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PR400 work phase 1. Add attributed load/store instructions for volatile/align to LLVM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36349 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
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@ -211,9 +211,11 @@ public:
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/// SubclassData field in Value to store whether or not the load is volatile.
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///
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class LoadInst : public UnaryInstruction {
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LoadInst(const LoadInst &LI)
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: UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
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setVolatile(LI.isVolatile());
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setAlignment(LI.getAlignment());
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#ifndef NDEBUG
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AssertOK();
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@ -223,14 +225,16 @@ class LoadInst : public UnaryInstruction {
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public:
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LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
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LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
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LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
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LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
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Instruction *InsertBefore = 0);
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LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, unsigned Align,
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Instruction *InsertBefore = 0);
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LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
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BasicBlock *InsertAtEnd);
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LoadInst(Value *Ptr, const char *Name, Instruction *InsertBefore);
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LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAtEnd);
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explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
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explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
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Instruction *InsertBefore = 0);
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LoadInst(Value *Ptr, const char *Name, bool isVolatile,
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BasicBlock *InsertAtEnd);
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@ -238,14 +242,25 @@ public:
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/// isVolatile - Return true if this is a load from a volatile memory
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/// location.
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///
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bool isVolatile() const { return SubclassData; }
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bool isVolatile() const { return SubclassData & 1; }
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/// setVolatile - Specify whether this is a volatile load or not.
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///
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void setVolatile(bool V) { SubclassData = V; }
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void setVolatile(bool V) {
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SubclassData = (SubclassData & ~1) | ((V) ? 1 : 0);
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}
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virtual LoadInst *clone() const;
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/// getAlignment - Return the alignment of the access that is being performed
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///
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unsigned getAlignment() const {
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signed Log2AlignVal = ((SubclassData>>1)-1);
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return ((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal);
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}
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void setAlignment(unsigned Align);
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Value *getPointerOperand() { return getOperand(0); }
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const Value *getPointerOperand() const { return getOperand(0); }
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static unsigned getPointerOperandIndex() { return 0U; }
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@ -269,10 +284,13 @@ public:
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///
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class StoreInst : public Instruction {
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Use Ops[2];
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StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
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Ops[0].init(SI.Ops[0], this);
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Ops[1].init(SI.Ops[1], this);
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setVolatile(SI.isVolatile());
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setAlignment(SI.getAlignment());
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#ifndef NDEBUG
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AssertOK();
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#endif
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@ -283,17 +301,21 @@ public:
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StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
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Instruction *InsertBefore = 0);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile,
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unsigned Align, Instruction *InsertBefore = 0);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
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/// isVolatile - Return true if this is a load from a volatile memory
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/// location.
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///
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bool isVolatile() const { return SubclassData; }
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bool isVolatile() const { return SubclassData & 1; }
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/// setVolatile - Specify whether this is a volatile load or not.
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///
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void setVolatile(bool V) { SubclassData = V; }
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void setVolatile(bool V) {
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SubclassData = (SubclassData & ~1) | ((V) ? 1 : 0);
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}
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/// Transparently provide more efficient getOperand methods.
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Value *getOperand(unsigned i) const {
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@ -306,7 +328,15 @@ public:
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}
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unsigned getNumOperands() const { return 2; }
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/// getAlignment - Return the alignment of the access that is being performed
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///
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unsigned getAlignment() const {
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signed Log2AlignVal = ((SubclassData>>1)-1);
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return ((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal);
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}
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void setAlignment(unsigned Align);
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virtual StoreInst *clone() const;
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Value *getPointerOperand() { return getOperand(1); }
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@ -2940,7 +2940,7 @@ MemoryInst : MALLOC Types OptCAlign {
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CHECK_FOR_ERROR
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}
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| OptVolatile LOAD Types ValueRef {
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| OptVolatile LOAD Types ValueRef OptCAlign {
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if (!UpRefs.empty())
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GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
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if (!isa<PointerType>($3->get()))
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@ -2951,10 +2951,10 @@ MemoryInst : MALLOC Types OptCAlign {
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(*$3)->getDescription());
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Value* tmpVal = getVal(*$3, $4);
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CHECK_FOR_ERROR
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$$ = new LoadInst(tmpVal, "", $1);
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$$ = new LoadInst(tmpVal, "", $1, $5);
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delete $3;
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}
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| OptVolatile STORE ResolvedVal ',' Types ValueRef {
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| OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
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if (!UpRefs.empty())
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GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
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const PointerType *PT = dyn_cast<PointerType>($5->get());
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@ -2968,7 +2968,7 @@ MemoryInst : MALLOC Types OptCAlign {
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Value* tmpVal = getVal(*$5, $6);
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CHECK_FOR_ERROR
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$$ = new StoreInst($3, tmpVal, $1);
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$$ = new StoreInst($3, tmpVal, $1, $7);
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delete $5;
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}
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| GETELEMENTPTR Types ValueRef IndexList {
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@ -831,13 +831,31 @@ void BytecodeReader::ParseInstruction(SmallVector<unsigned, 8> &Oprnds,
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&Idx[0], Idx.size());
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break;
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}
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case 62: // volatile load
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case 62: { // attributed load
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if (Oprnds.size() != 2 || !isa<PointerType>(InstTy))
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error("Invalid attributed load instruction!");
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signed Log2AlignVal = ((Oprnds[1]>>1)-1);
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Result = new LoadInst(getValue(iType, Oprnds[0]), "", (Oprnds[1] & 1),
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((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal));
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break;
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}
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case Instruction::Load:
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if (Oprnds.size() != 1 || !isa<PointerType>(InstTy))
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error("Invalid load instruction!");
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Result = new LoadInst(getValue(iType, Oprnds[0]), "", Opcode == 62);
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Result = new LoadInst(getValue(iType, Oprnds[0]), "");
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break;
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case 63: // volatile store
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case 63: { // attributed store
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if (!isa<PointerType>(InstTy) || Oprnds.size() != 3)
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error("Invalid attributed store instruction!");
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Value *Ptr = getValue(iType, Oprnds[1]);
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const Type *ValTy = cast<PointerType>(Ptr->getType())->getElementType();
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signed Log2AlignVal = ((Oprnds[2]>>1)-1);
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Result = new StoreInst(getValue(getTypeSlot(ValTy), Oprnds[0]), Ptr,
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(Oprnds[2] & 1),
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((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal));
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break;
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}
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case Instruction::Store: {
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if (!isa<PointerType>(InstTy) || Oprnds.size() != 2)
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error("Invalid store instruction!");
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@ -445,7 +445,8 @@ void BytecodeWriter::outputInstructionFormat0(const Instruction *I,
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unsigned NumArgs = I->getNumOperands();
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bool HasExtraArg = false;
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if (isa<CastInst>(I) || isa<InvokeInst>(I) ||
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isa<CmpInst>(I) || isa<VAArgInst>(I) || Opcode == 58)
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isa<CmpInst>(I) || isa<VAArgInst>(I) || Opcode == 58 ||
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Opcode == 62 || Opcode == 63)
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HasExtraArg = true;
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if (const AllocationInst *AI = dyn_cast<AllocationInst>(I))
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HasExtraArg = AI->getAlignment() != 0;
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@ -468,6 +469,12 @@ void BytecodeWriter::outputInstructionFormat0(const Instruction *I,
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} else if (const AllocationInst *AI = dyn_cast<AllocationInst>(I)) {
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if (AI->getAlignment())
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output_vbr((unsigned)Log2_32(AI->getAlignment())+1);
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} else if (Opcode == 62) { // Attributed load
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output_vbr((unsigned)(((Log2_32(cast<LoadInst>(I)->getAlignment())+1)<<1)
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+ (cast<LoadInst>(I)->isVolatile() ? 1 : 0)));
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} else if (Opcode == 63) { // Attributed store
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output_vbr((unsigned)(((Log2_32(cast<StoreInst>(I)->getAlignment())+1)<<1)
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+ (cast<StoreInst>(I)->isVolatile() ? 1 : 0)));
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}
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} else {
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output_vbr(Table.getSlot(I->getOperand(0)));
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@ -616,7 +623,7 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
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unsigned Opcode = I.getOpcode();
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unsigned NumOperands = I.getNumOperands();
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// Encode 'tail call' as 61, 'volatile load' as 62, and 'volatile store' as
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// Encode 'tail call' as 61
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// 63.
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if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
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if (CI->getCallingConv() == CallingConv::C) {
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@ -632,10 +639,6 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
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} else {
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Opcode = 58; // Call escape sequence.
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}
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} else if (isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) {
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Opcode = 62;
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} else if (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile()) {
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Opcode = 63;
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}
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// Figure out which type to encode with the instruction. Typically we want
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@ -744,6 +747,32 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
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} else if (isa<InvokeInst>(I)) {
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// Invoke escape seq has at least 4 operands to encode.
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++NumOperands;
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} else if (const LoadInst *LI = dyn_cast<LoadInst>(&I)) {
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// Encode attributed load as opcode 62
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// We need to encode the attributes of the load instruction as the second
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// operand. Its not really a slot, but we don't want to break the
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// instruction format for these instructions.
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if (LI->getAlignment() || LI->isVolatile()) {
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NumOperands = 2;
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Slots[1] = ((Log2_32(LI->getAlignment())+1)<<1) +
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(LI->isVolatile() ? 1 : 0);
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if (Slots[1] > MaxOpSlot)
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MaxOpSlot = Slots[1];
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Opcode = 62;
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}
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} else if (const StoreInst *SI = dyn_cast<StoreInst>(&I)) {
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// Encode attributed store as opcode 63
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// We need to encode the attributes of the store instruction as the third
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// operand. Its not really a slot, but we don't want to break the
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// instruction format for these instructions.
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if (SI->getAlignment() || SI->isVolatile()) {
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NumOperands = 3;
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Slots[2] = ((Log2_32(SI->getAlignment())+1)<<1) +
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(SI->isVolatile() ? 1 : 0);
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if (Slots[2] > MaxOpSlot)
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MaxOpSlot = Slots[2];
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Opcode = 63;
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}
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}
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// Decide which instruction encoding to use. This is determined primarily
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@ -1307,6 +1307,13 @@ void AssemblyWriter::printInstruction(const Instruction &I) {
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writeOperand(I.getOperand(i), PrintAllTypes);
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}
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}
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// Print post operand alignment for load/store
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if (isa<LoadInst>(I) && cast<LoadInst>(I).getAlignment()) {
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Out << ", align " << cast<LoadInst>(I).getAlignment();
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} else if (isa<StoreInst>(I) && cast<StoreInst>(I).getAlignment()) {
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Out << ", align " << cast<StoreInst>(I).getAlignment();
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}
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printInfoComment(I);
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Out << "\n";
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@ -20,6 +20,7 @@
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#include "llvm/ParameterAttributes.h"
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#include "llvm/Support/CallSite.h"
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#include "llvm/Support/ConstantRange.h"
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#include "llvm/Support/MathExtras.h"
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using namespace llvm;
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unsigned CallSite::getCallingConv() const {
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@ -705,6 +706,7 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef)
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertBef) {
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setVolatile(false);
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setAlignment(0);
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AssertOK();
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setName(Name);
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}
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@ -713,6 +715,7 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAE)
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertAE) {
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setVolatile(false);
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setAlignment(0);
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AssertOK();
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setName(Name);
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}
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@ -722,6 +725,17 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertBef) {
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setVolatile(isVolatile);
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setAlignment(0);
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AssertOK();
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setName(Name);
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}
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LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
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unsigned Align, Instruction *InsertBef)
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertBef) {
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setVolatile(isVolatile);
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setAlignment(Align);
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AssertOK();
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setName(Name);
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}
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@ -731,6 +745,7 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertAE) {
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setVolatile(isVolatile);
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setAlignment(0);
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AssertOK();
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setName(Name);
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}
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@ -741,6 +756,7 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, Instruction *InsertBef)
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertBef) {
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setVolatile(false);
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setAlignment(0);
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AssertOK();
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if (Name && Name[0]) setName(Name);
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}
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@ -749,6 +765,7 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAE)
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertAE) {
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setVolatile(false);
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setAlignment(0);
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AssertOK();
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if (Name && Name[0]) setName(Name);
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}
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@ -758,6 +775,7 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertBef) {
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setVolatile(isVolatile);
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setAlignment(0);
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AssertOK();
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if (Name && Name[0]) setName(Name);
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}
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@ -767,10 +785,15 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
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: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
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Load, Ptr, InsertAE) {
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setVolatile(isVolatile);
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setAlignment(0);
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AssertOK();
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if (Name && Name[0]) setName(Name);
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}
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void LoadInst::setAlignment(unsigned Align) {
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assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
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SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1);
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}
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//===----------------------------------------------------------------------===//
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// StoreInst Implementation
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@ -790,6 +813,7 @@ StoreInst::StoreInst(Value *val, Value *addr, Instruction *InsertBefore)
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Ops[0].init(val, this);
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Ops[1].init(addr, this);
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setVolatile(false);
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setAlignment(0);
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AssertOK();
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}
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@ -798,6 +822,7 @@ StoreInst::StoreInst(Value *val, Value *addr, BasicBlock *InsertAtEnd)
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Ops[0].init(val, this);
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Ops[1].init(addr, this);
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setVolatile(false);
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setAlignment(0);
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AssertOK();
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}
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@ -807,6 +832,17 @@ StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
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Ops[0].init(val, this);
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Ops[1].init(addr, this);
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setVolatile(isVolatile);
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setAlignment(0);
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AssertOK();
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}
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StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
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unsigned Align, Instruction *InsertBefore)
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: Instruction(Type::VoidTy, Store, Ops, 2, InsertBefore) {
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Ops[0].init(val, this);
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Ops[1].init(addr, this);
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setVolatile(isVolatile);
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setAlignment(Align);
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AssertOK();
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}
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@ -816,9 +852,15 @@ StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
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Ops[0].init(val, this);
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Ops[1].init(addr, this);
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setVolatile(isVolatile);
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setAlignment(0);
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AssertOK();
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}
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void StoreInst::setAlignment(unsigned Align) {
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assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
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SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1);
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}
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//===----------------------------------------------------------------------===//
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// GetElementPtrInst Implementation
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//===----------------------------------------------------------------------===//
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