RSKernelExpand.cpp revision 5010f641d1df6bc3447646ca7ef837410fb9b3dc
1db169187dea4602e4ad32058762d23d474753fd0Stephen Hines/* 2db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * Copyright 2012, The Android Open Source Project 3db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * 4db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * Licensed under the Apache License, Version 2.0 (the "License"); 5db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * you may not use this file except in compliance with the License. 6db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * You may obtain a copy of the License at 7db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * 8db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * http://www.apache.org/licenses/LICENSE-2.0 9db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * 10db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * Unless required by applicable law or agreed to in writing, software 11db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * distributed under the License is distributed on an "AS IS" BASIS, 12db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * See the License for the specific language governing permissions and 14db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * limitations under the License. 15db169187dea4602e4ad32058762d23d474753fd0Stephen Hines */ 16db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 176e9e89d1ed049ec931bb1000948c12698e6c5484Stephen Hines#include "bcc/Assert.h" 18e198abec6c5e3eab380ccf6897b0a0b9c2dd92ddStephen Hines#include "bcc/Renderscript/RSTransforms.h" 197a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao 207a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao#include <cstdlib> 217a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao 22b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/DerivedTypes.h> 23b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/Function.h> 24b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/Instructions.h> 25b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/IRBuilder.h> 2618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser#include <llvm/IR/MDBuilder.h> 27b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/Module.h> 28c72c4ddfcd79c74f70713da91a69569451b5c19eZonr Chang#include <llvm/Pass.h> 297ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines#include <llvm/Support/raw_ostream.h> 30b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/DataLayout.h> 31cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser#include <llvm/IR/Function.h> 32b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines#include <llvm/IR/Type.h> 33806075b3a54af826fea78490fb213d8a0784138eTobias Grosser#include <llvm/Transforms/Utils/BasicBlockUtils.h> 34c72c4ddfcd79c74f70713da91a69569451b5c19eZonr Chang 35c72c4ddfcd79c74f70713da91a69569451b5c19eZonr Chang#include "bcc/Config/Config.h" 36ef73a242762bcd8113b9b65ceccbe7d909b5acbcZonr Chang#include "bcc/Support/Log.h" 37db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 38d88177580db4ddedf680854c51db333c97eabc59Stephen Hines#include "bcinfo/MetadataExtractor.h" 39d88177580db4ddedf680854c51db333c97eabc59Stephen Hines 405010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes#define NUM_EXPANDED_FUNCTION_PARAMS 4 41bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 427a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaousing namespace bcc; 437a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao 44db169187dea4602e4ad32058762d23d474753fd0Stephen Hinesnamespace { 457a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao 4614588cf0babf4596f1bcf4ea05ddd2ceb458a916Logan Chienstatic const bool gEnableRsTbaa = true; 479c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines 487a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao/* RSForEachExpandPass - This pass operates on functions that are able to be 497a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao * called via rsForEach() or "foreach_<NAME>". We create an inner loop for the 507a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao * ForEach-able function to be invoked over the appropriate data cells of the 517a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao * input/output allocations (adjusting other relevant parameters as we go). We 527a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao * support doing this for any ForEach-able compute kernels. The new function 537a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao * name is the original function name followed by ".expand". Note that we 547a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao * still generate code for the original function. 557a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao */ 567a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaoclass RSForEachExpandPass : public llvm::ModulePass { 577a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaoprivate: 58db169187dea4602e4ad32058762d23d474753fd0Stephen Hines static char ID; 59db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 60bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Module *Module; 61bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::LLVMContext *Context; 62bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 63bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes /* 64bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * Pointer to LLVM type information for the ForEachStubType and the function 65bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * signature for expanded kernels. These must be re-calculated for each 66bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * module the pass is run on. 67bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes */ 68bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::StructType *ForEachStubType; 69bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::FunctionType *ExpandedFunctionType; 70db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 7125eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines uint32_t mExportForEachCount; 7225eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines const char **mExportForEachNameList; 7325eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines const uint32_t *mExportForEachSignatureList; 74cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines 752b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // Turns on optimization of allocation stride values. 762b04086acbef6520ae2c54a868b1271abf053122Stephen Hines bool mEnableStepOpt; 772b04086acbef6520ae2c54a868b1271abf053122Stephen Hines 78bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes uint32_t getRootSignature(llvm::Function *Function) { 79db169187dea4602e4ad32058762d23d474753fd0Stephen Hines const llvm::NamedMDNode *ExportForEachMetadata = 80bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Module->getNamedMetadata("#rs_export_foreach"); 81db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 82db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (!ExportForEachMetadata) { 83db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::SmallVector<llvm::Type*, 8> RootArgTys; 84bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes for (llvm::Function::arg_iterator B = Function->arg_begin(), 85bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes E = Function->arg_end(); 86db169187dea4602e4ad32058762d23d474753fd0Stephen Hines B != E; 87db169187dea4602e4ad32058762d23d474753fd0Stephen Hines ++B) { 88db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgTys.push_back(B->getType()); 89db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 90db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 91db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // For pre-ICS bitcode, we may not have signature information. In that 92db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // case, we use the size of the RootArgTys to select the number of 93db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // arguments. 94db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return (1 << RootArgTys.size()) - 1; 95db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 96db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 977ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines if (ExportForEachMetadata->getNumOperands() == 0) { 987ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines return 0; 997ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 1007ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 1016e9e89d1ed049ec931bb1000948c12698e6c5484Stephen Hines bccAssert(ExportForEachMetadata->getNumOperands() > 0); 102db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 103cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines // We only handle the case for legacy root() functions here, so this is 104cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines // hard-coded to look at only the first such function. 105db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::MDNode *SigNode = ExportForEachMetadata->getOperand(0); 106db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (SigNode != NULL && SigNode->getNumOperands() == 1) { 107db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::Value *SigVal = SigNode->getOperand(0); 108db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (SigVal->getValueID() == llvm::Value::MDStringVal) { 109db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::StringRef SigString = 110db169187dea4602e4ad32058762d23d474753fd0Stephen Hines static_cast<llvm::MDString*>(SigVal)->getString(); 111db169187dea4602e4ad32058762d23d474753fd0Stephen Hines uint32_t Signature = 0; 112db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (SigString.getAsInteger(10, Signature)) { 113db169187dea4602e4ad32058762d23d474753fd0Stephen Hines ALOGE("Non-integer signature value '%s'", SigString.str().c_str()); 114db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return 0; 115db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 116db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return Signature; 117db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 118db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 119db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 120db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return 0; 121db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 122db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 1232b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // Get the actual value we should use to step through an allocation. 1247b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 1257b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // Normally the value we use to step through an allocation is given to us by 1267b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // the driver. However, for certain primitive data types, we can derive an 1277b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // integer constant for the step value. We use this integer constant whenever 1287b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // possible to allow further compiler optimizations to take place. 1297b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 130b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines // DL - Target Data size/layout information. 1312b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // T - Type of allocation (should be a pointer). 1322b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // OrigStep - Original step increment (root.expand() input from driver). 133bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *getStepValue(llvm::DataLayout *DL, llvm::Type *AllocType, 1342b04086acbef6520ae2c54a868b1271abf053122Stephen Hines llvm::Value *OrigStep) { 135b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines bccAssert(DL); 136bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(AllocType); 1372b04086acbef6520ae2c54a868b1271abf053122Stephen Hines bccAssert(OrigStep); 138bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::PointerType *PT = llvm::dyn_cast<llvm::PointerType>(AllocType); 139bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *VoidPtrTy = llvm::Type::getInt8PtrTy(*Context); 140bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (mEnableStepOpt && AllocType != VoidPtrTy && PT) { 1412b04086acbef6520ae2c54a868b1271abf053122Stephen Hines llvm::Type *ET = PT->getElementType(); 142b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines uint64_t ETSize = DL->getTypeAllocSize(ET); 143bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *Int32Ty = llvm::Type::getInt32Ty(*Context); 1442b04086acbef6520ae2c54a868b1271abf053122Stephen Hines return llvm::ConstantInt::get(Int32Ty, ETSize); 1452b04086acbef6520ae2c54a868b1271abf053122Stephen Hines } else { 1462b04086acbef6520ae2c54a868b1271abf053122Stephen Hines return OrigStep; 1472b04086acbef6520ae2c54a868b1271abf053122Stephen Hines } 1482b04086acbef6520ae2c54a868b1271abf053122Stephen Hines } 1492b04086acbef6520ae2c54a868b1271abf053122Stephen Hines 150e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_INS 0 151e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_INESTRIDES 1 152e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_OUT 2 153e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_Y 3 154e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_Z 4 155e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_LID 5 156e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_USR 6 157e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_DIMX 7 158e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_DIMY 8 159e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_DIMZ 9 160e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_SLOT 10 161097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 162097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes /// Builds the types required by the pass for the given context. 163bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes void buildTypes(void) { 164bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes // Create the RsForEachStubParam struct. 165bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 166097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *VoidPtrTy = llvm::Type::getInt8PtrTy(*Context); 167097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *VoidPtrPtrTy = VoidPtrTy->getPointerTo(); 168097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *Int32Ty = llvm::Type::getInt32Ty(*Context); 169097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *Int32PtrTy = Int32Ty->getPointerTo(); 170097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 171097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes /* Defined in frameworks/base/libs/rs/cpu_ref/rsCpuCore.h: 172db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * 173097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * struct RsForEachKernelStruct{ 174db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * const void *in; 175db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * void *out; 176db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * uint32_t y; 177db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * uint32_t z; 178097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t lid; 179881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * const void **ins; 180e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes * uint32_t *inEStrides; 181097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * const void *usr; 182097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t dimX; 183097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t dimY; 184097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t dimZ; 185097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t slot; 186db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * }; 187db169187dea4602e4ad32058762d23d474753fd0Stephen Hines */ 188097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::SmallVector<llvm::Type*, 12> StructTypes; 189e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes StructTypes.push_back(VoidPtrPtrTy); // const void **ins 190e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes StructTypes.push_back(Int32PtrTy); // uint32_t *inEStrides 191097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(VoidPtrTy); // void *out 192097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t y 193097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t z 194097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t lid 195097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(VoidPtrTy); // const void *usr 196097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t dimX 197097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t dimY 198097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t dimZ 199097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t slot 200881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 201bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ForEachStubType = 202bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::StructType::create(StructTypes, "RsForEachStubParamStruct"); 203bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 204bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes // Create the function type for expanded kernels. 205bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 206bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *ForEachStubPtrTy = ForEachStubType->getPointerTo(); 207bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 208bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::SmallVector<llvm::Type*, 8> ParamTypes; 209bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(ForEachStubPtrTy); // const RsForEachStubParamStruct *p 210bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(Int32Ty); // uint32_t x1 211bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(Int32Ty); // uint32_t x2 212bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(Int32Ty); // uint32_t outstep 213bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 214e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes ExpandedFunctionType = 215e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::FunctionType::get(llvm::Type::getVoidTy(*Context), ParamTypes, 216e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes false); 2178ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 2188ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 219357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// @brief Create skeleton of the expanded function. 220357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// 221357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// This creates a function with the following signature: 222357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// 223357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// void (const RsForEachStubParamStruct *p, uint32_t x1, uint32_t x2, 2245010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes /// uint32_t outstep) 225357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// 226357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser llvm::Function *createEmptyExpandedFunction(llvm::StringRef OldName) { 227bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *ExpandedFunction = 228bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::Create(ExpandedFunctionType, 229bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::GlobalValue::ExternalLinkage, 230bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes OldName + ".expand", Module); 231bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 232bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(ExpandedFunction->arg_size() == NUM_EXPANDED_FUNCTION_PARAMS); 233bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 234bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator AI = ExpandedFunction->arg_begin(); 235bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 236bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("p"); 237bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("x1"); 238bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("x2"); 239bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("arg_outstep"); 240bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 241bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::BasicBlock *Begin = llvm::BasicBlock::Create(*Context, "Begin", 242bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ExpandedFunction); 243806075b3a54af826fea78490fb213d8a0784138eTobias Grosser llvm::IRBuilder<> Builder(Begin); 244806075b3a54af826fea78490fb213d8a0784138eTobias Grosser Builder.CreateRetVoid(); 245806075b3a54af826fea78490fb213d8a0784138eTobias Grosser 246bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes return ExpandedFunction; 247357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser } 248357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser 249e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @brief Create an empty loop 250e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 251e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// Create a loop of the form: 252e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 253e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// for (i = LowerBound; i < UpperBound; i++) 254e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// ; 255e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 256e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// After the loop has been created, the builder is set such that 257e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// instructions can be added to the loop body. 258e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 259e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param Builder The builder to use to build this loop. The current 260e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// position of the builder is the position the loop 261e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// will be inserted. 262e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param LowerBound The first value of the loop iterator 263e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param UpperBound The maximal value of the loop iterator 264e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param LoopIV A reference that will be set to the loop iterator. 265e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @return The BasicBlock that will be executed after the loop. 266e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::BasicBlock *createLoop(llvm::IRBuilder<> &Builder, 267e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *LowerBound, 268e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *UpperBound, 269e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode **LoopIV) { 270e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser assert(LowerBound->getType() == UpperBound->getType()); 271e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 272e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::BasicBlock *CondBB, *AfterBB, *HeaderBB; 273e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *Cond, *IVNext; 274e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode *IV; 275e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 276e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser CondBB = Builder.GetInsertBlock(); 277e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser AfterBB = llvm::SplitBlock(CondBB, Builder.GetInsertPoint(), this); 278bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes HeaderBB = llvm::BasicBlock::Create(*Context, "Loop", CondBB->getParent()); 279e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 280e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // if (LowerBound < Upperbound) 281e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto LoopHeader 282e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // else 283e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto AfterBB 284e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser CondBB->getTerminator()->eraseFromParent(); 285e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.SetInsertPoint(CondBB); 286e87a0518647d1f9c5249d6990c67737e0fb579e9Tobias Grosser Cond = Builder.CreateICmpULT(LowerBound, UpperBound); 287e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.CreateCondBr(Cond, HeaderBB, AfterBB); 288e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 289e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // iv = PHI [CondBB -> LowerBound], [LoopHeader -> NextIV ] 290e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // iv.next = iv + 1 291e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // if (iv.next < Upperbound) 292e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto LoopHeader 293e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // else 294e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto AfterBB 295e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.SetInsertPoint(HeaderBB); 296e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IV = Builder.CreatePHI(LowerBound->getType(), 2, "X"); 297e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IV->addIncoming(LowerBound, CondBB); 298e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IVNext = Builder.CreateNUWAdd(IV, Builder.getInt32(1)); 299e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IV->addIncoming(IVNext, HeaderBB); 300e87a0518647d1f9c5249d6990c67737e0fb579e9Tobias Grosser Cond = Builder.CreateICmpULT(IVNext, UpperBound); 301e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.CreateCondBr(Cond, HeaderBB, AfterBB); 302e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser AfterBB->setName("Exit"); 303e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.SetInsertPoint(HeaderBB->getFirstNonPHI()); 304e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser *LoopIV = IV; 305e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser return AfterBB; 306e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser } 307e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 3088ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosserpublic: 30925eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines RSForEachExpandPass(bool pEnableStepOpt) 310bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes : ModulePass(ID), Module(NULL), Context(NULL), 311bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes mEnableStepOpt(pEnableStepOpt) { 312bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 3138ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 3148ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 3158ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser /* Performs the actual optimization on a selected function. On success, the 3168ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser * Module will contain a new function of the name "<NAME>.expand" that 3178ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser * invokes <NAME>() in a loop with the appropriate parameters. 3188ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser */ 319bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool ExpandFunction(llvm::Function *Function, uint32_t Signature) { 320bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ALOGV("Expanding ForEach-able Function %s", 321bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Function->getName().str().c_str()); 3228ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 3238ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser if (!Signature) { 324bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Signature = getRootSignature(Function); 3258ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser if (!Signature) { 3268ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser // We couldn't determine how to expand this function based on its 3278ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser // function signature. 3288ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser return false; 3298ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 3308ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 3318ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 332bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::DataLayout DL(Module); 3338ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 334bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *ExpandedFunction = 335bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes createEmptyExpandedFunction(Function->getName()); 336db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 337bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(ExpandedFunction->arg_size() == NUM_EXPANDED_FUNCTION_PARAMS); 338db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 339bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes /* 340bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * Extract the expanded function's parameters. It is guaranteed by 341bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * createEmptyExpandedFunction that there will be five parameters. 342bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes */ 343bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator ExpandedFunctionArgIter = 344bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ExpandedFunction->arg_begin(); 345db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 346bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_p = &*(ExpandedFunctionArgIter++); 347bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x1 = &*(ExpandedFunctionArgIter++); 348bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x2 = &*(ExpandedFunctionArgIter++); 3495010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes llvm::Value *Arg_outstep = &*(ExpandedFunctionArgIter); 350bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 351bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *InStep = NULL; 3522b04086acbef6520ae2c54a868b1271abf053122Stephen Hines llvm::Value *OutStep = NULL; 353db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 354db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // Construct the actual function body. 355bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::IRBuilder<> Builder(ExpandedFunction->getEntryBlock().begin()); 356db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 357cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines // Collect and construct the arguments for the kernel(). 358db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // Note that we load any loop-invariant arguments before entering the Loop. 359bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator FunctionArgIter = Function->arg_begin(); 360db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 361e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Type *InTy = NULL; 362ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser llvm::Value *InBasePtr = NULL; 363d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureIn(Signature)) { 364e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InsMember = Builder.CreateStructGEP(Arg_p, 365e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes PARAM_FIELD_INS); 366e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InsBasePtr = Builder.CreateLoad(InsMember, "inputs_base"); 367e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 368e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InStepsMember = 369e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_INESTRIDES); 370e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InStepsBase = Builder.CreateLoad(InStepsMember, 371e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes "insteps_base"); 372e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 373e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *IndexVal = Builder.getInt32(0); 374e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 375e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InStepAddr = Builder.CreateGEP(InStepsBase, IndexVal); 376e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InStepArg = Builder.CreateLoad(InStepAddr, 377e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes "instep_addr"); 378e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 379bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes InTy = (FunctionArgIter++)->getType(); 380e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes InStep = getStepValue(&DL, InTy, InStepArg); 381e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 3822b04086acbef6520ae2c54a868b1271abf053122Stephen Hines InStep->setName("instep"); 383e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 384e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InputAddr = Builder.CreateGEP(InsBasePtr, IndexVal); 385e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes InBasePtr = Builder.CreateLoad(InputAddr, "input_base"); 386db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 387db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 388db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::Type *OutTy = NULL; 38902f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser llvm::Value *OutBasePtr = NULL; 390d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureOut(Signature)) { 391bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes OutTy = (FunctionArgIter++)->getType(); 392b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines OutStep = getStepValue(&DL, OutTy, Arg_outstep); 3932b04086acbef6520ae2c54a868b1271abf053122Stephen Hines OutStep->setName("outstep"); 394097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes OutBasePtr = Builder.CreateLoad( 395097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_OUT)); 396db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 397db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 398db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::Value *UsrData = NULL; 399d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureUsrData(Signature)) { 400bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *UsrDataTy = (FunctionArgIter++)->getType(); 401db169187dea4602e4ad32058762d23d474753fd0Stephen Hines UsrData = Builder.CreatePointerCast(Builder.CreateLoad( 402097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_USR)), UsrDataTy); 403db169187dea4602e4ad32058762d23d474753fd0Stephen Hines UsrData->setName("UsrData"); 404db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 405db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 406d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 407bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes FunctionArgIter++; 408db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 409db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 410db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::Value *Y = NULL; 411d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureY(Signature)) { 412097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Y = Builder.CreateLoad( 413097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_Y), "Y"); 414097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 415bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes FunctionArgIter++; 416db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 417db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 418bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(FunctionArgIter == Function->arg_end()); 419db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 420e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode *IV; 421e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser createLoop(Builder, Arg_x1, Arg_x2, &IV); 422db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 423cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines // Populate the actual call to kernel(). 424db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::SmallVector<llvm::Value*, 8> RootArgs; 425db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 426bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *InPtr = NULL; 4277ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines llvm::Value *OutPtr = NULL; 428db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 429ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser // Calculate the current input and output pointers 43002f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // 431ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser // We always calculate the input/output pointers with a GEP operating on i8 43202f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // values and only cast at the very end to OutTy. This is because the step 43302f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // between two values is given in bytes. 43402f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // 43502f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // TODO: We could further optimize the output by using a GEP operation of 43602f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // type 'OutTy' in cases where the element type of the allocation allows. 43702f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser if (OutBasePtr) { 43802f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser llvm::Value *OutOffset = Builder.CreateSub(IV, Arg_x1); 43902f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser OutOffset = Builder.CreateMul(OutOffset, OutStep); 44002f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser OutPtr = Builder.CreateGEP(OutBasePtr, OutOffset); 44102f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser OutPtr = Builder.CreatePointerCast(OutPtr, OutTy); 44202f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser } 443bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 444ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser if (InBasePtr) { 445ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser llvm::Value *InOffset = Builder.CreateSub(IV, Arg_x1); 446ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser InOffset = Builder.CreateMul(InOffset, InStep); 447ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser InPtr = Builder.CreateGEP(InBasePtr, InOffset); 448ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser InPtr = Builder.CreatePointerCast(InPtr, InTy); 449ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser } 45002f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser 451ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser if (InPtr) { 4527ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(InPtr); 453db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 454db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 45502f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser if (OutPtr) { 4567ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(OutPtr); 457db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 458db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 459db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (UsrData) { 460db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgs.push_back(UsrData); 461db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 462db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 463e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *X = IV; 464d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 465db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgs.push_back(X); 466db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 467db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 468db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (Y) { 469db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgs.push_back(Y); 470db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 471db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 472bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Builder.CreateCall(Function, RootArgs); 473db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 4747ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines return true; 4757ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 4767ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 4777ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines /* Expand a pass-by-value kernel. 4787ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines */ 479bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool ExpandKernel(llvm::Function *Function, uint32_t Signature) { 480d88177580db4ddedf680854c51db333c97eabc59Stephen Hines bccAssert(bcinfo::MetadataExtractor::hasForEachSignatureKernel(Signature)); 481bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ALOGV("Expanding kernel Function %s", Function->getName().str().c_str()); 4827ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 4837ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines // TODO: Refactor this to share functionality with ExpandFunction. 484bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::DataLayout DL(Module); 4857ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 486bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *ExpandedFunction = 487bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes createEmptyExpandedFunction(Function->getName()); 4887ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 489bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes /* 490bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * Extract the expanded function's parameters. It is guaranteed by 491bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * createEmptyExpandedFunction that there will be five parameters. 492bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes */ 493881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 494881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes bccAssert(ExpandedFunction->arg_size() == NUM_EXPANDED_FUNCTION_PARAMS); 495881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 496bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator ExpandedFunctionArgIter = 497bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ExpandedFunction->arg_begin(); 498bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 499bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_p = &*(ExpandedFunctionArgIter++); 500bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x1 = &*(ExpandedFunctionArgIter++); 501bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x2 = &*(ExpandedFunctionArgIter++); 5025010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes llvm::Value *Arg_outstep = &*(ExpandedFunctionArgIter); 5037ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 5047ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines // Construct the actual function body. 505bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::IRBuilder<> Builder(ExpandedFunction->getEntryBlock().begin()); 5067ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 50718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // Create TBAA meta-data. 50818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser llvm::MDNode *TBAARenderScript, *TBAAAllocation, *TBAAPointer; 509bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDBuilder MDHelper(*Context); 51014588cf0babf4596f1bcf4ea05ddd2ceb458a916Logan Chien 51118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser TBAARenderScript = MDHelper.createTBAARoot("RenderScript TBAA"); 512e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAAllocation = MDHelper.createTBAAScalarTypeNode("allocation", 513e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAARenderScript); 514e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAAllocation = MDHelper.createTBAAStructTagNode(TBAAAllocation, 515e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAAllocation, 0); 516e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAPointer = MDHelper.createTBAAScalarTypeNode("pointer", 517e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAARenderScript); 51814588cf0babf4596f1bcf4ea05ddd2ceb458a916Logan Chien TBAAPointer = MDHelper.createTBAAStructTagNode(TBAAPointer, TBAAPointer, 0); 51918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 520881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes /* 521881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * Collect and construct the arguments for the kernel(). 522881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * 523881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * Note that we load any loop-invariant arguments before entering the Loop. 524881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes */ 525881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes size_t NumInputs = Function->arg_size(); 5267ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 527881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *Y = NULL; 528881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (bcinfo::MetadataExtractor::hasForEachSignatureY(Signature)) { 529097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Y = Builder.CreateLoad( 530097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_Y), "Y"); 531097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 532881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes --NumInputs; 533881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 534881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 535881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 536881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes --NumInputs; 537881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 538881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 539881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // No usrData parameter on kernels. 540881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes bccAssert( 541881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes !bcinfo::MetadataExtractor::hasForEachSignatureUsrData(Signature)); 542881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 543881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Function::arg_iterator ArgIter = Function->arg_begin(); 544881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 545881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // Check the return type 546881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Type *OutTy = NULL; 547881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *OutStep = NULL; 54818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser llvm::LoadInst *OutBasePtr = NULL; 549881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 550e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes bool PassOutByPointer = false; 551881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 552d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureOut(Signature)) { 553bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *OutBaseTy = Function->getReturnType(); 554881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 55574a4b08235990916911b8fe758d656c1171faf26Stephen Hines if (OutBaseTy->isVoidTy()) { 556e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes PassOutByPointer = true; 557881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes OutTy = ArgIter->getType(); 558881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 559881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes ArgIter++; 560881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes --NumInputs; 56174a4b08235990916911b8fe758d656c1171faf26Stephen Hines } else { 56274a4b08235990916911b8fe758d656c1171faf26Stephen Hines // We don't increment Args, since we are using the actual return type. 563881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes OutTy = OutBaseTy->getPointerTo(); 56474a4b08235990916911b8fe758d656c1171faf26Stephen Hines } 565881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 566b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines OutStep = getStepValue(&DL, OutTy, Arg_outstep); 56774a4b08235990916911b8fe758d656c1171faf26Stephen Hines OutStep->setName("outstep"); 568097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes OutBasePtr = Builder.CreateLoad( 569097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_OUT)); 570097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 5719c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines if (gEnableRsTbaa) { 5729c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines OutBasePtr->setMetadata("tbaa", TBAAPointer); 5739c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines } 57474a4b08235990916911b8fe758d656c1171faf26Stephen Hines } 57574a4b08235990916911b8fe758d656c1171faf26Stephen Hines 576881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::SmallVector<llvm::Type*, 8> InTypes; 577881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::SmallVector<llvm::Value*, 8> InSteps; 578881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::SmallVector<llvm::LoadInst*, 8> InBasePtrs; 579326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::SmallVector<bool, 8> InIsStructPointer; 580881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 581e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes if (NumInputs > 0) { 582e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InsMember = Builder.CreateStructGEP(Arg_p, PARAM_FIELD_INS); 583e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InsBasePtr = Builder.CreateLoad(InsMember, "inputs_base"); 5847ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 585e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InStepsMember = 586e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_INESTRIDES); 587e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InStepsBase = Builder.CreateLoad(InStepsMember, 588881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes "insteps_base"); 589881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 590881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes for (size_t InputIndex = 0; InputIndex < NumInputs; 591881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes ++InputIndex, ArgIter++) { 592881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 593881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *IndexVal = Builder.getInt32(InputIndex); 594881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 595881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InStepAddr = Builder.CreateGEP(InStepsBase, IndexVal); 596881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::LoadInst *InStepArg = Builder.CreateLoad(InStepAddr, 597881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes "instep_addr"); 598881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 599326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::Type *InType = ArgIter->getType(); 600326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 601326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes /* 602326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * AArch64 calling dictate that structs of sufficient size get passed by 603326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * pointer instead of passed by value. This, combined with the fact 604326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * that we don't allow kernels to operate on pointer data means that if 605326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * we see a kernel with a pointer parameter we know that it is struct 606326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * input that has been promoted. As such we don't need to convert its 607326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * type to a pointer. Later we will need to know to avoid a load, so we 608326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * save this information in InIsStructPointer. 609326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes */ 610326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes if (!InType->isPointerTy()) { 611326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InType = InType->getPointerTo(); 612326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InIsStructPointer.push_back(false); 613326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } else { 614326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InIsStructPointer.push_back(true); 615326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } 616326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 617881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InStep = getStepValue(&DL, InType, InStepArg); 618881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 619881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InStep->setName("instep"); 620881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 621881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InputAddr = Builder.CreateGEP(InsBasePtr, IndexVal); 622881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::LoadInst *InBasePtr = Builder.CreateLoad(InputAddr, 623881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes "input_base"); 6247ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 625881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (gEnableRsTbaa) { 626881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InBasePtr->setMetadata("tbaa", TBAAPointer); 627881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 628881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 629881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InTypes.push_back(InType); 630881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InSteps.push_back(InStep); 631881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InBasePtrs.push_back(InBasePtr); 632881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 633881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 6347ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 635e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode *IV; 636e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser createLoop(Builder, Arg_x1, Arg_x2, &IV); 6377ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 6387ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines // Populate the actual call to kernel(). 6397ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines llvm::SmallVector<llvm::Value*, 8> RootArgs; 6407ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 6414102bec56151fb5d9c962fb298412f34a6eacaa8Tobias Grosser // Calculate the current input and output pointers 6427b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 6437b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 644881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // We always calculate the input/output pointers with a GEP operating on i8 645881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // values combined with a multiplication and only cast at the very end to 646881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // OutTy. This is to account for dynamic stepping sizes when the value 647881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // isn't apparent at compile time. In the (very common) case when we know 648881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // the step size at compile time, due to haveing complete type information 649881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // this multiplication will optmized out and produces code equivalent to a 650881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // a GEP on a pointer of the correct type. 651881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 652881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // Output 653881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 654881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *OutPtr = NULL; 6557b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser if (OutBasePtr) { 6567b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser llvm::Value *OutOffset = Builder.CreateSub(IV, Arg_x1); 657881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 6587b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser OutOffset = Builder.CreateMul(OutOffset, OutStep); 659881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes OutPtr = Builder.CreateGEP(OutBasePtr, OutOffset); 660881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes OutPtr = Builder.CreatePointerCast(OutPtr, OutTy); 661bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 662e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes if (PassOutByPointer) { 663881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes RootArgs.push_back(OutPtr); 664881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 6654102bec56151fb5d9c962fb298412f34a6eacaa8Tobias Grosser } 6667b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser 667881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // Inputs 66874a4b08235990916911b8fe758d656c1171faf26Stephen Hines 669881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (NumInputs > 0) { 670881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *Offset = Builder.CreateSub(IV, Arg_x1); 671881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 672881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes for (size_t Index = 0; Index < NumInputs; ++Index) { 673881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InOffset = Builder.CreateMul(Offset, InSteps[Index]); 674881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InPtr = Builder.CreateGEP(InBasePtrs[Index], InOffset); 675881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 676881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InPtr = Builder.CreatePointerCast(InPtr, InTypes[Index]); 677881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 678326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::Value *Input; 679326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 680326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes if (InIsStructPointer[Index]) { 681326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes Input = InPtr; 682326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 683326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } else { 684326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::LoadInst *InputLoad = Builder.CreateLoad(InPtr, "input"); 685326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 686326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes if (gEnableRsTbaa) { 687326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InputLoad->setMetadata("tbaa", TBAAAllocation); 688326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } 689881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 690326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes Input = InputLoad; 691881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 692881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 693881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes RootArgs.push_back(Input); 6949c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines } 6957ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 6967ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 697e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *X = IV; 698d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 6997ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(X); 7007ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7017ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 7027ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines if (Y) { 7037ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(Y); 7047ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7057ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 706bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *RetVal = Builder.CreateCall(Function, RootArgs); 7077ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 708e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes if (OutPtr && !PassOutByPointer) { 70918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser llvm::StoreInst *Store = Builder.CreateStore(RetVal, OutPtr); 7109c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines if (gEnableRsTbaa) { 7119c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines Store->setMetadata("tbaa", TBAAAllocation); 7129c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines } 7137ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7147ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 715db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return true; 716db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 717db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 71818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// @brief Checks if pointers to allocation internals are exposed 71918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// 72018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// This function verifies if through the parameters passed to the kernel 72118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// or through calls to the runtime library the script gains access to 72218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// pointers pointing to data within a RenderScript Allocation. 72318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// If we know we control all loads from and stores to data within 72418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// RenderScript allocations and if we know the run-time internal accesses 72518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// are all annotated with RenderScript TBAA metadata, only then we 72618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// can safely use TBAA to distinguish between generic and from-allocation 72718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// pointers. 728bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool allocPointersExposed(llvm::Module &Module) { 72918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // Old style kernel function can expose pointers to elements within 73018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // allocations. 73118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // TODO: Extend analysis to allow simple cases of old-style kernels. 73225eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines for (size_t i = 0; i < mExportForEachCount; ++i) { 73325eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines const char *Name = mExportForEachNameList[i]; 73425eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines uint32_t Signature = mExportForEachSignatureList[i]; 735bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (Module.getFunction(Name) && 736d88177580db4ddedf680854c51db333c97eabc59Stephen Hines !bcinfo::MetadataExtractor::hasForEachSignatureKernel(Signature)) { 73718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return true; 73818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 73918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 74018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 74118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // Check for library functions that expose a pointer to an Allocation or 74218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // that are not yet annotated with RenderScript-specific tbaa information. 74318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser static std::vector<std::string> Funcs; 74418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 74518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAt(...) 74618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsGetElementAt13rs_allocationj"); 74718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsGetElementAt13rs_allocationjj"); 74818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsGetElementAt13rs_allocationjjj"); 74918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsSetElementAt() 75018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsSetElementAt13rs_allocationPvj"); 75118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsSetElementAt13rs_allocationPvjj"); 75218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsSetElementAt13rs_allocationPvjjj"); 75318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAtYuv_uchar_Y() 75418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z25rsGetElementAtYuv_uchar_Y13rs_allocationjj"); 75518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAtYuv_uchar_U() 75618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z25rsGetElementAtYuv_uchar_U13rs_allocationjj"); 75718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAtYuv_uchar_V() 75818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z25rsGetElementAtYuv_uchar_V13rs_allocationjj"); 75918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 76018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser for (std::vector<std::string>::iterator FI = Funcs.begin(), 76118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser FE = Funcs.end(); 76218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser FI != FE; ++FI) { 763bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *Function = Module.getFunction(*FI); 76418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 765bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (!Function) { 76618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser ALOGE("Missing run-time function '%s'", FI->c_str()); 76718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return true; 76818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 76918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 770bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (Function->getNumUses() > 0) { 77118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return true; 77218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 77318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 77418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 77518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return false; 77618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 77718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 77818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// @brief Connect RenderScript TBAA metadata to C/C++ metadata 77918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// 78018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// The TBAA metadata used to annotate loads/stores from RenderScript 781e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// Allocations is generated in a separate TBAA tree with a 782e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// "RenderScript TBAA" root node. LLVM does assume may-alias for all nodes in 783e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// unrelated alias analysis trees. This function makes the RenderScript TBAA 784e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// a subtree of the normal C/C++ TBAA tree aside of normal C/C++ types. With 785e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// the connected trees every access to an Allocation is resolved to 786e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// must-alias if compared to a normal C/C++ access. 787bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes void connectRenderScriptTBAAMetadata(llvm::Module &Module) { 788bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDBuilder MDHelper(*Context); 789bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDNode *TBAARenderScript = 790bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes MDHelper.createTBAARoot("RenderScript TBAA"); 79118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 792bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDNode *TBAARoot = MDHelper.createTBAARoot("Simple C/C++ TBAA"); 793bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDNode *TBAAMergedRS = MDHelper.createTBAANode("RenderScript", 794bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes TBAARoot); 79518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 79618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser TBAARenderScript->replaceAllUsesWith(TBAAMergedRS); 79718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 79818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 799bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes virtual bool runOnModule(llvm::Module &Module) { 800bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool Changed = false; 801bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes this->Module = &Module; 802bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes this->Context = &Module.getContext(); 803bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 804bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes this->buildTypes(); 805bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 806bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bcinfo::MetadataExtractor me(&Module); 80725eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines if (!me.extract()) { 80825eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines ALOGE("Could not extract metadata from module!"); 80925eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines return false; 81025eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines } 81125eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines mExportForEachCount = me.getExportForEachSignatureCount(); 81225eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines mExportForEachNameList = me.getExportForEachNameList(); 81325eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines mExportForEachSignatureList = me.getExportForEachSignatureList(); 814db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 815bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool AllocsExposed = allocPointersExposed(Module); 81618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 81725eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines for (size_t i = 0; i < mExportForEachCount; ++i) { 81825eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines const char *name = mExportForEachNameList[i]; 81925eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines uint32_t signature = mExportForEachSignatureList[i]; 820bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *kernel = Module.getFunction(name); 821cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser if (kernel) { 822d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureKernel(signature)) { 823cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser Changed |= ExpandKernel(kernel, signature); 824acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser kernel->setLinkage(llvm::GlobalValue::InternalLinkage); 825acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser } else if (kernel->getReturnType()->isVoidTy()) { 826cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser Changed |= ExpandFunction(kernel, signature); 827acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser kernel->setLinkage(llvm::GlobalValue::InternalLinkage); 828acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser } else { 829acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser // There are some graphics root functions that are not 830acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser // expanded, but that will be called directly. For those 831acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser // functions, we can not set the linkage to internal. 832acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser } 833cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines } 834db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 835db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8369c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines if (gEnableRsTbaa && !AllocsExposed) { 837bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes connectRenderScriptTBAAMetadata(Module); 83818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 83918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 840cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines return Changed; 841db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 842db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 843db169187dea4602e4ad32058762d23d474753fd0Stephen Hines virtual const char *getPassName() const { 844db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return "ForEach-able Function Expansion"; 845db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 846db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8477a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao}; // end RSForEachExpandPass 848db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8497a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao} // end anonymous namespace 8507a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao 8517a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaochar RSForEachExpandPass::ID = 0; 852db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 853db169187dea4602e4ad32058762d23d474753fd0Stephen Hinesnamespace bcc { 854db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8557a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaollvm::ModulePass * 85625eb586bb055ae07c7e82a2b1bdbd6936641580cStephen HinescreateRSForEachExpandPass(bool pEnableStepOpt){ 85725eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines return new RSForEachExpandPass(pEnableStepOpt); 8587a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao} 859db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8607a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao} // end namespace bcc 861