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1 //===- subzero/src/IceTargetLowering.h - Lowering interface -----*- C++ -*-===// | 1 //===- subzero/src/IceTargetLowering.h - Lowering interface -----*- C++ -*-===// |
2 // | 2 // |
3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
4 // | 4 // |
5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
7 // | 7 // |
8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
9 // | 9 // |
10 // This file declares the TargetLowering and LoweringContext | 10 // This file declares the TargetLowering and LoweringContext |
11 // classes. TargetLowering is an abstract class used to drive the | 11 // classes. TargetLowering is an abstract class used to drive the |
12 // translation/lowering process. LoweringContext maintains a | 12 // translation/lowering process. LoweringContext maintains a |
13 // context for lowering each instruction, offering conveniences such | 13 // context for lowering each instruction, offering conveniences such |
14 // as iterating over non-deleted instructions. | 14 // as iterating over non-deleted instructions. |
15 // | 15 // |
16 //===----------------------------------------------------------------------===// | 16 //===----------------------------------------------------------------------===// |
17 | 17 |
18 #ifndef SUBZERO_SRC_ICETARGETLOWERING_H | 18 #ifndef SUBZERO_SRC_ICETARGETLOWERING_H |
19 #define SUBZERO_SRC_ICETARGETLOWERING_H | 19 #define SUBZERO_SRC_ICETARGETLOWERING_H |
20 | 20 |
21 #include "IceDefs.h" | 21 #include "IceDefs.h" |
22 #include "IceInst.h" // for the names of the Inst subtypes | 22 #include "IceInst.h" // for the names of the Inst subtypes |
23 #include "IceTypes.h" | 23 #include "IceTypes.h" |
24 | 24 |
25 namespace Ice { | 25 namespace Ice { |
26 | 26 |
27 typedef uint8_t AsmCodeByte; | 27 typedef uint8_t AsmCodeByte; |
28 | 28 |
29 class Assembler; | 29 class Assembler; |
| 30 class GlobalAddress; |
30 | 31 |
31 // LoweringContext makes it easy to iterate through non-deleted | 32 // LoweringContext makes it easy to iterate through non-deleted |
32 // instructions in a node, and insert new (lowered) instructions at | 33 // instructions in a node, and insert new (lowered) instructions at |
33 // the current point. Along with the instruction list container and | 34 // the current point. Along with the instruction list container and |
34 // associated iterators, it holds the current node, which is needed | 35 // associated iterators, it holds the current node, which is needed |
35 // when inserting new instructions in order to track whether variables | 36 // when inserting new instructions in order to track whether variables |
36 // are used as single-block or multi-block. | 37 // are used as single-block or multi-block. |
37 class LoweringContext { | 38 class LoweringContext { |
38 public: | 39 public: |
39 LoweringContext() : Node(NULL) {} | 40 LoweringContext() : Node(NULL) {} |
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241 | 242 |
242 // TargetGlobalInitLowering is used for "lowering" global | 243 // TargetGlobalInitLowering is used for "lowering" global |
243 // initializers. It is separated out from TargetLowering because it | 244 // initializers. It is separated out from TargetLowering because it |
244 // does not require a Cfg. | 245 // does not require a Cfg. |
245 class TargetGlobalInitLowering { | 246 class TargetGlobalInitLowering { |
246 public: | 247 public: |
247 static TargetGlobalInitLowering *createLowering(TargetArch Target, | 248 static TargetGlobalInitLowering *createLowering(TargetArch Target, |
248 GlobalContext *Ctx); | 249 GlobalContext *Ctx); |
249 virtual ~TargetGlobalInitLowering(); | 250 virtual ~TargetGlobalInitLowering(); |
250 | 251 |
251 // TODO: Allow relocations to be represented as part of the Data. | 252 virtual void lower(const GlobalAddress &Addr, bool DisableTranslation) = 0; |
252 virtual void lower(const IceString &Name, SizeT Align, bool IsInternal, | |
253 bool IsConst, bool IsZeroInitializer, SizeT Size, | |
254 const char *Data, bool DisableTranslation) = 0; | |
255 | 253 |
256 protected: | 254 protected: |
257 TargetGlobalInitLowering(GlobalContext *Ctx) : Ctx(Ctx) {} | 255 TargetGlobalInitLowering(GlobalContext *Ctx) : Ctx(Ctx) {} |
258 GlobalContext *Ctx; | 256 GlobalContext *Ctx; |
259 | 257 |
260 private: | 258 private: |
261 TargetGlobalInitLowering(const TargetGlobalInitLowering &) = delete; | 259 TargetGlobalInitLowering(const TargetGlobalInitLowering &) = delete; |
262 TargetGlobalInitLowering &operator=(const TargetGlobalInitLowering &) = | 260 TargetGlobalInitLowering &operator=(const TargetGlobalInitLowering &) = |
263 delete; | 261 delete; |
264 }; | 262 }; |
265 | 263 |
266 } // end of namespace Ice | 264 } // end of namespace Ice |
267 | 265 |
268 #endif // SUBZERO_SRC_ICETARGETLOWERING_H | 266 #endif // SUBZERO_SRC_ICETARGETLOWERING_H |
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