forked from OSchip/llvm-project
Under duress, move check for target support of __builtin_setjmp/
__builtin_longjmp to Sema as requested by John McCall. llvm-svn: 231986
This commit is contained in:
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3c2ea3106c
commit
27173288c2
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@ -7053,6 +7053,11 @@ def note_neon_vector_initializer_non_portable_q : Note<
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"vcombine_%0%1(vcreate_%0%1(), vcreate_%0%1()) to initialize from integer "
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"constants">;
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def err_builtin_longjmp_unsupported : Error<
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"__builtin_longjmp is not supported for the current target">;
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def err_builtin_setjmp_unsupported : Error<
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"__builtin_setjmp is not supported for the current target">;
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def err_builtin_longjmp_invalid_val : Error<
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"argument to __builtin_longjmp must be a constant 1">;
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def err_builtin_requires_language : Error<"'%0' is only available in %1">;
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@ -859,6 +859,12 @@ public:
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}
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}
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/// Controls if __builtin_longjmp / __builtin_setjmp can be lowered to
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/// llvm.eh.sjlj.longjmp / llvm.eh.sjlj.setjmp.
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virtual bool hasSjLjLowering() const {
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return false;
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}
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protected:
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virtual uint64_t getPointerWidthV(unsigned AddrSpace) const {
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return PointerWidth;
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@ -8556,6 +8556,7 @@ private:
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bool SemaBuiltinAssume(CallExpr *TheCall);
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bool SemaBuiltinAssumeAligned(CallExpr *TheCall);
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bool SemaBuiltinLongjmp(CallExpr *TheCall);
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bool SemaBuiltinSetjmp(CallExpr *TheCall);
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ExprResult SemaBuiltinAtomicOverloaded(ExprResult TheCallResult);
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ExprResult SemaAtomicOpsOverloaded(ExprResult TheCallResult,
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AtomicExpr::AtomicOp Op);
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@ -981,6 +981,10 @@ public:
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if (RegNo == 1) return 4;
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return -1;
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}
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bool hasSjLjLowering() const override {
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return true;
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}
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};
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const Builtin::Info PPCTargetInfo::BuiltinInfo[] = {
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@ -2271,6 +2275,10 @@ public:
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CallingConv getDefaultCallingConv(CallingConvMethodType MT) const override {
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return MT == CCMT_Member ? CC_X86ThisCall : CC_C;
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}
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bool hasSjLjLowering() const override {
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return true;
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}
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};
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bool X86TargetInfo::setFPMath(StringRef Name) {
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@ -859,11 +859,6 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
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return RValue::get(Builder.CreateZExt(Result, Int64Ty, "extend.zext"));
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}
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case Builtin::BI__builtin_setjmp: {
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if (!getTargetHooks().hasSjLjLowering(*this)) {
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CGM.ErrorUnsupported(E, "__builtin_setjmp");
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return RValue::get(nullptr);
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}
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// Buffer is a void**.
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Value *Buf = EmitScalarExpr(E->getArg(0));
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@ -886,10 +881,6 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
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return RValue::get(Builder.CreateCall(F, Buf));
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}
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case Builtin::BI__builtin_longjmp: {
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if (!getTargetHooks().hasSjLjLowering(*this)) {
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CGM.ErrorUnsupported(E, "__builtin_longjmp");
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return RValue::get(nullptr);
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}
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Value *Buf = EmitScalarExpr(E->getArg(0));
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Buf = Builder.CreateBitCast(Buf, Int8PtrTy);
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@ -664,10 +664,6 @@ public:
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('T' << 24);
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return llvm::ConstantInt::get(CGM.Int32Ty, Sig);
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return true;
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}
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};
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}
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@ -1613,10 +1609,6 @@ public:
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unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
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return HasAVX ? 32 : 16;
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return true;
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}
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};
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class PS4TargetCodeGenInfo : public X86_64TargetCodeGenInfo {
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@ -1724,10 +1716,6 @@ public:
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unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
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return HasAVX ? 32 : 16;
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return true;
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}
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};
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void WinX86_64TargetCodeGenInfo::SetTargetAttributes(const Decl *D,
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@ -3127,10 +3115,6 @@ public:
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unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
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return 16; // Natural alignment for Altivec vectors.
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return true;
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}
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};
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}
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@ -3381,10 +3365,6 @@ public:
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return 16; // Natural alignment for Altivec and VSX vectors.
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return true;
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}
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};
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class PPC64TargetCodeGenInfo : public DefaultTargetCodeGenInfo {
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@ -3402,10 +3382,6 @@ public:
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unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
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return 16; // Natural alignment for Altivec vectors.
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return true;
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}
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};
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}
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@ -4533,12 +4509,6 @@ public:
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llvm::AttributeSet::FunctionIndex,
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B));
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}
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bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const override {
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return false;
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// FIXME: backend implementation too restricted, even on Darwin.
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// return CGF.getTarget().getTriple().isOSDarwin();
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}
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};
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class WindowsARMTargetCodeGenInfo : public ARMTargetCodeGenInfo {
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@ -225,12 +225,6 @@ public:
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virtual unsigned getOpenMPSimdDefaultAlignment(QualType Type) const {
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return 0;
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}
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/// Control if __builtin_longjmp / __builtin_setjmp can be lowered to
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/// llvm.eh.sjlj.longjmp / llvm.eh.sjlj.setjmp.
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virtual bool hasSjLjLowering(CodeGen::CodeGenFunction &CGF) const {
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return false;
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}
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};
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}
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@ -319,6 +319,10 @@ Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID,
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if (SemaBuiltinLongjmp(TheCall))
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return ExprError();
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break;
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case Builtin::BI__builtin_setjmp:
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if (SemaBuiltinSetjmp(TheCall))
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return ExprError();
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break;
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case Builtin::BI__builtin_classify_type:
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if (checkArgCount(*this, TheCall, 1)) return true;
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@ -2457,8 +2461,13 @@ bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum,
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}
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/// SemaBuiltinLongjmp - Handle __builtin_longjmp(void *env[5], int val).
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/// This checks that val is a constant 1.
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/// This checks that the target supports __builtin_longjmp and
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/// that val is a constant 1.
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bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) {
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if (!Context.getTargetInfo().hasSjLjLowering())
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return Diag(TheCall->getLocStart(), diag::err_builtin_longjmp_unsupported)
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<< SourceRange(TheCall->getLocStart(), TheCall->getLocEnd());
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Expr *Arg = TheCall->getArg(1);
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llvm::APSInt Result;
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@ -2473,6 +2482,16 @@ bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) {
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return false;
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}
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/// SemaBuiltinSetjmp - Handle __builtin_setjmp(void *env[5]).
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/// This checks that the target supports __builtin_setjmp.
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bool Sema::SemaBuiltinSetjmp(CallExpr *TheCall) {
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if (!Context.getTargetInfo().hasSjLjLowering())
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return Diag(TheCall->getLocStart(), diag::err_builtin_setjmp_unsupported)
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<< SourceRange(TheCall->getLocStart(), TheCall->getLocEnd());
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return false;
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}
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namespace {
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enum StringLiteralCheckType {
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SLCT_NotALiteral,
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@ -9,9 +9,9 @@
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// RUN: %clang_cc1 -triple mips-unknown-unknown -emit-llvm-only -verify %s
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// RUN: %clang_cc1 -triple mips64-unknown-unknown -emit-llvm-only -verify %s
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// Check that __builtin_longjmp and __builtin_setjmp are lowerd into
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// Check that __builtin_longjmp and __builtin_setjmp are lowered into
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// IR intrinsics on those architectures that can handle them.
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// Check that they are lowered to the libcalls on other architectures.
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// Check that an error is created otherwise.
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typedef void *jmp_buf;
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jmp_buf buf;
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// CHECK: call{{.*}} i32 @llvm.eh.sjlj.setjmp
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void do_jump(void) {
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__builtin_longjmp(buf, 1); // expected-error {{cannot compile this __builtin_longjmp yet}}
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__builtin_longjmp(buf, 1); // expected-error {{__builtin_longjmp is not supported for the current target}}
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}
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void f(void);
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void do_setjmp(void) {
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if (!__builtin_setjmp(buf))
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if (!__builtin_setjmp(buf)) // expected-error {{__builtin_setjmp is not supported for the current target}}
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f();
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}
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