameInfo NameInfo(OpDecl->getDeclName(), AsmLoc); 675d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier ExprResult OpExpr = BuildDeclarationNameExpr(CXXScopeSpec(), NameInfo, 676d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier OpDecl); 677d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier if (OpExpr.isInvalid()) 678d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier return StmtError(); 6794d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier 6803973f28f347bf8ca3cca31ea30da235c95701231Chad Rosier // Need address of variable. 6814d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier if (OpDecls[i].second) 6824d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier OpExpr = BuildUnaryOp(getCurScope(), AsmLoc, clang::UO_AddrOf, 6834d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier OpExpr.take()); 6844d5dd7c954842bc5043e45734af17db197654ca0Chad Rosier 685d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier Names[i] = OpDecl->getIdentifier(); 6867fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier ConstraintRefs[i] = StringRef(Constraints[i]); 687d052ebf6ca1a9ae3123a8ee22bc37e58ddb61018Chad Rosier Exprs[i] = OpExpr.take(); 688acc22b6b5a8ba501f896fb0d00afdff5c5a3f090Chad Rosier } 689acc22b6b5a8ba501f896fb0d00afdff5c5a3f090Chad Rosier 6907fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier bool IsSimple = NumExprs > 0; 6914b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier MSAsmStmt *NS = 6927fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier new (Context) MSAsmStmt(Context, AsmLoc, LBraceLoc, IsSimple, 6937fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier /*IsVolatile*/ true, AsmToks, NumOutputs, NumInputs, 6947fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier Names, ConstraintRefs, Exprs, AsmStringIR, 6957fd00b153c991fbe30f9fa76391d2ad9fa1d349dChad Rosier ClobberRefs, EndLoc); 6964b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier return Owned(NS); 6974b5e48d39eb94ee12f3d89df60525053d8b0275eChad Rosier} 698