src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.h

   1 /*
   2  * Copyright 2011 Christoph Bumiller
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include "codegen/nv50_ir.h"
  24 #include "codegen/nv50_ir_build_util.h"
  25
  26 namespace nv50_ir {
  27
  28 class NVC0LegalizeSSA : public Pass
  29 {
  30 private:
  31    virtual bool visit(BasicBlock *);
  32    virtual bool visit(Function *);
  33
  34    // we want to insert calls to the builtin library only after optimization
  35    void handleDIV(Instruction *); // integer division, modulus
  36    void handleRCPRSQ(Instruction *); // double precision float recip/rsqrt
  37    void handleFTZ(Instruction *);
  38
  39 private:
  40    BuildUtil bld;
  41 };
  42
  43 class NVC0LegalizePostRA : public Pass
  44 {
  45 public:
  46    NVC0LegalizePostRA(const Program *);
  47
  48 private:
  49    virtual bool visit(Function *);
  50    virtual bool visit(BasicBlock *);
  51
  52    void replaceZero(Instruction *);
  53    bool tryReplaceContWithBra(BasicBlock *);
  54    void propagateJoin(BasicBlock *);
  55
  56    struct TexUse
  57    {
  58       TexUse(Instruction *use, const Instruction *tex)
  59          : insn(use), tex(tex), level(-1) { }
  60       Instruction *insn;
  61       const Instruction *tex; // or split / mov
  62       int level;
  63    };
  64    struct Limits
  65    {
  66       Limits() { }
  67       Limits(int min, int max) : min(min), max(max) { }
  68       int min, max;
  69    };
  70    bool insertTextureBarriers(Function *);
  71    inline bool insnDominatedBy(const Instruction *, const Instruction *) const;
  72    void findFirstUses(Instruction *texi, std::list<TexUse> &uses);
  73    void findFirstUsesBB(int minGPR, int maxGPR, Instruction *start,
  74                         const Instruction *texi, std::list<TexUse> &uses,
  75                         unordered_set<const BasicBlock *> &visited);
  76    void addTexUse(std::list<TexUse>&, Instruction *, const Instruction *);
  77    const Instruction *recurseDef(const Instruction *);
  78
  79 private:
  80    LValue *rZero;
  81    LValue *carry;
  82    const bool needTexBar;
  83 };
  84
  85 class NVC0LoweringPass : public Pass
  86 {
  87 public:
  88    NVC0LoweringPass(Program *);
  89
  90 protected:
  91    bool handleRDSV(Instruction *);
  92    bool handleWRSV(Instruction *);
  93    bool handleEXPORT(Instruction *);
  94    bool handleOUT(Instruction *);
  95    bool handleDIV(Instruction *);
  96    bool handleMOD(Instruction *);
  97    bool handleSQRT(Instruction *);
  98    bool handlePOW(Instruction *);
  99    bool handleTEX(TexInstruction *);
 100    bool handleTXD(TexInstruction *);
 101    bool handleTXQ(TexInstruction *);
 102    virtual bool handleManualTXD(TexInstruction *);
 103    bool handleTXLQ(TexInstruction *);
 104    bool handleSUQ(Instruction *);
 105    bool handleATOM(Instruction *);
 106    bool handleCasExch(Instruction *, bool needCctl);
 107    void handleSurfaceOpNVE4(TexInstruction *);
 108    void handleSharedATOM(Instruction *);
 109    void handleSharedATOMNVE4(Instruction *);
 110    void handleLDST(Instruction *);
 111
 112    void checkPredicate(Instruction *);
 113
 114    virtual bool visit(Instruction *);
 115
 116 private:
 117    virtual bool visit(Function *);
 118    virtual bool visit(BasicBlock *);
 119
 120    void readTessCoord(LValue *dst, int c);
 121
 122    Value *loadResInfo32(Value *ptr, uint32_t off, uint16_t base);
 123    Value *loadResInfo64(Value *ptr, uint32_t off, uint16_t base);
 124    Value *loadResLength32(Value *ptr, uint32_t off, uint16_t base);
 125    Value *loadSuInfo32(Value *ptr, uint32_t off);
 126    Value *loadSuInfo64(Value *ptr, uint32_t off);
 127    Value *loadSuLength32(Value *ptr, uint32_t off);
 128    Value *loadBufInfo32(Value *ptr, uint32_t off);
 129    Value *loadBufInfo64(Value *ptr, uint32_t off);
 130    Value *loadBufLength32(Value *ptr, uint32_t off);
 131    Value *loadUboInfo32(Value *ptr, uint32_t off);
 132    Value *loadUboInfo64(Value *ptr, uint32_t off);
 133    Value *loadUboLength32(Value *ptr, uint32_t off);
 134    Value *loadMsInfo32(Value *ptr, uint32_t off);
 135    Value *loadTexHandle(Value *ptr, unsigned int slot);
 136
 137    void adjustCoordinatesMS(TexInstruction *);
 138    void processSurfaceCoordsNVE4(TexInstruction *);
 139
 140 protected:
 141    BuildUtil bld;
 142
 143 private:
 144    const Target *const targ;
 145
 146    Symbol *gMemBase;
 147    LValue *gpEmitAddress;
 148 };
 149
 150 } // namespace nv50_ir