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comparison: gfx/angle/src/compiler/ForLoopUnroll.h
gfx/angle/src/compiler/ForLoopUnroll.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:e0855c61efc6 |
|---|---|
| 1 // | |
| 2 // Copyright (c) 2011 The ANGLE Project Authors. All rights reserved. | |
| 3 // Use of this source code is governed by a BSD-style license that can be | |
| 4 // found in the LICENSE file. | |
| 5 // | |
| 6 | |
| 7 #ifndef ForLoopUnroll_h | |
| 8 #define ForLoopUnroll_h | |
| 9 | |
| 10 #include "compiler/intermediate.h" | |
| 11 | |
| 12 struct TLoopIndexInfo { | |
| 13 int id; | |
| 14 int initValue; | |
| 15 int stopValue; | |
| 16 int incrementValue; | |
| 17 TOperator op; | |
| 18 int currentValue; | |
| 19 }; | |
| 20 | |
| 21 class ForLoopUnroll { | |
| 22 public: | |
| 23 ForLoopUnroll() { } | |
| 24 | |
| 25 void FillLoopIndexInfo(TIntermLoop* node, TLoopIndexInfo& info); | |
| 26 | |
| 27 // Update the info.currentValue for the next loop iteration. | |
| 28 void Step(); | |
| 29 | |
| 30 // Return false if loop condition is no longer satisfied. | |
| 31 bool SatisfiesLoopCondition(); | |
| 32 | |
| 33 // Check if the symbol is the index of a loop that's unrolled. | |
| 34 bool NeedsToReplaceSymbolWithValue(TIntermSymbol* symbol); | |
| 35 | |
| 36 // Return the current value of a given loop index symbol. | |
| 37 int GetLoopIndexValue(TIntermSymbol* symbol); | |
| 38 | |
| 39 void Push(TLoopIndexInfo& info); | |
| 40 void Pop(); | |
| 41 | |
| 42 static void MarkForLoopsWithIntegerIndicesForUnrolling(TIntermNode* root); | |
| 43 | |
| 44 private: | |
| 45 int getLoopIncrement(TIntermLoop* node); | |
| 46 | |
| 47 int evaluateIntConstant(TIntermConstantUnion* node); | |
| 48 | |
| 49 TVector<TLoopIndexInfo> mLoopIndexStack; | |
| 50 }; | |
| 51 | |
| 52 #endif |
