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-rw-r--r--lib/Sema/SemaStmt.cpp611
1 files changed, 0 insertions, 611 deletions
diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index 86884b7873..bb025a4fb3 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -28,27 +28,10 @@
#include "clang/Lex/Preprocessor.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCInstPrinter.h"
-#include "llvm/MC/MCInstrInfo.h"
-#include "llvm/MC/MCObjectFileInfo.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/MC/MCTargetAsmParser.h"
-#include "llvm/MC/MCParser/MCAsmLexer.h"
-#include "llvm/MC/MCParser/MCAsmParser.h"
-#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/TargetSelect.h"
using namespace clang;
using namespace sema;
@@ -2485,600 +2468,6 @@ Sema::ActOnReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp) {
return Owned(Result);
}
-/// CheckAsmLValue - GNU C has an extremely ugly extension whereby they silently
-/// ignore "noop" casts in places where an lvalue is required by an inline asm.
-/// We emulate this behavior when -fheinous-gnu-extensions is specified, but
-/// provide a strong guidance to not use it.
-///
-/// This method checks to see if the argument is an acceptable l-value and
-/// returns false if it is a case we can handle.
-static bool CheckAsmLValue(const Expr *E, Sema &S) {
- // Type dependent expressions will be checked during instantiation.
- if (E->isTypeDependent())
- return false;
-
- if (E->isLValue())
- return false; // Cool, this is an lvalue.
-
- // Okay, this is not an lvalue, but perhaps it is the result of a cast that we
- // are supposed to allow.
- const Expr *E2 = E->IgnoreParenNoopCasts(S.Context);
- if (E != E2 && E2->isLValue()) {
- if (!S.getLangOpts().HeinousExtensions)
- S.Diag(E2->getLocStart(), diag::err_invalid_asm_cast_lvalue)
- << E->getSourceRange();
- else
- S.Diag(E2->getLocStart(), diag::warn_invalid_asm_cast_lvalue)
- << E->getSourceRange();
- // Accept, even if we emitted an error diagnostic.
- return false;
- }
-
- // None of the above, just randomly invalid non-lvalue.
- return true;
-}
-
-/// isOperandMentioned - Return true if the specified operand # is mentioned
-/// anywhere in the decomposed asm string.
-static bool isOperandMentioned(unsigned OpNo,
- ArrayRef<AsmStmt::AsmStringPiece> AsmStrPieces) {
- for (unsigned p = 0, e = AsmStrPieces.size(); p != e; ++p) {
- const AsmStmt::AsmStringPiece &Piece = AsmStrPieces[p];
- if (!Piece.isOperand()) continue;
-
- // If this is a reference to the input and if the input was the smaller
- // one, then we have to reject this asm.
- if (Piece.getOperandNo() == OpNo)
- return true;
- }
- return false;
-}
-
-StmtResult Sema::ActOnAsmStmt(SourceLocation AsmLoc, bool IsSimple,
- bool IsVolatile, unsigned NumOutputs,
- unsigned NumInputs, IdentifierInfo **Names,
- MultiExprArg constraints, MultiExprArg exprs,
- Expr *asmString, MultiExprArg clobbers,
- SourceLocation RParenLoc, bool MSAsm) {
- unsigned NumClobbers = clobbers.size();
- StringLiteral **Constraints =
- reinterpret_cast<StringLiteral**>(constraints.get());
- Expr **Exprs = exprs.get();
- StringLiteral *AsmString = cast<StringLiteral>(asmString);
- StringLiteral **Clobbers = reinterpret_cast<StringLiteral**>(clobbers.get());
-
- SmallVector<TargetInfo::ConstraintInfo, 4> OutputConstraintInfos;
-
- // The parser verifies that there is a string literal here.
- if (!AsmString->isAscii())
- return StmtError(Diag(AsmString->getLocStart(),diag::err_asm_wide_character)
- << AsmString->getSourceRange());
-
- for (unsigned i = 0; i != NumOutputs; i++) {
- StringLiteral *Literal = Constraints[i];
- if (!Literal->isAscii())
- return StmtError(Diag(Literal->getLocStart(),diag::err_asm_wide_character)
- << Literal->getSourceRange());
-
- StringRef OutputName;
- if (Names[i])
- OutputName = Names[i]->getName();
-
- TargetInfo::ConstraintInfo Info(Literal->getString(), OutputName);
- if (!Context.getTargetInfo().validateOutputConstraint(Info))
- return StmtError(Diag(Literal->getLocStart(),
- diag::err_asm_invalid_output_constraint)
- << Info.getConstraintStr());
-
- // Check that the output exprs are valid lvalues.
- Expr *OutputExpr = Exprs[i];
- if (CheckAsmLValue(OutputExpr, *this)) {
- return StmtError(Diag(OutputExpr->getLocStart(),
- diag::err_asm_invalid_lvalue_in_output)
- << OutputExpr->getSourceRange());
- }
-
- OutputConstraintInfos.push_back(Info);
- }
-
- SmallVector<TargetInfo::ConstraintInfo, 4> InputConstraintInfos;
-
- for (unsigned i = NumOutputs, e = NumOutputs + NumInputs; i != e; i++) {
- StringLiteral *Literal = Constraints[i];
- if (!Literal->isAscii())
- return StmtError(Diag(Literal->getLocStart(),diag::err_asm_wide_character)
- << Literal->getSourceRange());
-
- StringRef InputName;
- if (Names[i])
- InputName = Names[i]->getName();
-
- TargetInfo::ConstraintInfo Info(Literal->getString(), InputName);
- if (!Context.getTargetInfo().validateInputConstraint(OutputConstraintInfos.data(),
- NumOutputs, Info)) {
- return StmtError(Diag(Literal->getLocStart(),
- diag::err_asm_invalid_input_constraint)
- << Info.getConstraintStr());
- }
-
- Expr *InputExpr = Exprs[i];
-
- // Only allow void types for memory constraints.
- if (Info.allowsMemory() && !Info.allowsRegister()) {
- if (CheckAsmLValue(InputExpr, *this))
- return StmtError(Diag(InputExpr->getLocStart(),
- diag::err_asm_invalid_lvalue_in_input)
- << Info.getConstraintStr()
- << InputExpr->getSourceRange());
- }
-
- if (Info.allowsRegister()) {
- if (InputExpr->getType()->isVoidType()) {
- return StmtError(Diag(InputExpr->getLocStart(),
- diag::err_asm_invalid_type_in_input)
- << InputExpr->getType() << Info.getConstraintStr()
- << InputExpr->getSourceRange());
- }
- }
-
- ExprResult Result = DefaultFunctionArrayLvalueConversion(Exprs[i]);
- if (Result.isInvalid())
- return StmtError();
-
- Exprs[i] = Result.take();
- InputConstraintInfos.push_back(Info);
- }
-
- // Check that the clobbers are valid.
- for (unsigned i = 0; i != NumClobbers; i++) {
- StringLiteral *Literal = Clobbers[i];
- if (!Literal->isAscii())
- return StmtError(Diag(Literal->getLocStart(),diag::err_asm_wide_character)
- << Literal->getSourceRange());
-
- StringRef Clobber = Literal->getString();
-
- if (!Context.getTargetInfo().isValidClobber(Clobber))
- return StmtError(Diag(Literal->getLocStart(),
- diag::err_asm_unknown_register_name) << Clobber);
- }
-
- AsmStmt *NS =
- new (Context) AsmStmt(Context, AsmLoc, IsSimple, IsVolatile, MSAsm,
- NumOutputs, NumInputs, Names, Constraints, Exprs,
- AsmString, NumClobbers, Clobbers, RParenLoc);
- // Validate the asm string, ensuring it makes sense given the operands we
- // have.
- SmallVector<AsmStmt::AsmStringPiece, 8> Pieces;
- unsigned DiagOffs;
- if (unsigned DiagID = NS->AnalyzeAsmString(Pieces, Context, DiagOffs)) {
- Diag(getLocationOfStringLiteralByte(AsmString, DiagOffs), DiagID)
- << AsmString->getSourceRange();
- return StmtError();
- }
-
- // Validate tied input operands for type mismatches.
- for (unsigned i = 0, e = InputConstraintInfos.size(); i != e; ++i) {
- TargetInfo::ConstraintInfo &Info = InputConstraintInfos[i];
-
- // If this is a tied constraint, verify that the output and input have
- // either exactly the same type, or that they are int/ptr operands with the
- // same size (int/long, int*/long, are ok etc).
- if (!Info.hasTiedOperand()) continue;
-
- unsigned TiedTo = Info.getTiedOperand();
- unsigned InputOpNo = i+NumOutputs;
- Expr *OutputExpr = Exprs[TiedTo];
- Expr *InputExpr = Exprs[InputOpNo];
-
- if (OutputExpr->isTypeDependent() || InputExpr->isTypeDependent())
- continue;
-
- QualType InTy = InputExpr->getType();
- QualType OutTy = OutputExpr->getType();
- if (Context.hasSameType(InTy, OutTy))
- continue; // All types can be tied to themselves.
-
- // Decide if the input and output are in the same domain (integer/ptr or
- // floating point.
- enum AsmDomain {
- AD_Int, AD_FP, AD_Other
- } InputDomain, OutputDomain;
-
- if (InTy->isIntegerType() || InTy->isPointerType())
- InputDomain = AD_Int;
- else if (InTy->isRealFloatingType())
- InputDomain = AD_FP;
- else
- InputDomain = AD_Other;
-
- if (OutTy->isIntegerType() || OutTy->isPointerType())
- OutputDomain = AD_Int;
- else if (OutTy->isRealFloatingType())
- OutputDomain = AD_FP;
- else
- OutputDomain = AD_Other;
-
- // They are ok if they are the same size and in the same domain. This
- // allows tying things like:
- // void* to int*
- // void* to int if they are the same size.
- // double to long double if they are the same size.
- //
- uint64_t OutSize = Context.getTypeSize(OutTy);
- uint64_t InSize = Context.getTypeSize(InTy);
- if (OutSize == InSize && InputDomain == OutputDomain &&
- InputDomain != AD_Other)
- continue;
-
- // If the smaller input/output operand is not mentioned in the asm string,
- // then we can promote the smaller one to a larger input and the asm string
- // won't notice.
- bool SmallerValueMentioned = false;
-
- // If this is a reference to the input and if the input was the smaller
- // one, then we have to reject this asm.
- if (isOperandMentioned(InputOpNo, Pieces)) {
- // This is a use in the asm string of the smaller operand. Since we
- // codegen this by promoting to a wider value, the asm will get printed
- // "wrong".
- SmallerValueMentioned |= InSize < OutSize;
- }
- if (isOperandMentioned(TiedTo, Pieces)) {
- // If this is a reference to the output, and if the output is the larger
- // value, then it's ok because we'll promote the input to the larger type.
- SmallerValueMentioned |= OutSize < InSize;
- }
-
- // If the smaller value wasn't mentioned in the asm string, and if the
- // output was a register, just extend the shorter one to the size of the
- // larger one.
- if (!SmallerValueMentioned && InputDomain != AD_Other &&
- OutputConstraintInfos[TiedTo].allowsRegister())
- continue;
-
- // Either both of the operands were mentioned or the smaller one was
- // mentioned. One more special case that we'll allow: if the tied input is
- // integer, unmentioned, and is a constant, then we'll allow truncating it
- // down to the size of the destination.
- if (InputDomain == AD_Int && OutputDomain == AD_Int &&
- !isOperandMentioned(InputOpNo, Pieces) &&
- InputExpr->isEvaluatable(Context)) {
- CastKind castKind =
- (OutTy->isBooleanType() ? CK_IntegralToBoolean : CK_IntegralCast);
- InputExpr = ImpCastExprToType(InputExpr, OutTy, castKind).take();
- Exprs[InputOpNo] = InputExpr;
- NS->setInputExpr(i, InputExpr);
- continue;
- }
-
- Diag(InputExpr->getLocStart(),
- diag::err_asm_tying_incompatible_types)
- << InTy << OutTy << OutputExpr->getSourceRange()
- << InputExpr->getSourceRange();
- return StmtError();
- }
-
- return Owned(NS);
-}
-
-// isMSAsmKeyword - Return true if this is an MS-style inline asm keyword. These
-// require special handling.
-static bool isMSAsmKeyword(StringRef Name) {
- bool Ret = llvm::StringSwitch<bool>(Name)
- .Cases("EVEN", "ALIGN", true) // Alignment directives.
- .Cases("LENGTH", "SIZE", "TYPE", true) // Type and variable sizes.
- .Case("_emit", true) // _emit Pseudoinstruction.
- .Default(false);
- return Ret;
-}
-
-static StringRef getSpelling(Sema &SemaRef, Token AsmTok) {
- StringRef Asm;
- SmallString<512> TokenBuf;
- TokenBuf.resize(512);
- bool StringInvalid = false;
- Asm = SemaRef.PP.getSpelling(AsmTok, TokenBuf, &StringInvalid);
- assert (!StringInvalid && "Expected valid string!");
- return Asm;
-}
-
-static void patchMSAsmStrings(Sema &SemaRef, bool &IsSimple,
- SourceLocation AsmLoc,
- ArrayRef<Token> AsmToks,
- const TargetInfo &TI,
- std::vector<llvm::BitVector> &AsmRegs,
- std::vector<llvm::BitVector> &AsmNames,
- std::vector<std::string> &AsmStrings) {
- assert (!AsmToks.empty() && "Didn't expect an empty AsmToks!");
-
- // Assume simple asm stmt until we parse a non-register identifer (or we just
- // need to bail gracefully).
- IsSimple = true;
-
- SmallString<512> Asm;
- unsigned NumAsmStrings = 0;
- for (unsigned i = 0, e = AsmToks.size(); i != e; ++i) {
-
- // Determine if this should be considered a new asm.
- bool isNewAsm = i == 0 || AsmToks[i].isAtStartOfLine() ||
- AsmToks[i].is(tok::kw_asm);
-
- // Emit the previous asm string.
- if (i && isNewAsm) {
- AsmStrings[NumAsmStrings++] = Asm.c_str();
- if (AsmToks[i].is(tok::kw_asm)) {
- ++i; // Skip __asm
- assert (i != e && "Expected another token.");
- }
- }
-
- // Start a new asm string with the opcode.
- if (isNewAsm) {
- AsmRegs[NumAsmStrings].resize(AsmToks.size());
- AsmNames[NumAsmStrings].resize(AsmToks.size());
-
- StringRef Piece = AsmToks[i].getIdentifierInfo()->getName();
- // MS-style inline asm keywords require special handling.
- if (isMSAsmKeyword(Piece))
- IsSimple = false;
-
- // TODO: Verify this is a valid opcode.
- Asm = Piece;
- continue;
- }
-
- if (i && AsmToks[i].hasLeadingSpace())
- Asm += ' ';
-
- // Check the operand(s).
- switch (AsmToks[i].getKind()) {
- default:
- IsSimple = false;
- Asm += getSpelling(SemaRef, AsmToks[i]);
- break;
- case tok::comma: Asm += ","; break;
- case tok::colon: Asm += ":"; break;
- case tok::l_square: Asm += "["; break;
- case tok::r_square: Asm += "]"; break;
- case tok::l_brace: Asm += "{"; break;
- case tok::r_brace: Asm += "}"; break;
- case tok::numeric_constant:
- Asm += getSpelling(SemaRef, AsmToks[i]);
- break;
- case tok::identifier: {
- IdentifierInfo *II = AsmToks[i].getIdentifierInfo();
- StringRef Name = II->getName();
-
- // Valid register?
- if (TI.isValidGCCRegisterName(Name)) {
- AsmRegs[NumAsmStrings].set(i);
- Asm += Name;
- break;
- }
-
- IsSimple = false;
-
- // MS-style inline asm keywords require special handling.
- if (isMSAsmKeyword(Name)) {
- IsSimple = false;
- Asm += Name;
- break;
- }
-
- // FIXME: Why are we missing this segment register?
- if (Name == "fs") {
- Asm += Name;
- break;
- }
-
- // Lookup the identifier.
- // TODO: Someone with more experience with clang should verify this the
- // proper way of doing a symbol lookup.
- DeclarationName DeclName(II);
- Scope *CurScope = SemaRef.getCurScope();
- LookupResult R(SemaRef, DeclName, AsmLoc, Sema::LookupOrdinaryName);
- if (!SemaRef.LookupName(R, CurScope, false/*AllowBuiltinCreation*/))
- break;
-
- assert (R.isSingleResult() && "Expected a single result?!");
- NamedDecl *Decl = R.getFoundDecl();
- switch (Decl->getKind()) {
- default:
- assert(0 && "Unknown decl kind.");
- break;
- case Decl::Var: {
- case Decl::ParmVar:
- AsmNames[NumAsmStrings].set(i);
-
- VarDecl *Var = cast<VarDecl>(Decl);
- QualType Ty = Var->getType();
- (void)Ty; // Avoid warning.
- // TODO: Patch identifier with valid operand. One potential idea is to
- // probe the backend with type information to guess the possible
- // operand.
- break;
- }
- }
- break;
- }
- }
- }
-
- // Emit the final (and possibly only) asm string.
- AsmStrings[NumAsmStrings] = Asm.c_str();
-}
-
-// Build the unmodified MSAsmString.
-static std::string buildMSAsmString(Sema &SemaRef,
- ArrayRef<Token> AsmToks,
- unsigned &NumAsmStrings) {
- assert (!AsmToks.empty() && "Didn't expect an empty AsmToks!");
- NumAsmStrings = 0;
-
- SmallString<512> Asm;
- for (unsigned i = 0, e = AsmToks.size(); i < e; ++i) {
- bool isNewAsm = i == 0 || AsmToks[i].isAtStartOfLine() ||
- AsmToks[i].is(tok::kw_asm);
-
- if (isNewAsm) {
- ++NumAsmStrings;
- if (i)
- Asm += '\n';
- if (AsmToks[i].is(tok::kw_asm)) {
- i++; // Skip __asm
- assert (i != e && "Expected another token");
- }
- }
-
- if (i && AsmToks[i].hasLeadingSpace() && !isNewAsm)
- Asm += ' ';
-
- Asm += getSpelling(SemaRef, AsmToks[i]);
- }
- return Asm.c_str();
-}
-
-StmtResult Sema::ActOnMSAsmStmt(SourceLocation AsmLoc,
- SourceLocation LBraceLoc,
- ArrayRef<Token> AsmToks,
- SourceLocation EndLoc) {
- // MS-style inline assembly is not fully supported, so emit a warning.
- Diag(AsmLoc, diag::warn_unsupported_msasm);
- SmallVector<StringRef,4> Clobbers;
- std::set<std::string> ClobberRegs;
- SmallVector<IdentifierInfo*, 4> Inputs;
- SmallVector<IdentifierInfo*, 4> Outputs;
-
- // Empty asm statements don't need to instantiate the AsmParser, etc.
- if (AsmToks.empty()) {
- StringRef AsmString;
- MSAsmStmt *NS =
- new (Context) MSAsmStmt(Context, AsmLoc, LBraceLoc, /*IsSimple*/ true,
- /*IsVolatile*/ true, AsmToks, Inputs, Outputs,
- AsmString, Clobbers, EndLoc);
- return Owned(NS);
- }
-
- unsigned NumAsmStrings;
- std::string AsmString = buildMSAsmString(*this, AsmToks, NumAsmStrings);
-
- bool IsSimple;
- std::vector<llvm::BitVector> Regs;
- std::vector<llvm::BitVector> Names;
- std::vector<std::string> PatchedAsmStrings;
-
- Regs.resize(NumAsmStrings);
- Names.resize(NumAsmStrings);
- PatchedAsmStrings.resize(NumAsmStrings);
-
- // Rewrite operands to appease the AsmParser.
- patchMSAsmStrings(*this, IsSimple, AsmLoc, AsmToks,
- Context.getTargetInfo(), Regs, Names, PatchedAsmStrings);
-
- // patchMSAsmStrings doesn't correctly patch non-simple asm statements.
- if (!IsSimple) {
- MSAsmStmt *NS =
- new (Context) MSAsmStmt(Context, AsmLoc, LBraceLoc, /*IsSimple*/ true,
- /*IsVolatile*/ true, AsmToks, Inputs, Outputs,
- AsmString, Clobbers, EndLoc);
- return Owned(NS);
- }
-
- // Initialize targets and assembly printers/parsers.
- llvm::InitializeAllTargetInfos();
- llvm::InitializeAllTargetMCs();
- llvm::InitializeAllAsmParsers();
-
- // Get the target specific parser.
- std::string Error;
- const std::string &TT = Context.getTargetInfo().getTriple().getTriple();
- const llvm::Target *TheTarget(llvm::TargetRegistry::lookupTarget(TT, Error));
-
- OwningPtr<llvm::MCAsmInfo> MAI(TheTarget->createMCAsmInfo(TT));
- OwningPtr<llvm::MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TT));
- OwningPtr<llvm::MCObjectFileInfo> MOFI(new llvm::MCObjectFileInfo());
- OwningPtr<llvm::MCSubtargetInfo>
- STI(TheTarget->createMCSubtargetInfo(TT, "", ""));
-
- for (unsigned i = 0, e = PatchedAsmStrings.size(); i != e; ++i) {
- llvm::SourceMgr SrcMgr;
- llvm::MCContext Ctx(*MAI, *MRI, MOFI.get(), &SrcMgr);
- llvm::MemoryBuffer *Buffer =
- llvm::MemoryBuffer::getMemBuffer(PatchedAsmStrings[i], "<inline asm>");
-
- // Tell SrcMgr about this buffer, which is what the parser will pick up.
- SrcMgr.AddNewSourceBuffer(Buffer, llvm::SMLoc());
-
- OwningPtr<llvm::MCStreamer> Str(createNullStreamer(Ctx));
- OwningPtr<llvm::MCAsmParser>
- Parser(createMCAsmParser(SrcMgr, Ctx, *Str.get(), *MAI));
- OwningPtr<llvm::MCTargetAsmParser>
- TargetParser(TheTarget->createMCAsmParser(*STI, *Parser));
- // Change to the Intel dialect.
- Parser->setAssemblerDialect(1);
- Parser->setTargetParser(*TargetParser.get());
-
- // Prime the lexer.
- Parser->Lex();
-
- // Parse the opcode.
- StringRef IDVal;
- Parser->ParseIdentifier(IDVal);
-
- // Canonicalize the opcode to lower case.
- SmallString<128> Opcode;
- for (unsigned i = 0, e = IDVal.size(); i != e; ++i)
- Opcode.push_back(tolower(IDVal[i]));
-
- // Parse the operands.
- llvm::SMLoc IDLoc;
- SmallVector<llvm::MCParsedAsmOperand*, 8> Operands;
- bool HadError = TargetParser->ParseInstruction(Opcode.str(), IDLoc,
- Operands);
- assert (!HadError && "Unexpected error parsing instruction");
-
- // Match the MCInstr.
- SmallVector<llvm::MCInst, 2> Instrs;
- HadError = TargetParser->MatchInstruction(IDLoc, Operands, Instrs);
- assert (!HadError && "Unexpected error matching instruction");
- assert ((Instrs.size() == 1) && "Expected only a single instruction.");
-
- // Get the instruction descriptor.
- llvm::MCInst Inst = Instrs[0];
- const llvm::MCInstrInfo *MII = TheTarget->createMCInstrInfo();
- const llvm::MCInstrDesc &Desc = MII->get(Inst.getOpcode());
- llvm::MCInstPrinter *IP =
- TheTarget->createMCInstPrinter(1, *MAI, *MII, *MRI, *STI);
-
- // Build the list of clobbers.
- for (unsigned i = 0, e = Desc.getNumDefs(); i != e; ++i) {
- const llvm::MCOperand &Op = Inst.getOperand(i);
- if (!Op.isReg())
- continue;
-
- std::string Reg;
- llvm::raw_string_ostream OS(Reg);
- IP->printRegName(OS, Op.getReg());
-
- StringRef Clobber(OS.str());
- if (!Context.getTargetInfo().isValidClobber(Clobber))
- return StmtError(Diag(AsmLoc, diag::err_asm_unknown_register_name) <<
- Clobber);
- ClobberRegs.insert(Reg);
- }
- }
- for (std::set<std::string>::iterator I = ClobberRegs.begin(),
- E = ClobberRegs.end(); I != E; ++I)
- Clobbers.push_back(*I);
-
- MSAsmStmt *NS =
- new (Context) MSAsmStmt(Context, AsmLoc, LBraceLoc, IsSimple,
- /*IsVolatile*/ true, AsmToks, Inputs, Outputs,
- AsmString, Clobbers, EndLoc);
- return Owned(NS);
-}
-
StmtResult
Sema::ActOnObjCAtCatchStmt(SourceLocation AtLoc,
SourceLocation RParen, Decl *Parm,
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