Stephen Hines | fb81ec1 | 2015-05-18 20:04:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef BCC_RS_UTILS_H |
| 18 | #define BCC_RS_UTILS_H |
| 19 | |
| 20 | #include "rsDefines.h" |
| 21 | |
| 22 | #include <llvm/IR/Type.h> |
David Gross | 23c2bfe | 2015-06-22 14:19:00 -0700 | [diff] [blame] | 23 | #include <llvm/IR/DerivedTypes.h> |
David Gross | 57fd9f8 | 2016-04-08 12:35:41 -0700 | [diff] [blame] | 24 | #include <llvm/ADT/StringRef.h> |
| 25 | |
| 26 | #include <string> |
Stephen Hines | fb81ec1 | 2015-05-18 20:04:23 -0700 | [diff] [blame] | 27 | |
| 28 | namespace { |
| 29 | |
David Gross | 23c2bfe | 2015-06-22 14:19:00 -0700 | [diff] [blame] | 30 | static inline llvm::StringRef getUnsuffixedStructName(const llvm::StructType *T) { |
Colin Cross | 1d3ac56 | 2016-12-07 14:21:42 -0800 | [diff] [blame] | 31 | #ifdef _DEBUG |
Stephen Hines | c31e101 | 2015-08-25 23:10:18 -0700 | [diff] [blame] | 32 | // Bug: 22926131 |
| 33 | // When building with assertions enabled, LLVM cannot read the name of a |
| 34 | // literal (anonymous) structure, because they shouldn't actually ever have |
| 35 | // a name. Unfortunately, due to past definitions of RenderScript object |
| 36 | // types as anonymous structures typedef-ed to their proper typename, |
| 37 | // we had been relying on accessing this information. LLVM bitcode retains |
| 38 | // the typedef-ed name for such anonymous structures. There is a |
| 39 | // corresponding (safe) fix to the RenderScript headers to actually name |
| 40 | // these types the same as their typedef name to simplify things. That |
| 41 | // fixes this issue going forward, but it won't allow us to compile legacy |
| 42 | // code properly. In that case, we just have non-assert builds ignore the |
| 43 | // fact that anonymous structures shouldn't have their name read, and do it |
| 44 | // anyway. Note that RSCompilerDriver.cpp checks the compiler version |
| 45 | // number (from llvm-rs-cc) to ensure that we are only ever building modern |
| 46 | // code when we have assertions enabled. Legacy code can only be compiled |
| 47 | // correctly with a non-asserting compiler. |
| 48 | // |
| 49 | // Note that the whole reason for looking at the "unsuffixed" name of the |
| 50 | // type is because LLVM suffixes duplicate typedefs of the same anonymous |
| 51 | // structure. In the new case, where all of the RS object types have a |
| 52 | // proper name, they won't have a dotted suffix at all. We still need |
| 53 | // to look at the old unsuffixed version to handle legacy code properly. |
| 54 | if (T->isLiteral()) { |
| 55 | return ""; |
| 56 | } |
| 57 | #endif |
| 58 | |
David Gross | 23c2bfe | 2015-06-22 14:19:00 -0700 | [diff] [blame] | 59 | // Get just the object type name with no suffix. |
| 60 | size_t LastDot = T->getName().rfind('.'); |
| 61 | if (LastDot == strlen("struct")) { |
| 62 | // If we get back to just the "struct" part, we know that we had a |
| 63 | // raw typename (i.e. struct.rs_element with no ".[0-9]+" suffix on it. |
| 64 | // In that case, we will want to create our slice such that it contains |
| 65 | // the entire name. |
| 66 | LastDot = T->getName().size(); |
| 67 | } |
| 68 | return T->getStructName().slice(0, LastDot); |
| 69 | } |
| 70 | |
Stephen Hines | fb81ec1 | 2015-05-18 20:04:23 -0700 | [diff] [blame] | 71 | const char kAllocationTypeName[] = "struct.rs_allocation"; |
| 72 | const char kElementTypeName[] = "struct.rs_element"; |
| 73 | const char kSamplerTypeName[] = "struct.rs_sampler"; |
| 74 | const char kScriptTypeName[] = "struct.rs_script"; |
| 75 | const char kTypeTypeName[] = "struct.rs_type"; |
| 76 | |
| 77 | // Returns the RsDataType for a given input LLVM type. |
| 78 | // This is only used to distinguish the associated RS object types (i.e. |
| 79 | // rs_allocation, rs_element, rs_sampler, rs_script, and rs_type). |
| 80 | // All other types are reported back as RS_TYPE_NONE, since no special |
| 81 | // handling would be necessary. |
| 82 | static inline enum RsDataType getRsDataTypeForType(const llvm::Type *T) { |
| 83 | if (T->isStructTy()) { |
David Gross | 23c2bfe | 2015-06-22 14:19:00 -0700 | [diff] [blame] | 84 | const llvm::StringRef StructName = getUnsuffixedStructName(llvm::dyn_cast<const llvm::StructType>(T)); |
Stephen Hines | fb81ec1 | 2015-05-18 20:04:23 -0700 | [diff] [blame] | 85 | if (StructName.equals(kAllocationTypeName)) { |
| 86 | return RS_TYPE_ALLOCATION; |
| 87 | } else if (StructName.equals(kElementTypeName)) { |
| 88 | return RS_TYPE_ELEMENT; |
| 89 | } else if (StructName.equals(kSamplerTypeName)) { |
| 90 | return RS_TYPE_SAMPLER; |
| 91 | } else if (StructName.equals(kScriptTypeName)) { |
| 92 | return RS_TYPE_SCRIPT; |
| 93 | } else if (StructName.equals(kTypeTypeName)) { |
| 94 | return RS_TYPE_TYPE; |
| 95 | } |
| 96 | } |
| 97 | return RS_TYPE_NONE; |
| 98 | } |
| 99 | |
Stephen Hines | abfa785 | 2015-05-22 19:43:10 -0700 | [diff] [blame] | 100 | // Returns true if the input type is one of our RenderScript object types |
| 101 | // (allocation, element, sampler, script, type) and false if it is not. |
| 102 | static inline bool isRsObjectType(const llvm::Type *T) { |
| 103 | return getRsDataTypeForType(T) != RS_TYPE_NONE; |
| 104 | } |
| 105 | |
Stephen Hines | fb81ec1 | 2015-05-18 20:04:23 -0700 | [diff] [blame] | 106 | } // end namespace |
| 107 | |
David Gross | 57fd9f8 | 2016-04-08 12:35:41 -0700 | [diff] [blame] | 108 | // When we have a general reduction kernel with no combiner function, |
| 109 | // we will synthesize a combiner function from the accumulator |
| 110 | // function. Given the accumulator function name, what should be the |
| 111 | // name of the combiner function? |
David Gross | a48ea36 | 2016-06-02 14:46:55 -0700 | [diff] [blame] | 112 | static inline std::string nameReduceCombinerFromAccumulator(llvm::StringRef accumName) { |
David Gross | 57fd9f8 | 2016-04-08 12:35:41 -0700 | [diff] [blame] | 113 | return std::string(accumName) + ".combiner"; |
| 114 | } |
| 115 | |
Stephen Hines | fb81ec1 | 2015-05-18 20:04:23 -0700 | [diff] [blame] | 116 | #endif // BCC_RS_UTILS_H |