Examples with SpecialRegister com.oracle.svm.core.graal.llvm.LLVMGenerator.SpecialRegister used on opensource projects

Example 1 with SpecialRegister

use of com.oracle.svm.core.graal.llvm.LLVMGenerator.SpecialRegister in project graal by oracle.

the class NodeLLVMBuilder method getUnknownCallReturnType.

private LLVMTypeRef getUnknownCallReturnType(LoweredCallTargetNode callTarget) {
    LLVMTypeRef retType = gen.getLLVMType(callTarget.returnStamp().getTrustedStamp());
    if (!((SubstrateCallingConventionType) callTarget.callType()).nativeABI()) {
        boolean voidReturnType = LLVMIRBuilder.isVoidType(retType);
        LLVMTypeRef[] returnTypes = new LLVMTypeRef[SpecialRegister.count() + (voidReturnType ? 0 : 1)];
        for (SpecialRegister reg : SpecialRegister.registers()) {
            returnTypes[reg.getIndex()] = builder.wordType();
        }
        if (!voidReturnType) {
            returnTypes[SpecialRegister.count()] = retType;
        }
        retType = builder.structType(returnTypes);
    }
    return retType;
}

Example 2 with SpecialRegister

use of com.oracle.svm.core.graal.llvm.LLVMGenerator.SpecialRegister in project graal by oracle.

the class NodeLLVMBuilder method doBlock.

@Override
public void doBlock(Block block, StructuredGraph graph, BlockMap<List<Node>> blockMap) {
    assert !processedBlocks.contains(block) : "Block already processed " + block;
    assert verifyPredecessors(block);
    gen.beginBlock(block);
    if (block == graph.getLastSchedule().getCFG().getStartBlock()) {
        assert block.getPredecessorCount() == 0;
        long startPatchpointID = LLVMGenerator.nextPatchpointId.getAndIncrement();
        builder.buildStackmap(builder.constantLong(startPatchpointID));
        gen.getCompilationResult().recordInfopoint(NumUtil.safeToInt(startPatchpointID), null, InfopointReason.METHOD_START);
        for (ParameterNode param : graph.getNodes(ParameterNode.TYPE)) {
            int offset = (gen.isEntryPoint() ? 0 : SpecialRegister.count());
            LLVMValueRef paramValue = builder.getFunctionParam(param.index() + offset);
            setResult(param, paramValue);
        }
        for (SpecialRegister reg : SpecialRegister.registers()) {
            gen.setInitialSpecialRegisterValue(reg, gen.isEntryPoint() ? builder.constantNull(builder.wordType()) : builder.getFunctionParam(reg.getIndex()));
        }
        gen.getDebugInfoPrinter().printFunction(graph, this);
    } else {
        assert block.getPredecessorCount() > 0;
        // create phi-in value array
        AbstractBeginNode begin = block.getBeginNode();
        if (begin instanceof AbstractMergeNode) {
            AbstractMergeNode merge = (AbstractMergeNode) begin;
            for (SpecialRegister reg : SpecialRegister.registers()) {
                List<LLVMValueRef> forwardPredValues = new ArrayList<>();
                List<LLVMBasicBlockRef> forwardBlocks = new ArrayList<>();
                for (Block predecessor : block.getPredecessors()) {
                    if (processedBlocks.contains(predecessor)) {
                        forwardPredValues.add(block.isExceptionEntry() ? gen.getHandlerSpecialRegisterValue(reg, predecessor) : gen.getSpecialRegisterValue(reg, predecessor));
                        forwardBlocks.add(gen.getBlockEnd(predecessor));
                    }
                }
                LLVMValueRef registerPhi = builder.buildPhi(builder.wordType(), forwardPredValues.toArray(new LLVMValueRef[0]), forwardBlocks.toArray(new LLVMBasicBlockRef[0]));
                gen.setInitialSpecialRegisterValue(reg, registerPhi);
            }
            for (ValuePhiNode phiNode : merge.valuePhis()) {
                List<LLVMValueRef> forwardPhis = new ArrayList<>();
                List<LLVMBasicBlockRef> forwardBlocks = new ArrayList<>();
                LLVMTypeRef phiType = getLLVMType(phiNode);
                boolean hasBackwardIncomingEdges = false;
                for (Block predecessor : block.getPredecessors()) {
                    if (processedBlocks.contains(predecessor)) {
                        ValueNode phiValue = phiNode.valueAt((AbstractEndNode) predecessor.getEndNode());
                        LLVMValueRef value;
                        if (operand(phiValue) instanceof LLVMPendingSpecialRegisterRead) {
                            /*
                                 * The pending read may need to perform instructions to load the
                                 * value, so we put them at the end of the predecessor block
                                 */
                            Block currentBlock = (Block) gen.getCurrentBlock();
                            gen.editBlock(predecessor);
                            value = llvmOperand(phiValue);
                            gen.resumeBlock(currentBlock);
                        } else {
                            value = llvmOperand(phiValue);
                        }
                        LLVMBasicBlockRef parentBlock = gen.getBlockEnd(predecessor);
                        forwardPhis.add(value);
                        forwardBlocks.add(parentBlock);
                    } else {
                        hasBackwardIncomingEdges = true;
                    }
                }
                LLVMValueRef[] incomingValues = forwardPhis.toArray(new LLVMValueRef[0]);
                LLVMBasicBlockRef[] incomingBlocks = forwardBlocks.toArray(new LLVMBasicBlockRef[0]);
                LLVMValueRef phi = builder.buildPhi(phiType, incomingValues, incomingBlocks);
                if (hasBackwardIncomingEdges) {
                    backwardsPhi.put(phiNode, phi);
                }
                setResult(phiNode, phi);
            }
        } else {
            assert block.getPredecessorCount() == 1;
            Block predecessor = block.getFirstPredecessor();
            for (SpecialRegister reg : SpecialRegister.registers()) {
                gen.setInitialSpecialRegisterValue(reg, block.isExceptionEntry() ? gen.getHandlerSpecialRegisterValue(reg, predecessor) : gen.getSpecialRegisterValue(reg, predecessor));
            }
        }
    }
    gen.getDebugInfoPrinter().printBlock(block);
    for (Node node : blockMap.get(block)) {
        if (node instanceof ValueNode) {
            /*
                 * There can be cases in which the result of an instruction is already set before by
                 * other instructions.
                 */
            if (!valueMap.containsKey(node)) {
                ValueNode valueNode = (ValueNode) node;
                try {
                    gen.getDebugInfoPrinter().printNode(valueNode);
                    emitNode(valueNode);
                } catch (GraalError e) {
                    throw GraalGraphError.transformAndAddContext(e, valueNode);
                } catch (Throwable e) {
                    throw new GraalGraphError(e).addContext(valueNode);
                }
            }
        }
    }
    if (builder.blockTerminator(gen.getBlockEnd(block)) == null) {
        NodeIterable<Node> successors = block.getEndNode().successors();
        assert successors.count() == block.getSuccessorCount();
        if (block.getSuccessorCount() != 1) {
            /*
                 * If we have more than one successor, we cannot just use the first one. Since
                 * successors are unordered, this would be a random choice.
                 */
            throw new GraalError("Block without BlockEndOp: " + block.getEndNode());
        }
        builder.buildBranch(gen.getBlock(block.getFirstSuccessor()));
    }
    processedBlocks.add(block);
}

Example 3 with SpecialRegister

use of com.oracle.svm.core.graal.llvm.LLVMGenerator.SpecialRegister in project graal by oracle.

the class NodeLLVMBuilder method visitLoopEnd.

@Override
public void visitLoopEnd(LoopEndNode i) {
    LLVMBasicBlockRef[] basicBlocks = new LLVMBasicBlockRef[] { gen.getBlockEnd((Block) gen.getCurrentBlock()) };
    assert gen.getCurrentBlock().getSuccessorCount() == 1;
    for (SpecialRegister reg : SpecialRegister.registers()) {
        Block successor = ((Block) gen.getCurrentBlock()).getFirstSuccessor();
        LLVMValueRef phi = gen.getInitialSpecialRegisterValue(reg, successor);
        assert LLVM.LLVMGetInstructionOpcode(phi) == LLVM.LLVMPHI;
        builder.addIncoming(phi, new LLVMValueRef[] { gen.getSpecialRegisterValue(reg) }, basicBlocks);
    }
    for (ValuePhiNode phiNode : i.merge().valuePhis()) {
        LLVMValueRef phi = backwardsPhi.get(phiNode);
        LLVMValueRef value = llvmOperand(phiNode.valueAt(i));
        LLVMValueRef[] values = new LLVMValueRef[] { value };
        builder.addIncoming(phi, values, basicBlocks);
    }
}