Mercurial > hg > graal-compiler
view graal/com.oracle.graal.compiler.hsail/src/com/oracle/graal/compiler/hsail/HSAILBackend.java @ 12444:b6e3b44ab44f
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 15 Oct 2013 13:51:27 +0200 |
parents | 78e5badf4b8e |
children |
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/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.compiler.hsail; import static com.oracle.graal.api.code.CallingConvention.Type.*; import static com.oracle.graal.api.code.ValueUtil.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.*; import com.oracle.graal.asm.hsail.*; import com.oracle.graal.compiler.gen.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.debug.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.asm.*; import com.oracle.graal.lir.hsail.*; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.util.*; import com.oracle.graal.hsail.*; import java.util.Map; import java.util.HashMap; import java.lang.reflect.Modifier; import java.util.Arrays; /** * HSAIL specific backend. */ public class HSAILBackend extends Backend { private Map<String, String> paramTypeMap = new HashMap<>(); private Buffer codeBuffer; public HSAILBackend(Providers providers, TargetDescription target) { super(providers, target); paramTypeMap.put("HotSpotResolvedPrimitiveType<int>", "s32"); paramTypeMap.put("HotSpotResolvedPrimitiveType<float>", "f32"); paramTypeMap.put("HotSpotResolvedPrimitiveType<double>", "f64"); paramTypeMap.put("HotSpotResolvedPrimitiveType<long>", "s64"); } @Override public boolean shouldAllocateRegisters() { return true; } /** * Use the HSAIL register set when the compilation target is HSAIL. */ @Override public FrameMap newFrameMap() { return new HSAILFrameMap(getCodeCache(), target, new HSAILRegisterConfig()); } @Override public LIRGenerator newLIRGenerator(StructuredGraph graph, FrameMap frameMap, CallingConvention cc, LIR lir) { return new HSAILLIRGenerator(graph, getProviders(), target, frameMap, cc, lir); } public String getPartialCodeString() { return (codeBuffer == null ? "" : new String(codeBuffer.copyData(0, codeBuffer.position()))); } class HotSpotFrameContext implements FrameContext { @Override public void enter(TargetMethodAssembler tasm) { Debug.log("Nothing to do here"); } @Override public void leave(TargetMethodAssembler tasm) { Debug.log("Nothing to do here"); } } @Override protected AbstractAssembler createAssembler(FrameMap frameMap) { return new HSAILAssembler(target); } @Override public TargetMethodAssembler newAssembler(LIRGenerator lirGen, CompilationResult compilationResult) { FrameMap frameMap = lirGen.frameMap; AbstractAssembler masm = new HSAILAssembler(target); HotSpotFrameContext frameContext = new HotSpotFrameContext(); TargetMethodAssembler tasm = new TargetMethodAssembler(target, getCodeCache(), getForeignCalls(), frameMap, masm, frameContext, compilationResult); tasm.setFrameSize(frameMap.frameSize()); return tasm; } @Override public void emitCode(TargetMethodAssembler tasm, LIRGenerator lirGen, ResolvedJavaMethod method) { assert method != null : lirGen.getGraph() + " is not associated with a method"; // Emit the prologue. codeBuffer = tasm.asm.codeBuffer; codeBuffer.emitString0("version 0:95: $full : $large;"); codeBuffer.emitString(""); Signature signature = method.getSignature(); int sigParamCount = signature.getParameterCount(false); // We're subtracting 1 because we're not making the final gid as a parameter. int nonConstantParamCount = sigParamCount - 1; boolean isStatic = (Modifier.isStatic(method.getModifiers())); // Determine if this is an object lambda. boolean isObjectLambda = true; if (signature.getParameterType(nonConstantParamCount, null).getKind() == Kind.Int) { isObjectLambda = false; } else { // Add space for gid int reg. nonConstantParamCount++; } // If this is an instance method, include mappings for the "this" parameter // as the first parameter. if (!isStatic) { nonConstantParamCount++; } // Add in any "constant" parameters (currently none). int totalParamCount = nonConstantParamCount; JavaType[] paramtypes = new JavaType[totalParamCount]; String[] paramNames = new String[totalParamCount]; int pidx = 0; for (int i = 0; i < totalParamCount; i++) { MetaAccessProvider metaAccess = getProviders().getMetaAccess(); if (i == 0 && !isStatic) { paramtypes[i] = metaAccess.lookupJavaType(Object.class); paramNames[i] = "%_this"; } else if (i < nonConstantParamCount) { if (isObjectLambda && (i == (nonConstantParamCount))) { // Set up the gid register mapping. paramtypes[i] = metaAccess.lookupJavaType(int.class); paramNames[i] = "%_gid"; } else { paramtypes[i] = signature.getParameterType(pidx++, null); paramNames[i] = "%_arg" + i; } } } codeBuffer.emitString0("// " + (isStatic ? "static" : "instance") + " method " + method); codeBuffer.emitString(""); codeBuffer.emitString0("kernel &run ("); codeBuffer.emitString(""); FrameMap frameMap = tasm.frameMap; RegisterConfig regConfig = frameMap.registerConfig; // Build list of param types which does include the gid (for cc register mapping query). JavaType[] ccParamTypes = new JavaType[nonConstantParamCount + 1]; // Include the gid. System.arraycopy(paramtypes, 0, ccParamTypes, 0, nonConstantParamCount); // Last entry comes from the signature. ccParamTypes[ccParamTypes.length - 1] = signature.getParameterType(sigParamCount - 1, null); CallingConvention cc = regConfig.getCallingConvention(JavaCallee, null, ccParamTypes, target, false); /** * Compute the hsail size mappings up to but not including the last non-constant parameter * (which is the gid). * */ String[] paramHsailSizes = new String[totalParamCount]; for (int i = 0; i < totalParamCount; i++) { String paramtypeStr = paramtypes[i].toString(); String sizeStr = paramTypeMap.get(paramtypeStr); // Catch all for any unmapped paramtype that is u64 (address of an object). paramHsailSizes[i] = (sizeStr != null ? sizeStr : "u64"); } // Emit the kernel function parameters. for (int i = 0; i < totalParamCount; i++) { String str = "kernarg_" + paramHsailSizes[i] + " " + paramNames[i]; if (i != totalParamCount - 1) { str += ","; } codeBuffer.emitString(str); } codeBuffer.emitString(") {"); /* * End of parameters start of prolog code. Emit the load instructions for loading of the * kernel non-constant parameters into registers. The constant class parameters will not be * loaded up front but will be loaded as needed. */ for (int i = 0; i < nonConstantParamCount; i++) { codeBuffer.emitString("ld_kernarg_" + paramHsailSizes[i] + " " + HSAIL.mapRegister(cc.getArgument(i)) + ", [" + paramNames[i] + "];"); } /* * Emit the workitemaid instruction for loading the hidden gid parameter. This is assigned * the register as if it were the last of the nonConstant parameters. */ String workItemReg = "$s" + Integer.toString(asRegister(cc.getArgument(nonConstantParamCount)).encoding()); codeBuffer.emitString("workitemabsid_u32 " + workItemReg + ", 0;"); /* * Note the logic used for this spillseg size is to leave space and then go back and patch * in the correct size once we have generated all the instructions. This should probably be * done in a more robust way by implementing something like codeBuffer.insertString. */ int spillsegDeclarationPosition = codeBuffer.position() + 1; String spillsegTemplate = "align 4 spill_u8 %spillseg[123456];"; codeBuffer.emitString(spillsegTemplate); // Emit object array load prologue here. if (isObjectLambda) { final int arrayElementsOffset = 24; String iterationObjArgReg = HSAIL.mapRegister(cc.getArgument(nonConstantParamCount - 1)); String tmpReg = workItemReg.replace("s", "d"); // "$d1"; // Convert gid to long. codeBuffer.emitString("cvt_u64_s32 " + tmpReg + ", " + workItemReg + "; // Convert gid to long"); // Adjust index for sizeof ref. codeBuffer.emitString("mul_u64 " + tmpReg + ", " + tmpReg + ", " + 8 + "; // Adjust index for sizeof ref"); // Adjust for actual data start. codeBuffer.emitString("add_u64 " + tmpReg + ", " + tmpReg + ", " + arrayElementsOffset + "; // Adjust for actual elements data start"); // Add to array ref ptr. codeBuffer.emitString("add_u64 " + tmpReg + ", " + tmpReg + ", " + iterationObjArgReg + "; // Add to array ref ptr"); // Load the object into the parameter reg. codeBuffer.emitString("ld_global_u64 " + iterationObjArgReg + ", " + "[" + tmpReg + "]" + "; // Load from array element into parameter reg"); } // Prologue done, Emit code for the LIR. lirGen.lir.emitCode(tasm); // Now that code is emitted go back and figure out what the upper Bound stack size was. long maxStackSize = ((HSAILAssembler) tasm.asm).upperBoundStackSize(); String spillsegStringFinal; if (maxStackSize == 0) { // If no spilling, get rid of spillseg declaration. char[] array = new char[spillsegTemplate.length()]; Arrays.fill(array, ' '); spillsegStringFinal = new String(array); } else { spillsegStringFinal = spillsegTemplate.replace("123456", String.format("%6d", maxStackSize)); } codeBuffer.emitString(spillsegStringFinal, spillsegDeclarationPosition); // Emit the epilogue. codeBuffer.emitString0("};"); codeBuffer.emitString(""); } }