Add deactivation symbol operand to ConstantPtrAuth. #133537
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@llvm/pr-subscribers-backend-aarch64 @llvm/pr-subscribers-llvm-transforms Author: Peter Collingbourne (pcc) ChangesDeactivation symbol operands are supported in the code generator by TODO:
Patch is 22.34 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/133537.diff 16 Files Affected:
diff --git a/clang/lib/CodeGen/CGPointerAuth.cpp b/clang/lib/CodeGen/CGPointerAuth.cpp
index 4b032306ead72..2d72fef470af6 100644
--- a/clang/lib/CodeGen/CGPointerAuth.cpp
+++ b/clang/lib/CodeGen/CGPointerAuth.cpp
@@ -308,9 +308,9 @@ CodeGenModule::getConstantSignedPointer(llvm::Constant *Pointer, unsigned Key,
IntegerDiscriminator = llvm::ConstantInt::get(Int64Ty, 0);
}
- return llvm::ConstantPtrAuth::get(Pointer,
- llvm::ConstantInt::get(Int32Ty, Key),
- IntegerDiscriminator, AddressDiscriminator);
+ return llvm::ConstantPtrAuth::get(
+ Pointer, llvm::ConstantInt::get(Int32Ty, Key), IntegerDiscriminator,
+ AddressDiscriminator, llvm::Constant::getNullValue(UnqualPtrTy));
}
/// Does a given PointerAuthScheme require us to sign a value
diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
index ec2535ac85966..13521ba6cd00f 100644
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -431,6 +431,7 @@ enum ConstantsCodes {
CST_CODE_CE_GEP_WITH_INRANGE = 31, // [opty, flags, range, n x operands]
CST_CODE_CE_GEP = 32, // [opty, flags, n x operands]
CST_CODE_PTRAUTH = 33, // [ptr, key, disc, addrdisc]
+ CST_CODE_PTRAUTH2 = 34, // [ptr, key, disc, addrdisc, DeactivationSymbol]
};
/// CastOpcodes - These are values used in the bitcode files to encode which
diff --git a/llvm/include/llvm/IR/Constants.h b/llvm/include/llvm/IR/Constants.h
index a50217078d0ed..45d5352bf06a6 100644
--- a/llvm/include/llvm/IR/Constants.h
+++ b/llvm/include/llvm/IR/Constants.h
@@ -1022,10 +1022,10 @@ class ConstantPtrAuth final : public Constant {
friend struct ConstantPtrAuthKeyType;
friend class Constant;
- constexpr static IntrusiveOperandsAllocMarker AllocMarker{4};
+ constexpr static IntrusiveOperandsAllocMarker AllocMarker{5};
ConstantPtrAuth(Constant *Ptr, ConstantInt *Key, ConstantInt *Disc,
- Constant *AddrDisc);
+ Constant *AddrDisc, Constant *DeactivationSymbol);
void *operator new(size_t s) { return User::operator new(s, AllocMarker); }
@@ -1035,7 +1035,8 @@ class ConstantPtrAuth final : public Constant {
public:
/// Return a pointer signed with the specified parameters.
static ConstantPtrAuth *get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc);
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol);
/// Produce a new ptrauth expression signing the given value using
/// the same schema as is stored in one.
@@ -1067,6 +1068,10 @@ class ConstantPtrAuth final : public Constant {
return !getAddrDiscriminator()->isNullValue();
}
+ Constant *getDeactivationSymbol() const {
+ return cast<Constant>(Op<4>().get());
+ }
+
/// A constant value for the address discriminator which has special
/// significance to ctors/dtors lowering. Regular address discrimination can't
/// be applied for them since uses of llvm.global_{c|d}tors are disallowed
@@ -1094,7 +1099,7 @@ class ConstantPtrAuth final : public Constant {
template <>
struct OperandTraits<ConstantPtrAuth>
- : public FixedNumOperandTraits<ConstantPtrAuth, 4> {};
+ : public FixedNumOperandTraits<ConstantPtrAuth, 5> {};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ConstantPtrAuth, Constant)
diff --git a/llvm/include/llvm/SandboxIR/Constant.h b/llvm/include/llvm/SandboxIR/Constant.h
index 17f55e973cd76..5243a9476ac64 100644
--- a/llvm/include/llvm/SandboxIR/Constant.h
+++ b/llvm/include/llvm/SandboxIR/Constant.h
@@ -1096,7 +1096,8 @@ class ConstantPtrAuth final : public Constant {
public:
/// Return a pointer signed with the specified parameters.
static ConstantPtrAuth *get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc);
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol);
/// The pointer that is signed in this ptrauth signed pointer.
Constant *getPointer() const;
@@ -1111,6 +1112,8 @@ class ConstantPtrAuth final : public Constant {
/// the only global-initializer user of the ptrauth signed pointer.
Constant *getAddrDiscriminator() const;
+ Constant *getDeactivationSymbol() const;
+
/// Whether there is any non-null address discriminator.
bool hasAddressDiscriminator() const {
return cast<llvm::ConstantPtrAuth>(Val)->hasAddressDiscriminator();
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 960119bab0933..dfa014aa0bd7d 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -4226,11 +4226,12 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
}
case lltok::kw_ptrauth: {
// ValID ::= 'ptrauth' '(' ptr @foo ',' i32 <key>
- // (',' i64 <disc> (',' ptr addrdisc)? )? ')'
+ // (',' i64 <disc> (',' ptr addrdisc (',' ptr ds)? )? )? ')'
Lex.Lex();
Constant *Ptr, *Key;
- Constant *Disc = nullptr, *AddrDisc = nullptr;
+ Constant *Disc = nullptr, *AddrDisc = nullptr,
+ *DeactivationSymbol = nullptr;
if (parseToken(lltok::lparen,
"expected '(' in constant ptrauth expression") ||
@@ -4239,11 +4240,14 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
"expected comma in constant ptrauth expression") ||
parseGlobalTypeAndValue(Key))
return true;
- // If present, parse the optional disc/addrdisc.
- if (EatIfPresent(lltok::comma))
- if (parseGlobalTypeAndValue(Disc) ||
- (EatIfPresent(lltok::comma) && parseGlobalTypeAndValue(AddrDisc)))
- return true;
+ // If present, parse the optional disc/addrdisc/ds.
+ if (EatIfPresent(lltok::comma) && parseGlobalTypeAndValue(Disc))
+ return true;
+ if (EatIfPresent(lltok::comma) && parseGlobalTypeAndValue(AddrDisc))
+ return true;
+ if (EatIfPresent(lltok::comma) &&
+ parseGlobalTypeAndValue(DeactivationSymbol))
+ return true;
if (parseToken(lltok::rparen,
"expected ')' in constant ptrauth expression"))
return true;
@@ -4274,7 +4278,16 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
AddrDisc = ConstantPointerNull::get(PointerType::get(Context, 0));
}
- ID.ConstantVal = ConstantPtrAuth::get(Ptr, KeyC, DiscC, AddrDisc);
+ if (DeactivationSymbol) {
+ if (!DeactivationSymbol->getType()->isPointerTy())
+ return error(
+ ID.Loc, "constant ptrauth deactivation symbol must be a pointer");
+ } else {
+ DeactivationSymbol = ConstantPointerNull::get(PointerType::get(Context, 0));
+ }
+
+ ID.ConstantVal =
+ ConstantPtrAuth::get(Ptr, KeyC, DiscC, AddrDisc, DeactivationSymbol);
ID.Kind = ValID::t_Constant;
return false;
}
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 40e755902b724..c09c3b4f7d38c 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1611,7 +1611,13 @@ Expected<Value *> BitcodeReader::materializeValue(unsigned StartValID,
if (!Disc)
return error("ptrauth disc operand must be ConstantInt");
- C = ConstantPtrAuth::get(ConstOps[0], Key, Disc, ConstOps[3]);
+ auto *DeactivationSymbol =
+ ConstOps.size() > 4 ? ConstOps[4]
+ : ConstantPointerNull::get(cast<PointerType>(
+ ConstOps[3]->getType()));
+
+ C = ConstantPtrAuth::get(ConstOps[0], Key, Disc, ConstOps[3],
+ DeactivationSymbol);
break;
}
case BitcodeConstant::NoCFIOpcode: {
@@ -3811,6 +3817,16 @@ Error BitcodeReader::parseConstants() {
(unsigned)Record[2], (unsigned)Record[3]});
break;
}
+ case bitc::CST_CODE_PTRAUTH2: {
+ if (Record.size() < 4)
+ return error("Invalid ptrauth record");
+ // Ptr, Key, Disc, AddrDisc, DeactivationSymbol
+ V = BitcodeConstant::create(
+ Alloc, CurTy, BitcodeConstant::ConstantPtrAuthOpcode,
+ {(unsigned)Record[0], (unsigned)Record[1], (unsigned)Record[2],
+ (unsigned)Record[3], (unsigned)Record[4]});
+ break;
+ }
}
assert(V->getType() == getTypeByID(CurTyID) && "Incorrect result type ID");
diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index 79547b299a903..5efb321967008 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -1630,12 +1630,14 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV,
if (const ConstantPtrAuth *CPA = dyn_cast<ConstantPtrAuth>(CV)) {
Out << "ptrauth (";
- // ptrauth (ptr CST, i32 KEY[, i64 DISC[, ptr ADDRDISC]?]?)
+ // ptrauth (ptr CST, i32 KEY[, i64 DISC[, ptr ADDRDISC[, ptr DS]?]?]?)
unsigned NumOpsToWrite = 2;
if (!CPA->getOperand(2)->isNullValue())
NumOpsToWrite = 3;
if (!CPA->getOperand(3)->isNullValue())
NumOpsToWrite = 4;
+ if (!CPA->getOperand(4)->isNullValue())
+ NumOpsToWrite = 5;
ListSeparator LS;
for (unsigned i = 0, e = NumOpsToWrite; i != e; ++i) {
diff --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp
index fb659450bfeeb..007d36d19f373 100644
--- a/llvm/lib/IR/Constants.cpp
+++ b/llvm/lib/IR/Constants.cpp
@@ -2072,19 +2072,22 @@ Value *NoCFIValue::handleOperandChangeImpl(Value *From, Value *To) {
//
ConstantPtrAuth *ConstantPtrAuth::get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc) {
- Constant *ArgVec[] = {Ptr, Key, Disc, AddrDisc};
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol) {
+ Constant *ArgVec[] = {Ptr, Key, Disc, AddrDisc, DeactivationSymbol};
ConstantPtrAuthKeyType MapKey(ArgVec);
LLVMContextImpl *pImpl = Ptr->getContext().pImpl;
return pImpl->ConstantPtrAuths.getOrCreate(Ptr->getType(), MapKey);
}
ConstantPtrAuth *ConstantPtrAuth::getWithSameSchema(Constant *Pointer) const {
- return get(Pointer, getKey(), getDiscriminator(), getAddrDiscriminator());
+ return get(Pointer, getKey(), getDiscriminator(), getAddrDiscriminator(),
+ getDeactivationSymbol());
}
ConstantPtrAuth::ConstantPtrAuth(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc)
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol)
: Constant(Ptr->getType(), Value::ConstantPtrAuthVal, AllocMarker) {
assert(Ptr->getType()->isPointerTy());
assert(Key->getBitWidth() == 32);
@@ -2094,6 +2097,7 @@ ConstantPtrAuth::ConstantPtrAuth(Constant *Ptr, ConstantInt *Key,
setOperand(1, Key);
setOperand(2, Disc);
setOperand(3, AddrDisc);
+ setOperand(4, DeactivationSymbol);
}
/// Remove the constant from the constant table.
diff --git a/llvm/lib/IR/ConstantsContext.h b/llvm/lib/IR/ConstantsContext.h
index e5c9622e09927..bf9d8ab952271 100644
--- a/llvm/lib/IR/ConstantsContext.h
+++ b/llvm/lib/IR/ConstantsContext.h
@@ -545,7 +545,8 @@ struct ConstantPtrAuthKeyType {
ConstantPtrAuth *create(TypeClass *Ty) const {
return new ConstantPtrAuth(Operands[0], cast<ConstantInt>(Operands[1]),
- cast<ConstantInt>(Operands[2]), Operands[3]);
+ cast<ConstantInt>(Operands[2]), Operands[3],
+ Operands[4]);
}
};
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index f4b03e8cb8aa3..6190ebdac16d4 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -1687,7 +1687,9 @@ LLVMValueRef LLVMConstantPtrAuth(LLVMValueRef Ptr, LLVMValueRef Key,
LLVMValueRef Disc, LLVMValueRef AddrDisc) {
return wrap(ConstantPtrAuth::get(
unwrap<Constant>(Ptr), unwrap<ConstantInt>(Key),
- unwrap<ConstantInt>(Disc), unwrap<Constant>(AddrDisc)));
+ unwrap<ConstantInt>(Disc), unwrap<Constant>(AddrDisc),
+ ConstantPointerNull::get(
+ cast<PointerType>(unwrap<Constant>(AddrDisc)->getType()))));
}
/*-- Opcode mapping */
diff --git a/llvm/lib/SandboxIR/Constant.cpp b/llvm/lib/SandboxIR/Constant.cpp
index 3e13c935c4281..0a28cf9feeb4d 100644
--- a/llvm/lib/SandboxIR/Constant.cpp
+++ b/llvm/lib/SandboxIR/Constant.cpp
@@ -421,10 +421,12 @@ PointerType *NoCFIValue::getType() const {
}
ConstantPtrAuth *ConstantPtrAuth::get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc) {
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol) {
auto *LLVMC = llvm::ConstantPtrAuth::get(
cast<llvm::Constant>(Ptr->Val), cast<llvm::ConstantInt>(Key->Val),
- cast<llvm::ConstantInt>(Disc->Val), cast<llvm::Constant>(AddrDisc->Val));
+ cast<llvm::ConstantInt>(Disc->Val), cast<llvm::Constant>(AddrDisc->Val),
+ cast<llvm::Constant>(DeactivationSymbol->Val));
return cast<ConstantPtrAuth>(Ptr->getContext().getOrCreateConstant(LLVMC));
}
@@ -448,6 +450,11 @@ Constant *ConstantPtrAuth::getAddrDiscriminator() const {
cast<llvm::ConstantPtrAuth>(Val)->getAddrDiscriminator());
}
+Constant *ConstantPtrAuth::getDeactivationSymbol() const {
+ return Ctx.getOrCreateConstant(
+ cast<llvm::ConstantPtrAuth>(Val)->getDeactivationSymbol());
+}
+
ConstantPtrAuth *ConstantPtrAuth::getWithSameSchema(Constant *Pointer) const {
auto *LLVMC = cast<llvm::ConstantPtrAuth>(Val)->getWithSameSchema(
cast<llvm::Constant>(Pointer->Val));
diff --git a/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp b/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
index 135f6cff0f78b..283493408699e 100644
--- a/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
+++ b/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
@@ -195,7 +195,7 @@ class AArch64AsmPrinter : public AsmPrinter {
const MCExpr *emitPAuthRelocationAsIRelative(
const MCExpr *Target, uint16_t Disc, AArch64PACKey::ID KeyID,
- bool HasAddressDiversity, bool IsDSOLocal);
+ bool HasAddressDiversity, bool IsDSOLocal, const MCExpr *DSExpr);
/// tblgen'erated driver function for lowering simple MI->MC
/// pseudo instructions.
@@ -2270,15 +2270,17 @@ static void emitAddress(MCStreamer &Streamer, MCRegister Reg,
}
static bool targetSupportsPAuthRelocation(const Triple &TT,
- const MCExpr *Target) {
+ const MCExpr *Target,
+ const MCExpr *DSExpr) {
// No released version of glibc supports PAuth relocations.
if (TT.isOSGlibc())
return false;
// We emit PAuth constants as IRELATIVE relocations in cases where the
// constant cannot be represented as a PAuth relocation:
- // 1) The signed value is not a symbol.
- return !isa<MCConstantExpr>(Target);
+ // 1) There is a deactivation symbol.
+ // 2) The signed value is not a symbol.
+ return !DSExpr && !isa<MCConstantExpr>(Target);
}
static bool targetSupportsIRelativeRelocation(const Triple &TT) {
@@ -2295,7 +2297,7 @@ static bool targetSupportsIRelativeRelocation(const Triple &TT) {
const MCExpr *AArch64AsmPrinter::emitPAuthRelocationAsIRelative(
const MCExpr *Target, uint16_t Disc, AArch64PACKey::ID KeyID,
- bool HasAddressDiversity, bool IsDSOLocal) {
+ bool HasAddressDiversity, bool IsDSOLocal, const MCExpr *DSExpr) {
const Triple &TT = TM.getTargetTriple();
// We only emit an IRELATIVE relocation if the target supports IRELATIVE and
@@ -2358,6 +2360,18 @@ const MCExpr *AArch64AsmPrinter::emitPAuthRelocationAsIRelative(
MCSymbolRefExpr::create(EmuPAC, OutStreamer->getContext());
OutStreamer->emitInstruction(MCInstBuilder(AArch64::B).addExpr(EmuPACRef),
*STI);
+
+ if (DSExpr) {
+ auto *PrePACInstExpr =
+ MCSymbolRefExpr::create(PrePACInst, OutStreamer->getContext());
+ OutStreamer->emitRelocDirective(*PrePACInstExpr, "R_AARCH64_INST32", DSExpr,
+ SMLoc(), *STI);
+ }
+
+ // We need a RET despite the above tail call because the deactivation symbol
+ // may replace it with a NOP.
+ OutStreamer->emitInstruction(MCInstBuilder(AArch64::RET).addReg(AArch64::LR),
+ *STI);
OutStreamer->popSection();
return MCSymbolRefExpr::create(IFuncSym, OutStreamer->getContext());
@@ -2388,6 +2402,13 @@ AArch64AsmPrinter::lowerConstantPtrAuth(const ConstantPtrAuth &CPA) {
Sym = MCConstantExpr::create(Offset.getSExtValue(), Ctx);
}
+ const MCExpr *DSExpr = nullptr;
+ if (auto *DS = dyn_cast<GlobalValue>(CPA.getDeactivationSymbol())) {
+ if (isa<GlobalAlias>(DS))
+ return Sym;
+ DSExpr = MCSymbolRefExpr::create(getSymbol(DS), Ctx);
+ }
+
uint64_t KeyID = CPA.getKey()->getZExtValue();
// We later rely on valid KeyID value in AArch64PACKeyIDToString call from
// AArch64AuthMCExpr::printImpl, so fail fast.
@@ -2404,9 +2425,13 @@ AArch64AsmPrinter::lowerConstantPtrAuth(const ConstantPtrAuth &CPA) {
// Check if we need to represent this with an IRELATIVE and emit it if so.
if (auto *IFuncSym = emitPAuthRelocationAsIRelative(
Sym, Disc, AArch64PACKey::ID(KeyID), CPA.hasAddressDiscriminator(),
- BaseGVB && BaseGVB->isDSOLocal()))
+ BaseGVB && BaseGVB->isDSOLocal(), DSExpr))
return IFuncSym;
+ if (DSExpr)
+ report_fatal_error("deactivation symbols unsupported in constant "
+ "expressions on this target");
+
// Finally build the complete @AUTH expr.
return AArch64AuthMCExpr::create(Sym, Disc, AArch64PACKey::ID(KeyID),
CPA.hasAddressDiscriminator(), Ctx);
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 12dd4cec85f59..58b98d8d93464 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -2946,9 +2946,9 @@ Instruction *InstCombinerImpl::visitCallInst(CallInst &CI) {
if (NeedSign && isa<ConstantInt>(II->getArgOperand(4))) {
auto *SignKey = cast<ConstantInt>(II->getArgOperand(3));
auto *SignDisc = cast<ConstantInt>(II->getArgOperand(4));
- auto *SignAddrDisc = ConstantPointerNull::get(Builder.getPtrTy());
+ auto *Null = ConstantPointerNull::get(Builder.getPtrTy());
auto *NewCPA = ConstantPtrAuth::get(CPA->getPointer(), SignKey,
- SignDisc, SignAddrDisc);
+ SignDisc, Null, Null);
replaceInstUsesWith(
*II, ConstantExpr::getPointerCast(NewCPA, II->getType()));
return eraseInstFromFunction(*II);
diff --git a/llvm/lib/Transforms/Utils/ValueMapper.cpp b/llvm/lib/Transforms/Utils/ValueMapper.cpp
index 5e50536a99206..320bef6c8f240 100644
--- a/llvm/lib/Transforms/Utils/ValueMapper.cpp
+++ b/llvm/lib/Transforms/Utils/ValueMapper.cpp
@@ -526,8 +526,9 @@ Value *Mapper::mapValue(const Value *V) {
if (isa<ConstantVector>(C))
return getVM()[V] = ConstantVector::get(Ops);
if (isa<ConstantPtrAuth>(C))
- return getVM()[V] = ConstantPtrAuth::get(Ops[0], cast<ConstantInt>(Ops[1]),
- cast<ConstantInt>(Ops[2]), Ops[3]);
+ return getVM()[V] =
+ ConstantPtrAuth::get(Ops[0], cast<ConstantInt>(Ops[1]),
+ cast<ConstantInt>(Ops[2]), Ops[3], Ops[4]);
// If this is a no-operand constant, it must be because the type was remapped.
if (isa<PoisonValue>(C))
return getVM()[V] = PoisonValue::get(NewTy);
diff --git a/llvm/unittests/SandboxIR/SandboxIR...
[truncated]
|
|
@llvm/pr-subscribers-llvm-ir Author: Peter Collingbourne (pcc) ChangesDeactivation symbol operands are supported in the code generator by TODO:
Patch is 22.34 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/133537.diff 16 Files Affected:
diff --git a/clang/lib/CodeGen/CGPointerAuth.cpp b/clang/lib/CodeGen/CGPointerAuth.cpp
index 4b032306ead72..2d72fef470af6 100644
--- a/clang/lib/CodeGen/CGPointerAuth.cpp
+++ b/clang/lib/CodeGen/CGPointerAuth.cpp
@@ -308,9 +308,9 @@ CodeGenModule::getConstantSignedPointer(llvm::Constant *Pointer, unsigned Key,
IntegerDiscriminator = llvm::ConstantInt::get(Int64Ty, 0);
}
- return llvm::ConstantPtrAuth::get(Pointer,
- llvm::ConstantInt::get(Int32Ty, Key),
- IntegerDiscriminator, AddressDiscriminator);
+ return llvm::ConstantPtrAuth::get(
+ Pointer, llvm::ConstantInt::get(Int32Ty, Key), IntegerDiscriminator,
+ AddressDiscriminator, llvm::Constant::getNullValue(UnqualPtrTy));
}
/// Does a given PointerAuthScheme require us to sign a value
diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
index ec2535ac85966..13521ba6cd00f 100644
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -431,6 +431,7 @@ enum ConstantsCodes {
CST_CODE_CE_GEP_WITH_INRANGE = 31, // [opty, flags, range, n x operands]
CST_CODE_CE_GEP = 32, // [opty, flags, n x operands]
CST_CODE_PTRAUTH = 33, // [ptr, key, disc, addrdisc]
+ CST_CODE_PTRAUTH2 = 34, // [ptr, key, disc, addrdisc, DeactivationSymbol]
};
/// CastOpcodes - These are values used in the bitcode files to encode which
diff --git a/llvm/include/llvm/IR/Constants.h b/llvm/include/llvm/IR/Constants.h
index a50217078d0ed..45d5352bf06a6 100644
--- a/llvm/include/llvm/IR/Constants.h
+++ b/llvm/include/llvm/IR/Constants.h
@@ -1022,10 +1022,10 @@ class ConstantPtrAuth final : public Constant {
friend struct ConstantPtrAuthKeyType;
friend class Constant;
- constexpr static IntrusiveOperandsAllocMarker AllocMarker{4};
+ constexpr static IntrusiveOperandsAllocMarker AllocMarker{5};
ConstantPtrAuth(Constant *Ptr, ConstantInt *Key, ConstantInt *Disc,
- Constant *AddrDisc);
+ Constant *AddrDisc, Constant *DeactivationSymbol);
void *operator new(size_t s) { return User::operator new(s, AllocMarker); }
@@ -1035,7 +1035,8 @@ class ConstantPtrAuth final : public Constant {
public:
/// Return a pointer signed with the specified parameters.
static ConstantPtrAuth *get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc);
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol);
/// Produce a new ptrauth expression signing the given value using
/// the same schema as is stored in one.
@@ -1067,6 +1068,10 @@ class ConstantPtrAuth final : public Constant {
return !getAddrDiscriminator()->isNullValue();
}
+ Constant *getDeactivationSymbol() const {
+ return cast<Constant>(Op<4>().get());
+ }
+
/// A constant value for the address discriminator which has special
/// significance to ctors/dtors lowering. Regular address discrimination can't
/// be applied for them since uses of llvm.global_{c|d}tors are disallowed
@@ -1094,7 +1099,7 @@ class ConstantPtrAuth final : public Constant {
template <>
struct OperandTraits<ConstantPtrAuth>
- : public FixedNumOperandTraits<ConstantPtrAuth, 4> {};
+ : public FixedNumOperandTraits<ConstantPtrAuth, 5> {};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ConstantPtrAuth, Constant)
diff --git a/llvm/include/llvm/SandboxIR/Constant.h b/llvm/include/llvm/SandboxIR/Constant.h
index 17f55e973cd76..5243a9476ac64 100644
--- a/llvm/include/llvm/SandboxIR/Constant.h
+++ b/llvm/include/llvm/SandboxIR/Constant.h
@@ -1096,7 +1096,8 @@ class ConstantPtrAuth final : public Constant {
public:
/// Return a pointer signed with the specified parameters.
static ConstantPtrAuth *get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc);
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol);
/// The pointer that is signed in this ptrauth signed pointer.
Constant *getPointer() const;
@@ -1111,6 +1112,8 @@ class ConstantPtrAuth final : public Constant {
/// the only global-initializer user of the ptrauth signed pointer.
Constant *getAddrDiscriminator() const;
+ Constant *getDeactivationSymbol() const;
+
/// Whether there is any non-null address discriminator.
bool hasAddressDiscriminator() const {
return cast<llvm::ConstantPtrAuth>(Val)->hasAddressDiscriminator();
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 960119bab0933..dfa014aa0bd7d 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -4226,11 +4226,12 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
}
case lltok::kw_ptrauth: {
// ValID ::= 'ptrauth' '(' ptr @foo ',' i32 <key>
- // (',' i64 <disc> (',' ptr addrdisc)? )? ')'
+ // (',' i64 <disc> (',' ptr addrdisc (',' ptr ds)? )? )? ')'
Lex.Lex();
Constant *Ptr, *Key;
- Constant *Disc = nullptr, *AddrDisc = nullptr;
+ Constant *Disc = nullptr, *AddrDisc = nullptr,
+ *DeactivationSymbol = nullptr;
if (parseToken(lltok::lparen,
"expected '(' in constant ptrauth expression") ||
@@ -4239,11 +4240,14 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
"expected comma in constant ptrauth expression") ||
parseGlobalTypeAndValue(Key))
return true;
- // If present, parse the optional disc/addrdisc.
- if (EatIfPresent(lltok::comma))
- if (parseGlobalTypeAndValue(Disc) ||
- (EatIfPresent(lltok::comma) && parseGlobalTypeAndValue(AddrDisc)))
- return true;
+ // If present, parse the optional disc/addrdisc/ds.
+ if (EatIfPresent(lltok::comma) && parseGlobalTypeAndValue(Disc))
+ return true;
+ if (EatIfPresent(lltok::comma) && parseGlobalTypeAndValue(AddrDisc))
+ return true;
+ if (EatIfPresent(lltok::comma) &&
+ parseGlobalTypeAndValue(DeactivationSymbol))
+ return true;
if (parseToken(lltok::rparen,
"expected ')' in constant ptrauth expression"))
return true;
@@ -4274,7 +4278,16 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
AddrDisc = ConstantPointerNull::get(PointerType::get(Context, 0));
}
- ID.ConstantVal = ConstantPtrAuth::get(Ptr, KeyC, DiscC, AddrDisc);
+ if (DeactivationSymbol) {
+ if (!DeactivationSymbol->getType()->isPointerTy())
+ return error(
+ ID.Loc, "constant ptrauth deactivation symbol must be a pointer");
+ } else {
+ DeactivationSymbol = ConstantPointerNull::get(PointerType::get(Context, 0));
+ }
+
+ ID.ConstantVal =
+ ConstantPtrAuth::get(Ptr, KeyC, DiscC, AddrDisc, DeactivationSymbol);
ID.Kind = ValID::t_Constant;
return false;
}
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 40e755902b724..c09c3b4f7d38c 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1611,7 +1611,13 @@ Expected<Value *> BitcodeReader::materializeValue(unsigned StartValID,
if (!Disc)
return error("ptrauth disc operand must be ConstantInt");
- C = ConstantPtrAuth::get(ConstOps[0], Key, Disc, ConstOps[3]);
+ auto *DeactivationSymbol =
+ ConstOps.size() > 4 ? ConstOps[4]
+ : ConstantPointerNull::get(cast<PointerType>(
+ ConstOps[3]->getType()));
+
+ C = ConstantPtrAuth::get(ConstOps[0], Key, Disc, ConstOps[3],
+ DeactivationSymbol);
break;
}
case BitcodeConstant::NoCFIOpcode: {
@@ -3811,6 +3817,16 @@ Error BitcodeReader::parseConstants() {
(unsigned)Record[2], (unsigned)Record[3]});
break;
}
+ case bitc::CST_CODE_PTRAUTH2: {
+ if (Record.size() < 4)
+ return error("Invalid ptrauth record");
+ // Ptr, Key, Disc, AddrDisc, DeactivationSymbol
+ V = BitcodeConstant::create(
+ Alloc, CurTy, BitcodeConstant::ConstantPtrAuthOpcode,
+ {(unsigned)Record[0], (unsigned)Record[1], (unsigned)Record[2],
+ (unsigned)Record[3], (unsigned)Record[4]});
+ break;
+ }
}
assert(V->getType() == getTypeByID(CurTyID) && "Incorrect result type ID");
diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index 79547b299a903..5efb321967008 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -1630,12 +1630,14 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV,
if (const ConstantPtrAuth *CPA = dyn_cast<ConstantPtrAuth>(CV)) {
Out << "ptrauth (";
- // ptrauth (ptr CST, i32 KEY[, i64 DISC[, ptr ADDRDISC]?]?)
+ // ptrauth (ptr CST, i32 KEY[, i64 DISC[, ptr ADDRDISC[, ptr DS]?]?]?)
unsigned NumOpsToWrite = 2;
if (!CPA->getOperand(2)->isNullValue())
NumOpsToWrite = 3;
if (!CPA->getOperand(3)->isNullValue())
NumOpsToWrite = 4;
+ if (!CPA->getOperand(4)->isNullValue())
+ NumOpsToWrite = 5;
ListSeparator LS;
for (unsigned i = 0, e = NumOpsToWrite; i != e; ++i) {
diff --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp
index fb659450bfeeb..007d36d19f373 100644
--- a/llvm/lib/IR/Constants.cpp
+++ b/llvm/lib/IR/Constants.cpp
@@ -2072,19 +2072,22 @@ Value *NoCFIValue::handleOperandChangeImpl(Value *From, Value *To) {
//
ConstantPtrAuth *ConstantPtrAuth::get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc) {
- Constant *ArgVec[] = {Ptr, Key, Disc, AddrDisc};
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol) {
+ Constant *ArgVec[] = {Ptr, Key, Disc, AddrDisc, DeactivationSymbol};
ConstantPtrAuthKeyType MapKey(ArgVec);
LLVMContextImpl *pImpl = Ptr->getContext().pImpl;
return pImpl->ConstantPtrAuths.getOrCreate(Ptr->getType(), MapKey);
}
ConstantPtrAuth *ConstantPtrAuth::getWithSameSchema(Constant *Pointer) const {
- return get(Pointer, getKey(), getDiscriminator(), getAddrDiscriminator());
+ return get(Pointer, getKey(), getDiscriminator(), getAddrDiscriminator(),
+ getDeactivationSymbol());
}
ConstantPtrAuth::ConstantPtrAuth(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc)
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol)
: Constant(Ptr->getType(), Value::ConstantPtrAuthVal, AllocMarker) {
assert(Ptr->getType()->isPointerTy());
assert(Key->getBitWidth() == 32);
@@ -2094,6 +2097,7 @@ ConstantPtrAuth::ConstantPtrAuth(Constant *Ptr, ConstantInt *Key,
setOperand(1, Key);
setOperand(2, Disc);
setOperand(3, AddrDisc);
+ setOperand(4, DeactivationSymbol);
}
/// Remove the constant from the constant table.
diff --git a/llvm/lib/IR/ConstantsContext.h b/llvm/lib/IR/ConstantsContext.h
index e5c9622e09927..bf9d8ab952271 100644
--- a/llvm/lib/IR/ConstantsContext.h
+++ b/llvm/lib/IR/ConstantsContext.h
@@ -545,7 +545,8 @@ struct ConstantPtrAuthKeyType {
ConstantPtrAuth *create(TypeClass *Ty) const {
return new ConstantPtrAuth(Operands[0], cast<ConstantInt>(Operands[1]),
- cast<ConstantInt>(Operands[2]), Operands[3]);
+ cast<ConstantInt>(Operands[2]), Operands[3],
+ Operands[4]);
}
};
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index f4b03e8cb8aa3..6190ebdac16d4 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -1687,7 +1687,9 @@ LLVMValueRef LLVMConstantPtrAuth(LLVMValueRef Ptr, LLVMValueRef Key,
LLVMValueRef Disc, LLVMValueRef AddrDisc) {
return wrap(ConstantPtrAuth::get(
unwrap<Constant>(Ptr), unwrap<ConstantInt>(Key),
- unwrap<ConstantInt>(Disc), unwrap<Constant>(AddrDisc)));
+ unwrap<ConstantInt>(Disc), unwrap<Constant>(AddrDisc),
+ ConstantPointerNull::get(
+ cast<PointerType>(unwrap<Constant>(AddrDisc)->getType()))));
}
/*-- Opcode mapping */
diff --git a/llvm/lib/SandboxIR/Constant.cpp b/llvm/lib/SandboxIR/Constant.cpp
index 3e13c935c4281..0a28cf9feeb4d 100644
--- a/llvm/lib/SandboxIR/Constant.cpp
+++ b/llvm/lib/SandboxIR/Constant.cpp
@@ -421,10 +421,12 @@ PointerType *NoCFIValue::getType() const {
}
ConstantPtrAuth *ConstantPtrAuth::get(Constant *Ptr, ConstantInt *Key,
- ConstantInt *Disc, Constant *AddrDisc) {
+ ConstantInt *Disc, Constant *AddrDisc,
+ Constant *DeactivationSymbol) {
auto *LLVMC = llvm::ConstantPtrAuth::get(
cast<llvm::Constant>(Ptr->Val), cast<llvm::ConstantInt>(Key->Val),
- cast<llvm::ConstantInt>(Disc->Val), cast<llvm::Constant>(AddrDisc->Val));
+ cast<llvm::ConstantInt>(Disc->Val), cast<llvm::Constant>(AddrDisc->Val),
+ cast<llvm::Constant>(DeactivationSymbol->Val));
return cast<ConstantPtrAuth>(Ptr->getContext().getOrCreateConstant(LLVMC));
}
@@ -448,6 +450,11 @@ Constant *ConstantPtrAuth::getAddrDiscriminator() const {
cast<llvm::ConstantPtrAuth>(Val)->getAddrDiscriminator());
}
+Constant *ConstantPtrAuth::getDeactivationSymbol() const {
+ return Ctx.getOrCreateConstant(
+ cast<llvm::ConstantPtrAuth>(Val)->getDeactivationSymbol());
+}
+
ConstantPtrAuth *ConstantPtrAuth::getWithSameSchema(Constant *Pointer) const {
auto *LLVMC = cast<llvm::ConstantPtrAuth>(Val)->getWithSameSchema(
cast<llvm::Constant>(Pointer->Val));
diff --git a/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp b/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
index 135f6cff0f78b..283493408699e 100644
--- a/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
+++ b/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
@@ -195,7 +195,7 @@ class AArch64AsmPrinter : public AsmPrinter {
const MCExpr *emitPAuthRelocationAsIRelative(
const MCExpr *Target, uint16_t Disc, AArch64PACKey::ID KeyID,
- bool HasAddressDiversity, bool IsDSOLocal);
+ bool HasAddressDiversity, bool IsDSOLocal, const MCExpr *DSExpr);
/// tblgen'erated driver function for lowering simple MI->MC
/// pseudo instructions.
@@ -2270,15 +2270,17 @@ static void emitAddress(MCStreamer &Streamer, MCRegister Reg,
}
static bool targetSupportsPAuthRelocation(const Triple &TT,
- const MCExpr *Target) {
+ const MCExpr *Target,
+ const MCExpr *DSExpr) {
// No released version of glibc supports PAuth relocations.
if (TT.isOSGlibc())
return false;
// We emit PAuth constants as IRELATIVE relocations in cases where the
// constant cannot be represented as a PAuth relocation:
- // 1) The signed value is not a symbol.
- return !isa<MCConstantExpr>(Target);
+ // 1) There is a deactivation symbol.
+ // 2) The signed value is not a symbol.
+ return !DSExpr && !isa<MCConstantExpr>(Target);
}
static bool targetSupportsIRelativeRelocation(const Triple &TT) {
@@ -2295,7 +2297,7 @@ static bool targetSupportsIRelativeRelocation(const Triple &TT) {
const MCExpr *AArch64AsmPrinter::emitPAuthRelocationAsIRelative(
const MCExpr *Target, uint16_t Disc, AArch64PACKey::ID KeyID,
- bool HasAddressDiversity, bool IsDSOLocal) {
+ bool HasAddressDiversity, bool IsDSOLocal, const MCExpr *DSExpr) {
const Triple &TT = TM.getTargetTriple();
// We only emit an IRELATIVE relocation if the target supports IRELATIVE and
@@ -2358,6 +2360,18 @@ const MCExpr *AArch64AsmPrinter::emitPAuthRelocationAsIRelative(
MCSymbolRefExpr::create(EmuPAC, OutStreamer->getContext());
OutStreamer->emitInstruction(MCInstBuilder(AArch64::B).addExpr(EmuPACRef),
*STI);
+
+ if (DSExpr) {
+ auto *PrePACInstExpr =
+ MCSymbolRefExpr::create(PrePACInst, OutStreamer->getContext());
+ OutStreamer->emitRelocDirective(*PrePACInstExpr, "R_AARCH64_INST32", DSExpr,
+ SMLoc(), *STI);
+ }
+
+ // We need a RET despite the above tail call because the deactivation symbol
+ // may replace it with a NOP.
+ OutStreamer->emitInstruction(MCInstBuilder(AArch64::RET).addReg(AArch64::LR),
+ *STI);
OutStreamer->popSection();
return MCSymbolRefExpr::create(IFuncSym, OutStreamer->getContext());
@@ -2388,6 +2402,13 @@ AArch64AsmPrinter::lowerConstantPtrAuth(const ConstantPtrAuth &CPA) {
Sym = MCConstantExpr::create(Offset.getSExtValue(), Ctx);
}
+ const MCExpr *DSExpr = nullptr;
+ if (auto *DS = dyn_cast<GlobalValue>(CPA.getDeactivationSymbol())) {
+ if (isa<GlobalAlias>(DS))
+ return Sym;
+ DSExpr = MCSymbolRefExpr::create(getSymbol(DS), Ctx);
+ }
+
uint64_t KeyID = CPA.getKey()->getZExtValue();
// We later rely on valid KeyID value in AArch64PACKeyIDToString call from
// AArch64AuthMCExpr::printImpl, so fail fast.
@@ -2404,9 +2425,13 @@ AArch64AsmPrinter::lowerConstantPtrAuth(const ConstantPtrAuth &CPA) {
// Check if we need to represent this with an IRELATIVE and emit it if so.
if (auto *IFuncSym = emitPAuthRelocationAsIRelative(
Sym, Disc, AArch64PACKey::ID(KeyID), CPA.hasAddressDiscriminator(),
- BaseGVB && BaseGVB->isDSOLocal()))
+ BaseGVB && BaseGVB->isDSOLocal(), DSExpr))
return IFuncSym;
+ if (DSExpr)
+ report_fatal_error("deactivation symbols unsupported in constant "
+ "expressions on this target");
+
// Finally build the complete @AUTH expr.
return AArch64AuthMCExpr::create(Sym, Disc, AArch64PACKey::ID(KeyID),
CPA.hasAddressDiscriminator(), Ctx);
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 12dd4cec85f59..58b98d8d93464 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -2946,9 +2946,9 @@ Instruction *InstCombinerImpl::visitCallInst(CallInst &CI) {
if (NeedSign && isa<ConstantInt>(II->getArgOperand(4))) {
auto *SignKey = cast<ConstantInt>(II->getArgOperand(3));
auto *SignDisc = cast<ConstantInt>(II->getArgOperand(4));
- auto *SignAddrDisc = ConstantPointerNull::get(Builder.getPtrTy());
+ auto *Null = ConstantPointerNull::get(Builder.getPtrTy());
auto *NewCPA = ConstantPtrAuth::get(CPA->getPointer(), SignKey,
- SignDisc, SignAddrDisc);
+ SignDisc, Null, Null);
replaceInstUsesWith(
*II, ConstantExpr::getPointerCast(NewCPA, II->getType()));
return eraseInstFromFunction(*II);
diff --git a/llvm/lib/Transforms/Utils/ValueMapper.cpp b/llvm/lib/Transforms/Utils/ValueMapper.cpp
index 5e50536a99206..320bef6c8f240 100644
--- a/llvm/lib/Transforms/Utils/ValueMapper.cpp
+++ b/llvm/lib/Transforms/Utils/ValueMapper.cpp
@@ -526,8 +526,9 @@ Value *Mapper::mapValue(const Value *V) {
if (isa<ConstantVector>(C))
return getVM()[V] = ConstantVector::get(Ops);
if (isa<ConstantPtrAuth>(C))
- return getVM()[V] = ConstantPtrAuth::get(Ops[0], cast<ConstantInt>(Ops[1]),
- cast<ConstantInt>(Ops[2]), Ops[3]);
+ return getVM()[V] =
+ ConstantPtrAuth::get(Ops[0], cast<ConstantInt>(Ops[1]),
+ cast<ConstantInt>(Ops[2]), Ops[3], Ops[4]);
// If this is a no-operand constant, it must be because the type was remapped.
if (isa<PoisonValue>(C))
return getVM()[V] = PoisonValue::get(NewTy);
diff --git a/llvm/unittests/SandboxIR/SandboxIR...
[truncated]
|
You can test this locally with the following command:git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- clang/lib/CodeGen/CGPointerAuth.cpp llvm/include/llvm/Bitcode/LLVMBitCodes.h llvm/include/llvm/IR/Constants.h llvm/include/llvm/SandboxIR/Constant.h llvm/lib/AsmParser/LLParser.cpp llvm/lib/Bitcode/Reader/BitcodeReader.cpp llvm/lib/IR/AsmWriter.cpp llvm/lib/IR/Constants.cpp llvm/lib/IR/ConstantsContext.h llvm/lib/IR/Core.cpp llvm/lib/SandboxIR/Constant.cpp llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp llvm/lib/Transforms/Utils/ValueMapper.cpp llvm/unittests/SandboxIR/SandboxIRTest.cpp llvm/unittests/Transforms/Utils/ValueMapperTest.cppView the diff from clang-format here.diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
index c414ed4e3..f6e1976b5 100644
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -437,7 +437,7 @@ enum ConstantsCodes {
CST_CODE_CE_GEP_WITH_INRANGE = 31, // [opty, flags, range, n x operands]
CST_CODE_CE_GEP = 32, // [opty, flags, n x operands]
CST_CODE_PTRAUTH = 33, // [ptr, key, disc, addrdisc]
- CST_CODE_PTRAUTH2 = 34, // [ptr, key, disc, addrdisc, DeactivationSymbol]
+ CST_CODE_PTRAUTH2 = 34, // [ptr, key, disc, addrdisc, DeactivationSymbol]
};
/// CastOpcodes - These are values used in the bitcode files to encode which
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 55b89ae9f..0891efef8 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -4218,7 +4218,8 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
}
case lltok::kw_ptrauth: {
// ValID ::= 'ptrauth' '(' ptr @foo ',' i32 <key>
- // (',' i64 <disc> (',' ptr addrdisc (',' ptr ds)? )? )? ')'
+ // (',' i64 <disc> (',' ptr addrdisc (',' ptr ds)?
+ // )? )? ')'
Lex.Lex();
Constant *Ptr, *Key;
@@ -4272,10 +4273,11 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
if (DeactivationSymbol) {
if (!DeactivationSymbol->getType()->isPointerTy())
- return error(
- ID.Loc, "constant ptrauth deactivation symbol must be a pointer");
+ return error(ID.Loc,
+ "constant ptrauth deactivation symbol must be a pointer");
} else {
- DeactivationSymbol = ConstantPointerNull::get(PointerType::get(Context, 0));
+ DeactivationSymbol =
+ ConstantPointerNull::get(PointerType::get(Context, 0));
}
ID.ConstantVal =
|
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Apr 3, 2025
Deactivation symbol operands are supported in the code generator by building on the previously added support for IRELATIVE relocations. TODO: - Fix broken test. - Add bitcode and IR writer support. - Add tests. Pull Request: llvm#133537
pcc
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to pcc/llvm-project
that referenced
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Apr 4, 2025
Deactivation symbol operands are supported in the code generator by building on the previously added support for IRELATIVE relocations. TODO: - Fix broken test. - Add bitcode and IR writer support. - Add tests. Pull Request: llvm#133537
pcc
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Deactivation symbol operands are supported in the code generator by building on the previously added support for IRELATIVE relocations. TODO: - Fix broken test. - Add bitcode and IR writer support. - Add tests. Pull Request: llvm#133537
| unwrap<ConstantInt>(Disc), unwrap<Constant>(AddrDisc))); | ||
| unwrap<ConstantInt>(Disc), unwrap<Constant>(AddrDisc), | ||
| ConstantPointerNull::get( | ||
| cast<PointerType>(unwrap<Constant>(AddrDisc)->getType())))); |
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Do we want to extend the C API to give access to this?
There was a problem hiding this comment.
I reckon that could be done in a followup if anyone needs it.
Right, I guess the new operand can either be null (no deactivation symbol) or a globalvariable. |
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Deactivation symbol operands are supported in the code generator by
building on the previously added support for IRELATIVE relocations.
TODO: