RSKernelExpand.cpp revision c754d49ee856be620e041348a9f2b3d5610a5a26
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); 106900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes if (SigNode != nullptr && 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 123429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray bool isStepOptSupported(llvm::Type *AllocType) { 124429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 125429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray llvm::PointerType *PT = llvm::dyn_cast<llvm::PointerType>(AllocType); 126429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray llvm::Type *VoidPtrTy = llvm::Type::getInt8PtrTy(*Context); 127429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 128429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (mEnableStepOpt) { 129429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return false; 130429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 131429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 132429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (AllocType == VoidPtrTy) { 133429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return false; 134429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 135429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 136429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (!PT) { 137429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return false; 138429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 139429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 140429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray // remaining conditions are 64-bit only 141429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (VoidPtrTy->getPrimitiveSizeInBits() == 32) { 142429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return true; 143429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 144429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 145429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray // coerce suggests an upconverted struct type, which we can't support 146429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (AllocType->getStructName().find("coerce") != llvm::StringRef::npos) { 147429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return false; 148429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 149429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 150429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray // 2xi64 and i128 suggest an upconverted struct type, which are also unsupported 151429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray llvm::Type *V2xi64Ty = llvm::VectorType::get(llvm::Type::getInt64Ty(*Context), 2); 152429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray llvm::Type *Int128Ty = llvm::Type::getIntNTy(*Context, 128); 153429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (AllocType == V2xi64Ty || AllocType == Int128Ty) { 154429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return false; 155429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 156429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 157429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray return true; 158429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray } 159429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray 1602b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // Get the actual value we should use to step through an allocation. 1617b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 1627b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // Normally the value we use to step through an allocation is given to us by 1637b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // the driver. However, for certain primitive data types, we can derive an 1647b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // integer constant for the step value. We use this integer constant whenever 1657b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // possible to allow further compiler optimizations to take place. 1667b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 167b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines // DL - Target Data size/layout information. 1682b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // T - Type of allocation (should be a pointer). 1692b04086acbef6520ae2c54a868b1271abf053122Stephen Hines // OrigStep - Original step increment (root.expand() input from driver). 170bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *getStepValue(llvm::DataLayout *DL, llvm::Type *AllocType, 1712b04086acbef6520ae2c54a868b1271abf053122Stephen Hines llvm::Value *OrigStep) { 172b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines bccAssert(DL); 173bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(AllocType); 1742b04086acbef6520ae2c54a868b1271abf053122Stephen Hines bccAssert(OrigStep); 175bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::PointerType *PT = llvm::dyn_cast<llvm::PointerType>(AllocType); 176429d94acbc64480d4f75233b66b4824cdc8b19c0Tim Murray if (isStepOptSupported(AllocType)) { 1772b04086acbef6520ae2c54a868b1271abf053122Stephen Hines llvm::Type *ET = PT->getElementType(); 178b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines uint64_t ETSize = DL->getTypeAllocSize(ET); 179bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *Int32Ty = llvm::Type::getInt32Ty(*Context); 1802b04086acbef6520ae2c54a868b1271abf053122Stephen Hines return llvm::ConstantInt::get(Int32Ty, ETSize); 1812b04086acbef6520ae2c54a868b1271abf053122Stephen Hines } else { 1822b04086acbef6520ae2c54a868b1271abf053122Stephen Hines return OrigStep; 1832b04086acbef6520ae2c54a868b1271abf053122Stephen Hines } 1842b04086acbef6520ae2c54a868b1271abf053122Stephen Hines } 1852b04086acbef6520ae2c54a868b1271abf053122Stephen Hines 186e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_INS 0 187e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_INESTRIDES 1 188e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_OUT 2 189e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_Y 3 190e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_Z 4 191e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_LID 5 192e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_USR 6 193e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_DIMX 7 194e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_DIMY 8 195e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_DIMZ 9 196e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes#define PARAM_FIELD_SLOT 10 197097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 198097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes /// Builds the types required by the pass for the given context. 199bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes void buildTypes(void) { 200bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes // Create the RsForEachStubParam struct. 201bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 202097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *VoidPtrTy = llvm::Type::getInt8PtrTy(*Context); 203097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *VoidPtrPtrTy = VoidPtrTy->getPointerTo(); 204097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *Int32Ty = llvm::Type::getInt32Ty(*Context); 205097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::Type *Int32PtrTy = Int32Ty->getPointerTo(); 206097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 207097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes /* Defined in frameworks/base/libs/rs/cpu_ref/rsCpuCore.h: 208db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * 209097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * struct RsForEachKernelStruct{ 210db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * const void *in; 211db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * void *out; 212db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * uint32_t y; 213db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * uint32_t z; 214097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t lid; 215881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * const void **ins; 216e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes * uint32_t *inEStrides; 217097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * const void *usr; 218097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t dimX; 219097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t dimY; 220097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t dimZ; 221097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes * uint32_t slot; 222db169187dea4602e4ad32058762d23d474753fd0Stephen Hines * }; 223db169187dea4602e4ad32058762d23d474753fd0Stephen Hines */ 224097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes llvm::SmallVector<llvm::Type*, 12> StructTypes; 225e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes StructTypes.push_back(VoidPtrPtrTy); // const void **ins 226e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes StructTypes.push_back(Int32PtrTy); // uint32_t *inEStrides 227097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(VoidPtrTy); // void *out 228097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t y 229097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t z 230097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t lid 231097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(VoidPtrTy); // const void *usr 232097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t dimX 233097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t dimY 234097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t dimZ 235097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes StructTypes.push_back(Int32Ty); // uint32_t slot 236881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 237bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ForEachStubType = 238bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::StructType::create(StructTypes, "RsForEachStubParamStruct"); 239bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 240bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes // Create the function type for expanded kernels. 241bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 242bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *ForEachStubPtrTy = ForEachStubType->getPointerTo(); 243bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 244bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::SmallVector<llvm::Type*, 8> ParamTypes; 245bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(ForEachStubPtrTy); // const RsForEachStubParamStruct *p 246bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(Int32Ty); // uint32_t x1 247bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(Int32Ty); // uint32_t x2 248bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ParamTypes.push_back(Int32Ty); // uint32_t outstep 249bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 250e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes ExpandedFunctionType = 251e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::FunctionType::get(llvm::Type::getVoidTy(*Context), ParamTypes, 252e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes false); 2538ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 2548ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 255357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// @brief Create skeleton of the expanded function. 256357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// 257357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// This creates a function with the following signature: 258357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// 259357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// void (const RsForEachStubParamStruct *p, uint32_t x1, uint32_t x2, 2605010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes /// uint32_t outstep) 261357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser /// 262357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser llvm::Function *createEmptyExpandedFunction(llvm::StringRef OldName) { 263bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *ExpandedFunction = 264bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::Create(ExpandedFunctionType, 265bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::GlobalValue::ExternalLinkage, 266bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes OldName + ".expand", Module); 267bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 268bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(ExpandedFunction->arg_size() == NUM_EXPANDED_FUNCTION_PARAMS); 269bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 270bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator AI = ExpandedFunction->arg_begin(); 271bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 272bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("p"); 273bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("x1"); 274bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("x2"); 275bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes (AI++)->setName("arg_outstep"); 276bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 277bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::BasicBlock *Begin = llvm::BasicBlock::Create(*Context, "Begin", 278bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ExpandedFunction); 279806075b3a54af826fea78490fb213d8a0784138eTobias Grosser llvm::IRBuilder<> Builder(Begin); 280806075b3a54af826fea78490fb213d8a0784138eTobias Grosser Builder.CreateRetVoid(); 281806075b3a54af826fea78490fb213d8a0784138eTobias Grosser 282bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes return ExpandedFunction; 283357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser } 284357b58691936bef425bd315c13a2d8019d7e9c7eTobias Grosser 285e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @brief Create an empty loop 286e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 287e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// Create a loop of the form: 288e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 289e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// for (i = LowerBound; i < UpperBound; i++) 290e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// ; 291e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 292e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// After the loop has been created, the builder is set such that 293e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// instructions can be added to the loop body. 294e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// 295e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param Builder The builder to use to build this loop. The current 296e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// position of the builder is the position the loop 297e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// will be inserted. 298e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param LowerBound The first value of the loop iterator 299e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param UpperBound The maximal value of the loop iterator 300e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @param LoopIV A reference that will be set to the loop iterator. 301e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser /// @return The BasicBlock that will be executed after the loop. 302e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::BasicBlock *createLoop(llvm::IRBuilder<> &Builder, 303e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *LowerBound, 304e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *UpperBound, 305e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode **LoopIV) { 306e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser assert(LowerBound->getType() == UpperBound->getType()); 307e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 308e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::BasicBlock *CondBB, *AfterBB, *HeaderBB; 309e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *Cond, *IVNext; 310e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode *IV; 311e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 312e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser CondBB = Builder.GetInsertBlock(); 313e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser AfterBB = llvm::SplitBlock(CondBB, Builder.GetInsertPoint(), this); 314bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes HeaderBB = llvm::BasicBlock::Create(*Context, "Loop", CondBB->getParent()); 315e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 316e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // if (LowerBound < Upperbound) 317e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto LoopHeader 318e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // else 319e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto AfterBB 320e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser CondBB->getTerminator()->eraseFromParent(); 321e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.SetInsertPoint(CondBB); 322e87a0518647d1f9c5249d6990c67737e0fb579e9Tobias Grosser Cond = Builder.CreateICmpULT(LowerBound, UpperBound); 323e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.CreateCondBr(Cond, HeaderBB, AfterBB); 324e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 325e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // iv = PHI [CondBB -> LowerBound], [LoopHeader -> NextIV ] 326e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // iv.next = iv + 1 327e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // if (iv.next < Upperbound) 328e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto LoopHeader 329e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // else 330e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser // goto AfterBB 331e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.SetInsertPoint(HeaderBB); 332e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IV = Builder.CreatePHI(LowerBound->getType(), 2, "X"); 333e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IV->addIncoming(LowerBound, CondBB); 334e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IVNext = Builder.CreateNUWAdd(IV, Builder.getInt32(1)); 335e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser IV->addIncoming(IVNext, HeaderBB); 336e87a0518647d1f9c5249d6990c67737e0fb579e9Tobias Grosser Cond = Builder.CreateICmpULT(IVNext, UpperBound); 337e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.CreateCondBr(Cond, HeaderBB, AfterBB); 338e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser AfterBB->setName("Exit"); 339e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser Builder.SetInsertPoint(HeaderBB->getFirstNonPHI()); 340e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser *LoopIV = IV; 341e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser return AfterBB; 342e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser } 343e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser 3448ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosserpublic: 34525eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines RSForEachExpandPass(bool pEnableStepOpt) 346900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes : ModulePass(ID), Module(nullptr), Context(nullptr), 347bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes mEnableStepOpt(pEnableStepOpt) { 348bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 3498ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 3508ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 351c754d49ee856be620e041348a9f2b3d5610a5a26Stephen Hines virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override { 352c754d49ee856be620e041348a9f2b3d5610a5a26Stephen Hines // This pass does not use any other analysis passes, but it does 353c754d49ee856be620e041348a9f2b3d5610a5a26Stephen Hines // add/wrap the existing functions in the module (thus altering the CFG). 354c754d49ee856be620e041348a9f2b3d5610a5a26Stephen Hines } 355c754d49ee856be620e041348a9f2b3d5610a5a26Stephen Hines 3568ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser /* Performs the actual optimization on a selected function. On success, the 3578ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser * Module will contain a new function of the name "<NAME>.expand" that 3588ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser * invokes <NAME>() in a loop with the appropriate parameters. 3598ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser */ 360bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool ExpandFunction(llvm::Function *Function, uint32_t Signature) { 361bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ALOGV("Expanding ForEach-able Function %s", 362bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Function->getName().str().c_str()); 3638ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 3648ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser if (!Signature) { 365bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Signature = getRootSignature(Function); 3668ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser if (!Signature) { 3678ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser // We couldn't determine how to expand this function based on its 3688ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser // function signature. 3698ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser return false; 3708ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 3718ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser } 3728ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 373bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::DataLayout DL(Module); 3748ae4607d2dc5bc655d0c9225565d36ce2ebfc798Tobias Grosser 375bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *ExpandedFunction = 376bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes createEmptyExpandedFunction(Function->getName()); 377db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 378bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(ExpandedFunction->arg_size() == NUM_EXPANDED_FUNCTION_PARAMS); 379db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 380bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes /* 381bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * Extract the expanded function's parameters. It is guaranteed by 382bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * createEmptyExpandedFunction that there will be five parameters. 383bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes */ 384bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator ExpandedFunctionArgIter = 385bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ExpandedFunction->arg_begin(); 386db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 387bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_p = &*(ExpandedFunctionArgIter++); 388bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x1 = &*(ExpandedFunctionArgIter++); 389bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x2 = &*(ExpandedFunctionArgIter++); 3905010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes llvm::Value *Arg_outstep = &*(ExpandedFunctionArgIter); 391bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 392900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *InStep = nullptr; 393900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *OutStep = nullptr; 394db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 395db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // Construct the actual function body. 396bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::IRBuilder<> Builder(ExpandedFunction->getEntryBlock().begin()); 397db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 398cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines // Collect and construct the arguments for the kernel(). 399db169187dea4602e4ad32058762d23d474753fd0Stephen Hines // Note that we load any loop-invariant arguments before entering the Loop. 400bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator FunctionArgIter = Function->arg_begin(); 401db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 402900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Type *InTy = nullptr; 403900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *InBasePtr = nullptr; 404d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureIn(Signature)) { 405e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InsMember = Builder.CreateStructGEP(Arg_p, 406e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes PARAM_FIELD_INS); 407e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InsBasePtr = Builder.CreateLoad(InsMember, "inputs_base"); 408e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 409e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InStepsMember = 410e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_INESTRIDES); 411e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InStepsBase = Builder.CreateLoad(InStepsMember, 412e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes "insteps_base"); 413e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 414e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *IndexVal = Builder.getInt32(0); 415e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 416e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InStepAddr = Builder.CreateGEP(InStepsBase, IndexVal); 417e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InStepArg = Builder.CreateLoad(InStepAddr, 418e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes "instep_addr"); 419e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 420bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes InTy = (FunctionArgIter++)->getType(); 421e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes InStep = getStepValue(&DL, InTy, InStepArg); 422e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 4232b04086acbef6520ae2c54a868b1271abf053122Stephen Hines InStep->setName("instep"); 424e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes 425e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InputAddr = Builder.CreateGEP(InsBasePtr, IndexVal); 426e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes InBasePtr = Builder.CreateLoad(InputAddr, "input_base"); 427db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 428db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 429900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Type *OutTy = nullptr; 430900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *OutBasePtr = nullptr; 431d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureOut(Signature)) { 432bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes OutTy = (FunctionArgIter++)->getType(); 433b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines OutStep = getStepValue(&DL, OutTy, Arg_outstep); 4342b04086acbef6520ae2c54a868b1271abf053122Stephen Hines OutStep->setName("outstep"); 435097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes OutBasePtr = Builder.CreateLoad( 436097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_OUT)); 437db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 438db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 439900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *UsrData = nullptr; 440d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureUsrData(Signature)) { 441bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *UsrDataTy = (FunctionArgIter++)->getType(); 442db169187dea4602e4ad32058762d23d474753fd0Stephen Hines UsrData = Builder.CreatePointerCast(Builder.CreateLoad( 443097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_USR)), UsrDataTy); 444db169187dea4602e4ad32058762d23d474753fd0Stephen Hines UsrData->setName("UsrData"); 445db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 446db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 447d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 448bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes FunctionArgIter++; 449db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 450db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 451900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *Y = nullptr; 452d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureY(Signature)) { 453097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Y = Builder.CreateLoad( 454097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_Y), "Y"); 455097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 456bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes FunctionArgIter++; 457db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 458db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 459bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bccAssert(FunctionArgIter == Function->arg_end()); 460db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 461e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode *IV; 462e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser createLoop(Builder, Arg_x1, Arg_x2, &IV); 463db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 464cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines // Populate the actual call to kernel(). 465db169187dea4602e4ad32058762d23d474753fd0Stephen Hines llvm::SmallVector<llvm::Value*, 8> RootArgs; 466db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 467900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *InPtr = nullptr; 468900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *OutPtr = nullptr; 469db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 470ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser // Calculate the current input and output pointers 47102f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // 472ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser // We always calculate the input/output pointers with a GEP operating on i8 47302f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // values and only cast at the very end to OutTy. This is because the step 47402f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // between two values is given in bytes. 47502f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // 47602f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // TODO: We could further optimize the output by using a GEP operation of 47702f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser // type 'OutTy' in cases where the element type of the allocation allows. 47802f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser if (OutBasePtr) { 47902f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser llvm::Value *OutOffset = Builder.CreateSub(IV, Arg_x1); 48002f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser OutOffset = Builder.CreateMul(OutOffset, OutStep); 48102f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser OutPtr = Builder.CreateGEP(OutBasePtr, OutOffset); 48202f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser OutPtr = Builder.CreatePointerCast(OutPtr, OutTy); 48302f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser } 484bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 485ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser if (InBasePtr) { 486ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser llvm::Value *InOffset = Builder.CreateSub(IV, Arg_x1); 487ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser InOffset = Builder.CreateMul(InOffset, InStep); 488ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser InPtr = Builder.CreateGEP(InBasePtr, InOffset); 489ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser InPtr = Builder.CreatePointerCast(InPtr, InTy); 490ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser } 49102f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser 492ae937ec9658c219a38d9d631d2569f19e21b50c0Tobias Grosser if (InPtr) { 4937ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(InPtr); 494db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 495db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 49602f3cd69a4103f91a51a2f988f2179c885d734b5Tobias Grosser if (OutPtr) { 4977ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(OutPtr); 498db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 499db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 500db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (UsrData) { 501db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgs.push_back(UsrData); 502db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 503db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 504e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *X = IV; 505d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 506db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgs.push_back(X); 507db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 508db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 509db169187dea4602e4ad32058762d23d474753fd0Stephen Hines if (Y) { 510db169187dea4602e4ad32058762d23d474753fd0Stephen Hines RootArgs.push_back(Y); 511db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 512db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 513bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes Builder.CreateCall(Function, RootArgs); 514db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 5157ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines return true; 5167ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 5177ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 5187ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines /* Expand a pass-by-value kernel. 5197ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines */ 520bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool ExpandKernel(llvm::Function *Function, uint32_t Signature) { 521d88177580db4ddedf680854c51db333c97eabc59Stephen Hines bccAssert(bcinfo::MetadataExtractor::hasForEachSignatureKernel(Signature)); 522bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ALOGV("Expanding kernel Function %s", Function->getName().str().c_str()); 5237ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 5247ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines // TODO: Refactor this to share functionality with ExpandFunction. 525bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::DataLayout DL(Module); 5267ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 527bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *ExpandedFunction = 528bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes createEmptyExpandedFunction(Function->getName()); 5297ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 530bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes /* 531bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * Extract the expanded function's parameters. It is guaranteed by 532bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes * createEmptyExpandedFunction that there will be five parameters. 533bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes */ 534881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 535881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes bccAssert(ExpandedFunction->arg_size() == NUM_EXPANDED_FUNCTION_PARAMS); 536881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 537bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function::arg_iterator ExpandedFunctionArgIter = 538bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes ExpandedFunction->arg_begin(); 539bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 540bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_p = &*(ExpandedFunctionArgIter++); 541bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x1 = &*(ExpandedFunctionArgIter++); 542bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *Arg_x2 = &*(ExpandedFunctionArgIter++); 5435010f641d1df6bc3447646ca7ef837410fb9b3dcChris Wailes llvm::Value *Arg_outstep = &*(ExpandedFunctionArgIter); 5447ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 5457ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines // Construct the actual function body. 546bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::IRBuilder<> Builder(ExpandedFunction->getEntryBlock().begin()); 5477ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 54818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // Create TBAA meta-data. 54918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser llvm::MDNode *TBAARenderScript, *TBAAAllocation, *TBAAPointer; 550bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDBuilder MDHelper(*Context); 55114588cf0babf4596f1bcf4ea05ddd2ceb458a916Logan Chien 55218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser TBAARenderScript = MDHelper.createTBAARoot("RenderScript TBAA"); 553e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAAllocation = MDHelper.createTBAAScalarTypeNode("allocation", 554e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAARenderScript); 555e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAAllocation = MDHelper.createTBAAStructTagNode(TBAAAllocation, 556e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAAllocation, 0); 557e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAAPointer = MDHelper.createTBAAScalarTypeNode("pointer", 558e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes TBAARenderScript); 55914588cf0babf4596f1bcf4ea05ddd2ceb458a916Logan Chien TBAAPointer = MDHelper.createTBAAStructTagNode(TBAAPointer, TBAAPointer, 0); 56018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 56150f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray llvm::MDNode *AliasingDomain, *AliasingScope; 56250f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray AliasingDomain = MDHelper.createAnonymousAliasScopeDomain("RS argument scope domain"); 56350f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray AliasingScope = MDHelper.createAnonymousAliasScope(AliasingDomain, "RS argument scope"); 56450f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray 565881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes /* 566881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * Collect and construct the arguments for the kernel(). 567881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * 568881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes * Note that we load any loop-invariant arguments before entering the Loop. 569881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes */ 570881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes size_t NumInputs = Function->arg_size(); 5717ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 572900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *Y = nullptr; 573881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (bcinfo::MetadataExtractor::hasForEachSignatureY(Signature)) { 574097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Y = Builder.CreateLoad( 575097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_Y), "Y"); 576097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 577881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes --NumInputs; 578881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 579881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 580881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 581881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes --NumInputs; 582881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 583881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 584881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // No usrData parameter on kernels. 585881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes bccAssert( 586881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes !bcinfo::MetadataExtractor::hasForEachSignatureUsrData(Signature)); 587881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 588881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Function::arg_iterator ArgIter = Function->arg_begin(); 589881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 590881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // Check the return type 591bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::Type *OutTy = nullptr; 592bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::Value *OutStep = nullptr; 593bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::LoadInst *OutBasePtr = nullptr; 594bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::Value *CastedOutBasePtr = nullptr; 595881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 596e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes bool PassOutByPointer = false; 597881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 598d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureOut(Signature)) { 599bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Type *OutBaseTy = Function->getReturnType(); 600881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 60174a4b08235990916911b8fe758d656c1171faf26Stephen Hines if (OutBaseTy->isVoidTy()) { 602e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes PassOutByPointer = true; 603881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes OutTy = ArgIter->getType(); 604881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 605881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes ArgIter++; 606881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes --NumInputs; 60774a4b08235990916911b8fe758d656c1171faf26Stephen Hines } else { 60874a4b08235990916911b8fe758d656c1171faf26Stephen Hines // We don't increment Args, since we are using the actual return type. 609881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes OutTy = OutBaseTy->getPointerTo(); 61074a4b08235990916911b8fe758d656c1171faf26Stephen Hines } 611881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 612b730e239619a546d93e5926ea92d698ab77ec7f6Stephen Hines OutStep = getStepValue(&DL, OutTy, Arg_outstep); 61374a4b08235990916911b8fe758d656c1171faf26Stephen Hines OutStep->setName("outstep"); 614097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes OutBasePtr = Builder.CreateLoad( 615097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_OUT)); 616097ca14d8b6908d0e5b7f8f38011cad4fb94bc26Chris Wailes 6179c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines if (gEnableRsTbaa) { 6189c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines OutBasePtr->setMetadata("tbaa", TBAAPointer); 6199c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines } 62050f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray 62150f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray OutBasePtr->setMetadata("alias.scope", AliasingScope); 62250f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray 623bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray CastedOutBasePtr = Builder.CreatePointerCast(OutBasePtr, OutTy, "casted_out"); 62474a4b08235990916911b8fe758d656c1171faf26Stephen Hines } 62574a4b08235990916911b8fe758d656c1171faf26Stephen Hines 626bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::SmallVector<llvm::Type*, 8> InTypes; 627bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::SmallVector<llvm::Value*, 8> InSteps; 628bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::SmallVector<llvm::Value*, 8> InBasePtrs; 629bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::SmallVector<bool, 8> InIsStructPointer; 630881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 631e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes if (NumInputs > 0) { 632e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InsMember = Builder.CreateStructGEP(Arg_p, PARAM_FIELD_INS); 633e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InsBasePtr = Builder.CreateLoad(InsMember, "inputs_base"); 6347ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 635e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::Value *InStepsMember = 636e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes Builder.CreateStructGEP(Arg_p, PARAM_FIELD_INESTRIDES); 637e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes llvm::LoadInst *InStepsBase = Builder.CreateLoad(InStepsMember, 638881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes "insteps_base"); 639881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 640881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes for (size_t InputIndex = 0; InputIndex < NumInputs; 641881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes ++InputIndex, ArgIter++) { 642881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 643881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *IndexVal = Builder.getInt32(InputIndex); 644881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 645881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InStepAddr = Builder.CreateGEP(InStepsBase, IndexVal); 646881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::LoadInst *InStepArg = Builder.CreateLoad(InStepAddr, 647881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes "instep_addr"); 648881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 649326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::Type *InType = ArgIter->getType(); 650326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 651326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes /* 652326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * AArch64 calling dictate that structs of sufficient size get passed by 653326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * pointer instead of passed by value. This, combined with the fact 654326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * that we don't allow kernels to operate on pointer data means that if 655326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * we see a kernel with a pointer parameter we know that it is struct 656326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * input that has been promoted. As such we don't need to convert its 657326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * type to a pointer. Later we will need to know to avoid a load, so we 658326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes * save this information in InIsStructPointer. 659326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes */ 660326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes if (!InType->isPointerTy()) { 661326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InType = InType->getPointerTo(); 662326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InIsStructPointer.push_back(false); 663326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } else { 664326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InIsStructPointer.push_back(true); 665326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } 666326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 667881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InStep = getStepValue(&DL, InType, InStepArg); 668881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 669881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InStep->setName("instep"); 670881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 671881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *InputAddr = Builder.CreateGEP(InsBasePtr, IndexVal); 672881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::LoadInst *InBasePtr = Builder.CreateLoad(InputAddr, 673881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes "input_base"); 674bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::Value *CastInBasePtr = Builder.CreatePointerCast(InBasePtr, 675bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray InType, "casted_in"); 676881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (gEnableRsTbaa) { 677881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InBasePtr->setMetadata("tbaa", TBAAPointer); 678881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 679881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 68050f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray InBasePtr->setMetadata("alias.scope", AliasingScope); 68150f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray 682881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InTypes.push_back(InType); 683881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes InSteps.push_back(InStep); 684bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray InBasePtrs.push_back(CastInBasePtr); 685881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 686881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 6877ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 688e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::PHINode *IV; 689e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser createLoop(Builder, Arg_x1, Arg_x2, &IV); 6907ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 6917ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines // Populate the actual call to kernel(). 6927ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines llvm::SmallVector<llvm::Value*, 8> RootArgs; 6937ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 6944102bec56151fb5d9c962fb298412f34a6eacaa8Tobias Grosser // Calculate the current input and output pointers 6957b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 6967b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser // 697881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // We always calculate the input/output pointers with a GEP operating on i8 698881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // values combined with a multiplication and only cast at the very end to 699881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // OutTy. This is to account for dynamic stepping sizes when the value 700881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // isn't apparent at compile time. In the (very common) case when we know 701881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // the step size at compile time, due to haveing complete type information 702881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // this multiplication will optmized out and produces code equivalent to a 703881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // a GEP on a pointer of the correct type. 704881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 705881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // Output 706881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 707900c6c1f08f7c572125d7d39abe0f0f9eafbfa14Chris Wailes llvm::Value *OutPtr = nullptr; 708bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray if (CastedOutBasePtr) { 7097b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser llvm::Value *OutOffset = Builder.CreateSub(IV, Arg_x1); 710881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 711bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray OutPtr = Builder.CreateGEP(CastedOutBasePtr, OutOffset); 712bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 713e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes if (PassOutByPointer) { 714881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes RootArgs.push_back(OutPtr); 715881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 7164102bec56151fb5d9c962fb298412f34a6eacaa8Tobias Grosser } 7177b6629024395bf085ca64fcd5c69d2ded95e8d18Tobias Grosser 718881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes // Inputs 71974a4b08235990916911b8fe758d656c1171faf26Stephen Hines 720881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes if (NumInputs > 0) { 721881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes llvm::Value *Offset = Builder.CreateSub(IV, Arg_x1); 722881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 723881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes for (size_t Index = 0; Index < NumInputs; ++Index) { 724bb73b74a9f6ad26c2ab30557bfe6916a44ed75f6Tim Murray llvm::Value *InPtr = Builder.CreateGEP(InBasePtrs[Index], Offset); 725326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::Value *Input; 726326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 727326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes if (InIsStructPointer[Index]) { 728326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes Input = InPtr; 729326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 730326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } else { 731326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes llvm::LoadInst *InputLoad = Builder.CreateLoad(InPtr, "input"); 732326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes 733326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes if (gEnableRsTbaa) { 734326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes InputLoad->setMetadata("tbaa", TBAAAllocation); 735326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes } 736881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 73750f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray InputLoad->setMetadata("alias.scope", AliasingScope); 73850f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray 739326d02a9f3cfe30caa21e5c2aecbd4c85112b363Chris Wailes Input = InputLoad; 740881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes } 741881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes 742881cda4f5b793a1e7f7d33cf4a31efc3fdbba4fdChris Wailes RootArgs.push_back(Input); 7439c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines } 7447ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7457ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 746e4a73f68e1b338881adf682c458e0b4b92ecd91eTobias Grosser llvm::Value *X = IV; 747d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureX(Signature)) { 7487ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(X); 7497ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7507ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 7517ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines if (Y) { 7527ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines RootArgs.push_back(Y); 7537ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7547ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 755bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Value *RetVal = Builder.CreateCall(Function, RootArgs); 7567ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 757e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes if (OutPtr && !PassOutByPointer) { 75818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser llvm::StoreInst *Store = Builder.CreateStore(RetVal, OutPtr); 7599c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines if (gEnableRsTbaa) { 7609c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines Store->setMetadata("tbaa", TBAAAllocation); 7619c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines } 76250f5eb4b27ce6dd2a02cf389ac2acfa95c6939f1Tim Murray Store->setMetadata("alias.scope", AliasingScope); 7637ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines } 7647ae3a828fade4e30f7940415949f33ac1f15dc77Stephen Hines 765db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return true; 766db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 767db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 76818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// @brief Checks if pointers to allocation internals are exposed 76918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// 77018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// This function verifies if through the parameters passed to the kernel 77118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// or through calls to the runtime library the script gains access to 77218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// pointers pointing to data within a RenderScript Allocation. 77318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// If we know we control all loads from and stores to data within 77418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// RenderScript allocations and if we know the run-time internal accesses 77518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// are all annotated with RenderScript TBAA metadata, only then we 77618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// can safely use TBAA to distinguish between generic and from-allocation 77718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// pointers. 778bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool allocPointersExposed(llvm::Module &Module) { 77918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // Old style kernel function can expose pointers to elements within 78018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // allocations. 78118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // TODO: Extend analysis to allow simple cases of old-style kernels. 78225eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines for (size_t i = 0; i < mExportForEachCount; ++i) { 78325eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines const char *Name = mExportForEachNameList[i]; 78425eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines uint32_t Signature = mExportForEachSignatureList[i]; 785bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (Module.getFunction(Name) && 786d88177580db4ddedf680854c51db333c97eabc59Stephen Hines !bcinfo::MetadataExtractor::hasForEachSignatureKernel(Signature)) { 78718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return true; 78818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 78918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 79018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 79118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // Check for library functions that expose a pointer to an Allocation or 79218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // that are not yet annotated with RenderScript-specific tbaa information. 79318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser static std::vector<std::string> Funcs; 79418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 79518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAt(...) 79618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsGetElementAt13rs_allocationj"); 79718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsGetElementAt13rs_allocationjj"); 79818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsGetElementAt13rs_allocationjjj"); 79918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsSetElementAt() 80018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsSetElementAt13rs_allocationPvj"); 80118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsSetElementAt13rs_allocationPvjj"); 80218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z14rsSetElementAt13rs_allocationPvjjj"); 80318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAtYuv_uchar_Y() 80418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z25rsGetElementAtYuv_uchar_Y13rs_allocationjj"); 80518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAtYuv_uchar_U() 80618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z25rsGetElementAtYuv_uchar_U13rs_allocationjj"); 80718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser // rsGetElementAtYuv_uchar_V() 80818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser Funcs.push_back("_Z25rsGetElementAtYuv_uchar_V13rs_allocationjj"); 80918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 81018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser for (std::vector<std::string>::iterator FI = Funcs.begin(), 81118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser FE = Funcs.end(); 81218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser FI != FE; ++FI) { 813bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *Function = Module.getFunction(*FI); 81418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 815bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (!Function) { 81618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser ALOGE("Missing run-time function '%s'", FI->c_str()); 81718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return true; 81818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 81918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 820bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes if (Function->getNumUses() > 0) { 82118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return true; 82218a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 82318a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 82418a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 82518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser return false; 82618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 82718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 82818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// @brief Connect RenderScript TBAA metadata to C/C++ metadata 82918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// 83018a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser /// The TBAA metadata used to annotate loads/stores from RenderScript 831e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// Allocations is generated in a separate TBAA tree with a 832e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// "RenderScript TBAA" root node. LLVM does assume may-alias for all nodes in 833e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// unrelated alias analysis trees. This function makes the RenderScript TBAA 834e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// a subtree of the normal C/C++ TBAA tree aside of normal C/C++ types. With 835e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// the connected trees every access to an Allocation is resolved to 836e10b8641813c701159c6615faaa58dd1a9b31ce5Chris Wailes /// must-alias if compared to a normal C/C++ access. 837bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes void connectRenderScriptTBAAMetadata(llvm::Module &Module) { 838bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDBuilder MDHelper(*Context); 839bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDNode *TBAARenderScript = 840bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes MDHelper.createTBAARoot("RenderScript TBAA"); 84118a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 842bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDNode *TBAARoot = MDHelper.createTBAARoot("Simple C/C++ TBAA"); 843bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::MDNode *TBAAMergedRS = MDHelper.createTBAANode("RenderScript", 844bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes TBAARoot); 84518a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 84618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser TBAARenderScript->replaceAllUsesWith(TBAAMergedRS); 84718a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 84818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 849bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes virtual bool runOnModule(llvm::Module &Module) { 850bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool Changed = false; 851bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes this->Module = &Module; 852bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes this->Context = &Module.getContext(); 853bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 854bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes this->buildTypes(); 855bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes 856bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bcinfo::MetadataExtractor me(&Module); 85725eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines if (!me.extract()) { 85825eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines ALOGE("Could not extract metadata from module!"); 85925eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines return false; 86025eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines } 86125eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines mExportForEachCount = me.getExportForEachSignatureCount(); 86225eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines mExportForEachNameList = me.getExportForEachNameList(); 86325eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines mExportForEachSignatureList = me.getExportForEachSignatureList(); 864db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 865bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes bool AllocsExposed = allocPointersExposed(Module); 86618a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 86725eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines for (size_t i = 0; i < mExportForEachCount; ++i) { 86825eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines const char *name = mExportForEachNameList[i]; 86925eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines uint32_t signature = mExportForEachSignatureList[i]; 870bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes llvm::Function *kernel = Module.getFunction(name); 871cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser if (kernel) { 872d88177580db4ddedf680854c51db333c97eabc59Stephen Hines if (bcinfo::MetadataExtractor::hasForEachSignatureKernel(signature)) { 873cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser Changed |= ExpandKernel(kernel, signature); 874acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser kernel->setLinkage(llvm::GlobalValue::InternalLinkage); 875acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser } else if (kernel->getReturnType()->isVoidTy()) { 876cd5b657c39a348bd7652a19c5be5035e9df44a42Tobias Grosser Changed |= ExpandFunction(kernel, signature); 877acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser kernel->setLinkage(llvm::GlobalValue::InternalLinkage); 878acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser } else { 879acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser // There are some graphics root functions that are not 880acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser // expanded, but that will be called directly. For those 881acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser // functions, we can not set the linkage to internal. 882acde6013e9c448547e59eed04afd2adbd9681a3aTobias Grosser } 883cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines } 884db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 885db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8869c5263e00d89dfdd25d3a1706eb319e8529ec604Stephen Hines if (gEnableRsTbaa && !AllocsExposed) { 887bdbff6e600b0d834e4770f65c7d2df93d7ef305cChris Wailes connectRenderScriptTBAAMetadata(Module); 88818a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser } 88918a38a3fc6fad8355891b771dd3c6537fa8699ecTobias Grosser 890cc366e573e31f43a6101fd6e04b90c6afdc3b7a7Stephen Hines return Changed; 891db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 892db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 893db169187dea4602e4ad32058762d23d474753fd0Stephen Hines virtual const char *getPassName() const { 894db169187dea4602e4ad32058762d23d474753fd0Stephen Hines return "ForEach-able Function Expansion"; 895db169187dea4602e4ad32058762d23d474753fd0Stephen Hines } 896db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8977a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao}; // end RSForEachExpandPass 898db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 8997a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao} // end anonymous namespace 9007a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao 9017a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaochar RSForEachExpandPass::ID = 0; 902db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 903db169187dea4602e4ad32058762d23d474753fd0Stephen Hinesnamespace bcc { 904db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 9057a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liaollvm::ModulePass * 90625eb586bb055ae07c7e82a2b1bdbd6936641580cStephen HinescreateRSForEachExpandPass(bool pEnableStepOpt){ 90725eb586bb055ae07c7e82a2b1bdbd6936641580cStephen Hines return new RSForEachExpandPass(pEnableStepOpt); 9087a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao} 909db169187dea4602e4ad32058762d23d474753fd0Stephen Hines 9107a66e6cbb1ae32cd56b19822c4e66560deb857dbShih-wei Liao} // end namespace bcc 911